CN102226035B - Production method for health-care semi-rigid polyurethane foams of bamboo charcoal composite powder - Google Patents

Abstract

A health-care bamboo charcoal composite powder semi-rigid polyurethane foam production method, first need to prepare bamboo charcoal ore composite powder, wherein the preparation of bamboo charcoal powder needs to have three stages of temperature control: fumigation and pre-carbonization, main carbonization, calcining and refining The charcoal produced by the carbonization furnace with a high temperature zone temperature up to 700-1000 ℃, the ore powder is selected from germanium stone powder, magnetite powder and tourmaline powder, and the particle size of the bamboo charcoal ore composite powder is 800-1000 mesh, and the wavelength is 4 -14μm and 8-10μm are the most suitable for far-infrared radiation absorbed by the human body, and release a large amount of negative oxygen ions. The composite powder is used as an additive in the production of semi-rigid polyurethane foam, so that the product has high absorption, sweat and detoxification Strong odor, if the user comes into close contact with it, they will be in a small environment rich in far-infrared rays and negative ions, receive far-infrared rays and absorb oxygen, promote blood circulation and increase blood oxygen content, reduce fatigue, and benefit human health .

Description

Health care type bamboo charcoal composite powder semi-rigid polyurethane foam production method

technical field

The invention relates to a production method of a semi-rigid polyurethane foam with a powder beneficial to human health as an additive. the

Background technique

Polyurethane foam materials have been widely used in people's daily life, such as interlayer materials for carriages, seats, beds, pads, etc. Most of them use their porous and elastic characteristics to give people a soft and comfortable feeling. But although common foam material can absorb moisture, it is not easy to distribute moisture, and it is easy to breed germs due to dirt holding and smelly. CN1865236 discloses "a kind of bamboo charcoal sponge and its preparation method". The bamboo charcoal contained in the sponge contains 15%-50% , the proportion is high, which affects the maintenance of the original characteristics of the sponge, and the bamboo charcoal has not been specifically processed and selected, and the relevant excellent characteristics of the bamboo charcoal cannot be fully explored. CN1478817 discloses "antibacterial elastic polyurethane nanocomposite material and its preparation method", which is beneficial to increase and improve the moisture absorption and drying, antibacterial and deodorizing properties of foaming materials. However, the composite materials contain heavy metal ions and organic antibacterial agents, which to a certain extent cause environmental pollution and the emergence of drug-resistant bacteria. the

As we all know, bamboo charcoal has good adsorption function and far-infrared radiation function, but the charcoal made by different firing processes and charcoal furnaces has very different adsorption function and far-infrared radiation rate. Many ores have physical and chemical properties that are beneficial to human health. For example, germanium stone has the function of dehydrogenation and enrichment of oxygen. The far-infrared radiation rate is 92.1%, and the wavelength of 8-10 μm is especially suitable for human body absorption. The magnet is naturally magnetic, and its magnetic field is beneficial to adjust the negative and positive ions in the human body, keeping them in a balanced state, promoting blood circulation, activating the blood, and increasing the oxygen content of the blood. The detection amount of negative ions in the surface area of tourmaline is 4000-5000/cm ³ , the far-infrared radiation rate is 90-99%, and the wavelength is 4-14 μm, which is suitable for human body absorption. The above-mentioned bamboo charcoal and ore are crushed into powder and used as additives for semi-rigid polyurethane foam, and then the steering wheel and instrument panel, compartment materials, seats, beds, and pads of automobiles made of this foam material are undoubtedly , will have a good health care effect on the human body. After retrieval and market research, no relevant data reports and product launches have been found yet.

