Silane-blocked polyether sealant and preparation method and application thereof

A technology of silane-terminated polyether and sealant, which is applied in the field of sealant, can solve the problems of long overall process time and insufficient elongation performance of sealant, and achieve excellent adhesion, moderate tensile strength and good elastic recovery rate effect

Inactive Publication Date: 2019-11-05
ZHEJIANG HUANGMA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] CN100509955C discloses a one-component silane-modified polyether sealant and its preparation method, which uses a phthalate plasticizer, which limits the place of use, and the sealant is insufficient in elongation performance; CN103333653A Disclosed is a flame-retardant one-component silane-modified polyether sealant and a preparation method thereof, which improves the flame-retardant performance of the sealant;
[0005] CN108102592A discloses a new solvent-free quick-drying nail-free glue and its preparation method, which provides a new idea for the preparation of environmentally friendly and healthy sealants, but the overall process takes a long time; CN108546537A discloses a low-cost environmentally friendly nail-free glue And preparation method thereof, utilizes castor oil as plasticizer to improve heat resistance of sealant

Method used

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  • Silane-blocked polyether sealant and preparation method and application thereof
  • Silane-blocked polyether sealant and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A silane-terminated polyether sealant consists of the following components by mass percentage:

[0025] Silane-terminated polyether S303H—20%, plasticizer epoxyacetyl ricinoleate—20%, light stabilizer B75—1%, polyamide wax—1.6%, solid powder GCC—39%, PCC— 13% and fumed silica—2%, dewatering agent diisobutyl ether group bis(trimethoxy)silane—1.6%, coupling agent N-2-(aminoethyl)-3-aminopropyltrimethyl Oxysilane (KH-792)—1.6%, catalyst U-220H—0.2%.

[0026] A kind of its preparation method of silane-terminated polyether sealant, comprises the following steps:

[0027] (1) Add silane-terminated polyether, plasticizer and UV absorber to the double planetary dynamic mixer under nitrogen condition, and stir for 20-30min under vacuum condition (≤30mbar);

[0028] (2) Add auxiliary additives and solid powder under nitrogen condition, heat up to 90-110°C and vacuumize (≤30mbar) and stir for 1.5-2.0h, cool down to 45-55°C and add dewatering agent and distillate under nitrogen c...

Embodiment 2

[0032] A silane-terminated polyether sealant for prefabricated buildings, consisting of the following components by mass percentage:

[0033] Silane-terminated polyether HMS-1303—20%, plasticizer epoxyacetyl ricinoleate—20%, light stabilizer B75—1%, polyamide wax—1.6%, solid powder GCC—39%, PCC—13% and fumed silica—2%, water removal agent diisobutyl ether group bis(trimethoxy)silane—1.6%, coupling agent N-2-(aminoethyl)-3-aminopropyl Trimethoxysilane (KH-792)—1.6%, catalyst U-220H—0.2%.

[0034] The preparation method is the same as in Example 1.

[0035] The test results are shown in Table 1.

Embodiment 3

[0037] A silane-terminated polyether sealant consists of the following components by mass percentage:

[0038] Silane-terminated polyether HMS-1303—20%, plasticizer PPG2000—20%, light stabilizer B75—1%, organically modified montmorillonite—1.6%, solid powder GCC—39%, PCC—13% And fumed silica—2%, dewatering agent diisobutyl ether base bis(trimethoxy)silane—1.6%, coupling agent isopropyl tri(dodecylbenzenesulfonyl) titanate—1.6 %, catalyst KAT226—0.2%.

[0039] The preparation method is the same as in Example 1.

[0040] The test results are shown in Table 1.

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Abstract

The invention belongs to the technical field of sealants, and particularly relates to a silane-blocked polyether sealant and a preparation method and application thereof. The sealant is prepared from,by mass, 10-35% of silane-blocked polyether, 10-30% of a plasticizer, 45-60% of solid powder, 1.0-2.5% of a water removal agent, 0.5-2.0% of a coupling agent, 0.5-3.0% of an accessory additive and 0.05-1.0% of a catalyst. The silane-blocked polyether sealant prepared by using the method is uniformly dispersed, moderate in strength, high in elongation rate, high in elastic recovery rate, excellentin adhesion, environmentally friendly, high in biocompatibility and capable of meeting market requirements in the assembly type construction industry.

Description

technical field [0001] The invention belongs to the technical field of sealants, and in particular relates to a silane-terminated polyether sealant and its preparation method and application. Background technique [0002] In 1978, MS glue was developed and launched by Japan Zhongyuan Chemical Industry Co., Ltd., and it was popularized and applied in large buildings and achieved good results. In the 1990s, the German Wacker Company invented silicon-terminated polyurethane resin, which adopted Wacker's unique α polymerization technology, which is more suitable for the European market. Many domestic companies have also developed different types of sealants according to market demand, but due to the gap in the quality of raw materials, the performance of sealants varies greatly. [0003] The comprehensive properties of silane-terminated polyether sealants are superior, showing excellent weather resistance, durability, high resistance to deformation and displacement, good adhesi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J171/02C09J11/04C09J11/06C09J11/08
CPCC09J171/02C09J11/04C09J11/06C09J11/08C08K2003/265C08K2201/014C08L2205/025C08L2205/03C08L77/00C08K13/04C08K3/26C08K7/26C08K5/544C08K5/1515C08L71/02C08K13/06C08K5/42C08K9/04C08L91/00
Inventor 刘佳金一丰董楠杜明强秦鹏飞
Owner ZHEJIANG HUANGMA TECH
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