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Adhesive for quickly mutually sticking vulcanized silicone rubbers and preparation method of adhesive

A vulcanized silicone rubber and adhesive technology, applied in the direction of adhesives, non-polymer organic compound adhesives, polymer adhesive additives, etc., can solve the problem that instant curing adhesives cannot be used for effective bonding, and meet the requirements of in-situ molding Adhesive process needs, simple preparation method, fast curing effect

Inactive Publication Date: 2013-09-04
浙江凌志新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As mentioned earlier, due to the low surface energy of silicone rubber, commercially available instant curing adhesives cannot be used for effective bonding between vulcanized silicone rubber and vulcanized silicone rubber, and between vulcanized silicone rubber and other synthetic materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0034] The adhesive preparation method that vulcanized silicone rubber sticks to each other quickly comprises the steps:

[0035] 1) 100 parts by weight of ethyl α-cyanoacrylate, 3~12 parts by weight of thickener, 1.0 × 10 -3 ~5.0×10 -1 The stabilizer of weight part, the plasticizer of 3.0~30.0 weight part, 1.0 * 10 -2 Add ~2.0 parts by weight of adhesion promoter into an anhydrous and oxygen-free reaction kettle, under the protection of dry nitrogen, mix and stir at 40~80°C for 0.5~4 hours and then cool to room temperature;

[0036] 2) After stopping the feeding of dry nitrogen, feed dry sulfur dioxide gas at room temperature and stir for 0.5~2 hours, then put the materials in the reaction kettle into a closed container to obtain an adhesive that vulcanized silicone rubber can stick to each other quickly.

[0037] 2) After stopping the feeding of dry nitrogen, feed dry sulfur dioxide gas at room temperature and stir for 0.5~2 hours, then put the materials in the reaction ke...

Embodiment 1

[0040] In an anhydrous and oxygen-free reaction kettle, feed dry high-purity nitrogen, and add 100 parts by weight of α-ethyl cyanoacrylate, 3 parts by weight of polymethyl methacrylate, and 0.002 parts by weight of p-benzene Diphenol, 30 parts by weight of tricresyl phosphate, and 0.01 part by weight of γ-methacryloxypropyltrimethoxysilane. After the addition, the temperature was raised to 40° C. and cooled to room temperature after 4 hours. After stopping the feeding of dry nitrogen, feed dry sulfur dioxide gas at room temperature and stir for 2 hours, then put the materials in the reaction kettle into a closed container to obtain an adhesive for vulcanized silicone rubber to quickly stick to each other.

[0041] Using molded high-temperature vulcanized silicone rubber as the adhered material, the prepared adhesive is evenly coated on the surface of a silicone rubber test piece, and another piece of silicone rubber test piece is superimposed on the silicone rubber test piece...

Embodiment 2

[0043] In an anhydrous and oxygen-free reaction kettle, feed dry high-purity nitrogen, and add 100 parts by weight of ethyl α-cyanoacrylate, 7 parts by weight of poly-n-butyl methacrylate, 0.1 parts by weight of Diphosphorus oxide, 15 parts by weight of dibutyl phthalate, and 0.1 part by weight of γ-methacryloxypropyltriethoxysilane. After the addition was complete, the temperature was raised to 60° C. and cooled to room temperature after 2 hours. After stopping the feeding of dry nitrogen, feed dry sulfur dioxide gas at room temperature and stir for 1 hour, then put the materials in the reaction kettle into a closed container to obtain a vulcanized silicone rubber adhesive that sticks quickly to each other.

[0044] Using molded high-temperature vulcanized silicone rubber as the adhered material, the prepared adhesive is evenly coated on the surface of a silicone rubber test piece, and another piece of silicone rubber test piece is superimposed on the silicone rubber test piece...

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Abstract

The invention discloses an adhesive for quickly mutually sticking vulcanized silicone rubbers and a preparation method of the adhesive. The preparation method of the adhesive comprises the following steps of: adding alpha- ethyl cyanoacrylate, a thickener, a stabilizer, a plasticizer and a sticking promoter to a water-free oxygen-free reactor; mixing for 0.5 hour-4 hours at 40 DEG C-80 DEG C under the protection of a dry nitrogen gas atmosphere; cooling to room temperature and finally introducing dry sulfur dioxide gas and stirring for 0.5 hour-2 hours. On one hand, the adhesive provided by the invention can overcome the defect that the common rapid curing adhesive has poor adhesion with the vulcanized silicone rubber; on the other hand, the adhesive can overcome the defects that the room-temperature vulcanized silicone rubber (RTV) is long in curing period and low in production efficiency when used for adhering the vulcanized silicone rubber. The adhesive disclosed by the invention has the advantages of high curing speed, short curing period and high adhering strength for the vulcanized silicone rubber, and can be used for realizing in-situ forming of vulcanized silicone rubber products.

Description

technical field [0001] The invention relates to the field of fine chemical industry, in particular to an adhesive for rapid mutual adhesion of vulcanized silicone rubber and a preparation method thereof. Background technique [0002] Silicone rubber is the category with the largest output and the most varieties and grades among silicone products. According to different vulcanization methods, silicone rubber is divided into three categories: addition vulcanization, condensation vulcanization and peroxide-induced vulcanization. The vulcanized silicone rubber has excellent high and low temperature resistance, ultraviolet radiation resistance, weather resistance and suitable mechanical properties, and is widely used in many fields such as building sealing, electrical and electronic insulation protection, national defense and military industry, aerospace and so on. With the sharp increase in global oil prices, the price of synthetic rubber prepared from petrochemical products co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J4/02C09J11/06C09J11/08
Inventor 陈世龙高传花张春晖张宝华张利安柳时允
Owner 浙江凌志新材料有限公司
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