阅读说明：本技术 一种透气防水超软蛋白皮革及制备方法 (Breathable waterproof super-soft protein leather and preparation method thereof ) 是由 姜棚 樊文静 于 2021-08-17 设计创作，主要内容包括：本发明公开了一种透气防水超软蛋白皮革及制备方法,包括有基布和原材料,所述原材料按重量份配比包括有以下组分：丝素蛋白15-25份、聚氨酯树脂8-18份、二甲基甲酰胺5-10份、水性聚氨酯浆料30-50份、发泡剂1-5份、增稠剂2-8份、稳泡剂1-7份、消泡剂1-6份、流平剂1-5份,本发明涉及皮革技术领域。本发明,解决了传统用的服装人造革在实际的穿戴过程中,易出现,发闷,变硬,衣服变形,且常规服装革给消费者的舒适度不佳的问题。(The invention discloses a breathable waterproof super-soft protein leather and a preparation method thereof, wherein the breathable waterproof super-soft protein leather comprises base cloth and raw materials, and the raw materials comprise the following components in parts by weight: 15-25 parts of silk fibroin, 8-18 parts of polyurethane resin, 5-10 parts of dimethylformamide, 30-50 parts of aqueous polyurethane slurry, 1-5 parts of foaming agent, 2-8 parts of thickening agent, 1-7 parts of foam stabilizer, 1-6 parts of defoaming agent and 1-5 parts of flatting agent. The invention solves the problems that the traditional artificial leather for clothes is easy to appear, stuffy, hard and deformed in the actual wearing process, and the comfort of the conventional clothing leather to consumers is poor.)

1. The breathable waterproof super-soft protein leather is characterized by comprising base cloth and raw materials, wherein the raw materials comprise the following components in parts by weight:

15-25 parts of silk fibroin, 8-18 parts of polyurethane resin, 5-10 parts of dimethylformamide, 30-50 parts of aqueous polyurethane slurry, 1-5 parts of foaming agent, 2-8 parts of thickening agent, 1-7 parts of foam stabilizer, 1-6 parts of defoaming agent and 1-5 parts of flatting agent.

2. The breathable waterproof super-soft protein leather is characterized by comprising the following raw materials in parts by weight:

16 parts of silk fibroin, 9 parts of polyurethane resin, 6 parts of dimethylformamide, 32 parts of waterborne polyurethane slurry, 1.5 parts of foaming agent, 2.5 parts of thickening agent, 2 parts of foam stabilizer, 1.8 parts of defoaming agent and 1.3 parts of flatting agent.

3. The breathable waterproof super-soft protein leather is characterized by comprising the following raw materials in parts by weight:

19 parts of silk fibroin, 13 parts of polyurethane resin, 6.8 parts of dimethylformamide, 40 parts of aqueous polyurethane slurry, 2.5 parts of foaming agent, 5.5 parts of thickening agent, 3.8 parts of foam stabilizer, 2.8 parts of defoaming agent and 2.5 parts of flatting agent.

4. The breathable waterproof super-soft protein leather is characterized by comprising the following raw materials in parts by weight:

24 parts of silk fibroin, 17 parts of polyurethane resin, 9 parts of dimethylformamide, 50 parts of waterborne polyurethane slurry, 4.8 parts of foaming agent, 7 parts of thickening agent, 6.5 parts of foam stabilizer, 5.5 parts of defoaming agent and 4.5 parts of flatting agent.

5. A preparation method of breathable waterproof super-soft protein leather is characterized by comprising the following steps:

s1, preparing base cloth and raw materials, and preprocessing the base cloth;

s2, preparing a Bayesian foaming layer by utilizing silk fibroin;

s3, preparing a leather laminated layer;

s4, coating polyurethane resin on the surface of the Bayesian foam layer;

s5, coating the leather facing layer on the surface of the Bayes foaming layer, and pressing the coated material by a roller press;

and S6, coating the dimethyl formamide on the surface of the leather facing layer to obtain the breathable waterproof super-soft protein leather.

6. The method for preparing the breathable waterproof super soft protein leather according to claim 5, wherein the method comprises the following steps: and S1, selecting the sea-island fiber cloth as the base cloth, cleaning the base cloth, and ironing to make the base cloth flat.

