Temperature-resistant silica gel leather and preparation method thereof

A technology of silica gel and leather, applied in coatings, devices for coating liquid on the surface, etc., can solve problems that hinder the research of flame-retardant leather, and achieve the effects of shortening vulcanization time, long-lasting subjectivity, and convenient operation and control

Pending Publication Date: 2021-05-28
东莞市朗晟材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main reason for this phenomenon is that it is generally believed that the leather coating layer needs to use a resin with better film-forming properties as the leather finishing agent. Such technical prejudice hinders people's research on flame-retardant leather.

Method used

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  • Temperature-resistant silica gel leather and preparation method thereof
  • Temperature-resistant silica gel leather and preparation method thereof
  • Temperature-resistant silica gel leather and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A heat-resistant silicone leather, comprising a textile base cloth and a finish layer coated on the textile base cloth, the finish layer is made of a silica gel material, and the silica gel material includes the following raw materials in parts by weight:

[0033]

[0034]

[0035] The platinum complex catalyst is a platinum-tetravinyltetramethylcyclotetrasiloxane complex with a Pt mass fraction of 2.0%; the base glue is made of α, ω-divinyl polydimethylsiloxane alkane and polymethylvinylsiloxane in a weight ratio of 1:0.3; the viscosity (25°C) of the α, ω-divinylpolydimethylsiloxane is 600 000mPa·s, and the The viscosity (25°C) of polymethylvinylsiloxane is 1000mPa·s; the viscosity (25°C) of the vinyl MQ silicone resin is 300mPa·s, and the vinyl content is 5.4%.

[0036] Each part of the modified aluminum hydroxide is prepared through such steps as:

[0037] S1. In parts by weight, weigh 30 parts of aluminum hydroxide micropowder and 1 part of ethyl acetate into...

Embodiment 2

[0048] A heat-resistant silicone leather, comprising a textile base cloth and a finish layer coated on the textile base cloth, the finish layer is made of a silica gel material, and the silica gel material includes the following raw materials in parts by weight:

[0049]

[0050] The platinum complex catalyst is a platinum-tetravinyltetramethylcyclotetrasiloxane complex with a Pt mass fraction of 2.0%; the base glue is α, ω-divinyl polydimethylsiloxane The viscosity (25°C) of the α,ω-divinyl polydimethylsiloxane is 600 000mPa·s; the viscosity (25°C) of the vinyl MQ silicone resin is 300mPa·s, and the vinyl content is 5.5 %.

[0051] Each part of the modified aluminum hydroxide is prepared through such steps as:

[0052] S1. In parts by weight, weigh 33 parts of aluminum hydroxide fine powder and 1.5 parts of ethyl acetate into the reaction device, heat to 85°C, and stir at a speed of 250r / min for 25min, and obtain mixture A after cooling, and set aside;

[0053] S2. In pa...

Embodiment 3

[0063] A heat-resistant silicone leather, comprising a textile base cloth and a finish layer coated on the textile base cloth, the finish layer is made of a silica gel material, and the silica gel material includes the following raw materials in parts by weight:

[0064]

[0065] The platinum complex catalyst is a platinum-tetravinyltetramethylcyclotetrasiloxane complex with a Pt mass fraction of 2.0%; the base glue is α, ω-divinyl polydimethylsiloxane The viscosity (25°C) of the α,ω-divinyl polydimethylsiloxane is 600 000mPa·s; the viscosity (25°C) of the vinyl MQ silicone resin is 300mPa·s, and the vinyl content is 5.6 %.

[0066] Each part of the modified aluminum hydroxide is prepared through such steps as:

[0067] S1. In parts by weight, weigh 35 parts of aluminum hydroxide micropowder and 2 parts of ethyl acetate into the reaction device, heat to 90 ° C, and stir at a speed of 300 r / min for 30 min, and obtain mixture A after cooling, and set aside;

[0068] S2. In ...

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Abstract

The invention relates to the technical field of leather, in particular to temperature-resistant silica gel leather and a preparation method thereof. The temperature-resistant silica gel leather comprises textile base cloth and a coating layer coating the textile base cloth, wherein the coating layer is made of a silica gel material, and the silica gel material comprises the following raw materials of, in parts by weight, 0-35 parts of vinyl MQ silicon resin, 0.1-0.5 part of a platinum complex catalyst, 2-6 parts of modified aluminum hydroxide, 0-5 parts of polymethyl silicate, 2-6 parts of a silanization reagent, 0.2-0.6 part of butyl titanate, 8-16 parts of a filling agent, 100-130 parts of basic gel, 1-3 parts of distilled water, 0-10 parts of a cross-linking agent, 0.1-0.5 part of a stabilizer and 0.5-1.5 parts of a coupling agent. According to the silica gel leather, under the condition that a flame retardant is not needed, a leather product can have very good flame retardance and fire resistance, has good tear strength, tensile strength, elongation at break and the like, and can be industrially produced on a large scale.

Description

technical field [0001] The invention relates to the technical field of leather, in particular to a temperature-resistant silicone leather and a preparation method thereof. Background technique [0002] The leather industry has developed rapidly in recent decades, people's demand for leather is increasing day by day, and the requirements for the safety performance of leather are getting higher and higher. As a natural polymer, leather contains elements such as C, H, O, and N. When leather burns, it can release CO, CO 2 , nitrogen oxides, etc., especially in scenarios such as air crashes and fires, the smoke generated by leather burning will greatly threaten people's lives and safety. Gain precious time during the rescue. [0003] For furniture, home decoration and handicrafts, in addition to requiring leather to be environmentally friendly, it also puts forward higher requirements for wear resistance and flame retardancy. For traditional polyurethane leather, its flame ret...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/12B05D7/24
CPCB05D7/12B05D7/24B05D2203/24B05D2601/22B05D2701/00
Inventor 潘鹤斌谭政新
Owner 东莞市朗晟材料科技有限公司
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