WO2016111660A1 - Engine top cover - Google Patents
Engine top cover Download PDFInfo
- Publication number
- WO2016111660A1 WO2016111660A1 PCT/TR2015/050293 TR2015050293W WO2016111660A1 WO 2016111660 A1 WO2016111660 A1 WO 2016111660A1 TR 2015050293 W TR2015050293 W TR 2015050293W WO 2016111660 A1 WO2016111660 A1 WO 2016111660A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polyol
- mould
- cover
- isocyanate
- blowing agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3271—Hydroxyamines
- C08G18/3275—Hydroxyamines containing two hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6681—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38
- C08G18/6688—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3271
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0033—Foam properties having integral skins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0041—Foam properties having specified density
- C08G2110/0066—≥ 150kg/m3
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2350/00—Acoustic or vibration damping material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/11—Thermal or acoustic insulation
Definitions
- the invention relates to covers that are placed on internal combustion engines.
- the invention especially relates to the engine top cover that consists of a mixture of polyol, isocyanate, blowing agent, cell expander, water, liquid pigment concentrate and in-mold coating.
- Covers that are made of various materials and that possess various functionalities are used in a variety of vehicle engines in the prior art.
- the invention is an engine side cover which contains a cover made of metal plate and a cork gasket; wherein it relates to containing the mentioned cover made of aluminum, a cover canal provided on the sides of the inner part of the mentioned cover, O-ring placed in the mentioned canal of the cover, filter that is placed on the inner part of the mentioned cover and a ventilation pipe placed on the outer part of the mentioned cover.”
- the object of the mentioned invention is to provide a high-strength and oil-proof engine side cover, which is made of aluminum, in order to prevent the engine from leaking oil, on the side of the engine.
- a Cover Another application is the utility model application no. TR200700730 called "A Cover”.
- the invention is briefly described as: "The present invention relates to a cover, which is placed on the floor of vehicles such as buses, midibuses, minibuses; which is used for accessing the engine and which is assembled by means of t-nuts”.
- the object of the mentioned invention is to provide a cover, which is located on the floor of the vehicle for accessing the engine and which does not have any exposed apparatus that may disturb people such as clamping arms and connection bolts.
- Another application is the utility model application no. TR201004537 called “A novelty in engine top covers of tractors'.
- the invention is briefly described as: "The present invention relates to engine top covers (valve cover) that are placed on tractor engines.
- the engine top cover of the invention is characterized in that; it is made of aluminum, wherein it contains o- ring gasket housing (2.a) and o-ring gasket as the seal (leak tightness) inside the o-ring gasket housing (2. a).
- the object of the mentioned invention is to produce an engine top cover made of aluminum and to use o-ring gasket in the structure, due to the indurable and fragile structure of engine covers, used in the prior art, that essentially contain plastics.
- Present invention relates to an engine top cover that meets the abovementioned requirements, eliminates all disadvantages and provides some additional advantages.
- Primary object of the invention is to provide a cover that consists of a mixture of polyol, isocyanate, blowing agent, cell expander, and water, wherein it is singly placed on internal combustion engines.
- Another object of the invention is to provide temperature resistance for temperatures between -40°C and 140°C.
- Another similar object of the invention is to provide a lightweight cover as compared to similar ones in the prior art.
- Another object of the invention is to provide a water based integral type system, wherein it is different than foam type polyurethanes.
- Another object of the invention is to resist high temperatures (140°C) and not get deformed.
- the invention is a cover that consists of a mixture of polyol, isocyanate, blowing agent, cell expander, water, liquid pigment concentrate and in-mold coating, wherein it is to be placed on internal combustion engines.
- Raw material Preferred amount (%) Usable amount (%)
- Polyol is a mixture, which contains nonhazardous additives and consists of a mixture of ⁇ , ⁇ , ⁇ ', ⁇ ', ⁇ ""- Pentamethylene triamine, 2,2'-iminodiethanol of specified materials, with an OH number between 150-180 and water ratio of maximum 1 %. It is water based MDI type polyether polyol. Various catalysts, surfactants, crosslinking agents, filling materials, antistatic materials and such may be used in polyol.
