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A kind of preparation method of polyurethane fireproof adhesive for building

A fire-resistant adhesive and polyurethane technology, used in polyurea/polyurethane adhesives, adhesives, non-polymer adhesive additives, etc., can solve problems such as flame retardant performance not as good as polyester polyol, hydrolysis resistance, performance impact, etc. , to achieve the effect of improving high temperature resistance, improving flame retardant performance and good flame retardant effect

Active Publication Date: 2019-09-27
骏能化工(龙南)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of reactive flame retardants is high in cost, affects the proportion of polyurethane, and will also have a certain impact on performance
[0006] Traditional polyurethane adhesives mostly use polyether polyol as the polyol component, which has the advantage of hydrolysis resistance, but its flame retardancy is not as good as that of polyester polyol, and polyester polyol will face the problem of not being resistant to hydrolysis. Some reports have pointed out that polypropylene carbonate polyol has excellent hydrolysis resistance, such as CN105482068A, CN1865311A, CN106589300A, etc., but there is no literature attempt to use polypropylene carbonate polyol to prepare polyurethane fireproof adhesive for construction

Method used

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  • A kind of preparation method of polyurethane fireproof adhesive for building

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of polyurethane fireproof adhesive for construction, prepared as follows:

[0032] (1) Preparation of prepolymer components: 10 parts by mass of polypropylene carbonate diol with a number average molecular weight of 1000 was vacuum-dried at 100°C for 3 hours to remove water, and after cooling down to 80°C, polyphenylene polyphenylene 70 parts by mass of methyl polyisocyanate, 5 parts by mass of antimony trioxide, 3 parts by mass of asbestos fiber, 0.01 part by mass of stannous octoate, stirred and mixed, and reacted for 5 hours to obtain a prepolymer;

[0033] (2) Preparation of polyol components: Weigh 60 parts by mass of polypropylene carbonate diol with a number average molecular weight of 6000, 3 parts by mass of 1,4-butanediol, and 2 parts by mass of trimethylolpropane, containing 5 parts of brominated polyol firemaster 520, stirred and mixed evenly to obtain the polyol component;

[0034] (3) Preparation of fireproof glue: Mix the prepolymer component obta...

Embodiment 2

[0036] A kind of polyurethane fireproof adhesive for construction, prepared as follows:

[0037] (1) Preparation of prepolymer components: 5 parts by mass of polypropylene carbonate diol with a number average molecular weight of 2000 was vacuum-dried at 100°C for 2 hours to remove water, and after cooling down to 70°C, polyphenylene polyphenylene 60 parts by mass of methyl polyisocyanate, 4 parts by mass of antimony trioxide, 4 parts by mass of asbestos fiber, 0.2 part by mass of dibutyltin dilaurate, stirred and mixed, and reacted for 5 hours to obtain a prepolymer;

[0038] (2) Preparation of polyol components: Weigh 50 parts by mass of polypropylene carbonate diol with a number average molecular weight of 6000, 3 parts by mass of 1,6-hexanediol, 2 parts by mass of glycerin, bromine-containing polyol firemaster 520 10 parts by mass, stirred and mixed uniformly to obtain the polyol component;

[0039] (3) Preparation of fireproof glue: Mix the prepolymer component obtained i...

Embodiment 3

[0041] A kind of polyurethane fireproof adhesive for construction, prepared as follows:

[0042] (1) Preparation of prepolymer components: 10 parts by mass of polypropylene carbonate diol with a number average molecular weight of 1500 was vacuum-dried at 95°C for 3 hours to remove water, and after cooling down to 80°C, polyphenylene polyethylene 70 parts by mass of methyl polyisocyanate, 5 parts by mass of antimony trioxide, 4 parts by mass of asbestos fiber, 0.1 part by mass of stannous octoate, stirred and mixed, and reacted for 6 hours to obtain a prepolymer;

[0043] (2) Preparation of polyol components: Weigh 60 parts by mass of polypropylene carbonate diol with a number average molecular weight of 6000, 3 parts by mass of 1,4-butanediol, and 3 parts by mass of trimethylolpropane, containing 7 parts by mass of brominated polyol firemaster 520, stirred and mixed evenly to obtain the polyol component;

[0044] (3) Preparation of fireproof glue: Mix the prepolymer component...

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Abstract

The invention relates to a preparation method of polyurethane fireproof glue used for a building. The polyurethane fireproof glue used for the building is prepared by mixing a prepolymer component anda polyol component, wherein the prepolymer component is prepared from diisocyanate, antimony trioxide, asbestos fiber, polypropylene carbonate polyol and a catalyst, and the polyol component is prepared from polypropylene carbonate polyol, a chain extender, a crosslinking agent and bromine-containing polyol; and antimony trioxide, asbestos fiber, bromine-containing polyol have a synergistic flameretardant effect, and the obtained fireproof glue can give consideration to flame retardant property, flame retardant durability and mechanical properties at the same time.

Description

technical field [0001] The invention relates to the field of polyurethane fireproof adhesives, in particular to a polyurethane fireproof adhesive for construction which can simultaneously take into account flame-retardant performance, flame-retardant durability and mechanical properties and a preparation method thereof. Background technique [0002] Polyurethane adhesives have excellent elasticity, low temperature resistance, wear resistance and good bonding properties. Therefore, it is widely used in fields such as construction, automobile, home improvement, waterproofing and shipbuilding. [0003] However, polyurethane adhesive is flammable, and when it is burned by an external heat source, there are problems such as large flame, fast burning speed, severe dripping, thick smoke and toxic gas, which seriously threaten people's life and property safety. With the improvement of people's requirements for fireproof performance in the construction field, more and more attention...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/04C09J11/04C08G18/76C08G18/66C08G18/44C08G18/32C08G18/10
Inventor 严润达
Owner 骏能化工(龙南)有限公司
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