CN106118005A - A kind of solar cell package environment-friendly materials - Google Patents

Abstract

The invention discloses an environmental protection material for solar cell encapsulation, which is made of the following raw materials: tung oil-based alkyd resin, acrylic resin, vinyl resin, tributoxyethyl phosphate, butyl epoxy stearate, and pentaerythritol rosin ester , maleic anhydride grafted EPDM rubber, chlorosulfonated polyethylene, sodium silicate, sodium polyoxyethylene lauryl ether sulfate, chlorinated paraffin, carbon fiber, 3‑Diethylaminopropylamine, methacrylic acid, carbonic acid Calcium, additives. The present invention uses tung oil-based materials instead of petroleum-based polymer materials for the packaging of solar cells, has a wide range of sources, is easy to prepare, is convenient to operate, has excellent product performance, and is environmentally friendly, reduces the consumption of petroleum resources and energy in solar cell packaging, and is green and energy-saving. It has broad application prospects and is an innovative green packaging material.

Description

Environmental protection material for solar cell encapsulation

【Technical field】

The invention belongs to the technical field of environmental protection and the technical field of preparation of solar cell encapsulation materials, and in particular relates to an environmental protection material for solar cell encapsulation.

【Background technique】

Faced with the energy shortage that has affected people's livelihood and economic development, the fossil energy we have relied on for a long time will be exhausted in the next 100 to 200 years. People are trying to find low-carbon or zero-carbon new energy and production technologies. Among many new energy In the way, solar energy is expected to become the main energy source of human beings in the next fifty years because of its inexhaustible characteristics. In 2010, the total installation of solar power generation in the world was about 18GW, while the total production of solar cells in China was about 10GW in the same year, both of which are growing rapidly; solar cell packaging technology has become one of the key technologies for the development of this emerging industry of solar energy .

In the current industry, the commonly used solar cell front-side packaging process has the following multiple steps: (a) producing polyethylene-vinyl acetate (EVA) thermal adhesive packaging film or related packaging film; (b) according to the solar cell Cut the EVA packaging film according to the size of the board; (c) form a sandwich structure of battery-encapsulation film-glass plate; (d) heat bonding.

When encapsulating the bottom of the battery, there are more steps in the process: (a) produce polyethylene-vinyl acetate (EVA) thermal adhesive packaging film or related packaging film: (b) cut the EVA packaging film according to the size of the solar panel: (c) Cover the bottom surface of the battery: (d) produce a multi-layer sealing film (usually including a film material such as polytetrafluoroethylene/polyethylene terephthalate/polytetrafluoroethylene, referred to as TPT: (e) Add a TPT sealing film on the EVA heat-bonded packaging film: (f) thermal bonding.

The plastic products used in this packaging process are all from petrochemical routes, which are not green products, and the thermal bonding method is energy-consuming and time-consuming. Another bigger problem is that on the one hand, we use solar cells to overcome the energy problem that fossil energy is about to be exhausted. On the other hand, when packaging solar cells to become energy tools, we still rely on petroleum-based chemical plastics and waste materials. This contradiction needs to be resolved urgently.

For thousands of years, my country has long used tung oil coating to protect furniture, ships and building structures, because tung oil coating can be cured by oxygen-induced cross-linking, strong viscosity, impermeable, wear-resistant and durable. Moreover, my country's climate and other natural environments are suitable for the growth of tung trees, so my country has always been far ahead of other countries in tung oil production. But for a long time, the tung oil industry has continued to use traditional techniques, and the use of high technology to innovate the tung oil industry has only just started; multiple patents have announced the method of using tung oil as raw materials for coatings and resins (application number 200810031013.X; 201110093579.7; 201110002171.4; 200410065369.7; 200910185732.1; 200910070756.2; 200910218768.5, etc.); the Chinese patent application number 201110076740.X introduces the method of using tung oil anhydride to prepare all bio-based epoxy resin compositions and cured products; It will become an important source of solar cell packaging materials.

