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Silicon rubber follow-up treatment agent and preparation method thereof

A treatment agent and silicone rubber technology, which is applied in the field of silicone rubber adhesive treatment agent and its preparation, can solve the problems of difficult peeling, waste, damage to integrity, etc., and achieve the effect of easy rework and avoiding waste

Inactive Publication Date: 2011-09-14
GUANGDONG ZHICHENG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to be suitable for a wide range of applications, it is inevitable to carry out follow-up treatment between silicone rubbers, and a treatment agent is used for the follow-up treatment; at present, silicone rubber has good adhesion properties, but the peeling property is not good; especially in When a large number of small pieces are bonded to a larger silicone rubber, such as in the production of mobile phone key parts, if one of the keys is wrongly bonded, it will be difficult to peel off, and strong peeling will damage the integrity, so it will be damaged in production. cause a lot of waste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A silicone rubber bonding agent; including: 10% polymer polyester polyol, 10% ethylene glycol, 30% diisocyanate, 50% butyl acetate;

[0031] The preparation method of above-mentioned a kind of silicone rubber following treatment agent; The preparation steps are as follows:

[0032] Step 1. Mix the above-mentioned high-molecular polyester polyol and ethylene glycol in proportion, and heat to 100° C. for dehydration treatment;

[0033] Step 2, add butyl acetate, and fully stir evenly;

[0034] Step 3, feed nitrogen, add diisocyanate to react for 2 hours;

[0035] Step 4, heating to 60°C, holding the temperature for 6 hours to prepare the finished product.

Embodiment 2

[0037] A silicone rubber bonding agent; including: 20% high molecular polyester polyol, 5% pentaerythritol, 35% diisocyanate, 40% ethyl acetate;

[0038] The preparation method of above-mentioned a kind of silicone rubber following treatment agent; The preparation steps are as follows:

[0039] Step 1, mixing the above-mentioned high-molecular polyester polyols and pentaerythritol in proportion, heating to 100°C for dehydration;

[0040] Step 2, add ethyl acetate, and fully stir evenly;

[0041] Step 3, feed nitrogen, add diisocyanate to react for 4 hours;

[0042] Step 4, heating to 70°C, holding the temperature for 5 hours to prepare the finished product.

Embodiment 3

[0044] A silicone rubber bonding agent; including: 70% polymer polyether polyol, 5% isopropylene glycol, 25% diisocyanate, 10% butyl acetate;

[0045] The preparation method of above-mentioned a kind of silicone rubber following treatment agent; The preparation steps are as follows:

[0046] Step 1. Mix the above-mentioned high molecular weight polyester polyol and isopropylene glycol in proportion, and heat to 100° C. for dehydration treatment;

[0047] Step 2, add butyl acetate, and fully stir evenly;

[0048] Step 3, feed nitrogen, add diisocyanate to react for 3 hours;

[0049] Step 4, heating to 80°C, holding the temperature for 3 hours to prepare the finished product.

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PUM

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Abstract

The invention relates to the technical field of silicon rubber treatment agents, in particular to a silicon rubber follow-up treatment agent and a preparation method thereof. The silicon rubber follow-up treatment agent is prepared from macromolecule polyester polyol or macromolecule polyester polyether, polyol, vulcabond and latent solvent and plays a role of bridge between bond and colloid. When error adhibiting occurs, reworking is easy, i.e. acetone is directly dropped to the bonding portion to make silicon rubber bonded together to separate from each other, and the silicon rubber can notbe damaged in the peel-off process. The invention avoids waste due to the defect of the prior art and accords with the European union ROHS standard.

Description

Technical field: [0001] The invention relates to the technical field of silicone rubber treatment agents, in particular to a silicone rubber adhesive treatment agent and a preparation method thereof. Background technique: [0002] Silicone rubber is a special synthetic elastomer formed by mixing linear polysiloxane with reinforcing filler and vulcanized under heat and pressure; it perfectly balances mechanical and chemical properties, and has many excellent qualities, such as: high and low temperature Stability, inertness (odorless and odorless), transparent, easy to color, wide hardness range, chemical resistance, weather resistance, sealing performance, electrical properties, etc., can meet the requirements of many demanding applications today, so it can be widely used in aviation and Aerospace, military industry, automobiles and motorcycles, cables, bridges, urban construction, rubber processing and other industrial fields. [0003] In order to be suitable for a wide ran...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04C08G18/66C09J5/02
Inventor 李志民
Owner GUANGDONG ZHICHENG CHEM
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