7. The method for preparing the breathable waterproof super soft protein leather according to claim 5, wherein the method comprises the following steps: in the step S2, mixing and stirring silk fibroin, aqueous polyurethane slurry, a foaming agent, a thickening agent and a foam stabilizer for 20-45min to obtain foaming slurry, pouring the foaming slurry into a rectangular frame mold, spreading a base fabric in the foaming slurry in the rectangular frame mold to immerse the base fabric into the foaming slurry, drying in an oven at the drying temperature of 50-75 ℃ for 25-35min, and taking out.

8. The method for preparing the breathable waterproof super soft protein leather according to claim 5, wherein the method comprises the following steps: and in the S3, the waterborne polyurethane slurry, the thickening agent, the defoaming agent and the flatting agent are put into a stirring machine, the mixture is subjected to centrifugal defoaming for 10-20min at the rotating speed of 2500-4500r/min at the temperature of 30-40 ℃, kept stand for 20-40min, poured into a rectangular frame mold, dried in an oven at the drying temperature of 50-80 ℃ for 20-35min and then taken out.

9. The method for preparing the breathable waterproof super soft protein leather according to claim 5, wherein the method comprises the following steps: in the S5, the temperature of the roller press is 60-80 ℃.

10. The method for preparing breathable waterproof super soft protein leather according to claims 7-8, wherein the method comprises the following steps: in the neutralization of the S2 and the neutralization of the S3, the proportion of the aqueous polyurethane slurry is 10/1, and the proportion of the thickening agent is 9/1.

Technical Field

The invention relates to the technical field of leather, in particular to breathable waterproof super-soft protein leather and a preparation method thereof.

Background

The conventional artificial leather for the clothes is influenced by materials and processes in the actual wearing process, is easy to appear, is stuffy, becomes hard, and deforms clothes, and the conventional leather for the clothes is poor in comfort level of consumers due to the fact that pores and water absorption and ventilation functions of real leather cannot be achieved. The synthetic leather can be effectively solved because of the circumstances such as vexation that airtight arouses, sclerosis in the use, brings comfortable experience for the consumer, and the project is organized professional technical personnel by the company, develops the project, and the company provides capital and place, and equipment support ensures that the project goes on smoothly.

Disclosure of Invention

The invention aims to solve the problems that the traditional artificial leather for clothes is easy to generate, stuffy and hard, and clothes deform in the actual wearing process, and the comfort of the conventional clothes leather to consumers is poor.

In order to achieve the purpose, the invention adopts the following technical scheme: the breathable waterproof super-soft protein leather comprises base cloth and raw materials, wherein the raw materials comprise the following components in parts by weight:

15-25 parts of silk fibroin, 8-18 parts of polyurethane resin, 5-10 parts of dimethylformamide, 30-50 parts of aqueous polyurethane slurry, 1-5 parts of foaming agent, 2-8 parts of thickening agent, 1-7 parts of foam stabilizer, 1-6 parts of defoaming agent and 1-5 parts of flatting agent.

Preferably, the raw materials comprise the following components in parts by weight:

16 parts of silk fibroin, 9 parts of polyurethane resin, 6 parts of dimethylformamide, 32 parts of waterborne polyurethane slurry, 1.5 parts of foaming agent, 2.5 parts of thickening agent, 2 parts of foam stabilizer, 1.8 parts of defoaming agent and 1.3 parts of flatting agent.

Preferably, the raw materials comprise the following components in parts by weight:

19 parts of silk fibroin, 13 parts of polyurethane resin, 6.8 parts of dimethylformamide, 40 parts of aqueous polyurethane slurry, 2.5 parts of foaming agent, 5.5 parts of thickening agent, 3.8 parts of foam stabilizer, 2.8 parts of defoaming agent and 2.5 parts of flatting agent.

Preferably, the raw materials comprise the following components in parts by weight:

24 parts of silk fibroin, 17 parts of polyurethane resin, 9 parts of dimethylformamide, 50 parts of waterborne polyurethane slurry, 4.8 parts of foaming agent, 7 parts of thickening agent, 6.5 parts of foam stabilizer, 5.5 parts of defoaming agent and 4.5 parts of flatting agent.

A preparation method of breathable waterproof super soft protein leather comprises the following steps:

s1, preparing base cloth and raw materials, and preprocessing the base cloth;

s2, preparing a Bayesian foaming layer by utilizing silk fibroin;

s3, preparing a leather laminated layer;

s4, coating polyurethane resin on the surface of the Bayesian foam layer;

s5, coating the leather facing layer on the surface of the Bayes foaming layer, and pressing the coated material by a roller press;

and S6, coating the dimethyl formamide on the surface of the leather facing layer to obtain the breathable waterproof super-soft protein leather.