Solar cell modules are products that use the photovoltaic effect of semiconductors such as silicon to directly convert sunlight into electrical energy through P-N junctions. Generally, solar cells must be packaged into a flat structure through glue sealing, lamination, etc. before they are put into use. The sealing of the frame adopts Weather resistance and anti-aging, silicone sealant with good bonding performance. At present, the commonly used silicone sealant is one-component, its curing speed is slow, the time is long, and it is easy to "overflow" in the production process of solar modules, which seriously affects the production efficiency. Chinese patent application No. 201010191169.1 discloses a two-component solar sealant for solar cell module assembly sealant and its preparation method. It consists of two parts, A component and B component; A component: 0-100 parts of base polymer, 10-50 parts of plasticizer, 50-100 parts of filler, 1-10 parts of reinforcing agent; B component : 0-100 parts of alkoxy-terminated polysiloxane, 0-100 parts of dimethyl silicone oil, 5-30 parts of pigment, 50-100 parts of crosslinking agent, 5-30 parts of coupling agent, 0.001-5 parts of catalyst . It has the characteristics of fast curing speed, stable storage, and no "overflow" in actual use. Although the two-component solar sealant disclosed above has certain functional characteristics, with the continuous development of solar technology, its own characteristics can no longer meet the needs of development. Its curing speed, stability, aging resistance and adhesive strength etc. cannot meet the growing needs, so further research is needed to develop a sealant with more excellent properties.

【Content of invention】

The invention provides an environmental protection material for solar cell packaging to solve the problems of slow curing speed, poor stability and aging resistance, low adhesive strength, high toxicity and easy environmental pollution of the existing solar cell packaging materials. The present invention uses tung oil-based materials instead of petroleum-based polymer materials for the packaging of solar cells, has a wide range of sources, is easy to prepare, is convenient to operate, has excellent product performance, and is environmentally friendly, reduces the consumption of petroleum resources and energy in solar cell packaging, and is green and energy-saving. It has broad application prospects and is an innovative green packaging material.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

An environmentally friendly material for solar cell encapsulation, which is made of the following raw materials in units of weight: 120-250 parts of tung oil-based alkyd resin, 40-70 parts of acrylic resin, 20-50 parts of vinyl resin, tributoxyethyl phosphate 18-30 parts of ester, 15-20 parts of epoxy butyl stearate, 12-18 parts of pentaerythritol rosin ester, 30-45 parts of maleic anhydride grafted EPDM rubber, 20-30 parts of chlorosulfonated polyethylene , 18-25 parts of sodium silicate, 15-20 parts of sodium polyoxyethylene lauryl ether sulfate, 25-32 parts of chlorinated paraffin, 12-20 parts of carbon fiber, 14-18 parts of 3-diethylaminopropylamine, methyl 12-24 parts of acrylic acid, 15-28 parts of calcium carbonate, 2-4 parts of epoxy silane coupling agent, 2-4 parts of maleic anhydride graft compatibilizer, 2,2'-methylene-bis-( 0.6-1.2 parts of 4-ethyl-6-tert-butylphenol), 0.5-1 part of phosphogypsum, 0.5-1 part of acrylic bridging agent, 0.4-0.8 part of acrylate processing aid, 0.3 part of 701 powder strengthening agent -0.5 parts, 0.3-0.5 parts of polyaluminum chloride, 0.4-0.6 parts of silicon carbide whiskers, 0.4-0.6 parts of trioctyl phosphate, bis-1-decaneoxy-2,2,6,6-tetramethyl 0.2-0.3 parts of piperidin-4-ol sebacate, 0.1-0.2 parts of styrene, 1-2 parts of initiator, 2-4 parts of crosslinking agent, 0.4-0.6 parts of softener, 0.2-0.2 parts of tackifier 0.4 parts, catalyst 0.1-0.2 parts, ultraviolet absorber 0.2-0.3 parts, flame retardant 0.2-0.3 parts;

The 2,2'-methylene-bis-(4-ethyl-6-tert-butylphenol) is an antioxidant;

The phosphogypsum is a stabilizer;

The acrylate processing aid is a regulator;

The polyaluminum chloride is a coagulant;

The silicon carbide whiskers are toughening agents;

The trioctyl phosphate is a plasticizer;

The bis-1-decaneoxy-2,2,6,6-tetramethylpiperidin-4-ol sebacate is a stabilizer;

