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Flame-retardant high-weather-resistance polysulfide sealant and preparation method thereof

A polysulfide sealant, high weather resistance technology, applied in adhesives, polymer adhesive additives, non-polymer adhesive additives, etc., can solve problems such as potential safety hazards, flammable raw materials, and reduced sealant strength

Active Publication Date: 2016-05-04
上海创益中空玻璃材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polysulfide sealant is used in a wide range and is a very good sealing material. It has the advantages of very reliable sealing effect and convenient use, but because the raw material is flammable, it causes certain safety hazards. Although the addition of inorganic flame retardants can have improved, but there are often compatibility problems and reduce the strength of the sealant

Method used

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  • Flame-retardant high-weather-resistance polysulfide sealant and preparation method thereof
  • Flame-retardant high-weather-resistance polysulfide sealant and preparation method thereof

Examples

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preparation example Construction

[0044] In one embodiment, the preparation method of the silane modified hyperbranched polyimide comprises:

[0045] (1) Preparation of amino-terminated hyperbranched polyimide

[0046]In a dry three-necked flask, sequentially add 1 mmol of triamine, 1 to 1.3 mmol of dianhydride, 2 mmol of benzoic acid, 0.5 to 3 mL of isoquinoline and 10 to 500 mL of a good organic solvent; , heat up to 100-160°C for 1-4 hours, then heat up to 180-220°C for 2-20 hours; after the reaction, cool down to room temperature and pour the reaction solution into methanol to precipitate a large amount of solid; After repeated washing, filter with suction and dry the collected solid in a vacuum oven at 30-80°C for 2-10 hours to obtain amino-terminated hyperbranched polyimide;

[0047] (2) Preparation of silane-modified hyperbranched polyimide

[0048] Add 10 parts by weight of the above-mentioned amino-terminated hyperbranched polyimide, 1-30 parts by weight of epoxy silane coupling agent KH-5600 and an...

Embodiment 1

[0119] Component A: Add A1100 parts by weight, B110 parts by weight, C120 parts by weight, D15 parts by weight, E12 parts by weight and F11 parts by weight into a vacuum-tight mixer and mix thoroughly for 30 minutes;

[0120] Component B: Add G1100 parts by weight, H12 parts by weight, I110 parts by weight, B12 parts by weight, F12 parts by weight, J12 parts by weight and K12 parts by weight into the vacuum sealed mixer, and mix thoroughly for 30 minutes;

[0121] Ratio A:B=10:1, mix evenly; when using, mix A and B components in proportion, apply within 2 hours, and completely cure within 5 hours at room temperature.

Embodiment 2

[0123] Component A: Add A1100 parts by weight, B130 parts by weight, C130 parts by weight, D115 parts by weight, E110 parts by weight and F110 parts by weight into a vacuum-tight mixer, and mix thoroughly for 30 minutes;

[0124] Component B: Add 100 parts by weight of Gl, 10 parts by weight of Hl, 140 parts by weight of I, 110 parts by weight, F110 parts by weight, J110 parts by weight and K110 parts by weight into a vacuum-tight mixer, and mix thoroughly for 30 minutes;

[0125] Ratio A:B=10:1, mix evenly; when using, mix A and B components in proportion, apply within 2 hours, and completely cure within 5 hours at room temperature.

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Abstract

The invention discloses flame-retardant high-weather-resistance polysulfide sealant. The flame-retardant high-weather-resistance polysulfide sealant comprises an A-component adhesive and a B-component adhesive, wherein the A-component adhesive is prepared from liquid polysulfide rubber, butyl benzyl phthalate, calcium carbonate, sulfur, silane modified hyperbranched polyimide and chlorinated paraffin; the B-component adhesive is prepared from manganese dioxide, a vulcanization accelerator, carbon black, butyl benzyl phthalate, chlorinated paraffin, silane modified hyperbranched polybenzimidazole and 2,2'-bis(4-carboxyphenoxy)benzidine. The invention further discloses a preparation method of the flame-retardant high-weather-resistance polysulfide sealant.

Description

technical field [0001] The invention belongs to the technical field of polymer sealing materials, and more specifically, the invention relates to a flame-retardant high-weather-resistant polysulfide sealant and a preparation method thereof. Background technique [0002] Polysulfide sealant is used in a wide range and is a very good sealing material. It has the advantages of very reliable sealing effect and convenient use, but because the raw material is flammable, it causes certain safety hazards. Although the addition of inorganic flame retardants can have It has been improved, but there are often compatibility problems and the strength of the sealant is reduced. In addition, since the sealant is often used in different regions and fields, such as on buildings or airstrips, it is also expected that it has good weather resistance and acid-base adaptability to prolong its service life. [0003] Therefore, it is very necessary to improve the formulation and production process...

Claims

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Application Information

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IPC IPC(8): C09J181/04C09J11/04C09J11/06C09J11/08
CPCC08K2201/014C08L2201/02C08L2205/025C08L2205/035C09J11/04C09J11/06C09J11/08C09J181/04C08L79/08C08L91/06C08K13/02C08K5/12C08K2003/265C08K3/06C08K3/04
Inventor 罗金
Owner 上海创益中空玻璃材料有限公司
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