Preferably, in S1, the base fabric is sea-island fiber fabric, and the base fabric is cleaned and ironed to be flat.

Preferably, in S2, mixing and stirring silk fibroin, the aqueous polyurethane slurry, the foaming agent, the thickener, and the foam stabilizer for 20-45min to obtain a foaming slurry, pouring the slurry into a rectangular frame mold, spreading the base fabric in the foaming slurry in the rectangular frame mold to immerse the base fabric in the foaming slurry, and drying in an oven at a drying temperature of 50-75 ℃ for 25-35min, and then taking out the base fabric.

Preferably, in S3, the aqueous polyurethane slurry, the thickener, the defoamer and the leveling agent are put into a stirring machine, the mixture is subjected to centrifugal defoaming for 10-20min at the rotation speed of 2500-4500r/min at the temperature of 30-40 ℃, kept stand for 20-40min, poured into a rectangular frame mold, and dried in an oven at the drying temperature of 50-80 ℃ for 20-35min, and then taken out.

Preferably, in the step S5, the roll temperature of the rolling press is 60 to 80 ℃.

Preferably, the proportion of the aqueous polyurethane slurry in the S2 and the proportion in the S3 are 10/1 and 9/1 respectively.

Compared with the prior art, the invention has the following beneficial effects: according to the invention, silk fibroin is added into the shellfish foaming layer, so that the shellfish foaming layer has a foam structure in a sponge shape and a honeycomb shape, and the product has better air permeability; according to the invention, in the preparation of the leather laminated layer, the using amount of the aqueous polyurethane slurry is reduced, the volatilization of a solvent can be reduced, the discharge amount of waste gas is reduced, and the special bonding slurry polyurethane resin is added, so that the bonding property of the leather laminated layer and the bass foaming layer is better; according to the invention, the dimethyl formamide is used as a surface material, so that the finished product has hand feeling and touch feeling which are the same as those of real leather.

Drawings

The invention is described in further detail below with reference to the following figures and detailed description:

FIG. 1 is a schematic view of a flow chart of a preparation method of the present invention.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

Example 1:

the breathable waterproof super-soft protein leather comprises base cloth and raw materials, wherein the raw materials comprise the following components in parts by weight:

16 parts of silk fibroin, 9 parts of polyurethane resin, 6 parts of dimethylformamide, 32 parts of waterborne polyurethane slurry, 1.5 parts of foaming agent, 2.5 parts of thickening agent, 2 parts of foam stabilizer, 1.8 parts of defoaming agent and 1.3 parts of flatting agent.

Example 2:

the breathable waterproof super-soft protein leather comprises base cloth and raw materials, wherein the raw materials comprise the following components in parts by weight:

19 parts of silk fibroin, 13 parts of polyurethane resin, 6.8 parts of dimethylformamide, 40 parts of aqueous polyurethane slurry, 2.5 parts of foaming agent, 5.5 parts of thickening agent, 3.8 parts of foam stabilizer, 2.8 parts of defoaming agent and 2.5 parts of flatting agent.

Example 3:

the breathable waterproof super-soft protein leather comprises base cloth and raw materials, wherein the raw materials comprise the following components in parts by weight:

24 parts of silk fibroin, 17 parts of polyurethane resin, 9 parts of dimethylformamide, 50 parts of waterborne polyurethane slurry, 4.8 parts of foaming agent, 7 parts of thickening agent, 6.5 parts of foam stabilizer, 5.5 parts of defoaming agent and 4.5 parts of flatting agent.

Example 4:

a preparation method of breathable waterproof super soft protein leather comprises the following steps:

s1, preparing base cloth and raw materials, and preprocessing the base cloth;

s2, preparing a Bayesian foaming layer by utilizing silk fibroin;

s3, preparing a leather laminated layer;

s4, coating polyurethane resin on the surface of the Bayesian foam layer;

s5, coating the leather facing layer on the surface of the Bayes foaming layer, and pressing the coated material by a roller press;

and S6, coating the dimethyl formamide on the surface of the leather facing layer to obtain the breathable waterproof super-soft protein leather.

Preferably, in S1, the base fabric is sea-island fiber fabric, and the base fabric is cleaned and ironed to be flat.

