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A kind of epoxy resin cement for building joints and preparation method thereof

A technology of epoxy resin cement and epoxy resin, which is applied in the field of caulking cement, can solve the problems of insufficient mechanical properties of caulking glue, cumbersome preparation process of caulking glue, and short service life, so as to achieve good deformability and improve The effect of strength and good elongation at break

Active Publication Date: 2021-09-21
上海固瑞泰复合材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of epoxy resin cement and preparation method thereof for construction joint filling, to overcome the following technical problems in the prior art: (1) joint sealing glue mechanical property is not strong enough, property is brittle, and service life is not long (2) The preparation process of gap filler is loaded down with trivial details

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0065] A preparation method of epoxy resin cement for building joints, comprising the steps of:

[0066] Step S1, drop methyl hexahydrophthalic anhydride and 2,4,6-tris(dimethylaminomethyl)phenol into the bisphenol A type 128 epoxy resin, stir for 20 minutes and put it in a vacuum oven at 60°C for defoaming , take it out after finding that there is no obvious bubble overflow in the mixed liquid;

[0067] Wherein, the mass ratio of bisphenol A type 128 epoxy resin, methyl hexahydrophthalic anhydride and 2,4,6-tris(dimethylaminomethyl)phenol is 10:0.3-0.4:0.1-0.15;

[0068] Step S2, adding polyimide resin therein, stirring for 15-18 minutes, then adding carboxy-terminated nitrile rubber, stirring for 15-18 minutes to obtain the first mixture;

[0069] Step S3, after uniformly mixing the modified epoxy resin and the coupling agent, adding modified carbon nanotubes and fillers, and ultrasonically dispersing to obtain a second mixture;

[0070] Step S4, thoroughly mix the first m...

Embodiment 1

[0075] An epoxy resin mastic for building joints, comprising component A and component B, the component A is made of the following main parts by weight of raw materials: 45 parts of bisphenol A type 128 epoxy resin, modified epoxy resin 15 parts, 10 parts of carboxy-terminated nitrile rubber, 10 parts of polyimide resin, 8 parts of modified carbon nanotubes, 12 parts of filler, 1 part of KH550 silane coupling agent;

[0076] The component B includes low temperature curing agent, polyamide curing agent, phenalkamine curing agent, dibutyl phthalate, low temperature curing agent, polyamide curing agent, phenalkamine curing agent and dibutyl phthalate The mass ratio is 10:2:5:0.5;

[0077] The mass proportioning of described component A and component B is 10:2;

[0078] The filler is formed by compounding talc powder, mica powder and carbon black according to the mass ratio of 10:6:2;

Embodiment 2

[0080] An epoxy resin mastic for building joints, comprising component A and component B, the component A is made of the following main parts by weight: 50 parts of bisphenol A type 128 epoxy resin, modified epoxy resin 18 parts, 12 parts of carboxy-terminated nitrile rubber, 13 parts of polyimide resin, 9 parts of modified carbon nanotubes, 14 parts of filler, 1.5 parts of KH560 silane coupling agent;

[0081] The component B includes low temperature curing agent, polyamide curing agent, phenalkamine curing agent, dibutyl phthalate, low temperature curing agent, polyamide curing agent, phenalkamine curing agent and dibutyl phthalate The mass ratio is 10:2.5:6:0.8;

[0082] The mass proportioning of described component A and component B is 10:2.5;

[0083] The filler is formed by compounding talcum powder, mica powder and carbon black according to the mass ratio of 10:7:3;

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Abstract

The invention discloses an epoxy resin mastic for building joints, which comprises component A and component B. The component A is made of the following raw materials in main parts by weight: 45-55 parts of bisphenol A type 128 epoxy resin 15-20 parts of modified epoxy resin, 10-15 parts of carboxy-terminated nitrile rubber, 10-15 parts of polyimide resin, 8-11 parts of modified carbon nanotubes, 12-16 parts of filler, coupling agent 1-2 parts; the component B includes low-temperature curing agent, polyamide curing agent, phenalkamine curing agent, dibutyl phthalate; the mass ratio of component A to component B is 10:2 -3; The present invention also discloses a preparation method of the epoxy resin cement. In the present invention, through the addition of modified epoxy resin, carboxyl-terminated nitrile rubber and polyimide resin, and the combined use of modified carbon nanotubes, the obtained cement has strong mechanical properties, high toughness, excellent comprehensive performance, and a preparation process Simple and easy to produce.

Description

technical field [0001] The invention belongs to the technical field of joint filling cement, and in particular relates to an epoxy resin cement for building joint filling and a preparation method thereof. Background technique [0002] Tile and floor tile grout is a high-quality, environmentally friendly polymer cement-based composite bonding material. It is a powdery bonding material made of high-quality quartz sand and cement as aggregates, high-molecular polymer rubber powder and various additives mixed by a mixer. It is mainly used for various glazed tiles, marble, Used for caulking of bricks such as granite, the width and thickness of the caulking can be selected by the user. [0003] The use of ceramic tile floor tile grout to caulk can ensure that the caulked road has no cracks, and has good anti-seepage performance, which can prevent moisture and rainwater from penetrating into the wall, especially in winter, the water that seeps into the seam The icing expands, cau...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L13/00C08L79/08C08K13/06C08K3/34C08K3/04C08G59/14C08G59/60
CPCC08G59/14C08G59/60C08L63/00C08L2205/025C08L2205/035C08L13/00C08L79/08C08K13/06C08K3/041C08K3/34C08K3/04
Inventor 不公告发明人
Owner 上海固瑞泰复合材料科技有限公司
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