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Tackifier, self-adhesive two-component addition type organic silicon pouring sealant prepared from tackifier and preparation method of organic silicon pouring sealant

A technology of silicone potting glue and tackifier, applied in the direction of polymer adhesive additives, adhesives, adhesive additives, etc., can solve the problems of complex and cumbersome synthesis process of tackifier, human body and environment damage, etc., and achieve good Adhesiveness, improvement of safety, effect of improving waterproof level

Pending Publication Date: 2021-10-15
浙江励德有机硅材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of the prior art is that the synthesis process of the tackifier is complex and cumbersome, either using highly flammable liquids such as hydrogen-containing rings or toxic and flammable solvents such as toluene, or using unconventional raw materials. Cause certain harm to human body and environment

Method used

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  • Tackifier, self-adhesive two-component addition type organic silicon pouring sealant prepared from tackifier and preparation method of organic silicon pouring sealant
  • Tackifier, self-adhesive two-component addition type organic silicon pouring sealant prepared from tackifier and preparation method of organic silicon pouring sealant
  • Tackifier, self-adhesive two-component addition type organic silicon pouring sealant prepared from tackifier and preparation method of organic silicon pouring sealant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0045]The components and dosages of the tackifiers in Examples 1 to 4 are shown in Table 1. The dosages in Table 1 are the mole fractions of each raw material, and the platinum catalyst is used in an amount of 3 to 8 ppm of the mass of the hydrogen-containing silicone oil.

[0046] The preparation method of embodiment 1~4 tackifier comprises the following steps:

[0047] (1) Mix hydrogen-containing silicone oil and platinum catalyst evenly, and heat up to 60°C;

[0048] (2) Slowly add the bifunctional compound dropwise to the above mixture, and continue to insulate and mix for 1 hour after the dropwise addition, to obtain the first reaction product;

[0049] (3) Slowly add the unsaturated bond-containing alkoxysilane dropwise to the first reaction product, and continue to keep warm and mix for 1 hour after the dropwise addition to obtain the tackifier.

[0050] Table 1

[0051]

[0052]

Embodiment 1

[0054]

Embodiment 2

[0056]

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Abstract

The invention relates to a tackifier, a self-adhesive two-component addition type organic silicon pouring sealant prepared from the tackifier and a preparation method of the organic silicon pouring sealant, and belongs to the field of silicone rubber tackifiers. The tackifier provided by the invention is simple in synthesis process, does not use a high-toxicity and flammable solvent, forms effective connection between a pouring sealant main chain and a base material, further forms good adhesion, and does not cause thixotropy and hardness reduction after being used.

Description

technical field [0001] The invention relates to a tackifier, a self-adhesive two-component addition type silicone potting glue prepared therefrom and a preparation method thereof, belonging to the field of silicone rubber tackifiers. Background technique [0002] Silicone potting adhesives are divided into two types: condensation type and addition type, generally composed of two components. Condensation-type potting adhesives are cured at room temperature, and the mixing ratio of components A and B is usually 10:1. Volatile low-molecular substances will be produced during the curing process, resulting in obvious shrinkage after curing, but condensation-type potting adhesives It can form good adhesion to components and potting cavity. Addition type potting glue is through the addition reaction of vinyl and silicon hydrogen under the action of platinum catalyst, no small molecules are released during the curing process, the shrinkage rate is low, and rapid and deep curing can...

Claims

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Application Information

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IPC IPC(8): C08G77/38C09J11/08C09J183/07C09J183/04
CPCC08G77/38C09J11/08C09J183/04C08L2205/025C08L83/04C08L83/06
Inventor 赵轶王轲王振波吴克陈阳金红君
Owner 浙江励德有机硅材料有限公司