In the step S2, mixing and stirring silk fibroin, aqueous polyurethane slurry, a foaming agent, a thickening agent and a foam stabilizer for 21min to obtain foaming slurry, pouring the foaming slurry into a rectangular frame mold, spreading base cloth in the foaming slurry in the rectangular frame mold to enable the base cloth to be immersed in the foaming slurry, drying in an oven at the drying temperature of 50 ℃ for 26min, and taking out the base cloth.

And S3, adding the aqueous polyurethane slurry, the thickening agent, the defoaming agent and the leveling agent into a stirring machine, carrying out centrifugal defoaming on the mixture at the rotating speed of 2550r/min for 11min at the temperature of 31 ℃, standing for 21min, pouring the mixture into a rectangular frame mold, drying in an oven at the drying temperature of 50-80 ℃ for 22min, and taking out.

In the step S5, the roll temperature of the roll press is 61 ℃.

In the neutralization of the S2 and the neutralization of the S3, the proportion of the aqueous polyurethane slurry is 10/1, and the proportion of the thickening agent is 9/1.

Example 5:

a preparation method of breathable waterproof super soft protein leather comprises the following steps:

s1, preparing base cloth and raw materials, and preprocessing the base cloth;

s2, preparing a Bayesian foaming layer by utilizing silk fibroin;

s3, preparing a leather laminated layer;

s4, coating polyurethane resin on the surface of the Bayesian foam layer;

s5, coating the leather facing layer on the surface of the Bayes foaming layer, and pressing the coated material by a roller press;

and S6, coating the dimethyl formamide on the surface of the leather facing layer to obtain the breathable waterproof super-soft protein leather.

And S1, selecting the sea-island fiber cloth as the base cloth, cleaning the base cloth, and ironing to make the base cloth flat.

In the step S2, mixing and stirring silk fibroin, aqueous polyurethane slurry, a foaming agent, a thickening agent and a foam stabilizer for 35min to obtain foaming slurry, pouring the foaming slurry into a rectangular frame mold, spreading base cloth in the foaming slurry in the rectangular frame mold to enable the base cloth to be immersed in the foaming slurry, drying in an oven at the drying temperature of 60 ℃ for 30min, and taking out the base cloth.

And S3, adding the aqueous polyurethane slurry, the thickening agent, the defoaming agent and the flatting agent into a stirrer, carrying out centrifugal defoaming on the mixture at the rotating speed of 3500r/min for 15min at the temperature of 35 ℃, standing for 30min, pouring the mixture into a rectangular frame mold, drying in an oven at the drying temperature of 65 ℃ for 26min, and taking out.

In the step S5, the temperature of the roller press is 70 ℃.

In the neutralization of the S2 and the neutralization of the S3, the proportion of the aqueous polyurethane slurry is 10/1, and the proportion of the thickening agent is 9/1.

Example 6:

a preparation method of breathable waterproof super soft protein leather comprises the following steps:

s1, preparing base cloth and raw materials, and preprocessing the base cloth;

s2, preparing a Bayesian foaming layer by utilizing silk fibroin;

s3, preparing a leather laminated layer;

s4, coating polyurethane resin on the surface of the Bayesian foam layer;

s5, coating the leather facing layer on the surface of the Bayes foaming layer, and pressing the coated material by a roller press;

and S6, coating the dimethyl formamide on the surface of the leather facing layer to obtain the breathable waterproof super-soft protein leather.

And S1, selecting the sea-island fiber cloth as the base cloth, cleaning the base cloth, and ironing to make the base cloth flat.

In the step S2, mixing and stirring silk fibroin, aqueous polyurethane slurry, a foaming agent, a thickening agent and a foam stabilizer for 43min to obtain foaming slurry, pouring the foaming slurry into a rectangular frame mold, spreading a base cloth in the foaming slurry in the rectangular frame mold to immerse the base cloth in the foaming slurry, drying in an oven at 73 ℃ for 33min, and taking out.

And S3, adding the aqueous polyurethane slurry, the thickening agent, the defoaming agent and the leveling agent into a stirring machine, carrying out centrifugal defoaming on the mixture for 18min at the rotating speed of 4200r/min, standing for 38min at the temperature of 38 ℃, pouring the mixture into a rectangular frame mold, drying in an oven at the drying temperature of 79 ℃ for 34min, and taking out.

In the step S5, the temperature of the roller press is 79 ℃.

In the neutralization of the S2 and the neutralization of the S3, the proportion of the aqueous polyurethane slurry is 10/1, and the proportion of the thickening agent is 9/1.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.