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Organic silicon synthetic leather and preparation method thereof

A technology of silicone synthetic leather and mixture, which is applied in the direction of flat products, other household appliances, textiles and papermaking, etc. It can solve the problems of unrealizable materials, localized stress concentration, cracking, etc., and achieve excellent mold release and high-efficiency bonding Effect

Pending Publication Date: 2022-04-22
GUANGZHOU RUIHE SILICONE RUBBER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process is complicated and there is a lot of waste
Moreover, the sofas and other products sewn are prone to problems such as localized stress concentration and local cracking.
If you want to achieve integrated molding, existing materials cannot achieve

Method used

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  • Organic silicon synthetic leather and preparation method thereof
  • Organic silicon synthetic leather and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1 of the present invention provides a silicone synthetic leather and a preparation method thereof. Specifically include the following steps:

[0041] (1) Preparation of the basic mixture used in surface layer preparation: under nitrogen protection, add 70 parts of vinyl polydimethylsiloxane with a vinyl content of 0.03% and a viscosity of 50 Pa·s to the kneader, and then add 30 parts of vinyl polydimethylsiloxane with a vinyl content of 2% and a viscosity of 400 Pa·s. Continue to add 30 parts of filler, the specific surface area is 100m 2 / g of precipitated silica, add 30 parts of vinyl MQ silicone resin (vinyl content 1.5%, viscosity 50Pa·s, Me in silicone resin 3 SiO 1 / 2 with SiO 4 / 2 The ratio of the group is 0.6), add 30 parts of spherical MQ silicone resin (viscosity is 12.5Pa·s, Me in the silicone resin 3 SiO 1 / 2 with SiO 4 / 2 The ratio of the group is 1.25) Stir and mix in a kneader, keep the system temperature not higher than 60°C during the whol...

Embodiment 2

[0048] Embodiment 2 of the present invention provides a silicone synthetic leather and a preparation method thereof. Specifically include the following steps:

[0049] (1) Preparation of the basic mixture used in surface layer preparation: under nitrogen protection, add 50 parts of vinyl polydimethylsiloxane with a vinyl content of 0.08% and a viscosity of 200 Pa·s to the kneader, and then add 50 parts of vinyl polydimethylsiloxane with a vinyl content of 1% and a viscosity of 200 Pa·s. Continue to add 40 parts of alumina as filler, add 20 parts of vinyl MQ silicone resin (vinyl content 0.5%, viscosity 12.5Pa·s, Me in silicone resin 3 SiO 1 / 2 with SiO 4 / 2 The ratio of the group is 1), add 40 parts of spherical MQ silicone resin (viscosity is 20Pa·s, Me in the silicone resin 3 SiO 1 / 2 with SiO 4 / 2 The ratio of the group is 0.6) Stir and mix in a kneader, keep the system temperature not higher than 60°C during the whole process; after mixing evenly, stir for 0.5h in an env...

Embodiment 3

[0056] Embodiment 3 of the present invention provides a silicone synthetic leather and a preparation method thereof. Specifically include the following steps:

[0057] (1) Preparation of the basic mixture used in surface layer preparation: under nitrogen protection, add 30 parts of vinyl polydimethylsiloxane with a vinyl content of 0.06% and a viscosity of 400 Pa·s to the kneader, and then add 70 parts of vinyl polydimethylsiloxane with a vinyl content of 0.5% and a viscosity of 400 Pa·s. Continue to add 20 parts of alumina with a specific surface area of ​​0.00000000000000000000000000000000000000000000000000. 3 SiO 1 / 2 with SiO 4 / 2 The ratio of the group is 1.5), add 35 parts of spherical MQ silicone resin (viscosity is 1Pa s, Me in the silicone resin 3 SiO 1 / 2 with SiO 4 / 2 The ratio of the group is 1) Stir and mix in a kneader, and keep the system temperature not higher than 60°C during the whole process; after mixing evenly, stir for 1 hour in an environment not highe...

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Abstract

The invention discloses organic silicon synthetic leather and a preparation method thereof, and belongs to the field of synthetic leather. The organic silicon synthetic leather comprises a fluorinated silicone rubber layer surface layer, a silicone rubber layer supporting layer and a base material which are sequentially overlapped from top to bottom. Wherein the fluorine-containing silica gel surface layer enables the synthetic leather to have excellent demolding performance, and an integrated molding process can be realized. The surface layer and the supporting layer of the synthetic leather are efficiently bonded through a hydrosilylation reaction and a tackifying system, and the organic silicon leather does not delaminate and is weather-proof and durable. The preparation method disclosed by the invention is simple and easy to implement, and the prepared organic silicon leather has multiple functions and can meet various requirements.

Description

technical field [0001] The invention belongs to the field of synthetic leather, and in particular relates to an organosilicon synthetic leather and a preparation method thereof. Background technique [0002] Silicone leather is a new type of environmentally friendly leather, which uses silicone rubber as raw material. This new type of material is generally combined with superfine fibers, non-woven fabrics and other substrates, processed and prepared, and is suitable for various industries. It belongs to the new material industry developed in the 21st century. Compared with traditional leather, silicone leather has more advantages in hydrolysis resistance, low VOC, no odor, and environmental protection. In the case of long-term use or storage, synthetic leather such as PU / PVC will continuously release the residual solvents and plasticizers in the leather, which will affect the development of the liver, kidneys, heart and nervous system. Addition-type silicone materials are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/04C08K3/36C08L83/08C08L83/05B29D7/01D06N3/12D06N3/00
CPCC08L83/04C08L83/08B29D7/01D06N3/128D06N3/0059D06N3/0097C08K3/36
Inventor 周长伟刘天袁胥王岩
Owner GUANGZHOU RUIHE SILICONE RUBBER TECH CO LTD
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