Contents of the invention

The technical problem to be solved by the present invention is to provide a method for producing health care type bamboo charcoal composite powder semi-rigid polyurethane foam. the

The technical scheme adopted to solve the above-mentioned technical problems is: the production method of this health-care type bamboo charcoal composite powder semi-rigid polyurethane foam is carried out as follows:

1. Preparation of bamboo charcoal ore composite powder as additive:

(1) Preparation of bamboo charcoal powder: split the bamboo into sections and put them into a carbonization furnace with three-stage temperature control functions of fumigation drying, pre-carbonization, main carbonization, and calcination and refining, and the temperature in the high-temperature zone can reach 700-1000°C , ignited and simmered, fumigated drying and pre-carbonization at 100-200°C, time-consuming 10-15h; when performing main carbonization, control the temperature at 200-450°C, time-consuming 10-15h, and then control the temperature at 450-600°C , takes 5-8h; after entering the calcining and refining stage, the maximum temperature is 700-1000°C, the temperature is controlled from 600°C to the maximum temperature, it takes 2-3h, and finally falls to the closed area in the furnace, and the air is isolated for cooling for 6-12h. Discharging, crushed into 800-1000 mesh bamboo charcoal powder, pore diameter 0.5-50nm, pore volume 0.05-0.20cm ³ /g, specific gravity 0.7-1.1g/cm ³ ;

(2) Purchasing of mineral powder: buy germanium stone powder, magnetite powder and tourmaline powder which are crushed into 100-300nm respectively from mining companies;

(3) Purchase starch for industrial use;

(4) Compounding and crushing: 95-105 parts by weight of bamboo charcoal powder prepared by the aforementioned method, 10-20 parts by weight of germanium stone powder purchased above, 0-10 parts by weight of magnetite powder, 0-10 parts by weight of tourmaline powder, 1-5 parts by weight of industrial starch and 10-25 parts by weight of water purchased are added in turn, blended and mixed well, and then sent to a roller press to be rolled into sheets, and then crushed into 800-1000 meshes to become bamboo charcoal ore composite powder. used as an additive;

2. Production of semi-rigid polyurethane foam products:

(1) Prepare raw materials: The purchased raw materials and their weight ratios are 95-105 parts of polyether polyol, 60-120 parts of diisocyanate, 5-15 parts of bamboo charcoal ore composite powder prepared in step 1, 5-15 parts Foaming agent, 0.5-5 parts of catalyst, 0.5-5 parts of water, 0.5-5 parts of silicone oil; the polyether polyol is a mixture of at least two polyether polyols with different hydroxyl values, and the diisocyanate is modified MDI, namely 4 , 4'-diphenylmethane diisocyanate, blowing agent is low-boiling point organic matter i.e. pentane or dichloromethane, catalyst is any one in triethylenediamine, methyl ethyl ketone peroxide and stannous octoate;

(2) Foam molding into the mold: According to the above weight ratio, first add polyether polyol, and then add various raw materials except diisocyanate in turn, mix well, keep warm at 30-40°C, select and prepare The metal mold that matches the product is heated to 50-60°C, the above-mentioned mixture and diisocyanate are injected into the mold at high speed to foam for 5-15 minutes, and the selected semi-rigid polyurethane foam product is produced after demoulding. the

The beneficial effect of the present invention is: use the semi-rigid polyurethane foam produced by this method to make products such as automobile steering wheel, instrument panel, and compartment materials, which have strong moisture absorption and deodorization, and make the user be in a place rich in negative ions and oxygen at close range. , In a small environment with high far-infrared radiation rate, it is beneficial to promote blood circulation, increase blood oxygen content, and protect the body. the

Detailed ways

The present invention is illustrated below in conjunction with the examples. Raw materials and weight ratio values thereof for preparing bamboo charcoal ore composite powder (hereinafter referred to as composite powder) are listed in Table 1 with eight examples:

Embodiment 1 (see table 1 embodiment 1 raw material and its weight ratio value): the bamboo section material is dropped in the tubular moving bed retort carbonization furnace, the bamboo charcoal made by the method described in the preparation of the bamboo charcoal powder of step 1 105 parts of germanium powder, 20 parts of germanium stone powder, 10 parts of magnetite powder, 10 parts of tourmaline powder, 5 parts of starch and 25 parts of water are added one by one. into bamboo charcoal ore composite powder as an additive. the

All the other examples 2-8 refer to the raw materials and proportioning values of the corresponding examples in Table 1, and the same method as in Example 1 is used to obtain this bamboo charcoal ore composite powder, which is used as an additive, among which examples 1-3 are preferred. the

