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Double-component organic silicon polyurethane elastomer and preparation method thereof

A polyurethane elastomer and silicone technology, which is applied in the field of two-component silicone polyurethane elastomer and its preparation, can solve the problems of aging resistance, poor hydrolysis resistance, poor wear resistance and chemical medium resistance, and difficult cleaning Clean as new and other problems, to meet the long-term use requirements, low surface energy, excellent elasticity effect

Active Publication Date: 2013-07-24
GUANGDONG BOSHENG NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyurethane elastomers can be divided into polyester type and polyether type according to different oligomer polyols. Under outdoor exposure conditions, the aging resistance and hydrolysis resistance of these two types of polyurethane elastomers are relatively poor.
At the same time, polyurethane elastomer is used as a high-frequency material for sports ground paving materials. Its surface has poor stain resistance and is difficult to clean, and it is difficult to clean it as new.
[0003] Silicone polymer has excellent high and low temperature resistance, UV resistance, oxidative degradation resistance, low surface energy and good hydrophobicity, but poor wear resistance and chemical medium resistance

Method used

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  • Double-component organic silicon polyurethane elastomer and preparation method thereof
  • Double-component organic silicon polyurethane elastomer and preparation method thereof
  • Double-component organic silicon polyurethane elastomer and preparation method thereof

Examples

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Effect test

preparation example Construction

[0021] A method for preparing a two-component silicone polyurethane elastomer, comprising the following steps:

[0022] 1) Preparation of component A: heat up polyol to 100-120°C for 2-4 hours in vacuum dehydration, conduct preliminary prepolymerization reaction with diisocyanate at 60-90°C for 2-5 hours, then add siloxane containing active hydrogen Further react at 60-90°C for 0.5-3h, add plasticizer at any time during the reaction process or after the end of the reaction, and pack after the end of the reaction;

[0023] 2) Preparation of component B: Disperse the polyol, reinforcing agent, inorganic filler, pigment, additive and plasticizer evenly with a high-speed disperser, then put it into the reaction kettle, stir and vacuumize and dehydrate at 100-120°C for 2- 4h, pack after finishing;

[0024] 3) Mix component A and component B according to the mass ratio of isocyanate: hydroxyl = 1:1.05-1.2, stir and polymerize and solidify to obtain a two-component silicone polyuret...

Embodiment 1

[0028] The formula composition of group A is as follows:

[0029]

[0030] The formula composition of component B is as follows:

[0031]

[0032] The two-component silicone polyurethane elastomer is composed of component A and component B according to the mass ratio of isocyanate and hydroxyl at 1:1.05.

Embodiment 2

[0034] The formula composition of group A is as follows:

[0035]

[0036] The formula composition of component B is as follows:

[0037]

[0038] The two-component silicone polyurethane elastomer is composed of component A and component B according to the mass ratio of isocyanate and hydroxyl at 1:1.1.

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Abstract

The invention discloses a double-component organic silicon polyurethane elastomer. The double-component organic silicon polyurethane elastomer consists of a component A and a component B, wherein the mass ratio of isothiocyano in the component A to hydroxyl in the component B is 1:(1.05-1.2); the component A is prepared by reacting the following raw materials in part by mass: 10 to 30 parts of polyisocyanate, 30 to 80 parts of polyalcohol, 0.1 to 10 parts of active hydrogen-containing siloxane and 0 to 10 parts of plasticizing agent; and the component B consists of the following raw materialsin part by mass: 10 to 50 parts of polyalcohol, 1 to 10 parts of reinforcing agent, 20 to 60 parts of inorganic filler, 3 to 10 parts of pigment, 0.1 to 10 parts of aid and 5 to 20 parts of plasticizing agent. The double-component organic silicon polyurethane elastomer has high elasticity, hardness, solvent resistance, wear resistance, flexure resistance, high and low temperature resistance, ultraviolet resistance and oxidative degradation resistance, low surface energy and high hydrophobicity, and can meet the long-term using requirement of the sport field.

Description

technical field [0001] The invention relates to a two-component silicone polyurethane elastomer and a preparation method thereof. Background technique [0002] Polyurethane elastomers are formed by the reaction of oligomer polyols, polyisocyanates and small molecule chain extenders. Oligomer polyols provide soft segments, and polyisocyanates provide hard segments. This combination of soft and hard structures makes polyurethane It has both high elasticity and high hardness. Polyurethane elastomers also have good solvent resistance, abrasion resistance and flex resistance. Polyurethane elastomers can be divided into polyester type and polyether type according to different oligomer polyols. Under outdoor exposure conditions, the aging resistance and hydrolysis resistance of these two types of polyurethane elastomers are relatively poor. At the same time, polyurethane elastomer is used as sports field pavement material as a high-frequency material. Its surface has poor stain r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/61C08G18/48C08G18/42C08G18/32C08G18/10C08K13/02
Inventor 梁亚平陈思猛何军
Owner GUANGDONG BOSHENG NEW MATERIAL TECH CO LTD
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