The styrene is a terminator;

The preparation method of the solar cell encapsulation environment-friendly material comprises the following steps:

S1: Mix tung oil-based alkyd resin, acrylic resin, vinyl resin, tributoxyethyl phosphate, butyl epoxy stearate, pentaerythritol rosin ester, and grafted EPDM rubber with maleic anhydride. Stir at 230-260°C for 4-12min at a rotational speed of 100-400r/min to obtain mixture I;

S2: Add chlorosulfonated polyethylene, sodium silicate, sodium polyoxyethylene lauryl ether sulfate, chlorinated paraffin, and 3-diethylamine to the mixture I prepared in step 1 under a vacuum of 0.45-0.55 MPa Propylamine, methacrylic acid, epoxy silane coupling agent, maleic anhydride graft compatibilizer, phosphogypsum, acrylic bridging agent, acrylate processing aid, 701 powder strengthening agent, polyaluminum chloride, Silicon carbide whiskers, trioctyl phosphate, softener, initiator, cross-linking agent, tackifier, catalyst, stirred at a microwave power of 200-400W, a temperature of 150-180°C, and a speed of 200-300r/min 2-5h, prepared mixture II;

S3: Add carbon fiber, calcium carbonate, 2,2'-methylene-bis-(4-ethyl-6-tert-butylphenol), bis-1-decyloxy to the mixture II prepared in step 2 - 2,2,6,6-tetramethylpiperidin-4-ol sebacate, styrene, ultraviolet absorber, flame retardant, at a temperature of 120-130°C and a rotational speed of 200-300r/min Stir for 0.5-0.7h to obtain mixture III;

S4: The mixture III prepared in step 3 is extruded, calendered, cooled, drawn, and destaticized in sequence to obtain an environmentally friendly material for solar cell encapsulation, wherein the extrusion temperature is 78-92°C, and the hot pressing temperature is 28-42°C , cold pressing temperature is 9-16 ℃.

Further, the initiator is azobisisobutyrate (ethylene glycol acrylate).

Further, the crosslinking agent is 2,5-dimethyl-2,5-bis(benzoylperoxy)-hexane.

Further, the softening agent is polyester fiber.

Further, the tackifier is glycidoxypropyltrimethoxysilane.

Further, the catalyst is a platinum catalyst.

Further, the ultraviolet absorber is 2-hydroxy-4-n-octyloxybenzophenone.

Further, the flame retardant is ammonium polyphosphate.

The present invention has the following beneficial effects:

(1) The solar cell encapsulation environmental protection material that the present invention makes has good performance, wherein pencil hardness has reached 4B, curing time has reached below 26min, tensile strength has reached more than 7.69MPa, and shear strength has reached more than 6.21MPa , the breakdown voltage has reached above 36.24KV/mm, and the artificial aging test has reached above 1280h without any abnormalities.

(2) The present invention uses tung oil-based materials instead of petroleum-based polymer materials for the packaging of solar cells, has a wide range of sources, is easy to prepare, is convenient to operate, has excellent product performance, and is environmentally friendly, reducing the consumption of petroleum resources and energy in solar cell packaging. Green and energy-saving, it has broad application prospects and is an innovative green packaging material.

【detailed description】

In order to facilitate a better understanding of the present invention, the following examples are used to illustrate, and these examples belong to the protection scope of the present invention, but do not limit the protection scope of the present invention.

