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A kind of polysilicone resin and its preparation method and application

A technology of polysilicon and resin, which is applied in the field of silicone sealant primer and its preparation, can solve the problems of poor water resistance and adhesion of sealant, achieve the effects of improving adhesion, simple preparation method, and reducing construction time

Active Publication Date: 2021-07-16
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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  • A kind of polysilicone resin and its preparation method and application
  • A kind of polysilicone resin and its preparation method and application
  • A kind of polysilicone resin and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A silicone sealed adhesive coating, consisting of a weight of the following weight:

[0043]

[0044] The preparation method of the polysilicon resin is as follows:

[0045] 1) 220 parts of methyl triisopropoxysilane, 150 parts of toluene were stirred for 30 min, and 108 parts of mass fraction of 1% hydrochloric acid was added, and after stirring for 40min, it was allowed to stand, and the acid aquifer was separated, washed into neutral. The toluene was distilled off, and the average moles of mass was 12,000, and the Si-OH base mass fraction was 1.2% polysilicon resin intermediate;

[0046] 2) 210 parts of the polysilicon resin intermediate, 140 parts of 25 ° C having an end dihydroxy polyimethylasilane, 190 parts of methyltrimethoxysilane mixed, heated to 55 ° C, stirred for 60min, cooled to Room temperature;

[0047] 3) 60 parts of isobutylamine, 24 parts of formic acid, stirred to 75 ° C, reaction for 150 min, and the Si-OH group substantially disappeared, and the unre...

Embodiment 2

[0052] A silicone sealing adhesive coating liquid, which is substantially identical to Example 1, and the difference is only that the coupling agent is replaced with a 1,3,5-trim (trimethoxiloxy) polyisocyanate.

Embodiment 3

[0054] A silicone sealing adhesive coating liquid, which is substantially identical to Example 1, and the difference is only that the silicone sealed adhesive coating consists of a weight of the following weight:

[0055]

[0056]

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Abstract

The invention provides a polysilicone resin and its preparation method and application, and relates to the technical field of building sealing. The polysilicone resin of the present invention includes the following raw materials in parts by weight: 200-220 parts of polysilicone resin intermediate, 130-150 parts of polydimethylsilane terminated with dihydroxyl, 190-200 parts of methyltrimethoxysilane, 21 parts of formic acid ~24 parts, 60~65 parts of isobutylamine; Among them, the polysilicone resin intermediate is prepared from the following raw materials in parts by weight: 210~230 parts of methyltriisopropoxysilane, 140~160 parts of toluene, inorganic acid aqueous solution 100-110 copies. The silicone sealant primer of the present invention comprises the following raw materials in parts by weight: 15-25 parts of polysilicone resin, 7.5-15 parts of methyltrimethoxysilane hydrolyzate, 5-10 parts of silane coupling agent, tin Catalyst 0.05-0.2 parts. The silicone sealant primer of the present invention is suitable for concrete joints and has excellent applicability. After being treated with the primer of the present invention, it can not only significantly improve the adhesion of the silicone sealant to the concrete substrate, It can also significantly improve the adhesion of silicone sealants after soaking in water.

Description

Technical field [0001] The present invention relates to the field of building sealing technologies, and more particularly to a silicone sealed rubber bottom coating suitable for concrete seams and a preparation method thereof. Background technique [0002] When constructing roads, bridges, aircraft runways, telescopic seams are often reserved to avoid pavement cracks due to thermal expansion. However, the expansion seam is easy to seepage and accumulate, and the seepage will cause the road to soft and sink; the accumulation of foreign matter limits the telescopic movement of the seam, which will bring a very harm to the use of buildings. Therefore, it is necessary to fill in the sealing material in the seam, which prevents the penetration of water from the internal stress of the concrete, and the accumulation of foreign matter can be prevented, extend the service life of the road, bridge, and aircraft runway. Silicone sealant has good ultraviolet capacity, displacement capability...

Claims

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Application Information

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Patent Type & Authority Patents(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