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Organic silica gel adhesive

A silicone adhesive, an organic technology, applied in the direction of adhesives, polymer adhesive additives, film/sheet adhesives, etc., to achieve environmental governance and protection, improve flexibility, improve water resistance and heat and humidity resistance performance Effect

Active Publication Date: 2019-04-16
TONSAN ADHESIVES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the inventors found that adding rubber such as waste rubber into the silicone adhesive as a filler, compared with the silicone adhesive using conventional fillers, not only will not significantly increase the hardness of the colloid, but also its performance retention rate of 1000h resistance to double 85 damp heat aging Greatly improved, more than 70%, while also improving its tensile elongation at break, thus solving the current technical problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-17 and comparative example 1-3

[0051] The raw materials and consumption involved in each embodiment and comparative example are as follows:

[0052] Polysiloxane:

[0053] A1 20000mPa.s hydroxyl-terminated polydimethylsiloxane (Xin'an Chemical)

[0054] A2 80000mPa.s hydroxyl-terminated polydimethylsiloxane (Xin'an Chemical)

Embodiment 1

[0055] A3 50000mPa.s Vinyldimethoxysilane-terminated α, ω-dihydroxypolydimethylsiloxane (prepared according to Example 1 of the Chinese patent application 201410155699.9 specification)

[0056] A4 1000mPa.s hydroxyl-terminated polydimethylsiloxane (Dow Silicone (Zhangjiagang) Co., Ltd.)

[0057] A5 hydroxyl MQ resin YDSR1002 (Shanghai Yandi New Material Technology Co., Ltd.)

[0058] filler

[0059] B1 Calcium Carbonate (Guangxi Huana New Material Technology Co., Ltd., CCS-18)

[0060] B2 Calcium Carbonate (Zhejiang Tianshi Nano Technology Co., Ltd., TN-M3)

[0061] B3 microsilica powder (Guangdong Yufeng Powder Material Co., Ltd.)

[0062] B4 Aluminum Hydroxide (Foshan Vikede Chemical Materials Co., Ltd., FA-50K)

[0063] B5 Alumina (Foshan Vikede Chemical Materials Co., Ltd., AR-30)

[0064] B6 80 mesh recycled waste tire rubber powder (natural rubber as the main component)

[0065] B7 600 mesh tire rubber powder (styrene butadiene rubber)

[0066] B8 200 mesh waste h...

Embodiment 2-17 and comparative example 1-3

[0085] According to the similar operation described in Example 1, a silicone adhesive was prepared according to the formula shown in Table 1 below. For the addition of the silane coupling agent, the timing of adding the two components of the silane coupling agent C2 and C3 is consistent with that of the silane coupling agent C1.

[0086]

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PUM

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Abstract

The present invention relates to an organic silica gel adhesive, which comprises polysiloxane having a hydroxyl group and / or a hydrolyzable group bonded to a silicon atom, a catalyst, a cross-linkingagent and a filler, wherein the filler at least contains a rubber filler. According to the present invention, the organic silica gel adhesive has advantages of reduced cost, reduced hardness and improved moisture heat aging resistance, and maintains the original performances of the adhesive.

Description

technical field [0001] The invention relates to the field of organosilicon polymers, in particular to an organosilicon adhesive. Background technique [0002] Room temperature vulcanized silicone adhesives have been widely used in construction, electronics, industry, automobiles, and new energy fields due to their excellent operability, temperature resistance and weather resistance. However, silicone adhesives often need to add various fillers to meet certain application requirements, such as tensile strength, moisture and heat aging resistance, etc. In addition, since silicone adhesives are a relatively mature technology, the competition is fierce and has entered a fierce stage, and the market has extremely high cost requirements for silicone adhesives. Therefore, in order to reduce the cost of silicone adhesives, the most commonly used methods include increasing the amount of filler or adding other cheap solvent oils such as white oil. Calcium carbonate, alumina, silicon...

Claims

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Application Information

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IPC IPC(8): C09J183/04C09J183/07C09J11/04C09J11/08
CPCC09J11/04C09J11/06C09J11/08C09J183/04C08L2205/035C08L2205/03C08L2205/025C08L2201/08C08K2003/265C08K2003/2227C08L19/003C08K13/02C08K3/26C08K3/22C08K3/34C08K3/36C08K3/38C08K2003/387C08L83/04C08G77/16C08L83/00C08L7/00C08K5/5435C08K5/57C09J7/30C09J7/10C09J2417/00C09J2483/00
Inventor 苏丹陈永全王瑶肖明
Owner TONSAN ADHESIVES INC
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