Liquid silicone rubber for artificial leathers

A liquid silicone rubber and artificial leather technology, applied in the field of silicone rubber, can solve the problems of short service life, toxic raw materials, harmful to human body, etc., and achieve the effect of improving mold release performance, good fluidity, and increasing the number of reuse

Active Publication Date: 2018-04-10
CHENGDU GUIBAO SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two products not only have poisonous raw materials, but also produce harmful volatiles during the production process, and the products have poor resilience, air permeability, temperature resistance and aging resistance, and their service life is short.
Patent CN 101280521A discloses a liquid silicone rubber for artificial leather using vinyl silicone rubber and vinyl silicone resin as the main raw materials. The vinyl silicone rubber used has a viscosity above 500 Pa·s, so the prepared liquid silicone rubber for artificial leather flows Poor performance, usually need to add solvent to dilute during construction, generate VOC, pollute the environment

Method used

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  • Liquid silicone rubber for artificial leathers
  • Liquid silicone rubber for artificial leathers
  • Liquid silicone rubber for artificial leathers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Take 100 parts of vinyl silicone oil, 40 parts of white carbon black, 5 parts of crosslinking agent, 0.2 parts of platinum complex, 0.05 parts of inhibitor, 1.5 parts of color paste, 3 parts of chain extender, 4 parts of release agent, and use high-speed Stir evenly with a disperser, then make artificial leather by coating, and vulcanize at 130°C for 5 minutes.

[0021] Among them, the vinyl silicone oil is intermixed with 2Pa·s and 20Pa·s vinyl silicone oil, and the vinyl content is 0.4%. The crosslinking agent is hydrogen-containing silicone oil with a viscosity of 20 mPa·s and a hydrogen content of 0.45%. The inhibitor is methyl butynol. The chain extender is terminal hydrogen-containing silicone oil with a viscosity of 2mPa·s. The release agent is methyl silicone rubber with a viscosity of 5000Pa·s.

Embodiment 2

[0023] Take 100 parts of vinyl silicone oil, 30 parts of white carbon black, 2.5 parts of crosslinking agent, 0.24 parts of platinum complex, 0.1 part of inhibitor, 5 parts of color paste, 6 parts of mold release agent, and use a high-speed disperser to stir evenly, and then The artificial leather is made by coating and vulcanized at 160° C. for 5 minutes.

[0024] Among them, the vinyl silicone oil is intermixed with 6Pa·s and 80Pa·s vinyl silicone oil, and the vinyl content is 0.3%. The crosslinking agent is hydrogen-containing silicone oil with a viscosity of 50 mPa·s and a hydrogen content of 0.8%. The inhibitor is methyl butynol. The release agent is methyl silicone rubber with a viscosity of 4000Pa·s.

Embodiment 3

[0026] Take 100 parts of vinyl silicone oil, 20 parts of white carbon black, 4 parts of crosslinking agent, 0.5 part of platinum complex, 0.05 part of inhibitor, 0.5 part of color paste, 6 parts of mold release agent, stir evenly with a high-speed disperser, and then The artificial leather is made by coating and vulcanized for 3 minutes at 130°C.

[0027] Among them, the vinyl silicone oil is intermixed with 1Pa·s and 300Pa·s vinyl silicone oil, and the vinyl content is 0.15%. The crosslinking agent is hydrogen-containing silicone oil with a viscosity of 100 mPa·s and a hydrogen content of 0.6%. The inhibitor is methyl butynol. The release agent is methyl silicone rubber with a viscosity of 6000Pa·s.

[0028] The artificial leather liquid silicone rubber prepared by above-mentioned embodiment has carried out some performance results as shown in the table below:

[0029]

[0030]

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Abstract

The invention discloses a liquid silicone rubber for artificial leathers. The liquid silicone rubber for the artificial leathers consists of the following components in parts by weight: 100 parts of vinyl silicone oil, 15-50 parts of white carbon black, 1-10 parts of cross-linking agent, and 0.05-2 parts of platinum complex, 0.01-5 parts of inhibitor, 0-20 parts of color paste, 0-10 parts of chainextender, and 1-20 parts of mold release agent. According to the liquid silicone rubber for the artificial leathers, the vinyl silicone oil with a viscosity of 0.5-500 Pa.s is used as a base polymer,and the white carbon black is used as a reinforcing filler, so that the prepared liquid silicone rubber for the artificial leathers has a good fluidity, does not need addition of a solvent for dilution during application, and is more friendly to environment; and methyl silicone rubber is used as an internal mold release agent, so that mold release performance can be significantly improved on a basis of almost not influencing the performance of the liquid silicone rubber, and number of reuse times of a release paper can be improved, and at the same time a slippery touch can be imparted to theartificial leathers.

Description

technical field [0001] The invention relates to a silicone rubber, in particular to a liquid silicone rubber for artificial leather. Background technique [0002] The artificial leather used in the market is mainly polyurethane and polyvinyl chloride artificial leather. These two products not only have poisonous raw materials, but also produce harmful volatiles in the production process, and the products have poor resilience, air permeability, temperature resistance and aging resistance, and their service life is short. Patent CN 101280521A discloses a liquid silicone rubber for artificial leather using vinyl silicone rubber and vinyl silicone resin as the main raw materials. The vinyl silicone rubber used has a viscosity above 500 Pa·s, so the prepared liquid silicone rubber for artificial leather flows The performance is very poor, and it is usually necessary to add solvents to dilute during construction, which will generate VOC and pollute the environment. Contents of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/04C08L83/05C08K13/02C08K3/36
CPCC08L83/04C08K2201/006C08L2205/035C08L2205/025C08K13/02C08K3/36
Inventor 陈相全邓博夫骆捷黄强罗晓锋王有治
Owner CHENGDU GUIBAO SCI & TECH
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