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Poly-silicon resin as well as preparation method and application thereof

A resin and polysilicon technology, applied in the field of silicone sealant primer and its preparation, can solve the problems of poor water resistance and adhesion of the sealant, and achieve the effect of improving adhesion and excellent applicability

Active Publication Date: 2019-05-28
GUANGZHOU GLORYSTAR CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a polysilicone resin and its preparation method and application in view of the technical problem of poor water resistance and adhesion of the existing sealant

Method used

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  • Poly-silicon resin as well as preparation method and application thereof
  • Poly-silicon resin as well as preparation method and application thereof
  • Poly-silicon resin as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A silicone sealant primer, consisting of the following raw materials in parts by weight:

[0043]

[0044] The preparation method of described polysilicone resin is as follows:

[0045] 1) Stir 220 parts of methyltriisopropylsilane and 150 parts of toluene for 30 minutes, add 108 parts of hydrochloric acid with a mass fraction of 1% dropwise, continue stirring for 40 minutes, let stand, separate the acidic water layer, wash with water until neutral, and then Toluene was distilled off under reduced pressure to obtain a polysilicone resin intermediate with an average molar mass of 12000 and a Si-OH group mass fraction of 1.2%;

[0046] 2) Mix 210 parts of polysilicone resin intermediate, 140 parts of dihydroxypolydimethylsilane with a viscosity of 20 mPa·s at 25°C, and 190 parts of methyltrimethoxysilane, heat to 55°C, stir for 60 minutes, and cool to room temperature;

[0047] 3) Add 60 parts of isobutylamine and 24 parts of formic acid, stir and heat to 75°C, react...

Embodiment 2

[0052] A silicone sealant primer, which is basically the same as in Example 1, the only difference is that the coupling agent is replaced by 5 parts of 1,3,5-tris(trimethoxysilylpropyl) polyisocyanate.

Embodiment 3

[0054] A silicone sealant primer is basically the same as Example 1, the only difference being that the silicone sealant primer consists of the following raw materials in parts by weight:

[0055]

[0056]

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Abstract

The invention provides poly-silicon resin as well as a preparation method and application thereof, and relates to the technical field of building sealing. The poly-silicon resin is prepared from the following raw materials in parts by weight: 200 to 220 parts of poly-silicon resin intermediate products, 130 to 150 parts of dihydroxy polydimethyl silane, 190 to 200 parts of methyltrimethoxysilane,21 to 24 parts of methanoic acid and 60 to 65 parts of isobutylamine, wherein the poly-silicon resin intermediate products are prepared from the following raw materials in parts by weight: 210 to 230parts of methyl-triisopropoxy-silane, 140 to 160 parts of toluene and 100 to 110 parts of inorganic acid solution. The silicone sealant coating solution is prepared from the following raw materials inparts by weight: 15 to 25 parts of polysilane rubber, 7.5 to 15 parts of methyl trimethoxy silane hydrolysate, 5 to 10 parts of silane coupling agents and 0.05 to 0.2 part of tin catalysts. The silicone sealant coating solution is applicable to concrete joint seams, and has excellent adaptability. After the treatment by the bottom coating solution provided by the invention, the bonding performance of the silicone sealant on concrete substrates can be obviously improved; the bonding performance of the silicone sealant after the water soaking can also be obviously improved.

Description

technical field [0001] The invention relates to the technical field of building sealing, in particular to a silicone sealant primer suitable for concrete joints and a preparation method thereof. Background technique [0002] During the construction of roads, bridges, airstrips, etc., it is often necessary to reserve expansion joints to avoid pavement cracks due to thermal expansion and contraction. However, expansion joints are prone to water seepage and accumulation of foreign matter, and water seepage will cause the road surface to be soft and subsidence; the accumulation of foreign matter will limit the expansion and contraction of the joint, which will bring great harm to the use of the building. Therefore, it is necessary to fill the joints with sealing materials. On the premise of relieving the internal stress of the concrete, it can prevent the infiltration of water and the accumulation of foreign matter, and prolong the service life of roads, bridges, and airstrips. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/04C09J11/06
Inventor 黎耀钟何宗业胡新嵩曹荣权陈耀根
Owner GUANGZHOU GLORYSTAR CHEM
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