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Flame-retardant solvent-free two-component polyurethane structural adhesive and preparation method thereof

A two-component polyurethane, solvent-free technology, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve the problems of low practical ratio, low mechanical strength, slow curing speed, etc., to achieve Fast curing speed, high reactivity, excellent flame retardant effect

Active Publication Date: 2020-04-03
GUANGZHOU MECHANICAL ENG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above two two-component polyurethane adhesives have good flame retardant properties, they all have the following disadvantages: 1) slow curing speed; 2) low mechanical strength and weak adhesion; 3) high toxicity and low environmental protection; 4) When the two components are mixed and used, the practicability of the ratio is low

Method used

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  • Flame-retardant solvent-free two-component polyurethane structural adhesive and preparation method thereof
  • Flame-retardant solvent-free two-component polyurethane structural adhesive and preparation method thereof
  • Flame-retardant solvent-free two-component polyurethane structural adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A flame-retardant solvent-free two-component polyurethane structural adhesive, wherein the raw material composition of component A and component B is shown in the following table:

[0055] Table 1 The raw material composition of component A and component B in the flame-retardant solvent-free two-component polyurethane structural adhesive

[0056]

[0057]

[0058] Note:

[0059] VORANOL 2000LM: American Dow;

[0060] CUCAT-RM: Environmental protection catalyst of Guangzhou Yourun Synthetic Materials Co., Ltd.;

[0061] PAPI-135C: American Dow.

[0062] The preparation method of the above-mentioned flame-retardant solvent-free two-component polyurethane structural adhesive comprises the following steps:

[0063] 1) Raw material pretreatment: put ammonium polyphosphate, aluminum hydroxide, molecular sieve, nano-calcium carbonate and fumed silica in an oven, dry at 100°C for 8 hours, take it out and cool it for later use;

[0064] 2) Preparation of component A: A...

Embodiment 2

[0068] A flame-retardant solvent-free two-component polyurethane structural adhesive, wherein the raw material composition of component A and component B is shown in the following table:

[0069] Table 2 The composition of raw materials of components A and B in the flame-retardant solvent-free two-component polyurethane structural adhesive

[0070]

[0071]

[0072] Note:

[0073] VORANOL 2000LM: American Dow;

[0074] CUCAT-RC10A: Environmental protection catalyst of Guangzhou Yourun Synthetic Materials Co., Ltd.;

[0075] PM-200: Wanhua Chemical Group Co., Ltd.

[0076] The preparation method of the above-mentioned flame-retardant solvent-free two-component polyurethane structural adhesive comprises the following steps:

[0077] 1) Raw material pretreatment: put ammonium polyphosphate, aluminum hydroxide, magnesium hydroxide and calcium oxide in an oven, dry at 120°C for 4 hours, take out and cool for later use;

[0078] 2) Preparation of component A: Add the raw...

Embodiment 3

[0082] A flame-retardant solvent-free two-component polyurethane structural adhesive, wherein the raw material composition of component A and component B is shown in the following table:

[0083] Table 3 The composition of raw materials of components A and B in the flame-retardant solvent-free two-component polyurethane structural adhesive

[0084]

[0085]

[0086] Note:

[0087] VORANOL 2000LM: American Dow;

[0088] CUCAT-S01A: Environmental protection catalyst of Guangzhou Yourun Synthetic Materials Co., Ltd.;

[0089] PM-200: Wanhua Chemical Group Co., Ltd.

[0090] The preparation method of the above-mentioned flame-retardant solvent-free two-component polyurethane structural adhesive comprises the following steps:

[0091] 1) Raw material pretreatment: put ammonium polyphosphate, aluminum hydroxide, magnesium hydroxide, calcium oxide, nano-zinc oxide and silicon micropowder in an oven, dry at 110°C for 6 hours, take it out and cool it for later use;

[0092]...

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Abstract

The invention discloses a flame-retardant solvent-free two-component polyurethane structural adhesive and a preparation method thereof. The flame-retardant solvent-free two-component polyurethane structural adhesive is composed of components A and components B. The components A comprise polyol, a chain extender, a diluent, a flame retardant, a foaming inhibitor, an environment-friendly catalyst, areinforcing filler and a thixotropic agent, and the components B comprise polymerized MDI, a diluent, polyol, a flame retardant, a thixotropic agent, a foaming inhibitor and a reinforcing filler. Thepreparation method of the flame-retardant solvent-free two-component polyurethane structural adhesive is very simple, and the flame-retardant solvent-free two-component polyurethane structural adhesive can be prepared by uniformly mixing the raw materials in the components A and the components B in proportion and then packaging respectively. The flame-retardant solvent-free two-component polyurethane structural adhesive is high in curing speed, high in bonding strength, excellent in flame retardance, low in toxicity, safe, environmentally friendly and convenient to use.

Description

technical field [0001] The invention relates to a flame-retardant solvent-free two-component polyurethane structural adhesive and a preparation method thereof, belonging to the technical field of polyurethane adhesives. Background technique [0002] Two-component polyurethane structural adhesive is one of many types of polyurethane adhesives, which are divided into solvent-based and solvent-free. Solvent-free two-component polyurethane adhesive has the following characteristics: 1) 100% solid content, all raw materials are used, no solvent volatilization, which belongs to energy-saving and emission-reduction technology; 2) belongs to reactive adhesive, after mixing the two components Cross-linking reaction occurs, good initial viscosity, high bonding strength, both room temperature curing and heating curing; 3) The two components are well adjustable, and the composition and relative molecular weight of the raw materials can be adjusted during preparation, so that it has a su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04C09J11/04C08G18/76C08G18/66C08G18/32C08G18/42C08G18/48C08G18/50C08G18/54
CPCC09J175/04C09J11/04C08G18/7664C08G18/6674C08G18/3206C08G18/4018C08G18/4277C08G18/4288C08G18/4202C08G18/4804C08G18/5003C08G18/542C08G18/4027C08K2003/323C08K2003/2227C08K2003/2224C08L2201/02C08K13/04C08K3/32C08K3/22C08K7/26
Inventor 李吉明欧静余晓桃王泉
Owner GUANGZHOU MECHANICAL ENG RES INST
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