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Polyurethane resin functional additive for processing hydrolysis-resistant sofa leather

A technology of polyurethane resin and functional additives, used in textiles, papermaking, coatings, etc., can solve the problems of difficult pattern shape, easy rebound, insufficient plumpness, etc., and achieve excellent hydrolysis resistance, prolonged service life, and good pattern shape. Effect

Inactive Publication Date: 2017-05-31
南平慧薇网知识产权营运有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many sofa leather products are prone to cracking or peeling after several years of use, which seriously affects the appearance quality and normal use of the sofa, thus shortening the service life of the sofa
Polyurethane resin is currently the main material for synthetic sofa leather. It has good elasticity and high strength, but it is easy to rebound after kneading and embossing, and the pattern is not easy to shape, resulting in unclear patterns and insufficient fullness.
However, the hydrolysis resistance of ordinary kneadable and embossing resins is not enough. Therefore, it is necessary to add functional additives to polyurethane resins so that it has both superior hydrolysis resistance and high plasticity to meet kneading and embossing requirements. Waiting for request

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Add 5 parts of polyvinyl butyral, 2 parts of nano rubber powder and 2 parts of C5 hydrogenated petroleum resin to 15 parts of chlorinated polyvinyl chloride, and raise the temperature to 125-130 at a heating rate of 5°C / min. ℃ heat preservation and mixing for 30 minutes, then add 2 parts of hydrogenated palm oil, 1 part of asbestos wool and 0.3 parts of maleic anhydride graft compatibilizer, continue heat preservation and mixing for 15 minutes, and then cool down to room temperature at a cooling rate of 10 ℃ / min to obtain the material I;

[0026] (2) Add 3 parts of polyethylene oxide, 3 parts of pentaerythritol stearate and 0.5 part of glass fiber powder to 6 parts of polyvinyl acetate, and heat up to 115-125 ° C at a heating rate of 10 ° C / min and mix for 15 min , and then cooled down to room temperature at a cooling rate of 5°C / min to obtain material II;

[0027] (3) Add material II, 2 parts of crospovidone and 0.5 part of cationic polyacrylamide to material I,...

Embodiment 2

[0033] (1) Add 5 parts of polyvinyl butyral, 2 parts of nano rubber powder and 1 part of C5 hydrogenated petroleum resin to 15 parts of chlorinated polyvinyl chloride, and raise the temperature to 125-130 at a heating rate of 5°C / min. ℃ heat preservation and mixing for 30 minutes, then add 2 parts of hydrogenated palm oil, 1 part of asbestos wool and 0.3 parts of maleic anhydride graft compatibilizer, continue heat preservation and mixing for 15 minutes, and then cool down to room temperature at a cooling rate of 10 ℃ / min to obtain the material I;

[0034] (2) Add 3 parts of polyethylene oxide, 3 parts of pentaerythritol stearate and 0.5 part of glass fiber powder to 5 parts of polyvinyl acetate, and heat up to 115-125 ° C at a heating rate of 10 ° C / min and mix for 15 min , and then cooled down to room temperature at a cooling rate of 5°C / min to obtain material II;

[0035] (3) Add material II, 1 part of crospovidone and 1 part of cationic polyacrylamide to material I, mix...

Embodiment 3

[0041] The functional additives prepared in Examples 1 and 2 were added to the polyurethane resin at a mass percentage of 5%, and processed into sofa leather, and the performance of the prepared sofa leather was tested.

[0042] The test results show that the sofa leather produced is soft and elastic; and has good plasticity, which can fully meet the requirements of rubbing and embossing; and in a constant temperature and humidity (70°C, 95%RH) environment, the peel strength after ten weeks Still remain above 90%.

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Abstract

The invention discloses a polyurethane resin functional additive for processing hydrolysis-resistant sofa leather, and relates to the technical field of processing of sofa leather. The polyurethane resin functional additive is prepared from the following raw materials in parts by weight: 10-15 parts of chlorinated polyvinyl chloride, 5-10 parts of polyvinyl butyral, 5-10 parts of polyvinyl acetate, 3-6 parts of polyethylene oxide, 3-6 parts of pentaerythritol stearate, 2-4 parts of hydrogenated palm oil, 2-4 parts of nanometer gelatine powder, 1-2 parts of C5 hydrogenated petroleum resin, 1-2 parts of cross-linking polyvidone, 1-2 parts of asbestos wool, 0.5-1 part of cation polyacrylamide, 0.5-1 part of a glass fiber powder and 0.3-0.5 part of a maleic anhydride grafting compatilizer. After the functional additive is assisted with polyurethane resin, excellent hydrolysis resistance, excellent elasticity and excellent intensity of the polyurethane resin can be completely reserved, the plasticity of the polyurethane resin can also be notably improved, and requirements of kneading patterns and embossing are met.

Description

[0001] Technical field: [0002] The invention relates to the technical field of sofa leather processing, in particular to a polyurethane resin functional additive for hydrolysis-resistant sofa leather processing. [0003] Background technique: [0004] Sofa leather is the main raw material for making leather sofas. It is divided into genuine leather sofa leather and polyurethane sofa leather according to its type. Due to the limited leather resources and high prices in recent years, it cannot meet the growing market demand, while polyurethane synthetic leather products have a wide range of raw materials, cheap prices, good processing performance, and have reached or exceeded the characteristics of natural leather, so they are deeply loved by people. . [0005] Sofa leather requires soft, plump, and good elasticity, and also meets the requirements of durability, especially the requirements of hydrolysis resistance. Many sofa leather products are prone to cracking or peeling a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12D06N3/00
CPCC09D7/70C09D7/61C09D7/62C09D7/63C09D7/65D06N3/0059D06N2211/28
Inventor 黄小平
Owner 南平慧薇网知识产权营运有限公司
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