阅读说明：本技术 一种鞋用海绵及其生产方法 (Sponge for shoes and production method thereof ) 是由 丁家辉 于 2021-07-29 设计创作，主要内容包括：一种鞋用海绵及其生产方法,鞋用海绵包括以下原料：甲苯二异氰酸酯、聚醚丙二醇、聚醚丙三醇、三乙烯二胺、三乙胺、发泡剂、稳泡剂、催化剂、蛤粉、海泡石份、蒙脱土,通过加入蛤粉、海泡石粉、蒙脱土最为补强剂,先与聚醚丙二醇、聚醚丙三醇、甲苯二异氰酸酯搅拌混合,然后在发泡剂的作用下,蛤粉、海泡石粉、蒙脱土填充到基体中,对泡孔壁起到一定的支撑作用,保证泡沫不塌泡、不收缩,提高制得的鞋用海绵的弹性和韧性。(A sponge for shoes and a production method thereof are disclosed, the sponge for shoes comprises the following raw materials: toluene diisocyanate, polyether propylene glycol, polyether glycerol, triethylene diamine, triethylamine, a foaming agent, a foam stabilizer, a catalyst, clam powder, sepiolite and montmorillonite are added as reinforcing agents, the clam powder, the sepiolite powder and the montmorillonite are stirred and mixed with the polyether propylene glycol, the polyether glycerol and the toluene diisocyanate firstly, then under the action of the foaming agent, the clam powder, the sepiolite powder and the montmorillonite are filled in a matrix to play a certain supporting role on the foam cell wall, foam collapse and shrinkage are avoided, and the elasticity and the toughness of the prepared sponge for shoes are improved.)

1. A sponge for shoes is characterized in that: the feed comprises the following raw materials in parts by weight: 45-60 parts of toluene diisocyanate, 40-50 parts of polyether propylene glycol, 30-40 parts of polyether glycerol, 2.5-4.2 parts of triethylene diamine, 1.8-3.2 parts of triethylamine, 3.6-5.2 parts of a foaming agent, 4.8-6.5 parts of a foam stabilizer, 1-2 parts of a catalyst, 5-8 parts of clam powder, 3-5 parts of sepiolite and 2-3 parts of montmorillonite;

the foam stabilizer is composed of zinc cyanurate, dimethyl silicone oil, sodium lauryl sulfate, tristearin and triethanolamine according to the weight ratio of 1:2-2.6:0.5-0.8:0.1-0.2: 0.65-0.95.

2. The sponge for shoes as claimed in claim 1, wherein: the foaming agent is prepared from dichloromethane, petroleum ether, sodium dodecyl sulfate and trichlorofluoromethane in a weight ratio of 1: 0.48-0.56:1.2-1.36: 0.8-0.92.

3. The sponge for shoes as claimed in claim 1, wherein: the catalyst is composed of dibutyltin diacetate and stannous benzoate according to the mass part ratio of 1: 1-2.

4. A production method of sponge for shoes is characterized in that: the method comprises the following steps:

step one, adding polyether propylene glycol, polyether glycerol, toluene diisocyanate, clam powder, sepiolite powder and montmorillonite into a container in sequence, and stirring and reacting for 1-2 hours at the temperature of 40-50 ℃;

step two, adding a foaming agent, triethylene diamine, triethylamine, a foam stabilizer and a catalyst into the mixture prepared in the step one in sequence, and stirring and reacting for 2-3h under the conditions that the temperature is 70-80 ℃ and the pressure is (-0.1) MPa;

step three, pouring the mixture prepared in the step two into a mould, and demoulding after curing and forming;

and step four, drying the demoulded product at 80-90 ℃ for 2-3h to obtain the sponge for the shoes.

5. The method for producing a sponge for shoes as claimed in claim 4, wherein: in the third step, the curing temperature is 30-40 ℃, and the curing time is 25-35 min.

6. The method for producing a sponge for shoes as claimed in claim 4, wherein: in the fourth step, the drying process is specifically controlled as follows: placing the product in an oven, heating to 35 deg.C at room temperature at 2 deg.C/min, and maintaining for 20-30 min; then heating to 60 ℃ at the speed of 3 ℃/min, and preserving heat for 15-20 min; then the temperature is raised to 80-90 ℃ at the speed of 1 ℃/min, and the temperature is kept for 2-3 h.