In an embodiment, the solar cell packaging environment-friendly material is made of the following raw materials in units of weight: 120-250 parts of tung oil-based alkyd resin, 40-70 parts of acrylic resin, 20-50 parts of vinyl resin, phosphoric acid 18-30 parts of tributoxyethyl ester, 15-20 parts of epoxy butyl ester, 12-18 parts of pentaerythritol rosin ester, 30-45 parts of maleic anhydride grafted EPDM rubber, chlorosulfonated polystyrene 20-30 parts of ethylene, 18-25 parts of sodium silicate, 15-20 parts of sodium polyoxyethylene lauryl ether sulfate, 25-32 parts of chlorinated paraffin, 12-20 parts of carbon fiber, 14- 18 parts, 12-24 parts of methacrylic acid, 15-28 parts of calcium carbonate, 2-4 parts of epoxy silane coupling agent, 2-4 parts of maleic anhydride graft compatibilizer, 2,2'-methylene Base-bis-(4-ethyl-6-tert-butylphenol) 0.6-1.2 parts, phosphogypsum 0.5-1 part, acrylic bridging agent 0.5-1 part, acrylate processing aid 0.4-0.8 part, 0.3-0.5 parts of 701 powder strengthening agent, 0.3-0.5 parts of polyaluminum chloride, 0.4-0.6 parts of silicon carbide whiskers, 0.4-0.6 parts of trioctyl phosphate, bis-1-decaneoxy-2,2,6 , 0.2-0.3 parts of 6-tetramethylpiperidin-4-ol sebacate, 0.1-0.2 parts of styrene, 1-2 parts of azobisisobutyrate (ethylene glycol acrylate), 2,5- 2-4 parts of dimethyl-2,5-bis(benzoylperoxy)-hexane, 0.4-0.6 parts of polyester fiber, 0.2-0.4 parts of glycidoxypropyl trimethoxysilane, 0.1 parts of platinum catalyst -0.2 parts, 0.2-0.3 parts of 2-hydroxy-4-n-octyloxybenzophenone, 0.2-0.3 parts of ammonium polyphosphate;

The preparation method of the solar cell encapsulation environment-friendly material comprises the following steps:

S1: Mix tung oil-based alkyd resin, acrylic resin, vinyl resin, tributoxyethyl phosphate, butyl epoxy stearate, pentaerythritol rosin ester, and grafted EPDM rubber with maleic anhydride. Stir at 230-260°C for 4-12min at a rotational speed of 100-400r/min to obtain mixture I;

S2: Add chlorosulfonated polyethylene, sodium silicate, sodium polyoxyethylene lauryl ether sulfate, chlorinated paraffin, and 3-diethylamine to the mixture I prepared in step 1 under a vacuum of 0.45-0.55 MPa Propylamine, methacrylic acid, epoxy silane coupling agent, maleic anhydride graft compatibilizer, phosphogypsum, acrylic bridging agent, acrylate processing aid, 701 powder strengthening agent, polyaluminum chloride, Silicon carbide whiskers, trioctyl phosphate, polyester fiber, azobisisobutyrate (ethylene glycol acrylate), 2,5-dimethyl-2,5-bis(benzoylperoxy)-hexane alkane, glycidoxypropyltrimethoxysilane, and platinum catalyst, and stir for 2-5 hours at a microwave power of 200-400W, a temperature of 150-180°C, and a rotation speed of 200-300r/min to obtain a mixture II;

S3: Add carbon fiber, calcium carbonate, 2,2'-methylene-bis-(4-ethyl-6-tert-butylphenol), bis-1-decyloxy to the mixture II prepared in step 2 -2,2,6,6-tetramethylpiperidin-4-ol sebacate, styrene, 2-hydroxy-4-n-octyloxybenzophenone, ammonium polyphosphate, at a temperature of 120- Stir at 130°C for 0.5-0.7h at a rotational speed of 200-300r/min to obtain mixture III;

S4: The mixture III prepared in step 3 is extruded, calendered, cooled, drawn, and destaticized in sequence to obtain an environmentally friendly material for solar cell encapsulation, wherein the extrusion temperature is 78-92°C, and the hot pressing temperature is 28-42°C , cold pressing temperature is 9-16 ℃.

