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A kind of flame-retardant silane-modified polyether sealant and preparation method thereof

A silane-modified polyether and sealant technology, which is applied in the field of sealants, can solve the problems of easy moisture absorption of flame retardants, low production efficiency, and reduced mechanical properties of materials

Active Publication Date: 2021-05-18
GUANGXI HUANA NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent CN102660214A discloses a one-component flame-retardant silane-modified polyether sealant and its preparation method. The sealant component includes trimethoxysilyl or dimethoxysilyl-terminated polyether, and Phthalic acid or sulfonate plasticizers, extender fillers, reinforcing fillers, thixotropic agents, UV absorbers / stabilizers, flame retardants and other additives, the preparation of the sealant described in this patent requires first Use a kneader to prepare the base glue, then transfer it to a biaxial planetary stirring tank, and then add catalysts and other additives to prepare the glue. The process is complicated and unfavorable to operate, and the production efficiency is low and the cost is high.
However, the added flame retardant is easy to absorb moisture and has poor compatibility with the sealant matrix resin, and the mechanical properties of the material are reduced due to a large amount of addition

Method used

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  • A kind of flame-retardant silane-modified polyether sealant and preparation method thereof
  • A kind of flame-retardant silane-modified polyether sealant and preparation method thereof
  • A kind of flame-retardant silane-modified polyether sealant and preparation method thereof

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Embodiment 1

[0035] The flame-retardant silane-modified polyether sealant of this embodiment is formed by mixing the following raw materials in parts by weight:

[0036]

[0037] The preparation method of described silane modified polyether sealant comprises the steps:

[0038] (1) Weigh each raw material according to the above ratio, add silane-modified polyether resin, plasticizer and flame retardant to a high-speed mixer at room temperature, and stir and mix at a speed of 25 rpm for 5 minutes;

[0039](2) Then add nano-calcium carbonate, antioxidant and thixotropic agent, stir at 25rpm for 8min, switch to high-speed stirring at 40rpm, then raise the temperature to 100°C, and turn on the vacuum when the temperature is reached. Under vacuum conditions, the vacuum degree is 0.09±0.05 Continue to stir for 1h under MPa to obtain a mixture;

[0040] (3) Cool the above mixture to below 40°C, then add light stabilizer, water remover, adhesion promoter and catalyst, and continue to stir at 4...

Embodiment 2

[0043] The flame-retardant silane-modified polyether sealant of this embodiment is formed by mixing the following raw materials in parts by weight:

[0044]

[0045]

[0046] The preparation method of described silane modified polyether sealant comprises the steps:

[0047] (1) Weigh each raw material according to the above ratio, add silane-modified polyether resin, plasticizer and flame retardant to a high-speed mixer at room temperature, and stir and mix at a speed of 30 rpm for 8 minutes;

[0048] (2) Then add nano-calcium carbonate, antioxidant and thixotropic agent, stir at 30rpm for 5min, switch to high-speed stirring at 40rpm, then heat up to 110°C, and turn on the vacuum when the temperature is reached. Under vacuum conditions, the vacuum degree is 0.09±0.05 Continue stirring for 1.5h under MPa to obtain a mixture;

[0049] (3) Cool the above mixture to below 40°C, then add light stabilizer, water remover, adhesion promoter and catalyst, and continue to stir at...

Embodiment 3

[0052] The flame-retardant silane-modified polyether sealant of this embodiment is formed by mixing the following raw materials in parts by weight:

[0053]

[0054] The preparation method of described silane modified polyether sealant comprises the steps:

[0055] (1) Weigh each raw material according to the above ratio, add silane-modified polyether resin, plasticizer and flame retardant to a high-speed mixer at room temperature, and stir and mix at a speed of 20 rpm for 10 minutes;

[0056] (2) Then add nano-calcium carbonate, antioxidant and thixotropic agent, stir at 20rpm for 10min, switch to high-speed stirring at 50rpm, then raise the temperature to 120°C, and turn on the vacuum when the temperature is reached. Under vacuum conditions, the vacuum degree is 0.09±0.05 Continue stirring for 2h under MPa to obtain a mixture;

[0057] (3) Cool the above mixture to below 40°C, then add light stabilizer, water remover, adhesion promoter and catalyst, and continue to stir ...

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Abstract

The invention discloses a flame-retardant silane-modified polyether sealant and a preparation method thereof. The sealant is prepared by mixing the following raw materials in parts by weight: 50-100 parts of silane-modified polyether resin, reinforcing filler 80-150 parts, 10-35 parts of plasticizer, 5-10 parts of flame retardant, 0.1-1 part of antioxidant, 1-2 parts of light stabilizer, 2-8 parts of thixotropic agent, 1-4 parts of water remover 2-6 parts of adhesion promoter and 0.1-1 part of catalyst. Described flame retardant is one or more in flame-retardant glycol (BHAPE), P-N type ricinoleic acid-based polyether polyol (FRPE) and P-containing ricinoleic acid-based polyether polyol (COFPL) kind of combination. The sealant prepared by the invention has the advantages of excellent flame retardant performance, good bonding performance, good mechanical properties, fast curing and other weather resistance, and is suitable for bonding materials that require high flame retardant performance, such as indoor fireproof doors and windows, public fireproof facilities, etc. and seal.

Description

technical field [0001] The invention relates to the technical field of sealants, in particular to a flame-retardant silane-modified polyether sealant and a preparation method thereof. Background technique [0002] Modern society has increasingly stringent safety requirements, and it is necessary to improve the safety performance of sealants. For modern buildings, especially high-rise buildings, a qualified and effective fire prevention and sealing system is indispensable. Flame-retardant sealant is an important part of the entire fire-proof sealing system. It not only has the excellent performance of ordinary sealant products, but also adapts to the sealing and sealing of different gaps, and has good adhesion to various building and decoration materials; It also has the function of fire prevention, and has obvious flame retardancy compared with ordinary sealing materials. [0003] Silane-modified polyether is a prepolymer with polyether as the main chain and alkoxy-termina...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J171/00C09J11/04C09J11/06C09J11/08
CPCC08K2003/265C08K2201/011C08L2201/02C09J11/04C09J11/06C09J11/08C09J171/00C08L77/00C08L71/00C08K3/26C08K5/1345C08K3/34C08K5/12C08K5/526
Inventor 黄本卫朱勇陈霞李仁才方贵坜
Owner GUANGXI HUANA NEW MATERIALS TECH CO LTD
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