7. The method for producing a sponge for shoes as claimed in claim 4, wherein: in the first step, the stirring speed is 200-300 r/min; in the second step, the stirring speed is 400-500 r/min.

Technical Field

The invention belongs to the field of sponge production, and particularly relates to a sponge for shoes and a production method thereof.

Background

The sponge is an elastic material made of foamed plastic polymer, and the sponge has the characteristics of heat preservation, heat insulation, sound absorption, shock absorption, flame retardance, good ventilation and the like, so that the sponge relates to multiple industries such as shoe and clothing industry, automobile industry, battery industry, cosmetic industry, home furnishing and the like.

The history of shoes has long developed, and the production of shoes is an important industry in the light industry of China and is a component of the clothing industry. There are various classification methods of shoes, including men's shoes, women's shoes, children's shoes, old people's shoes, etc., depending on wearing objects; according to the style, the head shape is provided with a square head, a round head, a pointed end and the like, and the heel shape is provided with a flat heel, a high heel, a wedge heel and the like. According to the main material, there are leather shoes, cloth shoes, plastic shoes, etc. Wherein, the constitution structure of leather shoes generally includes: upper, insole, sole (outsole, midsole), heel, etc.

Due to the transformation of social form, society is more and more advanced, people live more abundantly, and the quality requirements for using and wearing articles such as shoes are relatively increased. Wherein, the insole belongs to the accessory material product of shoes and plays an important role in the daily life of people. With the continuous development of human socioeconomic and shoe-making technologies, people have not satisfied the conventional functions of insoles, so that the insoles are given more additional functions. The insole is developed from single variety to multi-variety and multi-function, and the structure, material and performance thereof are continuously improved.

Through the inspection of industrial practice and the application of multiple combinations, the sponge insole is used as a first choice shoe auxiliary material for the design of domestic and foreign shoes due to good air permeability, strong comfort and exquisite product appearance, but because the shoe making process is backward and the product grade is not high, the hardness of the sponge cushion of the rubber shoes is higher, the elasticity is insufficient, the buffer effect on the weight of the human body in the wearing process is not obvious, the foot fatigue of the human body is high, and the further improvement is needed.

Disclosure of Invention

The object of the present invention is to overcome the drawbacks of the prior art and to provide a sponge for shoes, and another object is to provide a method for producing the sponge for shoes.

The invention adopts the following technical scheme:

the sponge for shoes comprises the following raw materials in parts by weight: 45-60 parts of toluene diisocyanate, 40-50 parts of polyether propylene glycol, 30-40 parts of polyether glycerol, 2.5-4.2 parts of triethylene diamine, 1.8-3.2 parts of triethylamine, 3.6-5.2 parts of a foaming agent, 4.8-6.5 parts of a foam stabilizer, 1-2 parts of a catalyst, 5-8 parts of clam powder, 3-5 parts of sepiolite and 2-3 parts of montmorillonite;

the foam stabilizer is composed of zinc cyanurate, dimethyl silicone oil, sodium lauryl sulfate, tristearin and triethanolamine according to the weight ratio of 1:2-2.6:0.5-0.8:0.1-0.2: 0.65-0.95.

Further, the foaming agent is prepared from dichloromethane, petroleum ether, sodium dodecyl sulfate and trichlorofluoromethane in a weight ratio of 1: 0.48-0.56:1.2-1.36: 0.8-0.92.

Further, the catalyst is composed of dibutyltin diacetate and stannous benzoate according to the mass part ratio of 1: 1-2.

A production method of sponge for shoes comprises the following steps:

step one, adding polyether propylene glycol, polyether glycerol, toluene diisocyanate, clam powder, sepiolite powder and montmorillonite into a container in sequence, and stirring and reacting for 1-2 hours at the temperature of 40-50 ℃;

step two, adding a foaming agent, triethylene diamine, triethylamine, a foam stabilizer and a catalyst into the mixture prepared in the step one in sequence, and stirring and reacting for 2-3h under the conditions that the temperature is 70-80 ℃ and the pressure is (-0.1) MPa;

step three, pouring the mixture prepared in the step two into a mould, and demoulding after curing and forming;

and step four, drying the demoulded product at 80-90 ℃ for 2-3h to obtain the sponge for the shoes.

