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High-hardness edge-sealing silane-modified polyether sealant and preparation method thereof

A technology of silane-modified polyether and edge silane, which is applied in the direction of polyether adhesives, chemical instruments and methods, adhesives, etc., can solve the problem of low hardness of rubber strips, achieve fast curing speed, increase hardness density, and hard surface smooth effect

Inactive Publication Date: 2019-08-30
广州和新实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the Chinese invention patent with the patent number CN201410839249.1 discloses an environmentally friendly mildew-resistant silane-modified polyether sealant, but this silane-modified polyether sealant has good elasticity, and the rubber strip is relatively soft and low in hardness.

Method used

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  • High-hardness edge-sealing silane-modified polyether sealant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In the embodiment of the present invention, a high-hardness edge-sealing silane-modified polyether sealant has a sealing hardness of 88-90 Shore A after being used and cured. The sealant includes the following raw materials in parts by weight: silane-modified polyether pre- Polymer: 15 parts, plasticizer: 13 parts; reinforcing powder: 57.5-66.5 parts; antioxidant: 0.5 parts; crosslinking agent: 1.5 parts; coupling agent: 0.6 parts; catalyst: 0.05 parts; High styrene resin: 4 parts.

[0024] The silane-modified polyether prepolymer is a siloxane-terminated modified polyether resin.

[0025] The plasticizer is one or more of diisodecyl phthalate (DIDP), diisononyl phthalate (DINP) and polyether polyol (PPG).

[0026] The reinforcing and increasing powder is one or more mixed powders of nanometer calcium carbonate, heavy calcium carbonate or titanium dioxide.

[0027] The described antioxidants are β-(3,5-di-tert-butyl-4-hydroxyphenyl) octadecyl propionate, β-(3,5-di-ter...

Embodiment 2

[0035] In the embodiment of the present invention, a high-hardness edge-sealing silane-modified polyether sealant has a sealing hardness of 88 Shore A, and the sealant includes the following raw materials in parts by weight: silane-modified polyether resin: 15 parts, ortho-phenyl Diisononyl dicarboxylate (DINP): 13 parts, nano calcium carbonate: 18 parts, heavy calcium carbonate: 48 parts, titanium dioxide: 1.5 parts, β-(3,5-di-tert-butyl-4-hydroxybenzene Base) stearyl propionate: 0.5 parts, vinyl trimethoxysilane: 1.5 parts, N-(β-aminoethyl)-γ-aminopropyl trimethoxysilane 0.6 parts, dilauric acid di Butyl tin: 0.05 parts, 4 parts of HS-85 high styrene resin.

[0036] Prepare as follows:

[0037] 1) Weigh the weight of each raw material according to the required ratio;

[0038] 2), the weighed diisononyl phthalate DINP plasticizer, nano calcium carbonate, ground calcium carbonate, titanium dioxide reinforcing powder, high styrene resin and β-(3,5 - Di-tert-butyl-4-hydroxyph...

Embodiment 3

[0041] A high-hardness edge-banding silane-modified polyether sealant. After curing, the sealing hardness reaches 90 Shore A. The sealant includes the following raw materials in parts by weight: silane-modified polyether resin: 15 parts, phthalic acid Diisononyl ester (DINP): 13 parts, nano calcium carbonate: 25 parts, heavy calcium carbonate: 40 parts, titanium dioxide: 1.5 parts, β-(3,5-di-tert-butyl-4-hydroxyphenyl) Stearyl propionate: 0.5 parts, vinyltrimethoxysilane: 1.5 parts, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane 0.6 parts, dibutyltin dilaurate: 0.05 parts, 4 parts of HS-85 high styrene resin.

[0042] Prepare as follows:

[0043] 1) Weigh the weight of each raw material according to the required ratio;

[0044]2) Mix the weighed reinforcing incremental powder nano-calcium carbonate, heavy calcium carbonate and titanium dioxide first, then put it into the oven, keep the temperature at 110-120°C and bake for 12 hours, so that the moisture content of the powder...

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Abstract

The invention discloses a high-hardness edge-sealing silane-modified polyether sealant. The high-hardness edge-sealing silane-modified polyether sealant is characterized by achieving sealing hardnessof 80 to 90 Shore A and comprising the following raw materials by weight: 15 to 30 parts of a silane-modified polyether prepolymer, 13 to 20 parts of a plasticizer, 40 to 70 parts of a reinforcing incremental powder, 0.1 to 2 parts of an antioxidant, 1 to 10 parts of a cross-linking agent, 0.1 to 2 parts of a coupling agent, 0.05 to 0.09 part of a catalyst and 1 to 10 parts of high styrene resin.According to the invention, the hardness density of a silane-modified polyether sealant is improved; meanwhile, a cured product is guaranteed to be insusceptible to cracking and powdering; due to enlarged hardness density of a sealant slurry, water impurity is better prevented from permeating into the sealant; the surface of the high-hardness edge-sealing silane-modified polyether sealant is hardand smooth and facilitates scrubbing, so a long-acting mildew-proof effect is achieved; and when in use, the high-hardness edge-sealing silane-modified polyether sealant has rapid curing speed and isspecifically applicable to sealing of the seal edge of the position of a hand basin in a kitchen and a bathroom.

Description

technical field [0001] The invention relates to the field of sealant materials, in particular to a high-hardness edge-sealing silane-modified polyether sealant and a preparation method thereof. Background technique [0002] Sealant is a kind of adhesive that is frequently used in decoration, such as kitchen and bathroom countertop installation, bathroom toilet, washbasin installation, shower room, bathroom cabinet installation, etc. It needs to be used. However, at present, most people habitually use silicone sealants for sealing and edge sealing. However, traditional silicone sealants have good elasticity, low hardness, and the surface is easy to absorb impurities and is not easy to scrub, which makes these edge sealing positions easy to grow mold. , affecting the beauty of the environment. Based on the above technical problems, a new type of kitchen and bathroom edge sealant is developed to meet market demand. For example, the Chinese invention patent whose patent number...

Claims

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Application Information

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IPC IPC(8): C09J171/00C09J125/10C09J11/06C09J11/04C09J11/08C09J4/06C09K3/10
CPCC08K2003/2241C08K2003/265C08K2201/011C08K2201/014C08L2205/025C08L2205/03C09J4/06C09J11/04C09J11/06C09J11/08C09J171/00C09K3/10C08L71/00C08L25/10C08K13/02C08K5/12C08K3/26C08K3/22C08K5/1345C08K5/526
Inventor 余杰明宋晓东
Owner 广州和新实业有限公司
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