- Isocyanate is an MDI type isocyanide with NCO value between 26-29. It consists of a mixture of 4-4'-methylenediphenyldiisocyanate; diphenylmethane / 4,4' diisocyanate(MDI)polymethilenepolyphenylpolyisocyanate, glycerol etoxylated-propoxylated, coploymer and o-(p-isocyanatebenzyl)phenyl isocyanate,diphenylmethane-2,4'diisocyanate.
- Polyurethane foams or polyurethane based products consist of two main components, catalysts that start a reaction for them and blowing (foaming) agents.
- the two main components are: 1 st Component (Component A): Polyol; 2 nd Component (Component B): Isocyanate.
- Blowing agent lowers the density. It increases skin thickness. It increases the effect of sound absorption. Sound absorption has two types; internal and external. Inflator gas; is used for improving external sound absorption. This gas aids the product in moving inside the mould and filling the mould.
- Cell expander is a mixture of glycerol, propylene oxide, ethylene oxide polymer. It expands the pore structure and aids in absorbing of the sound in the material. Cell expander is used to improve internal sound absorption.
- the invention also involves the use of liquid pigment concentrate and in-mold coating.
- Liquid pigment concentrate is used to match the color of polyol with the on-mold coating and to prevent color differences in deburring processes with deep burrs.
- On-mold coating is used to remove the scars of raw material formed when moving inside the mould.
- Pressure values of the polyurethane machine are: 150 ⁇ 50 bar for polyol and 170 ⁇ 70 bar for isocyanate. These pressure values may differ according to temperature, viscosity and nozzle diameter. Raw material temperatures (in the range of 20-35 ⁇ in raw material tanks) and mold temperatures are adjusted according to parameter conditions (40-60 ⁇ ). Mixing ratio of raw materials (polyol/iso) in the PU (polyurethane) machine may vary between 100/45 and 100/62 depending on the desired material hardness. Application of the mentioned composition on the cover:
- on-mold coating is made ready.
- mould release agent is added to the mould so as to enable easy removing of the material from the mould.
- on-mold coating is added under a certain temperature.
- the composition mixed inside the PU machine is injected into the mould from the material input area of the mould or casting process is achieved in the form of the cast (by pouring into the mould from the head of the PU machine with a certain path when the mould is open).
- the product is removed from the mould. After minimum 8 hours on settling racks, products are deburred by burr removing operators. Product is packaged and moved to stock.
- Mentioned on-mold coating preferably has a ratio of 3-6%.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention relates to an engine top cover that is placed on internal combustion engines and that contains polyol, isocyanate, blowing agent, cell expander and water.
Description
DESCRIPTION
Engine Top Cover Technical Field
The invention relates to covers that are placed on internal combustion engines.
The invention especially relates to the engine top cover that consists of a mixture of polyol, isocyanate, blowing agent, cell expander, water, liquid pigment concentrate and in-mold coating.
Background of the Invention
Covers that are made of various materials and that possess various functionalities are used in a variety of vehicle engines in the prior art.
One of these covers is presented in the patent application no. TR200602196 called "Oil proof engine side cover". The invention is briefly described as: "The invention is an engine side cover which contains a cover made of metal plate and a cork gasket; wherein it relates to containing the mentioned cover made of aluminum, a cover canal provided on the sides of the inner part of the mentioned cover, O-ring placed in the mentioned canal of the cover, filter that is placed on the inner part of the mentioned cover and a ventilation pipe placed on the outer part of the mentioned cover."
The object of the mentioned invention is to provide a high-strength and oil-proof engine side cover, which is made of aluminum, in order to prevent the engine from leaking oil, on the side of the engine.