Further, in the third step, the curing temperature is 30-40 ℃, and the curing time is 25-35 min.

Further, in the fourth step, the drying process is specifically controlled as follows: placing the product in an oven, heating to 35 deg.C at room temperature at 2 deg.C/min, and maintaining for 20-30 min; then heating to 60 ℃ at the speed of 3 ℃/min, and preserving heat for 15-20 min; then the temperature is raised to 80-90 ℃ at the speed of 1 ℃/min, and the temperature is kept for 2-3 h.

Further, in the first step, the stirring speed is 200-300 r/min; in the second step, the stirring speed is 400-500 r/min.

As can be seen from the above description of the present invention, compared with the prior art, the beneficial effects of the present invention are:

firstly, the concrete composition and proportion of the foam stabilizer are limited, and the foam stabilizer is matched with other raw materials, so that the polyether propylene glycol and the polyether glycerol achieve the foaming effect of particle shape, and the foam does not collapse or shrink, so that the prepared sponge for shoes has higher elasticity and toughness; the preparation method comprises the following steps of adding clam powder, sepiolite powder and montmorillonite as reinforcing agents, mixing polyether propylene glycol, polyether glycerol and toluene diisocyanate under stirring, filling the clam powder, sepiolite powder and montmorillonite into a matrix under the action of a foaming agent, and performing a certain supporting effect on cell walls to ensure that foams do not collapse and shrink and improve the elasticity and toughness of the prepared sponge for shoes; the added clam powder can be used as a filler and a pigment to limit the color of the prepared sponge; the added sepiolite powder and montmorillonite can also carry out modification treatment on polyether propylene glycol and polyether glycerol, so that the elasticity and toughness of the sponge are enhanced, and the service life is prolonged;

secondly, the specific composition and proportion of the foaming agent are limited, and the foaming agent is matched with the foam stabilizer, so that the foaming times of the polyether propylene glycol and the polyether glycerol are high, the foam stability is good, and meanwhile, the foaming agent is matched with the catalyst, so that an ideal foaming effect and a curing effect are achieved, and the performance of the product is improved.

Detailed Description

The invention is further described below by means of specific embodiments.

The sponge for shoes comprises the following raw materials in parts by weight: 45-60 parts of toluene diisocyanate, 40-50 parts of polyether propylene glycol, 30-40 parts of polyether glycerol, 2.5-4.2 parts of triethylene diamine, 1.8-3.2 parts of triethylamine, 3.6-5.2 parts of a foaming agent, 4.8-6.5 parts of a foam stabilizer, 1-2 parts of a catalyst, 5-8 parts of clam powder, 3-5 parts of sepiolite and 2-3 parts of montmorillonite.

Wherein, the foam stabilizer is composed of zinc cyanurate, dimethyl silicone oil, sodium lauryl sulfate, tristearin and triethanolamine according to the weight ratio of 1:2-2.6:0.5-0.8:0.1-0.2: 0.65-0.95.

The foaming agent is prepared from dichloromethane, petroleum ether, sodium dodecyl sulfate and trichlorofluoromethane in parts by weight of 1: 0.48-0.56:1.2-1.36: 0.8-0.92.

The catalyst consists of dibutyltin diacetate and stannous benzoate according to the mass ratio of 1: 1-2.

The production method comprises the following steps:

step one, adding polyether propylene glycol, polyether glycerol, toluene diisocyanate, clam powder, sepiolite powder and montmorillonite into a container in sequence, and stirring and reacting for 1-2 hours at the temperature of 40-50 ℃;

step two, adding a foaming agent, triethylene diamine, triethylamine, a foam stabilizer and a catalyst into the mixture prepared in the step one in sequence, and stirring and reacting for 2-3h under the conditions that the temperature is 70-80 ℃ and the pressure is (-0.1) MPa;

step three, pouring the mixture prepared in the step two into a mould, and demoulding after curing and forming, wherein the curing temperature is 30-40 ℃, and the curing time is 25-35 min;

step four, drying the demoulded product at 80-90 ℃ for 2-3h to obtain the sponge for the shoes, wherein the drying process is specifically controlled as follows: placing the product in an oven, heating to 35 deg.C at room temperature at 2 deg.C/min, and maintaining for 20-30 min; then heating to 60 ℃ at the speed of 3 ℃/min, and preserving heat for 15-20 min; then the temperature is raised to 80-90 ℃ at the speed of 1 ℃/min, and the temperature is kept for 2-3 h.

