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A kind of two-component polyurethane structural adhesive and its preparation method and application

A two-component polyurethane and structural adhesive technology, applied in the direction of polyurea/polyurethane adhesive, adhesive type, adhesive, etc., can solve the problems of low adhesive strength and no advantage in bonding, and reach the sizing temperature The effect of low, wide bonding applicability, and high initial strength

Active Publication Date: 2022-04-12
格丽泰新材料科技(苏州)有限公司
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Problems solved by technology

The adhesive described in this patent has low strength and has no advantages for bonding plastic substrates, and is mainly used for ordinary caulking and sealing of high-deformation parts

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  • A kind of two-component polyurethane structural adhesive and its preparation method and application
  • A kind of two-component polyurethane structural adhesive and its preparation method and application
  • A kind of two-component polyurethane structural adhesive and its preparation method and application

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Embodiment Construction

[0049] The present invention will be described in further detail below in conjunction with specific examples, but the present invention is not limited to the following examples. The implementation conditions adopted in the examples can be further adjusted according to the different requirements of specific use, and the implementation conditions not indicated are the conventional conditions in this industry. The parts involved in the present invention are parts by weight.

[0050] (1) Polyols in component A: A1: Polyether triols (molecular weight 1000g / mol, Kunshan Guodu Chemical Co., Ltd.), A2: Hydrophobic polyols (brand Sovermol, functionality 2.0, average hydroxyl value approx. 200-210mgKOH / g), A3: polybutadiene polyol (hydroxyl value 44-56mgKOH / g, Zibo Qilong Chemical Co., Ltd.), A4: small molecule chain extender TMP (hydroxyl value, 1254mgKOH / g, BASF company ), molecular sieve: 3A type, Shanghai Youxin Molecular Sieve Co., Ltd., silane coupling agent: SilquestA-187, MOMEN...

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Abstract

The invention relates to a two-component polyurethane structural adhesive and its preparation method and application. The raw material formula of component A includes: 5-40% of at least one hydrophobic polyol; 10-40% of at least one polybutadiene polyol; 50%; at least one polyether polyol 5-40%; catalyst 0.05-0.5%; molecular sieve 2-10%; 90%; filler 9-55%; dewatering agent 1-5%. Compared with the traditional two-component polyurethane structural adhesive, the invention has high initial strength and high elasticity, and has wider applicability for bonding plastic substrates. Compared with single-component polyurethane hot melt adhesive, no special equipment is required, and the low temperature of gluing will not cause damage to the material. Compared with two-component epoxy structural adhesives and acrylic structural adhesives, the product has higher elongation, less shrinkage after curing, and extremely low odor.

Description

technical field [0001] The invention belongs to the technical field of chemical structural adhesives, in particular to a two-component polyurethane structural adhesive and its preparation method and application. Background technique [0002] China is currently the world's largest auto producer, accounting for about 30% of global production. Accompanied by serious automobile fuel consumption and exhaust emissions. According to the policy requirements of energy conservation and environmental protection, automobile lightweight is one of the most effective ways to save energy, and it is also an important goal pursued by international advanced automobile manufacturers. It is estimated that every 10% reduction in vehicle weight will save 8%-10% of fuel, CO 2 The emissions are reduced by 0.5-0.8g / km. [0003] The use of high-performance lightweight materials is an important way to realize the lightweight of automobiles, so plastic materials are increasingly used in automobile ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/14C08G18/10C08G18/40C08G18/69C08G18/48C08G18/32C08G18/65C08G18/66
CPCC09J175/14C08G18/10C08G18/4009C08G18/698C08G18/4829C08G18/3206C08G18/6588C08G18/6677
Inventor 徐亚芳
Owner 格丽泰新材料科技(苏州)有限公司
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