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Flame-retardant bi-component polyurethane adhesive and preparation method thereof

A two-component polyurethane and adhesive technology, applied in polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve the problems of performance degradation, poor flame retardancy, and improved flame retardancy, and achieve The effect of improving interface performance

Active Publication Date: 2016-12-14
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In order to solve the problem of poor flame retardant properties of polyurethane adhesive materials in the prior art, and the improvement of flame retardant properties while other properties are greatly reduced, the present invention adopts a method of co-flame retardant modification of soft and hard segments to provide a flame retardant Two-component polyurethane adhesive and preparation method thereof

Method used

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  • Flame-retardant bi-component polyurethane adhesive and preparation method thereof
  • Flame-retardant bi-component polyurethane adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038]A component formula: PPG-1000: 1.00g, TDI: 8.93g. B component formula: BDO: 0.30g, PPG-1000: 6.00g, TMP 1g. The mass percentage content of each component in component A is: the content of diisocyanate TDI is 89.93%, the polyol is polyether polyol PPG-1000, which is 10.07%; no reactive flame retardant is added; each group in component B Points: PPG-1000 is selected for polyol, the content is 82.19%, the content of reactive flame retardant is 0, the cross-linking agent is TMP, the content is 13.70%, and the chain extender is BDO, the content is 4.11%.

[0039] Add the TDI in component A into the three-necked flask, then add the dehydrated PPG-1000 and TMP, stir rapidly, slowly raise the temperature and control it at 80°C, 2 Reaction under protection, sampling analysis—when the NCO mass fraction reaches 10%, the reaction is stopped after about 2.5 hours to obtain a polyisocyanate prepolymer, which is sealed and stored for later use.

[0040] Weigh component B, mix and sti...

Embodiment 2

[0042] A component formula: PPG-1000: 5.30g, PECH-2000: 1.06g, TDI: 5.12g, DBNPG: 1.59g. B component formula: BDO: 0.58g, TMP: 0.59g, PPG-1000: 4.70g, PECH-2000: 0.95g, DBNPG: 1.45g. The mass percentage content of each component in component A is: TDI is used for diisocyanate, and the content is 39.17%; PPG-1000 and PECH-2000 are used for polyols, and the content of PPG-1000 is 40.55%% and the content of PECH-2000 is 8.11%; The reactive flame retardant is DBNPG with a content of 12.17%; the crosslinking agent is 0. Components in component B: PPG-1000 and PECH-2000 are used for polyols, the content of PPG-1000 is 56.83%, and the content of PECH-2000 is 11.49%; the reactive flame retardant is DBNPG, with a content of 17.53%. The agent is TMP, the content is 7.13%, and the chain extender is BDO, the content is 7.01%.

[0043] Add the TDI in component A into the three-necked flask, then add the dehydrated PPG-1000, PECH-2000, DBNPG, stir rapidly, slowly raise the temperature and...

Embodiment 3

[0046] A component formula: PPG-1000: 6.60g, PECH-2000: 2.20g, TDI: 8.61g, DBNPG: 2.0g, B component formula: BDO: 0.80g, TMP: 0.80g, PPG-1000: 6.64g , PECH-2000: 2.21g, DBNPG: 2.40g. The mass percentage content of each component in component A is: TDI is used for diisocyanate, and the content is 44.4%; PPG-1000 and PECH-2000 are used for polyols, and the content of PPG-1000 is 34.0%% and the content of PECH-2000 is 11.3%; The reactive flame retardant is DBNPG with a content of 10.3%; the crosslinking agent is 0. Each component in component B: PPG-1000 and PECH-2000 are selected for polyols, and the content of PPG-1000 is 51.7%; the content of PECH-2000 is 17.2%; the reactive flame retardant is DBNPG with a content of 18.7%, and the crosslinking agent is selected TMP, the content is 6.2%, the chain extender is BDO, the content is 6.2%.

[0047] First add quantitative TDI into the three-necked flask, then add dehydrated PPG-1000, PECH-2000, DBNPG respectively, stir at a consta...

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Abstract

The invention relates to a flame-retardant bi-component polyurethane adhesive and a preparation method thereof. A soft and hard segment co-flame-retarding polyurethane modification method is adopted to prepare an isocyanate group component A and a polyhydric alcohol component B, wherein the component A is prepared from diisocyanate, polyhydric alcohol containing flame-retardant groups and a reactive flame retardant, and the component B is prepared from a chain extender, a crosslinking agent, polyhydric alcohol containing flame-retardant groups and a reactive flame retardant; the component A and the component B are mixed according to a certain proportion and cured, and then the polyurethane adhesive material with good flame retardance is obtained. The initial proportion can be adjusted freely to improve the mechanical property of the polyurethane adhesive material; besides, the overall properties including the flame retardance, the mechanical property, the working life and the like are more excellent; in addition, the process is simple, and application and popularization are easy.

Description

technical field [0001] The invention belongs to the technical field of two-component polyurethane adhesives, and in particular relates to a preparation method of a soft and hard segment co-flame-retardant modified polyurethane adhesive. Background technique [0002] Polyurethane adhesive is a kind of adhesive with a wide range of uses. Because its molecular structure contains a variety of polar and non-polar groups, it has good bonding strength to various materials such as metal, rubber, leather, wood and other materials, and is widely used. [0003] Polyurethane adhesives without flame retardant treatment are combustible. They will burn and produce a lot of toxic smoke when exposed to fire. Polyurethane is a plastic variety that is difficult to flame retard. While the flame retardancy is improved, other properties often cannot meet the application requirements. . Therefore, the research on flame-retardant two-component polyurethane is not only of great significance to the...

Claims

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Application Information

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IPC IPC(8): C09J175/08C08G18/48C08G18/66
CPCC08G18/381C08G18/4808C08G18/4833C08G18/6674C08G18/6677C08G18/6696C08L2201/02C09J175/08
Inventor 王晓青孙超路秋勉罗运军李晓萌
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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