Wherein, in the first step, the stirring speed is 200-300 r/min; in the second step, the stirring speed is 400-500 r/min.

Example 1

The sponge for shoes comprises the following raw materials in parts by weight: 45 parts of toluene diisocyanate, 50 parts of polyether propylene glycol, 30 parts of polyether glycerol, 2.5 parts of triethylene diamine, 3.2 parts of triethylamine, 3.6 parts of foaming agent, 6.5 parts of foam stabilizer, 1 part of catalyst, 8 parts of clam powder, 3 parts of sepiolite and 2 parts of montmorillonite.

Wherein, the foam stabilizer is composed of zinc cyanurate, dimethyl silicone oil, sodium lauryl sulfate, tristearin and triethanolamine according to the weight ratio of 1:2:0.8:0.1: 0.65.

The foaming agent is prepared from dichloromethane, petroleum ether, sodium dodecyl sulfate and trichlorofluoromethane in parts by weight of 1: 0.48:1.36: 0.8.

the catalyst consists of dibutyltin diacetate and stannous benzoate according to the mass part ratio of 1:1.

The production method comprises the following steps:

step one, adding polyether propylene glycol, polyether glycerol, toluene diisocyanate, clam powder, sepiolite powder and montmorillonite into a container in sequence, and stirring and reacting for 2 hours at the temperature of 40 ℃;

step two, adding a foaming agent, triethylene diamine, triethylamine, a foam stabilizer and a catalyst into the mixture prepared in the step one in sequence, and stirring and reacting for 3 hours at the temperature of 70 ℃ and the pressure of (-0.1) MPa;

step three, pouring the mixture prepared in the step two into a mold, and demolding after curing and forming, wherein the curing temperature is 30 ℃, and the curing time is 35 min;

step four, drying the demoulded product at 80 ℃ for 3 hours to obtain the sponge for the shoes, wherein the drying process is specifically controlled as follows: placing the product in an oven, heating to 35 deg.C at room temperature at 2 deg.C/min, and maintaining for 20 min; then heating to 60 ℃ at the speed of 3 ℃/min, and preserving heat for 20 min; then the temperature is raised to 80 ℃ at the speed of 1 ℃/min, and the temperature is kept for 3 h.

Wherein in the first step, the stirring speed is 200 r/min; in the second step, the stirring speed is 400 r/min.

Example 2

The sponge for shoes comprises the following raw materials in parts by weight: 60 parts of toluene diisocyanate, 40 parts of polyether propylene glycol, 40 parts of polyether glycerol, 4.2 parts of triethylene diamine, 1.8 parts of triethylamine, 5.2 parts of foaming agent, 4.8 parts of foam stabilizer, 2 parts of catalyst, 5 parts of clam powder, 5 parts of sepiolite and 3 parts of montmorillonite.

Wherein, the foam stabilizer is composed of zinc cyanurate, dimethyl silicone oil, sodium lauryl sulfate, tristearin and triethanolamine according to the weight ratio of 1:2.6:0.5:0.2: 0.95.

The foaming agent is prepared from dichloromethane, petroleum ether, sodium dodecyl sulfate and trichlorofluoromethane in parts by weight of 1: 0.56:1.2: 0.92.

the catalyst consists of dibutyltin diacetate and stannous benzoate according to the mass part ratio of 1:2.

The production method comprises the following steps:

step one, adding polyether propylene glycol, polyether glycerol, toluene diisocyanate, clam powder, sepiolite powder and montmorillonite into a container in sequence, and stirring and reacting for 1h in an environment with the temperature of 50 ℃;

step two, adding a foaming agent, triethylene diamine, triethylamine, a foam stabilizer and a catalyst into the mixture prepared in the step one in sequence, and stirring and reacting for 2 hours at the temperature of 80 ℃ and the pressure of (-0.1) MPa;

step three, pouring the mixture prepared in the step two into a mold, and demolding after curing and forming, wherein the curing temperature is 40 ℃, and the curing time is 25 min;

step four, drying the demoulded product at 90 ℃ for 2 hours to obtain the sponge for the shoes, wherein the drying process is specifically controlled as follows: placing the product in an oven, heating to 35 deg.C at room temperature at 2 deg.C/min, and maintaining for 30 min; then heating to 60 ℃ at the speed of 3 ℃/min, and keeping the temperature for 15 min; then the temperature is raised to 90 ℃ at the speed of 1 ℃/min, and the temperature is kept for 2 h.