Another application is the utility model application no. TR200700730 called "A Cover". The invention is briefly described as: "The present invention relates to a cover, which is placed on the floor of vehicles such as buses, midibuses, minibuses; which is used for accessing the engine and which is assembled by means of t-nuts".
The object of the mentioned invention is to provide a cover, which is located on the floor of the vehicle for accessing the engine and which does not have any exposed apparatus that may disturb people such as clamping arms and connection bolts.
Another application is the utility model application no. TR201004537 called "A novelty in engine top covers of tractors'. The invention is briefly described as: "The present invention relates to engine top covers (valve cover) that are placed on tractor engines. The engine top cover of the invention is characterized in that; it is made of aluminum, wherein it contains o- ring gasket housing (2.a) and o-ring gasket as the seal (leak tightness) inside the o-ring gasket housing (2. a).
The object of the mentioned invention is to produce an engine top cover made of aluminum and to use o-ring gasket in the structure, due to the indurable and fragile structure of engine covers, used in the prior art, that essentially contain plastics.
Although the abovementioned inventions have various features, they do not provide a low density and lightweight engine top cover that provides sound insulation. Consequently, the abovementioned problems and insufficiency of the existing solutions regarding this issue has necessitated making an improvement in the technical field related to engine top covers.
Object of the Invention
Present invention relates to an engine top cover that meets the abovementioned requirements, eliminates all disadvantages and provides some additional advantages.
Primary object of the invention is to provide a cover that consists of a mixture of polyol, isocyanate, blowing agent, cell expander, and water, wherein it is singly placed on internal combustion engines.
Another object of the invention is to provide sound insulation, to have low density (220-260 kg/m3) and to have part hardness varying between 45-60 shore A. Another object of the invention is to have a single piece, wherein a plastic cover is not necessary.
Another object of the invention is to provide temperature resistance for temperatures between -40°C and 140°C.
Another similar object of the invention is to provide a lightweight cover as compared to similar ones in the prior art.
Another object of the invention is to provide a water based integral type system, wherein it is different than foam type polyurethanes. Another object of the invention is to resist high temperatures (140°C) and not get deformed.
A composition used for the cover that is placed on internal combustion engines in order to fulfill the abovementioned objectives, wherein it contains polyol, isocyanate, blowing agent, cell expander and water.
The application method of the composition mentioned in Claim 1 on the cover that is placed on mentioned internal combustion engines in order to fulfill the abovementioned objectives, wherein it contains the following process steps: a) placing polyol raw material into the mixing unit,
b) then adding blowing agent, cell expander and water respectively,
c) mixing the resulting mixture for 30-45 minutes and taking it to the polyol tank in the polyurethane machine
d) drawing the isocyanate to ISO tank in the polyurethane machine.
e) mixing the mentioned raw material in polyurethane machine,
f) adding in-mold coating to the mould,
g) after the coating applied on the mould, placing the raw material mixed inside the polyurethane machine into the mould. The structural and characteristic features and all advantages of the invention will be more clearly understood by the detailed description given below. Therefore, evaluation should be done by taking into account this detailed description.
Detailed description of the invention
Preferred embodiments of the engine top cover of the invention are described in this detailed description only to aid in the further understanding of the invention and should not be construed as a limitation.
The invention is a cover that consists of a mixture of polyol, isocyanate, blowing agent, cell expander, water, liquid pigment concentrate and in-mold coating, wherein it is to be placed on internal combustion engines.
Raw material Preferred amount (%) Usable amount (%)
Polyol 60,76 55-70
Isocyanate 36,70 30-40
Blowing agent 2,22 1 -4
Cell expander 0,13 0,1 -1
Water 0,19 0,1 -1
Polyol; is a mixture, which contains nonhazardous additives and consists of a mixture of Ν,Ν,Ν',Ν',Ν""- Pentamethylene triamine, 2,2'-iminodiethanol of specified materials, with an OH number between 150-180 and water ratio of maximum 1 %. It is water based MDI type polyether polyol. Various catalysts, surfactants, crosslinking agents, filling materials, antistatic materials and such may be used in polyol.
