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Primer for improving binding force between silicone rubber and acrylic acid double sided adhesive tape and preparation method thereof

A technology of acrylic and silicone rubber, applied in the direction of non-polymer adhesive additives, adhesives, adhesive additives, etc., can solve problems such as inapplicability, complicated procedures, adhesion, etc., achieve convenient operation, reduce manual brushing, and improve production efficiency effect

Pending Publication Date: 2022-01-28
SICHUAN DONGFANG INSULATING MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing treatment agents are cumbersome in the treatment of silicone rubber, and there are still phenomena of adhesion and damage to the molecular structure of silicone rubber. There are certain hidden dangers in the durability and insulation of the treated silicone rubber.
In the prior art, CN105754501A discloses "a silica gel treatment method". This method solves the problem of adhesion on the surface of silicone rubber after treatment, but there are situations in which the surface structure of silicone rubber is destroyed. At the same time, the treatment process is cumbersome and needs to be washed off with alcohol For the release agent and dust on the surface of the silica gel, apply the treatment agent 1 to 2 times, and at the same time stand still for 5 to 10 minutes before pasting, it is impossible to carry out continuous large-scale silicone sheet coil processing
CN109321201A discloses "a silicone rubber treatment agent and its preparation method". The silicone rubber treated with the primer has a better bonding effect with polycarbonate materials, but it is not suitable for pasting acrylic double-sided adhesive tape. The commercially available treatment agent Adhesion is ubiquitous, and the processing procedures are complicated, so it is not suitable for large-scale continuous processing of silicone sheet and coil material compounded with acrylic double-sided adhesive tape to prepare silicone sheet tape

Method used

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  • Primer for improving binding force between silicone rubber and acrylic acid double sided adhesive tape and preparation method thereof
  • Primer for improving binding force between silicone rubber and acrylic acid double sided adhesive tape and preparation method thereof
  • Primer for improving binding force between silicone rubber and acrylic acid double sided adhesive tape and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A method for preparing a primer for improving the bonding force between silicone rubber and acrylic double-sided adhesive, the steps are: respectively inserting 20 parts by mass of silicone rubber, 10 parts by mass of methyl MQ silicone resin, and 60 parts by mass of toluene at room temperature In a reaction kettle with a condensing reflux device, heat up to 60°C, stir and dissolve for 1.5 hours, then add 10 parts by mass of acrylic modified silicone resin, 1.5 parts by mass of γ-methacryloxytrimethoxysilane, 0.5 parts by mass The catalyzer of 1 part continues to stir and keep warm for 1 hour, finally adds 200 parts by mass of toluene, 5 parts by mass of superfine silicon dioxide, and 0.5 parts by mass of anti-settling agent and mixes evenly to obtain an anti-sticking silica gel primer (i.e., to increase the amount of silicone rubber and acrylic acid) Primer for bonding between double-sided adhesive tape).

Embodiment 2

[0045] A preparation method of a primer for improving the bonding force between silicone rubber and acrylic double-sided adhesive tape, the steps are: 25 parts by mass of silicone rubber, 15 parts by mass of methyl MQ silicone resin, 80 parts by mass of ethyl acetate Put it into a reaction kettle with a condensation reflux device, raise the temperature to 70°C, stir and dissolve for 1.5 hours, then add 15 parts by mass of acrylic modified silicone resin, add 3 parts by mass of γ-(2,3-epoxypropyl) propane Trimethoxysilane, 0.8 parts by mass of the catalyst continued to stir and keep warm for 1 hour, and finally added 150 parts by mass of D30 solvent oil, 7 parts by mass of calcium carbonate powder, and 1 part by mass of anti-settling agent and mixed evenly to obtain an anti-sticking silica gel primer agent (that is, a primer that improves the bonding force between silicone rubber and acrylic double-sided adhesive tape).

Embodiment 3

[0047] A preparation method of a primer for improving the bonding force between silicone rubber and acrylic double-sided adhesive tape, the steps are: 20 parts by mass of silicone rubber, 20 parts by mass of methyl vinyl MQ silicone resin, 100 parts by mass of acetone Put it into a reaction kettle with a condensation reflux device, raise the temperature to 70°C, stir and dissolve for 1.5 hours, then add 20 parts by mass of γ-aminopropyltriethoxysilane acrylic modified silicone resin, add 3 parts by mass of silane coupling catalyzer of 1 mass part and continue to stir and keep warm for 1 hour, finally add 100 mass parts of 120# solvent naphtha, 10 mass parts of polyacrylamide powder, 1.5 mass parts of anti-settling agent and mix evenly to prepare the anti-sticking silica gel primer ( That is, a primer that improves the bonding force between silicone rubber and acrylic double-sided adhesive).

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Abstract

The invention discloses a primer for improving the binding force between silicone rubber and an acrylic acid double-sided adhesive tape and a preparation method thereof. The primer is characterized by being prepared from the following components in parts by mass: 150-300 parts of a solvent, 10-20 parts of acrylic acid modified silicon resin, 10-20 parts of silicon resin, 20-30 parts of silicon rubber, 1-5 parts of a silane coupling agent, 0.2-1 part of a catalyst, 5-15 parts of powder and 0.5-2 parts of an anti-settling agent; the preparation method comprises the following steps: putting the silicon rubber, the silicon resin and the solvent into a reaction kettle, heating to 50-80 DEG C, stirring and dissolving, adding the acrylic modified silicon resin, the silane coupling agent and the catalyst, stirring and preserving heat for 1-2 hours, adding the solvent, the powder and the anti-settling agent, and uniformly mixing to obtain the primer. The primer prepared by the method is used for large-scale continuous treatment of silicone rubber sheets, and various silicone rubber sheet adhesive tapes prepared by compounding acrylic acid double faced adhesive tapes are good in performance.

Description

technical field [0001] The invention belongs to the surface treatment technology of silicone rubber, and relates to a preparation method of a primer for improving the bonding force between silicone rubber and acrylic double-sided adhesive. The (prepared) primer of the present invention is especially suitable for the large-scale continuous surface treatment agent of silicone rubber coils to prepare silicone sheet tapes. Background technique [0002] Silicone rubber has excellent heat resistance, insulation and weather resistance, and can be used in an environment of -60°C to 250°C for a long time, and has a wide range of uses in various industries. However, due to the low surface energy of silicone rubber, it cannot be effectively pasted and fixed with other materials, which seriously limits the application of silicone rubber. In order to give full play to the performance advantages of silicone rubber, in the industry, the surface of silicone rubber is generally treated firs...

Claims

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Application Information

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IPC IPC(8): C09J183/04C09J183/05C09J183/07C09J11/04C09J11/06
CPCC09J183/04C09J11/04C09J11/06C08K2003/265C09J2483/003C08L83/04C08K5/5425C08K3/36C08K5/5419C08K3/26C08L33/26
Inventor 彭晓伟张晖刘洪乐朱东海马慰栖
Owner SICHUAN DONGFANG INSULATING MATERIAL
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