High-performance flame-retardant double-component silane modified polyether sealant and preparation method thereof
A silane-modified polyether, flame-retardant technology, applied in the field of sealants, can solve problems such as difficult to meet the flame-retardant performance requirements of sealant products, and achieve good curing rate stability and construction stability, good mechanical properties, fast curing effect
Active Publication Date: 2017-06-13
BEIJING HUATENG NEW MATERIAL CO LTD +1
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Problems solved by technology
After testing, it is found that the oxygen index of MS and SPU sealants sold on the market is lower than 21, and the vertical combustion is lower than the FV-0 level. They are flammable materials, and it is difficult to meet the requirements of "GB / T24267-2009 Flame-retardant sealants for construction" "Requirements for flame retardant performance of sealant products in
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0030] Component A:
[0031]
[0032] The ratio of component B:
[0033]
[0034] Flame retardant filler:
[0035] Magnesium Trisilicate 30%
[0036] Ammonium polyphosphate 50%
[0037] Pentaerythritol 20%.
Embodiment 2
[0039] Component A:
[0040]
[0041] Component B:
[0042]
[0043] Flame retardant filler:
[0044]
[0045]
Embodiment 3
[0047] Component A:
[0048]
[0049] Component B:
[0050]
[0051] Flame retardant filler:
[0052] Magnesium Trisilicate 25%
[0053] Melamine polyphosphate 55%
[0054] Pentaerythritol 20%.
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Abstract
The invention relates to a high-performance flame-retardant double-component silane modified polyether sealant and a preparation method thereof, and belongs to the technical field of sealants. The silane modified polyether sealant comprises a component A and a component B, wherein the component A comprises the following raw materials in percentage by mass: 40-80% of MS polymer, 0-4% of dehydration agent, 0-4% of crosslinking agent, 10-50% of reinforcing filler and 0.1-2% of catalyst; and the component B comprises the following raw materials in percentage by mass: 30-60% of MS polymer, 8-30% of plasticizer, 0.2-3% of coupling agent, 1-10% of water and 20-60% of flame-retardant filler. Thus, the sealant has favorable mechanical property while achieving flame retardancy.
Description
technical field [0001] The invention relates to a high-performance flame-retardant two-component silane-modified polyether sealant and a preparation method, belonging to the technical field of sealants. Background technique [0002] MS resins are polyether resins terminated with siloxane groups. MS resin was successfully developed by Japan Zhonghui Co., Ltd. in 1978. It is prepared by capping polypropylene oxide with dimethoxysilane. The "Zhonghui MS Polymer" sealant based on it was first used in English in 1981 on the high-rise building of the Tokyo headquarters of Japan's Daiichi Kanye Bank, and then quickly occupied the Japanese high-end sealant market due to its excellent performance. By 1996, its market share had surpassed that of polyurethane sealants, and its current annual output exceeded 40,000 tons. [0003] At present, there are very few flame retardant researches on silicone-terminated moisture-curing polymer resins at home and abroad, and they mainly stay at t...
Claims
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IPC IPC(8): C09J171/00C09J11/06C09J11/04
CPCC08L2201/02C08L2205/025C09J11/04C09J11/06C09J171/00C08L71/00C08K13/02C08K3/34C08K2003/323C08K5/053C08K5/34922C08K5/34928
Inventor 陈宇韩航张群吕铭华李明崔正景江
Owner BEIJING HUATENG NEW MATERIAL CO LTD
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