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A kind of polyurethane fireproof adhesive for construction

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

Active Publication Date: 2019-11-15
WEIHAI CHENGJING SILICONE TECH
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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 polyurethane fireproof adhesive for construction

Examples

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 polyethylene 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 obtai...

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 polyurethane fireproof adhesive for construction, which is composed of a prepolymer component and a polyol component, wherein the prepolymer component is composed of diisocyanate, antimony trioxide, asbestos fiber, polypropylene carbonate polyol 1. The catalyst is composed of a polyol component composed of polypropylene carbonate polyol, a chain extender, a crosslinking agent, and bromine-containing polyol. Among them, antimony trioxide, asbestos fiber, and bromine-containing polyols have a synergistic flame-retardant effect, and the obtained fire-resistant adhesive can simultaneously take into account flame-retardant performance, flame-retardant durability, and mechanical properties.

Description

technical field [0001] The invention relates to the field of polyurethane fireproof adhesives, in particular to a polyurethane fireproof adhesive for construction that can simultaneously take into account flame-retardant performance, flame-retardant durability and mechanical properties. 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 has been paid to the flame retard...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/06C09J11/04C09J11/06C08G18/44C08G18/12C08G18/32C08G18/76C08G18/66
CPCC08G18/12C08G18/44C08G18/7664C09J11/04C09J175/06C08G18/6644C08G18/3206C08G18/381C08G18/6633C08K7/12C08K3/2279
Inventor 严润达
Owner WEIHAI CHENGJING SILICONE TECH
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