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Quick-setting two-component polyurethane structural adhesive as well as preparation method and application thereof

A two-component polyurethane and structural adhesive technology, which is applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve problems such as long service life, difficulty in meeting actual needs, and product explosion, and achieve improvement Toughness and adhesiveness, long balance operation time, and excellent fatigue resistance

Active Publication Date: 2020-09-25
HUBEI HUITIAN NEW MATERIALS STOCK CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional two-component polyurethane structural adhesives are difficult to meet the requirements of fast bonding and positioning
[0003] Usually, the reaction speed of two-component polyurethane structural adhesives can be increased by increasing the amount of catalyst. However, if the amount of catalyst is too large, the product will explode, and there is not enough operating time. If the amount of catalyst is too small, the body strength of the product will rise again. Slow, it is difficult to meet the requirements of fast positioning, so it is difficult to meet the actual demand only by adjusting the amount of catalyst
[0004] In addition, although CN201711342366 discloses a fast-curing two-component polyurethane structural adhesive with a long pot life and fast strength increase by adding a phosphoric acid retarder and an amine retarder catalyst, its pot life is generally long, and the retarder is used The mixed use of polymerization agent and catalyst will lead to unstable curing speed of the product, and the effect of rapid positioning cannot be achieved
CN110114380A discloses a two-component polyurethane adhesive prepared by compounding polyetheramine with a Sn-containing catalyst or a Bi-containing catalyst. Although it has fast curing speed, good adhesion characteristics and good durability, its Hot pressing treatment is still required to obtain the initial lap shear strength, and the adhesive body strength is low, which still cannot meet the requirements of fast positioning and high-strength structural bonding

Method used

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  • Quick-setting two-component polyurethane structural adhesive as well as preparation method and application thereof
  • Quick-setting two-component polyurethane structural adhesive as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0031] This embodiment provides a two-component polyurethane structural adhesive, including component A and component B, wherein component A is prepared from the following raw materials in parts by weight: 30 parts of castor oil, 5 parts of autocatalytic polyol (hydroxyl Value 712, relative molecular weight 394), 8 parts of liquid terpene resin (Guangzhou Songbao Chemical Co., Ltd.), 3 parts of coupling agent KH570, 0.1 part of thermal catalyst SA-1 (Evonik Chemical), 9 parts of carbon black N774 ( Cabot), 40 parts of nano calcium carbonate (Qingzhou Yuxin calcium industry), 2.4 parts of 4A molecular sieve and 2.5 parts of fumed silica H20 (Wacker). Component B is prepared from the following raw materials in parts by weight: 8 parts of plasticizer DINP, 30 parts of hydroxyl-terminated polybutadiene, 25 parts of MDI-100 (Wanhua Chemical), 10 parts of PM200 (Wanhua Chemical), 20 parts of nano calcium carbonate (Qingzhou Yuxin calcium industry), 1.2 parts of glass microspheres (p...

Embodiment 2

[0037] This embodiment provides a two-component polyurethane structural adhesive, including component A and component B, wherein component A is prepared from the following raw materials in parts by weight: 40 parts of castor oil, 10 parts of self-catalyzed polyol (hydroxyl Value 712, relative molecular weight 394), 6 parts of liquid terpene resin (Guangzhou Songbao Chemical Co., Ltd.), 2 parts of coupling agent KH570, 0.06 parts of thermal catalyst SA-1 (Evonik Chemical), 9.94 parts of carbon black N774 ( Cabot), 28 parts of nano-calcium carbonate, 3 parts of 4A molecular sieve, and 1 part of fumed silica H20 (Wacker). Component B is prepared from the following raw materials in parts by weight: 10 parts of plasticizer DINP, 20 parts of oil-modified polyester polyol PRIPLAST 3190, 25 parts of MDI-100 (Wanhua Chemical), 15 parts of PM200 (Wanhua Chemistry), 22 parts of nano-calcium carbonate, 1.5 parts of glass microspheres (particle size 10 μm), 3 parts of 4A molecular sieve an...

Embodiment 3

[0040] This embodiment provides a two-component polyurethane structural adhesive, including component A and component B, wherein component A is prepared from the following raw materials in parts by weight: 35 parts of castor oil, 15 parts of autocatalytic polyol (hydroxyl Value 712, relative molecular weight 394), 10 parts of liquid terpene resin (Guangzhou Songbao Chemical Co., Ltd.), 2.47 parts of coupling agent KH570, 0.03 parts of thermal catalyst SA-1 (Evonik Chemical), 7 parts of carbon black N774 ( Cabot), 25 parts of nano-calcium carbonate, 2 parts of 4A molecular sieve, and 3.5 parts of fumed silica H20 (Wacker). Component B is prepared from the following raw materials in parts by weight: 7 parts of plasticizer DINP, 25 parts of oil-modified polyester polyol PRIPLAST 3190, 30 parts of MDI-100 (Wanhua Chemical), 20 parts of PM200 (Wanhua Chemistry), 13 parts of nano-calcium carbonate, 1 part of glass microspheres (particle size 10 μm), 2 parts of 4A molecular sieve and...

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Abstract

The invention relates to a quick-setting two-component polyurethane structural adhesive as well as a preparation method and application thereof. The component A in the double-component polyurethane structural adhesive is prepared from castor oil, autocatalytic polyol, tackifying resin, a coupling agent, a catalyst, filler, a molecular sieve and silicon dioxide, and the component B is prepared fromtoughened polyol, a plasticizer, isocyanate, glass beads, filler, a molecular sieve and silicon dioxide. The bi-component polyurethane structure not only has enough operation time, but also can be quickly cured, is high in bonding strength and universality, does not flow during vertical surface sizing, can meet the sizing process of various complex structures, and is very suitable for quick bonding and positioning of automotive upholstery.

Description

technical field [0001] The invention relates to the field of two-component polyurethane structural adhesives, in particular to a fast-curing two-component polyurethane structural adhesive and a preparation method and application thereof. Background technique [0002] At present, automotive interior parts are mostly bonded with acrylate adhesives. However, acrylate adhesives will release small molecular substances during the curing process, resulting in unpleasant odors, high VOC content, and poor toughness. The two-component polyurethane contains a large number of polar groups, which can meet the environmental protection requirements of automotive interior parts. However, conventional two-component polyurethane structural adhesives are difficult to meet the requirements of fast bonding and positioning. [0003] Usually, the reaction speed of two-component polyurethane structural adhesives can be increased by increasing the amount of catalyst. However, if the amount of cata...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J11/04C09J11/08C09J11/06
CPCC09J175/14C09J11/04C09J11/08C09J11/06C08K2003/265C08K2201/011C08L45/00C08K13/04C08K3/04C08K3/26C08K7/26C08K7/20C08K7/24C08K5/5425
Inventor 杨志星杨足明李建林张洋韩胜利王翠花赵勇刚章锋
Owner HUBEI HUITIAN NEW MATERIALS STOCK CO LTD
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