Example 1

An environmentally friendly material for solar cell encapsulation, made of the following raw materials in units of weight: 180 parts of tung oil-based alkyd resin, 55 parts of acrylic resin, 35 parts of vinyl resin, 24 parts of tributoxyethyl phosphate, epoxy 18 parts of butyl stearate, 15 parts of pentaerythritol rosin ester, 38 parts of maleic anhydride grafted EPDM rubber, 25 parts of chlorosulfonated polyethylene, 22 parts of sodium silicate, 18 parts of polyoxyethylene lauryl ether sulfate 28 parts of chlorinated paraffin, 16 parts of carbon fiber, 16 parts of 3-diethylaminopropylamine, 18 parts of methacrylic acid, 22 parts of calcium carbonate, 3 parts of epoxy silane coupling agent, maleic anhydride graft compatible 3 parts of 2,2'-methylene-bis-(4-ethyl-6-tert-butylphenol) 0.9 parts, 0.8 parts of phosphogypsum, 0.8 parts of acrylic bridging agent, acrylate processing aid 0.6 parts, 0.4 parts of 701 powder strengthening agent, 0.4 parts of polyaluminum chloride, 0.5 parts of silicon carbide whiskers, 0.5 parts of trioctyl phosphate, bis-1-decaneoxy-2,2,6,6-tetramethyl 0.2 parts of piperidin-4-ol sebacate, 0.1 parts of styrene, 1.5 parts of azobisisobutyrate (ethylene glycol acrylate), 2,5-dimethyl-2,5-bis(benzene Formylperoxy)-hexane 3 parts, polyester fiber 0.5 part, glycidoxypropyltrimethoxysilane 0.3 part, platinum catalyst 0.1 part, 2-hydroxy-4-n-octyloxybenzophenone 0.2 part, 0.2 part of ammonium polyphosphate;

The preparation method of the solar cell encapsulation environment-friendly material comprises the following steps:

S1: Mix tung oil-based alkyd resin, acrylic resin, vinyl resin, tributoxyethyl phosphate, butyl epoxy stearate, pentaerythritol rosin ester, and grafted EPDM rubber with maleic anhydride. Stir at 250°C for 8 minutes at a rotational speed of 300r/min to obtain mixture I;

S2: Add chlorosulfonated polyethylene, sodium silicate, sodium polyoxyethylene lauryl ether sulfate, chlorinated paraffin, and 3-diethylaminopropylamine to the mixture I prepared in step 1 under a vacuum of 0.5 MPa , methacrylic acid, epoxy silane coupling agent, maleic anhydride graft compatibilizer, phosphogypsum, acrylic bridging agent, acrylate processing aid, 701 powder strengthening agent, polyaluminum chloride, silicon carbide Whiskers, trioctyl phosphate, polyester fiber, azobisisobutyrate (ethylene glycol acrylate), 2,5-dimethyl-2,5-bis(benzoylperoxy)-hexane, Glycidoxypropyltrimethoxysilane and platinum catalyst were stirred for 4 hours at a microwave power of 300W, a temperature of 170°C, and a rotation speed of 200r/min to obtain mixture II;

S3: Add carbon fiber, calcium carbonate, 2,2'-methylene-bis-(4-ethyl-6-tert-butylphenol), bis-1-decyloxy to the mixture II prepared in step 2 -2,2,6,6-Tetramethylpiperidin-4-ol sebacate, styrene, 2-hydroxy-4-n-octyloxybenzophenone, ammonium polyphosphate at a temperature of 125°C , stirring at a speed of 200r/min for 0.6h to obtain mixture III;

S4: Extrude, calender, cool, draw, and remove static electricity from the mixture III obtained in step 3 to obtain an environmentally friendly material for solar cell encapsulation. The extrusion temperature is 85°C, the hot-pressing temperature is 35°C, and the cold-pressing temperature is is 12°C.