Isocyanate; is an MDI type isocyanide with NCO value between 26-29. It consists of a mixture of 4-4'-methylenediphenyldiisocyanate; diphenylmethane / 4,4' diisocyanate(MDI)polymethilenepolyphenylpolyisocyanate, glycerol etoxylated-propoxylated, coploymer and o-(p-isocyanatebenzyl)phenyl isocyanate,diphenylmethane-2,4'diisocyanate.
Polyurethane foams or polyurethane based products consist of two main components, catalysts that start a reaction for them and blowing (foaming) agents. The two main components are: 1 st Component (Component A): Polyol; 2nd Component (Component B): Isocyanate.
Blowing agent; lowers the density. It increases skin thickness. It increases the effect of sound absorption. Sound absorption has two types; internal and external. Inflator gas; is used for improving external sound absorption. This gas aids the product in moving inside the mould and filling the mould.
Cell expander; is a mixture of glycerol, propylene oxide, ethylene oxide polymer. It expands the pore structure and aids in absorbing of the sound in the material. Cell expander is used to improve internal sound absorption.
Water; helps skin formation, expanding of the pore structure, reduce density and improve sound absorption. The invention also involves the use of liquid pigment concentrate and in-mold coating. Liquid pigment concentrate; is used to match the color of polyol with the on-mold coating and to
prevent color differences in deburring processes with deep burrs. On-mold coating; is used to remove the scars of raw material formed when moving inside the mould.
Production method of the composition of the invention using the ratios given above:
· polyol raw material is placed inside the mixing unit,
(if desired, a liquid pigment concentrate in the amount of 1 % of polyol is added and mixed for 30 minutes)
• then; blowing agent, cell expander and water are added respectively,
• the resulting mixture is stirred for 30-45 minutes and it is taken to the polyol tank in the polyurethane machine
• isocyanate is drawn to ISO tank in the polyurethane machine.
Pressure values of the polyurethane machine are: 150±50 bar for polyol and 170±70 bar for isocyanate. These pressure values may differ according to temperature, viscosity and nozzle diameter. Raw material temperatures (in the range of 20-35Ό in raw material tanks) and mold temperatures are adjusted according to parameter conditions (40-60Ό). Mixing ratio of raw materials (polyol/iso) in the PU (polyurethane) machine may vary between 100/45 and 100/62 depending on the desired material hardness. Application of the mentioned composition on the cover:
On the other hand; on-mold coating is made ready. First, mould release agent is added to the mould so as to enable easy removing of the material from the mould. Then, on-mold coating is added under a certain temperature. After that, the composition mixed inside the PU machine is injected into the mould from the material input area of the mould or casting process is achieved in the form of the cast (by pouring into the mould from the head of the PU machine with a certain path when the mould is open). After holding inside the mould for 5-12 minutes, the product is removed from the mould. After minimum 8 hours on settling racks, products are deburred by burr removing operators. Product is packaged and moved to stock.
Mentioned on-mold coating preferably has a ratio of 3-6%.
Claims
1. A composition used for the cover that is placed on internal combustion engines, characterized in that it contains polyol, isocyanate, blowing agent, cell expander and water.
2. Composition according to claim 1 , characterized in that it contains 55-70% polyol, 30- 40% isocyanate, 1 -4% blowing agent, 0,1 -1 % cell expander and 0,1 -1 % water by weight.
3. Application method of the composition mentioned in claim 1 on the cover that is placed on internal combustion engines, characterized in that it contains the following process steps; a) placing polyol raw material into the mixing unit,
b) then adding blowing agent, cell expander and water respectively,
c) mixing the resulting mixture for 30-45 minutes and taking it to the polyol tank in the polyurethane machine
d) drawing the isocyanate to ISO tank in the polyurethane machine,
e) mixing the mentioned raw material in polyurethane machine,
f) adding on-mold coating to the mould,
g) after the coating applied on the mould, placing the raw material mixed inside the polyurethane machine into the mould.
