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Two-component silane-modified polyether sealing material and preparation method thereof

A technology of silane-modified polyether and sealing materials, which is applied in the direction of polyether adhesives, chemical instruments and methods, and other chemical processes. It can solve the problems of slow deep-layer curing, high-temperature dehydration, and long cycle time, and achieve long production cycle. , low cost, small change effect

Active Publication Date: 2018-08-14
GUANGZHOU BAIYUN CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the one-component product is easy to use, it needs high temperature dehydration and cooling during production, which has a long cycle and high cost; and curing depends on the moisture in the air, which is significantly affected by the external environment. When the humidity is low, the surface dries slowly when the temperature is low, and the humidity is high. , When the temperature is high, the surface dries quickly, the curing is from the surface to the inside, and the deep layer is cured slowly. Generally, the curing thickness is 4-6mm in 24 hours

Method used

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  • Two-component silane-modified polyether sealing material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0033] A two-component silane-modified polyether sealing material, the raw materials of which are composed of:

[0034] Component A: 30 parts of silane-modified polyether (SAT400 from Kaneka Corporation of Japan), 40 parts of filler A (including 30 parts of nano-active calcium carbonate and 10 parts of heavy calcium carbonate), reinforcing filler (hydrophobic gas-phase white carbon Black) 10 parts, toner (carbon black) 15 parts, thixotropic agent (polyamide wax) 0.05 parts, light stabilizer 0.12 parts (including BASF's UV-P 0.02 and 770 0.1 parts), crosslinking agent (positive Ethyl silicate) 1 part, coupling agent (N-aminoethyl-γ-aminopropyltriethoxysilane) 0.05 part;

[0035] Component B: 40 parts of plasticizer (PPG), filler B (50 parts of nano-active calcium carbonate, 5 parts of kaolin), 0.03 parts of organotin catalyst (dibutyltin diacetylacetonate), titanium catalyst (diisopropyl Oxygen diacetylacetonate titanium) 2 parts.

[0036] The preparation method of the above-...

Embodiment 2

[0040] A two-component silane-modified polyether sealing material, the raw materials of which are composed of:

[0041] Component A: 50 parts of silane-modified polyether (30 parts of SAT400 and 20 parts of S303H of Kaneka Corporation in Japan), 20 parts of plasticizer (DIDP), filler A (including 50 parts of nano-active calcium carbonate and 10 parts of silicon micropowder) 60 parts), 10 parts of reinforcing filler (hydrophobic fumed silica), 10 parts of toner (titanium dioxide), 3 parts of thixotropic agent (including 2 parts of hydrogenated castor oil and 1 part of organic bentonite), light stabilizer (including 326 0.5 parts of BASF and 788 0.5 parts) 1 part, coupling agent (including 2 parts of γ-methacryloxypropyl trimethoxysilane and 1 part of isocyanate propyl trimethoxysilane) 3 parts;

[0042] Component B: 30 parts of plasticizer (DIDP), 40 parts of extender filler B (nano-active calcium carbonate), 0.1 part of organotin catalyst (dibutyltin dilaurate), 8 parts of tit...

Embodiment 3

[0047] A two-component silane-modified polyether sealing material, the raw materials of which are composed of:

[0048] Component A: 50 parts of silane-modified polyether (S303H of Japan Kaneka Company), 20 parts of plasticizer (DINP), 60 parts of filler A (nano-active calcium carbonate), reinforcing filler (hydrophobic fumed white carbon) Black) 5 parts, toner (titanium dioxide) 15 parts, thixotropic agent (including 2 parts of polyamide wax and 0.05 part of organic bentonite) 2.05 parts, light stabilizer (including BASF's UV-9 0.05 part and 622 0.05 part) 0.1 part, 3 parts of crosslinking agent (including 1 part of methyltrimethoxysilane and 2 parts of vinyltrimethoxysilane), 3 parts of coupling agent (1 part of γ-glycidyl etheroxypropyl trimethoxysilane, 1 part of γ- 2 parts of aminopropyltriethoxysilane coupling agent) 3 parts;

[0049] Component B: 20 ​​parts of plasticizer (DINP), 20 parts of filler B (including 10 parts of heavy calcium carbonate and 10 parts of nano-a...

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Abstract

The invention discloses a bi-component silane modified polyether sealing material and a preparation method thereof. The bi-component silane modified polyether sealing material comprises silane modified polyether, a plasticizer, an incremental filler A, a reinforcing filler, a toner, a thixotropic agent, a light stabilizer, hollow glass microspheres, a cross-linking agent, a coupling agent, an incremental filler B, an organic tin catalyst and a titanium catalyst. According to the bi-component silane modified polyether sealing material, organic tin is partially replaced with the titanium catalyst and is low in content, so that the harm of organic tin can be reduced; the production process is simple, a high temperature dehydration process is omitted, and the cost is low; the external and internal parts of a glue layer are simultaneously cured by virtue of moisture of the glue layer during curing, so that the defects that single-component silane modified polyether sealing glue is cured from outside to inside by virtue of moisture and the dept curing is slow are overcome, and the variation of curing rate along the external environment is small, so that the production efficiency is greatly improved; the bi-component silane modified polyether sealing material has good construction stability and can be widely applied to the fields of buildings, automobiles, locomotives, electric products and the like.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a two-component silane-modified polyether sealing material and a preparation method thereof. Background technique [0002] Traditional sealants mainly include polysulfide, silicone, polyurethane, epoxy, etc. Polysulfide sealant has disadvantages such as odor, slow curing at low temperature, easy aging and hardening, and poor durability; silicone sealant has excellent aging resistance, but its strength is low and pollution resistance is poor; polyurethane sealant has high strength, but contains Free isocyanate is easy to form bubbles during curing, has poor aging resistance, and often needs to be used with a primer. The epoxy sealant has high strength after curing, but it is very brittle, has a large internal stress, and has poor aging resistance and yellowing resistance. [0003] With the development of the economy, customers have higher and higher requirements for the performa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J171/00C09J11/04C09J11/06C09J11/08C09K3/10
Inventor 龙飞陈建军陈何国蒋金博陈弘高敏华
Owner GUANGZHOU BAIYUN CHEM IND
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