Example 2

An environmentally friendly material for solar cell encapsulation, which is made of the following raw materials in units of weight: 120 parts of tung oil-based alkyd resin, 40 parts of acrylic resin, 20 parts of vinyl resin, 18 parts of tributoxyethyl phosphate, epoxy 15 parts of butyl stearate, 12 parts of pentaerythritol rosin ester, 30 parts of maleic anhydride grafted EPDM rubber, 20 parts of chlorosulfonated polyethylene, 18 parts of sodium silicate, 15 parts of polyoxyethylene lauryl ether sulfate 25 parts of chlorinated paraffin, 12 parts of carbon fiber, 14 parts of 3-diethylaminopropylamine, 12 parts of methacrylic acid, 15 parts of calcium carbonate, 2 parts of epoxy silane coupling agent, maleic anhydride graft compatible 2 parts of 2,2'-methylene-bis-(4-ethyl-6-tert-butylphenol) 0.6 parts, 0.5 parts of phosphogypsum, 0.5 parts of acrylic bridging agent, acrylate processing aid 0.4 parts, 0.3 parts of 701 powder strengthening agent, 0.3 parts of polyaluminum chloride, 0.4 parts of silicon carbide whiskers, 0.4 parts of trioctyl phosphate, bis-1-decaneoxy-2,2,6,6-tetramethyl 0.2 parts of piperidin-4-ol sebacate, 0.1 parts of styrene, 1 part of azobisisobutyrate (ethylene glycol acrylate), 2,5-dimethyl-2,5-bis(benzene Formylperoxy)-hexane 2 parts, polyester fiber 0.4 part, glycidoxypropyltrimethoxysilane 0.2 part, platinum catalyst 0.1 part, 2-hydroxy-4-n-octyloxybenzophenone 0.2 part, 0.2 part of ammonium polyphosphate;

The preparation method of the solar cell encapsulation environment-friendly material comprises the following steps:

S1: Mix tung oil-based alkyd resin, acrylic resin, vinyl resin, tributoxyethyl phosphate, butyl epoxy stearate, pentaerythritol rosin ester, and grafted EPDM rubber with maleic anhydride. Stir at 230°C for 12 minutes at a rotational speed of 100r/min to obtain mixture I;

S2: Add chlorosulfonated polyethylene, sodium silicate, sodium polyoxyethylene lauryl ether sulfate, chlorinated paraffin, and 3-diethylaminopropylamine to the mixture I prepared in step 1 under a vacuum of 0.45 MPa , methacrylic acid, epoxy silane coupling agent, maleic anhydride graft compatibilizer, phosphogypsum, acrylic bridging agent, acrylate processing aid, 701 powder strengthening agent, polyaluminum chloride, silicon carbide Whiskers, trioctyl phosphate, polyester fiber, azobisisobutyrate (ethylene glycol acrylate), 2,5-dimethyl-2,5-bis(benzoylperoxy)-hexane, Glycidoxypropyltrimethoxysilane and platinum catalyst were stirred for 5 hours at a microwave power of 200W, a temperature of 150°C, and a rotation speed of 200r/min to obtain mixture II;

S3: Add carbon fiber, calcium carbonate, 2,2'-methylene-bis-(4-ethyl-6-tert-butylphenol), bis-1-decyloxy to the mixture II prepared in step 2 -2,2,6,6-tetramethylpiperidin-4-ol sebacate, styrene, 2-hydroxy-4-n-octyloxybenzophenone, ammonium polyphosphate, at a temperature of 120°C , stirring at a speed of 200r/min for 0.7h to obtain mixture III;

S4: Extrude, calender, cool, draw, and remove static electricity from the mixture III obtained in step 3 to obtain an environmentally friendly material for solar cell packaging, wherein the extrusion temperature is 78°C, the hot pressing temperature is 28°C, and the cold pressing temperature is 28°C. is 9°C.

Example 3

An environmentally friendly material for solar cell encapsulation, made of the following raw materials in units of weight: 250 parts of tung oil-based alkyd resin, 70 parts of acrylic resin, 50 parts of vinyl resin, 30 parts of tributoxyethyl phosphate, epoxy 20 parts of butyl stearate, 18 parts of pentaerythritol rosin ester, 45 parts of maleic anhydride grafted EPDM rubber, 30 parts of chlorosulfonated polyethylene, 25 parts of sodium silicate, 20 parts of polyoxyethylene lauryl ether sulfate 32 parts of chlorinated paraffin, 20 parts of carbon fiber, 18 parts of 3-diethylaminopropylamine, 24 parts of methacrylic acid, 28 parts of calcium carbonate, 4 parts of epoxy silane coupling agent, maleic anhydride graft compatible 4 parts of 2,2'-methylene-bis-(4-ethyl-6-tert-butylphenol) 1.2 parts, 1 part of phosphogypsum, 1 part of acrylic bridging agent, acrylate processing aid 0.8 parts, 0.5 parts of 701 powder strengthening agent, 0.5 parts of polyaluminum chloride, 0.6 parts of silicon carbide whiskers, 0.6 parts of trioctyl phosphate, bis-1-decaneoxy-2,2,6,6-tetramethyl 0.3 parts of piperidin-4-ol sebacate, 0.2 parts of styrene, 2 parts of azobisisobutyrate (ethylene glycol acrylate), 2,5-dimethyl-2,5-bis(benzene Formylperoxy)-hexane 4 parts, polyester fiber 0.6 part, glycidoxypropyltrimethoxysilane 0.4 part, platinum catalyst 0.2 part, 2-hydroxy-4-n-octyloxybenzophenone 0.3 part, 0.3 part of ammonium polyphosphate;