4. Method of application on the cover according to claim 3, characterized in that on-mold coating is injected into the mould in the mentioned process step g.
5. Method of application on the cover according to claim 3, characterized in that on-mold coating is poured into the mould in the mentioned process step g.
6. Method of application on the cover according to claim 3, characterized in that polyol raw material is mixed with liquid pigment concentrate in the process step a.
7. Method of application on the cover according to claim 3, characterized in that it contains 55-70% polyol, 30-40% isocyanate, 1 -4% blowing agent, 0,1 -1 % cell expander and 0,1 -1 % water by weight.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TR201500045 | 2015-01-05 | ||
| TR2015/00045 | 2015-01-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016111660A1 true WO2016111660A1 (en) | 2016-07-14 |
Family
ID=55359695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/TR2015/050293 Ceased WO2016111660A1 (en) | 2015-01-05 | 2015-12-30 | Engine top cover |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2016111660A1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0708127A2 (en) * | 1994-10-22 | 1996-04-24 | Elastogran GmbH | Process for the preparation of rigid polyurethane foams having reduced thermal conductivity and their use |
| DE19647296A1 (en) * | 1996-11-15 | 1998-05-20 | Basf Ag | Tin-containing polyisocyanates and process for the preparation of polyisocyanate polyadducts |
| EP1298160A1 (en) * | 2001-09-27 | 2003-04-02 | Tokai Rubber Industries, Ltd. | Flame-resistant and sound-and vibration-insulating member for vehicles, and process of manufacturing the same |
| TR200602196U (en) | 2006-05-04 | 2006-06-21 | Konparsan İnşaat Taahhüt Otomoti̇v Teksti̇l Ürünleri̇ Sanayi̇ Ti̇caret Li̇mi̇ted Şi̇rketi̇ | Oil-tight engine side cover |
| TR200700730U (en) | 2007-02-08 | 2007-06-21 | Otoyol San. A.Ş. | A cover. |
| WO2012177361A1 (en) * | 2011-06-22 | 2012-12-27 | Dow Global Technologies Llc | Polyurethane foam elastomers for high temperature applications |
| WO2013003027A2 (en) * | 2011-06-29 | 2013-01-03 | Dow Global Technologies Llc | Thermally stable flame resistant flexible polyurethane foam |
-
2015
- 2015-12-30 WO PCT/TR2015/050293 patent/WO2016111660A1/en not_active Ceased
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0708127A2 (en) * | 1994-10-22 | 1996-04-24 | Elastogran GmbH | Process for the preparation of rigid polyurethane foams having reduced thermal conductivity and their use |
| DE19647296A1 (en) * | 1996-11-15 | 1998-05-20 | Basf Ag | Tin-containing polyisocyanates and process for the preparation of polyisocyanate polyadducts |
| EP1298160A1 (en) * | 2001-09-27 | 2003-04-02 | Tokai Rubber Industries, Ltd. | Flame-resistant and sound-and vibration-insulating member for vehicles, and process of manufacturing the same |
| TR200602196U (en) | 2006-05-04 | 2006-06-21 | Konparsan İnşaat Taahhüt Otomoti̇v Teksti̇l Ürünleri̇ Sanayi̇ Ti̇caret Li̇mi̇ted Şi̇rketi̇ | Oil-tight engine side cover |
| TR200700730U (en) | 2007-02-08 | 2007-06-21 | Otoyol San. A.Ş. | A cover. |
| WO2012177361A1 (en) * | 2011-06-22 | 2012-12-27 | Dow Global Technologies Llc | Polyurethane foam elastomers for high temperature applications |
| WO2013003027A2 (en) * | 2011-06-29 | 2013-01-03 | Dow Global Technologies Llc | Thermally stable flame resistant flexible polyurethane foam |
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