Then the raw material and its weight portion proportioning value of producing semi-rigid polyurethane foam product are listed in Table 2 with eight embodiments:

Embodiment 9 (see Table 2 Embodiment 9 raw materials and their weight ratio values): first add 105 parts of polyether polyols, then add 15 parts of bamboo charcoal ore composite powder, 15 parts of pentane, 5 parts of triethylenediethylene diethylene glycol one by one Mix well after amine, 5 parts of water and 5 parts of silicone oil, keep warm at 30-40°C, select a mold that matches the product to be made, such as a metal mold for a steering wheel of a car, heat it to 50-60°C, mix the above mixture with 120 parts Diisocyanate is injected into the metal mold at high speed and foamed for 5-15 minutes at the same time, and the semi-rigid polyurethane foam steering wheel is formed after demoulding. the

For the rest of Examples 10-16, refer to Table 2 for the corresponding examples of raw materials and their weight ratios, and use the same method as Example 9 to prepare semi-rigid polyurethane foam products, among which Examples 9-11 are preferred. the

Claims (1)

1. health bamboo charcoal composite powder semi-hard polyurethane production process of foamed is characterized in that carrying out as follows:

One, as the preparation of the bamboo charcoal ore composite powder of additive:

(1) preparation of bamboo charcoal powder: bamboo wood is split the section of being divided into material; Input have fumigation dry with charing in advance, main charing, calcining refining three phases temperature function and the high-temperature zone temperature can reach in 700-1000 ℃ the charring furnace; The igniting smoldering; In 100-200 ℃, carry out the dry and preparatory charing of fumigation, 10-15h consuming time; When carrying out main charing, temperature control 200-450 ℃, 10-15h consuming time, back temperature control 450-600 ℃, 5-8h consuming time; After getting into the calcining refining stage, top temperature 700-1000 ℃, 600 ℃-top temperature of temperature control; 2-3h consuming time; Move to airtight cooling section in the stove voluntarily by gravity at last, secluding air cooling 6-12h, discharging; Be ground into 800-1000 purpose bamboo charcoal powder, aperture 0.5-50nm, total hole volume 0.20-0.35cm ³/ g, micropore volume 0.15-0.30cm ³/ g, proportion 0.7-1.1g/cm ³

(2) buying of mineral powder: want to buy germanite powder, magnet powder and the tourmaline powder that is ground into 100-300nm to mining company respectively;

(3) buy industrial starch;

(4) be mixed and pulverize: the industrial starch 1-5 weight part and the 10-25 weight parts water that prepare the bamboo charcoal powder 95-105 weight part of gained, the aforementioned germanite powder 10-20 weight part of buying, magnet powder 0-10 weight part, tourmaline powder 0-10 weight part, buy with preceding method; Add successively that to send into the roll squeezer roll-in after blend is mixed thoroughly in blocks; Be ground into the 800-1000 order again and be bamboo charcoal ore composite powder, as additive;

Two, the production of semi-hard polyurethane froth product:

(1) get the raw materials ready: raw material of buying and weight part proportioning value thereof are bamboo charcoal ore composite powder, 5-15 part whipping agent, 0.5-5 part catalyzer, 0.5-5 part water, the 0.5-5 part silicone oil that 95-105 part polyether glycol, 60-120 part vulcabond, 5-15 part step 1 make; Polyether glycol wherein is the polyether glycol mixture of at least two kinds of different hydroxyl values; Vulcabond is 4 for modification MDI; 4;-'-diphenylmethane diisocyanate, whipping agent are that low-boiling-point organic compound is pentane or methylene dichloride, catalyzer be in Sanya diethylammonium diamines, methyl ethyl ketone peroxide and the stannous octoate any;

(2) go into the mould foaming: by above-mentioned weight part proportioning value, add polyether glycol earlier, add other the various raw materials except that vulcabond more successively; Mix thoroughly, be incubated 30-40 ℃, the selected metal die that matees with desire system product; Heat to 50-60 ℃; With above-mentioned compound and vulcabond, inject mould foaming 5-15min simultaneously at a high speed, selected semi-hard polyurethane froth product is promptly processed in the demoulding.