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Environmentally friendly high elasticity sealant and preparation method thereof

A sealant, environmentally friendly technology, applied in the direction of adhesives, adhesive types, non-polymer adhesive additives, etc., can solve the problems of poor elasticity, poor water resistance, insufficient weather resistance and adhesion of polyurethane sealants

Active Publication Date: 2019-06-18
YUZHONGQING WATERPROOF MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The key of the present invention is to combine the silane-modified polyether sealant with the two-component polyurethane sealant curing system. Through the combined use of the two systems, the advantages of the silane-modified polyether sealant and the polyurethane sealant are integrated, and can Solve the problems of poor mechanical properties and difficult adjustment, poor elasticity and poor water resistance of silane-modified polyether sealants alone, and solve the problems of insufficient weather resistance and adhesion of polyurethane sealants alone

Method used

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  • Environmentally friendly high elasticity sealant and preparation method thereof
  • Environmentally friendly high elasticity sealant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] First, Jinshan Chemical Nano Calcium Carbonate SP-3, ExxonMobil DINP, and Wanhua Chemical Polyether Polyol N220 were dried at 110°C until the moisture content was ≤0.1%. Ether polyol and 22 parts of plasticizer, heat up, start stirring, start adding 40 parts of filler when the temperature rises to 90°C, continue to heat up, heat up to 110-120°C while stirring, keep the temperature and vacuum dehydration, test the moisture of the material ≤0.05%, stop vacuuming, start stirring to cool down, add 12 parts of isocyanate Wanhua MDI50 grade 8683 when the temperature drops to about 50-55°C, then continue to stir and heat up to 80-85°C, vacuumize and pass nitrogen protection reaction 3-4.5h, start to cool down, when the temperature reaches below 50°C, add 25 parts of Wacker Chemie silane-modified polyether XM25, 1.0 part of Xinlantian LT792 silane coupling agent, 1.0 part of moisture scavenger Chenguang CG171, and stir at high speed After 0.5h, the sealant A component can be ob...

Embodiment 2

[0026] First, Jinshan Chemical Nano Calcium Carbonate SP-3, ExxonMobil DINP, and Wanhua Chemical Polyether Polyol N220 were dried at 110°C until their moisture content was ≤0.1%. Ether polyol and 20 parts of plasticizer, heat up, start stirring, start adding 35 parts of filler when the temperature rises to 90°C, continue to heat up, heat up to 110-120°C while stirring, maintain the temperature, vacuum dehydrate, and detect the moisture content of the material When ≤0.05%, stop vacuuming and start stirring to cool down. When the temperature drops to about 50-55°C, add 10 parts of Wanhua Chemical TD180 isocyanate, then continue to stir and heat up to 80-85°C, vacuumize and pass nitrogen protection reaction 3 -4.5h, start to cool down, when the temperature reaches below 50°C, add 22 parts of WACKER E35 silane modified polyether, 1.0 part of LT550 silane coupling agent of New Blue Sky Company, 1.0 part of LT171 moisture scavenger of New Blue Sky Company, Stir for 0.5h, discharge a...

Embodiment 3

[0030]First, Jinshan Chemical Nano Calcium Carbonate SP-3, ExxonMobil DIDP, and Wanhua Chemical Polyether Polyol N330 were dried at 110°C until their moisture content was ≤0.1%. Ether polyol and 20 parts of plasticizer, heat up, start stirring, start adding 35 parts of filler when the temperature rises to 90°C, continue to heat up, heat up to 110-120°C while stirring, maintain the temperature, vacuum dehydrate, and detect the moisture content of the material When ≤0.05%, stop vacuuming and start stirring to cool down. When the temperature drops to about 50-55°C, add 10 parts of Wanhua Chemical TDI80 isocyanate, then continue to stir and heat up to 80-85°C, vacuumize and pass nitrogen protection reaction 3 -4.5h, start to cool down, when the temperature reaches below 50°C, add 22 parts of Zhongyuan Chemical S203H silane-modified polyether, 1.0 part of Momentive Chemical 1120 silane coupling agent, 1.0 part of Chenguang CG171 moisture scavenger, and stir at high speed After 0.5h...

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Abstract

The invention discloses an environmentally friendly high elasticity sealant, which is composed of a component (A) and a component (B). The component (A) is composed of silane modified polyether, a silane coupling agent, a water remover, polyether polyol, isocyanate, a plasticizer, a filling material, and an antifoaming agent. The component (B) is prepared by mixing following components: a plasticizer, nano calcium carbonate, a curing agent, a pigment, a catalyst, a thixotropic agent, a silane coupling agent, a light stabilizer, and a UV absorbent. The component (A) and the component (B) are mixed evenly according to a ratio of 10: (0.7-1.0) before using. The prepared sealant has the characteristics of environmentally friendly property, good weatherability, low cost, wide performance adjusting range, and excellent mechanical properties, and can be well adhered on various basic materials such as glass surface, cement surface, stone, and the like.

Description

technical field [0001] The invention relates to a sealant product, in particular to an environment-friendly high-elastic composite sealant containing polyurethane components and silane-modified polyether components. Background technique [0002] Sealant refers to a sealing material that deforms with the shape of the sealing surface, is not easy to flow, and has a certain degree of cohesion. It is an adhesive used to fill the gap in the configuration to play a sealing role. heat insulation etc. At present, common sealant products on the market are mainly divided into polyurethane sealant, silicone sealant, polysulfide sealant, and silane-modified polyether (MS) sealant according to their chemical structure. Among them, silicone sealant is the most common type of sealant on the market. It has good bonding performance and aging resistance to common base layers. The base surface is obviously polluted, and the finish is poor. After the product is used, it is easy to cause pollu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/08C09J171/00C09J11/04
Inventor 耿进玉李宏伟田益
Owner YUZHONGQING WATERPROOF MATERIALS CO LTD
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