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A kind of epoxy sealant and preparation method thereof

A technology of epoxy caulking agent and caulking agent, which is applied in the field of architectural decoration and caulking agent, and can solve the problems of water resistance, dirt resistance, easy falling off and cracking, poor adhesion, etc.

Active Publication Date: 2021-01-15
HUNAN KOSEN NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the problems existing in the prior art, the object of the present invention is to provide an epoxy caulking agent and its preparation method, by selecting raw materials such as epoxy resin polymers, nano-inorganic fillers and modified amine curing agents. The gap filler products made by combining the three-dimensional network structure cross-linked by epoxy polymer materials and the excellent aging resistance of nano-inorganic materials, as well as the linear expansion coefficient close to stone boards solve the problems of existing gap fillers. Poor adhesion, not water-resistant and dirt-resistant, easy to fall off and crack, color change, etc.

Method used

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  • A kind of epoxy sealant and preparation method thereof
  • A kind of epoxy sealant and preparation method thereof
  • A kind of epoxy sealant and preparation method thereof

Examples

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Effect test

preparation example 1

[0081] 2 parts by weight of polyhexamethylene biguanide hydrochloride with a viscosity average molecular weight of 800 (Shanghai Shande Industrial Co., Ltd., PHMB) was dissolved in 5.5 parts by weight of tetrahydrofuran at 40° C. to obtain a guanidine salt solution. 2.5 parts by weight of γ-glycidoxypropyltrimethoxysilane was dissolved in 3 parts by weight of tetrahydrofuran to obtain a silane solution. Add the two solutions into the reactor for mixing, then heat the mixture to 76°C, and stir for 3 hours; after the reaction, remove the solvent in the reaction mixture under reduced pressure to obtain liquid The silane coupling agent product, the viscosity (25 ℃, cps) is 1570.

Embodiment 1

[0083] A kind of epoxy caulking agent, this epoxy caulking agent comprises A component and B component, and wherein A component comprises: 128M type waterborne epoxy resin (Guodu Chemical Industry (Kunshan) Co., Ltd.) 35 parts by weight, nano sulfuric acid 10 parts by weight of barium, 8 parts by weight of nano silicon dioxide, 75 parts by weight of calcined glass microspheres, 6 parts by weight of ethylene glycol diglycidyl ether, 6 parts by weight of hollow glass microspheres; 2 parts by weight of carboxyl liquid nitrile rubber, UV -26 (BASF) 0.5 parts by weight, 1076 (BASF) 0.5 parts by weight, 2 parts by weight of a mixture of hydrophilic fumed silica and hydrophobic fumed silica; wherein: the glass microspheres are attached with inorganic pigments, glass microspheres The diameter of the beads is 200 mesh, and the specific gravity of the hollow glass microspheres is between 0.15-0.3.

[0084]Component B includes: D-400 (Hunsman) 60 parts by weight, 650 polyamide curing age...

Embodiment 2

[0086] A preparation method of epoxy sealant, the method comprises the following steps:

[0087] (1) Preparation of component A: In the reaction kettle, add 40g 128M type water-based epoxy resin (Guodu Chemical Industry), 6g butyl glycidyl ether, 4g carboxyl liquid NBR, 1g UV-26, 1g 1076, and stir Uniformly, then add the mixture of 4g hydrophilic fumed silica and hydrophobic fumed silica, 24g nano-titanium dioxide, 120g calcined glass microspheres, stir again evenly, then add 6g hollow glass microspheres, continuously stir to obtain A Component;

[0088] (2) Preparation of component B: Mix 24g of bisphenol A epoxy resin (NPEL 127 from Nanya Company, viscosity (cps / 25°C) in the range of >6000 to <11000) and 20g of benzyl alcohol to obtain bisphenol A A mixture of type epoxy resin and benzyl alcohol; in the reactor, add 20g ethylene glycol diglycidyl ether and 80g D-230 (Hunsman), heat up to 55°C, react for a period of time, then add 40g 650 polyamide Curing agent, 40g diethyl...

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Abstract

The invention provides an epoxy joint mixture and a preparation method thereof. The problems that an existing joint filling material is poor in caking property, not water-resistant and dirt-resistantand easy to fall and crack, changes colors and the like are solved by selecting an epoxy joint mixture product prepared from raw materials such as an epoxy resin high molecular polymer, nano inorganicfiller and a modified amine curing agent by integrating an epoxy macromolecular material crosslinked three-dimensional netty structure and factors such as excellent aging resistance of the nano inorganic material, linear expansion coefficient close to a stone panel and the like. The prepared epoxy joint mixture is a joint mixture product which has integrated functions of filling joints, bonding,beautifying the joints and the like. The product has the characteristics of being good in water resistance and dirt resistance, high in bonding strength, various in color, low in cure shrinkage rate,small in influence by cold shrinkage and thermal expansion and good in antiageing performance.

Description

technical field [0001] The invention relates to a caulking agent, in particular to an epoxy caulking agent and a preparation method thereof, belonging to the field of building decoration industry. Background technique [0002] Ceramic tiles, artificial stone, marble, mosaic and other stone panels are widely used in the floor and wall decoration of houses. The general construction method is to use cement mortar, dry hanging glue and other bonding materials, and paste stone plates such as tiles and mosaics on the ground and walls. There will be a certain gap when paving, and then fill the gap with caulking agent. There are many kinds of joint filler materials, with different advantages and disadvantages. They are mainly coagulation materials prepared from cement, sandstone, inorganic fillers, polymer emulsions, and dispersible rubber powder. The raw materials of this type of caulking agent are easy to obtain, poor in water and stain resistance, high in curing shrinkage, easy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J163/00C09J11/04
CPCC08K2003/2227C08K2003/2241C08K2003/3045C08K2201/011C08K2201/014C08L2201/08C09J11/04C09J163/00C08L13/00C08K7/28C08K3/30C08K3/36C08K3/22C08K3/346
Inventor 郑保昌余志威钟雪琴欧阳光华
Owner HUNAN KOSEN NEW MATERIAL
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