The preparation method of the solar cell encapsulation environment-friendly material comprises the following steps:

S1: Mix tung oil-based alkyd resin, acrylic resin, vinyl resin, tributoxyethyl phosphate, butyl epoxy stearate, pentaerythritol rosin ester, and grafted EPDM rubber with maleic anhydride. Stir at 260°C for 4 minutes at a rotational speed of 400r/min to obtain mixture I;

S2: Add chlorosulfonated polyethylene, sodium silicate, sodium polyoxyethylene lauryl ether sulfate, chlorinated paraffin, and 3-diethylaminopropylamine to the mixture I prepared in step 1 under a vacuum of 0.55 MPa , methacrylic acid, epoxy silane coupling agent, maleic anhydride graft compatibilizer, phosphogypsum, acrylic bridging agent, acrylate processing aid, 701 powder strengthening agent, polyaluminum chloride, silicon carbide Whiskers, trioctyl phosphate, polyester fiber, azobisisobutyrate (ethylene glycol acrylate), 2,5-dimethyl-2,5-bis(benzoylperoxy)-hexane, Glycidoxypropyltrimethoxysilane and platinum catalyst were stirred for 2 hours at a microwave power of 400W, a temperature of 180°C, and a rotation speed of 300r/min to obtain mixture II;

S3: Add carbon fiber, calcium carbonate, 2,2'-methylene-bis-(4-ethyl-6-tert-butylphenol), bis-1-decyloxy to the mixture II prepared in step 2 -2,2,6,6-Tetramethylpiperidin-4-ol sebacate, styrene, 2-hydroxy-4-n-octyloxybenzophenone, ammonium polyphosphate at a temperature of 130°C , stirring at a speed of 300r/min for 0.5h to obtain mixture III;

S4: The mixture III prepared in step 3 is extruded, calendered, cooled, drawn, and destaticized in sequence to obtain an environmentally friendly material for solar cell encapsulation, wherein the extrusion temperature is 92°C, the hot pressing temperature is 42°C, and the cold pressing temperature is is 16°C.

The performance test was carried out on the environment-friendly solar cell encapsulation material prepared in Examples 1-3, and the results are shown in the table below.

As can be seen from the results in the table above, the solar cell encapsulation environmental protection material prepared by the present invention has good performance, wherein the pencil hardness has reached 4B, the curing time has reached below 26min, the tensile strength has reached more than 7.69MPa, and the shear strength It has reached more than 6.21MPa, the breakdown voltage has reached more than 36.24KV/mm, and the artificial aging test has reached more than 1280h without abnormalities. It has excellent comprehensive performance and can be well applied in the field of solar energy and exerts a good sealing effect.

The above content cannot be deemed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, they can also make some simple deduction or replacement without departing from the concept of the present invention. The invention is deemed to belong to the scope of patent protection determined by the filed claims.

Claims (8)