Wherein in the first step, the stirring speed is 300 r/min; in the second step, the stirring speed is 500 r/min.

Example 3

The sponge for shoes comprises the following raw materials in parts by weight: 53 parts of toluene diisocyanate, 45 parts of polyether propylene glycol, 35 parts of polyether glycerol, 3.2 parts of triethylene diamine, 2.4 parts of triethylamine, 4.3 parts of foaming agent, 5.7 parts of foam stabilizer, 1.5 parts of catalyst, 6 parts of clam powder, 4 parts of sepiolite and 2.5 parts of montmorillonite.

Wherein, the foam stabilizer is composed of zinc cyanurate, dimethyl silicone oil, sodium lauryl sulfate, tristearin and triethanolamine according to the weight ratio of 1:2.3:0.64:0.16: 0.86.

The foaming agent is prepared from dichloromethane, petroleum ether, sodium dodecyl sulfate and trichlorofluoromethane in parts by weight of 1: 0.52:1.27: 0.87.

the catalyst consists of dibutyltin diacetate and stannous benzoate according to the mass part ratio of 1: 1.5.

The production method comprises the following steps:

step one, adding polyether propylene glycol, polyether glycerol, toluene diisocyanate, clam powder, sepiolite powder and montmorillonite into a container in sequence, and stirring and reacting for 1.5 hours at the temperature of 45 ℃;

step two, adding a foaming agent, triethylene diamine, triethylamine, a foam stabilizer and a catalyst into the mixture prepared in the step one in sequence, and stirring and reacting for 2.5 hours at the temperature of 75 ℃ and the pressure of (-0.1) MPa;

step three, pouring the mixture prepared in the step two into a mold, and demolding after curing and forming, wherein the curing temperature is 35 ℃, and the curing time is 30 min;

step four, drying the demoulded product at 85 ℃ for 2.5 hours to obtain the sponge for the shoes, wherein the drying process is specifically controlled as follows: placing the product in an oven, heating to 35 deg.C at room temperature at 2 deg.C/min, and keeping the temperature for 25 min; then heating to 60 ℃ at the speed of 3 ℃/min, and preserving heat for 18 min; then the temperature is raised to 85 ℃ at the speed of 1 ℃/min, and the temperature is kept for 2.5 h.

Wherein in the first step, the stirring speed is 250 r/min; in the second step, the stirring speed is 450 r/min.

The sponges for shoes prepared in the three examples were tested with the sponges for shoes in the prior art to obtain the following test data, which are shown in the following table:

TABLE 1 test data sheet for each example

According to the table, the strength and elasticity of the sponge for shoes are superior to those of the sponge for shoes in the prior art, the production requirement is met, the concrete composition and proportion of the foam stabilizer are limited, and the foam stabilizer is matched with other raw materials, so that the polyether propylene glycol and the polyether glycerol achieve the foaming effect of granular shapes, the foam does not collapse or shrink, and the prepared sponge for shoes has higher elasticity and toughness; the preparation method comprises the following steps of adding clam powder, sepiolite powder and montmorillonite as reinforcing agents, mixing polyether propylene glycol, polyether glycerol and toluene diisocyanate under stirring, filling the clam powder, sepiolite powder and montmorillonite into a matrix under the action of a foaming agent, and performing a certain supporting effect on cell walls to ensure that foams do not collapse and shrink and improve the elasticity and toughness of the prepared sponge for shoes; the added clam powder can be used as a filler and a pigment to limit the color of the prepared sponge; the added sepiolite powder and montmorillonite can also modify polyether propylene glycol and polyether glycerol, enhance the elasticity and toughness of the sponge and prolong the service life.

The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents and modifications within the scope of the description.