Graphene in-situ modified polyurethane and method for manufacturing synthetic leather with high physical properties

A technology of graphene modification and in-situ modification, which is applied in textiles and papermaking, can solve the problems of inability to improve the performance of polyurethane and synthetic leather, and achieve obvious innovation, improve quality level, and improve heat resistance. Effect

Inactive Publication Date: 2016-07-06
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the physical properties of polyurethane, predecessors have carried out a lot of modification work, but they often lose sight of one another and

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0031] Example 1: Manufacture of dry synthetic shoe upper leather

[0032] (1) Modification of graphene (parts by weight)

[0033] Add 10 parts of enhanced graphene to 90 parts of propylene glycol methyl ether acetate, add 10 parts of KH-550 silicone coupling agent, and react at 70°C for 24 hours to obtain lipophilic modified graphene;

[0034] (2) Preparation of graphene in-situ modified polyurethane slurry (parts by weight);

[0035] ① Preparation of surface treatment agent: add 1.0 part of modified graphene to 100 parts of polyurethane for surface treatment with a solid content of 20%, appropriate amount of wetting and leveling agent, defoamer, thickener and other additives and color paste to mix evenly , To obtain the surface treatment agent modified in situ of graphene;

[0036] ②Preparation of surface layer slurry: In 100 parts of polyurethane solution for surface layer with 30% solid content, add 0.5 part of modified graphene, appropriate amount of leveling agent, defoamer, thic...

Example Embodiment

[0042] Example 2: Manufacturing of wet synthetic sofa leather

[0043] (1) Modification of graphene (parts by weight)

[0044] Add 5 parts of enhanced graphene and 5 parts of thermally conductive graphene to 90 parts of dimethylformamide, 5 parts of KH-560 silicone coupling agent, and react at 70°C for 24 hours to obtain lipophilic modified graphene ;

[0045] (2) Preparation of graphene in-situ modified polyurethane slurry (parts by weight);

[0046] ①Preparation of surface treatment agent: add 0.8 part of modified graphene to 100 parts of polyurethane for surface treatment with 25% solid content, appropriate amount of wetting and leveling agent, defoamer, thickener and other additives and color paste are mixed evenly , To obtain the surface treatment agent modified in situ of graphene;

[0047] ②Preparation of surface layer slurry: in 100 parts of polyurethane solution for surface layer with 30% solid content, add 0.4 part of modified graphene, appropriate amount of leveling agent,...

Example Embodiment

[0053] Example 3: Manufacturing of dry-process car seat leather

[0054] (1) Modification of graphene (parts by weight)

[0055] Add 10 parts of enhanced graphene to 45 parts of propylene dimethyl formamide and 45 parts of glycol methyl ether acetate, add 10 parts of KH-602 silicone coupling agent, and react at 70°C for 24 hours to obtain lipophilic modification. Sexual graphene;

[0056] (2) Preparation of graphene in-situ modified polyurethane slurry (parts by weight);

[0057] ① Preparation of surface treatment agent: add 0.7 part of modified graphene to 100 parts of polyurethane for surface treatment with 20% solid content, appropriate amount of wetting and leveling agent, defoamer, thickener and other additives, and color paste are mixed evenly , To obtain the surface treatment agent modified in situ of graphene;

[0058] ②Preparation of surface layer slurry: In 100 parts of polyurethane solution for surface layer with 30% solid content, add 0.5 part of modified graphene, approp...

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PUM

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Abstract

The invention discloses graphene in-situ modified polyurethane and a method for manufacturing synthetic leather with high physical properties. The graphene in-situ modified polyurethane is characterized in that graphene is firstly subjected to lipophilic modification, then the modified graphene is dispersed in a polyurethane solution in a certain proportion, and graphene in-situ modified polyurethane is prepared; the synthetic leather based on the in-situ modified graphene is prepared with traditional dry and wet processes. By means of the introduction of the graphene, the polyurethane can be strengthened and toughened, performances including abrasion resistance, scratch resistance, heat resistance, ageing resistance, static resistance, electromagnetic shielding, flame retardance and the like of a polyurethane coating are effectively improved, and the grade of the synthetic leather is improved; nevertheless, traditional processes and equipment are not changed; the polyurethane is applicable to manufacturing of various synthetic leather.

Description

technical field [0001] The invention belongs to the field of synthetic leather manufacturing, and in particular relates to a graphene in-situ modified polyurethane and a method for manufacturing synthetic leather with high physical properties. Background technique [0002] my country is the world's largest producer and consumer of artificial leather and synthetic leather. At present, there are more than 1,000 artificial leather and synthetic leather enterprises in my country, 385 enterprises above designated size, more than 2,000 back-end enterprises (finishing), more than 500 raw material and mechanical equipment enterprises, and more than 10,000 artificial leather and synthetic leather microfiber leather files. An export trader, with an annual output of more than 7 billion square meters, accounting for 73% of the world's total output. According to the statistics of the National Bureau of Statistics on the production of synthetic leather by enterprises above designated size...

Claims

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Application Information

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IPC IPC(8): D06N3/14D06N3/00
CPCD06N3/14D06N3/0063D06N3/0097D06N2211/28
Inventor 范浩军盖静陈意孙哲颜俊章培昆鲍亮
Owner SICHUAN UNIV
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