1. solar cell package environment-friendly materials, it is characterised in that in units of weight, are made up of following raw material: Oleum Verniciae fordii Based alkyd 120-250 part, acrylic resin 40-70 part, vinylite 20-50 part, tributoxyethyl phosphate 18-30 Part, epoxy butyl stearate 15-20 part, rosin pentaerythritol ester 12-18 part, maleic anhydride grafting ethylene propylene diene rubber 30-45 Part, chlorosulfonated polyethylene 20-30 part, sodium silicate 18-25 part, sodium polyoxyethelene lauryl alcohol sulfate 15-20 part, chlorinated paraffin 25-32 part, carbon fiber 12-20 part, 3-diethyl amino propylamine 14-18 part, methacrylic acid 12-24 part, calcium carbonate 15-28 part, Epoxy silane class coupling agent 2-4 part, maleic anhydride grafting compatilizer 2-4 part, 2,2 '-methylene-bis--(4-ethyl-6-tert-butyl group Phenol) 0.6-1.2 part, ardealite 0.5-1 part, acrylic type bridging agent 0.5-1 part, processing aids acrylic resin 0.4-0.8 Part, 701 powder hardening agent 0.3-0.5 parts, aluminium polychlorid 0.3-0.5 part, carborundum whisker 0.4-0.6 part, trioctyl phosphate 0.4-0.6 part, double-1-decane epoxide-2,2,6,6-tetramethyl piperidine-4-alcohol sebacate 0.2-0.3 parts, styrene 0.1- 0.2 part, initiator 1-2 part, cross-linking agent 2-4 part, softening agent 0.4-0.6 part, viscosifier 0.2-0.4 part, catalyst 0.1-0.2 Part, UV absorbent 0.2-0.3 part, fire retardant 0.2-0.3 part；

The preparation method of described solar cell package environment-friendly materials, comprises the following steps:

S1: by Oleum Verniciae fordii based alkyd, acrylic resin, vinylite, tributoxyethyl phosphate, epoxy stearic acid fourth The grafting ethylene propylene diene rubber mixing of ester, rosin pentaerythritol ester, maleic anhydride, is 230-260 DEG C in temperature, and rotating speed is 100- Stir 4-12min under 400r/min, prepare mixture I；

S2: under vacuum is 0.45-0.55MPa, adds chlorosulfonated polyethylene, silicic acid in the mixture I that step 1 prepares Sodium, sodium polyoxyethelene lauryl alcohol sulfate, chlorinated paraffin, 3-diethyl amino propylamine, methacrylic acid, epoxy silane class coupling Agent, maleic anhydride are grafted compatilizer, ardealite, acrylic type bridging agent, processing aids acrylic resin, 701 powder hardening agents, gather Close aluminum chloride, carborundum whisker, trioctyl phosphate, softening agent, initiator, cross-linking agent, viscosifier, catalyst, at microwave power For 200-400W, temperature is 150-180 DEG C, and rotating speed is stirring 2-5h under 200-300r/min, prepares mixture II；

S3: to step 2 prepare mixture II in add carbon fiber, calcium carbonate, 2,2 '-methylene-bis--(4-ethyl-6-uncle Butylphenol), double-1-decane epoxide-2,2,6,6-tetramethyl piperidine-4-alcohol sebacates, styrene, UV absorbent, Fire retardant, is 120-130 DEG C in temperature, and rotating speed is stirring 0.5-0.7h under 200-300r/min, prepares mixture III；

S4: the mixture III step 3 prepared is the most extruded, roll, cool down, draw, destatic, prepares solaode envelope Dress environment-friendly materials, wherein extrusion temperature is 78-92 DEG C, and hot pressing temperature is 28-42 DEG C, and temperature of colding pressing is 9-16 DEG C.

Solar cell package environment-friendly materials the most according to claim 1, it is characterised in that described initiator is azo two Isopropylformic acid. (acrylic acid ethylene glycol) ester.

Solar cell package environment-friendly materials the most according to claim 1, it is characterised in that described cross-linking agent is 2,5-bis- Methyl-2, double (benzoyl the peroxide)-hexane of 5-.

Solar cell package environment-friendly materials the most according to claim 1, it is characterised in that described softening agent is that polyester is fine Dimension.

Solar cell package environment-friendly materials the most according to claim 1, it is characterised in that described viscosifier are epoxy third Oxygen propyl trimethoxy silicane.

Solar cell package environment-friendly materials the most according to claim 1, it is characterised in that described catalyst is platinum catalysis Agent.

Solar cell package environment-friendly materials the most according to claim 1, it is characterised in that described UV absorbent is Octabenzone.

Solar cell package environment-friendly materials the most according to claim 1, it is characterised in that described fire retardant is polyphosphoric acid Ammonium.