Silane modified acrylic resin, synthesis method and primer for silicone rubber
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An acrylic resin, silane modification technology, applied in the direction of coating, can solve the problems of long curing time, poor bonding performance, high curing temperature, reduce the stability of bonding and curing, improve processing production efficiency and bonding effect strong effect
Active Publication Date: 2022-04-01
SHENZHEN KANGLIBANG TECH
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[0006] In order to improve the poor bonding performance of the existing silicone rubber primer, the defects of high curing temperature and long curing time, the application provides a silane-modified acrylic resin, a synthesis method and a primer for silicone rubber
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preparation example 1-6
[0064] A kind of synthetic method of silane modified acrylic resin, the steps are as follows:
[0065] S1. Weigh (meth)acrylic acid alkyl ester monomers, hydroxy ester monomers, epoxy monomers, vinyl siloxane monomers, and crosslinking monomers in parts by weight shown in Table 1. body, solvent; and sequentially added to a four-necked flask equipped with a stirrer, a thermometer and a reflux device, stirred evenly, and heated to the temperature shown in Table 1; where the solvent was first added in an amount of 80%.
[0066] S2. take the initiator shown in table 1 by weight and mix with the remaining 20% solvent in S1 to obtain an initiator solution;
[0067] S3. adopt multiple dropping method to add initiator solution, first drip 50% initiator solution, and drop time is as shown in table 1 in drop time and reaction time;
[0068] S4. continue to drip the 30% initiator solution, and the dropping time is as shown in table 1 at the dropping time and the reaction time;
[006...
preparation example 7-12
[0075] The preparation method, reaction temperature and initiator solution dripping process of Preparation Examples 7-12 are the same as those of Preparation Example 2, the difference lies in the raw materials and contents of each component, as shown in Table 2.
[0076] Table 2 Preparation Example 7-12 each component composition and its dosage
[0077]
preparation example 13-18
[0079] The preparation method, reaction temperature and initiator solution dripping process of Preparation Examples 13-18 are the same as those of Preparation Example 2, the difference lies in the raw materials and contents of each component, as shown in Table 3.
[0080] Table 3 preparation example 13-18 each component composition and dosage thereof
[0081]
[0082]
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Abstract
The invention relates to the technical field of resin synthesis and application thereof, and particularly discloses silane modified acrylic resin, a synthesis method and a primer for silicone rubber. The primer for the silicon rubber is prepared by dispersing the silane modified acrylic resin and the silane coupling agent titanate into a solvent for the primer and reacting through a catalyst. The silane modified acrylic resin provided by the invention can be used for preparing a primer for silicone rubber, and has the advantages of good adhesion, film-forming property, heat resistance, water resistance, low surface drying temperature, short time and the like; the invention relates to silane modified acrylic resin, which is prepared by dispersing (methyl) acrylic acid alkyl ester monomers, hydroxyl ester monomers, epoxy group monomers, vinyl siloxane monomers and assistant crosslinking monomers in a solvent for resin and carrying out free radical polymerization under the catalysis of an initiator, the silane modified acrylic resin obtained by the invention has excellent cohesion performance and film-forming performance, and is suitable for preparing a silicone rubber prime coat adhesive.
Description
technical field [0001] The application relates to the technical field of resin synthesis and its application, more specifically, it relates to a silane-modified acrylic resin, a synthesis method and a primer for silicone rubber. Background technique [0002] Silicone rubber materials have great advantages as electronic packaging materials. It emits less heat during curing, requires relatively low curing temperature, basically does not shrink after curing, and can be used in a wide temperature range. [0003] Silicone rubber can be divided into addition-type silicone rubber and condensation-type silicone rubber according to the curing mechanism. Silicone rubber has outstanding advantages, especially its fast molding speed, high production efficiency, non-toxic, odorless, non-corrosive, chemically inert, small linear shrinkage, deep curing, and the curing speed can be controlled by temperature adjustment. , are widely used in electronics, automobiles, cultural relics, handicr...
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