Polyurethane structural adhesive as well as preparation method and application thereof

A structural adhesive, polyurethane technology, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve the problems of low bonding strength, and achieve the effects of fast curing rate, simple preparation method and convenient operation.

Active Publication Date: 2020-06-23
上海汉司实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a polyurethane structural adhesive to solve the existing adhesives proposed in the above background technology. Before bonding, the surface of the SMC composite material needs to be treated to ensure effective bonding. low problem

Method used

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  • Polyurethane structural adhesive as well as preparation method and application thereof
  • Polyurethane structural adhesive as well as preparation method and application thereof
  • Polyurethane structural adhesive as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A polyurethane structural adhesive, comprising A component and B component, wherein the B component is a curing agent, and the A component includes the following raw materials: grease polyol, polyether polyol, polyester polyol, Solvent, molecular sieve, filler, catalyst; Wherein, described grease polyol is common castor oil (8kg) and hydrogenated modified castor oil Albodur941 VP (4kg) of Nanjing Jinhaiwei Chemical Industry Co., Ltd.; Described polyether polyol is CP450 (10kg) and BP-33 (5kg); Described polyester polyol is XCPA-320 (6kg) and Capa3031 (3kg), and described solvent is dimethyl sulfoxide (2kg), ethyl acetate (0kg); The filler is barium sulfate (57kg), silicon dioxide (2kg), and the catalyst is one or more of organometallic catalysts or tertiary amine catalysts, specifically the model of the American Air Chemical Company is T-12 Dibutyltin dilaurate product (0.05kg) and organic bismuth catalyst (0.04kg) of Changzhou Kairui Chemical Technology Co., Ltd. are u...

Embodiment 2

[0053] Compared with Example 1, except in the B component, the polymethylene polyphenyl polyisocyanate is Suprasec 2211 (0kg) and B1011 (30kg), and the preparation method of the polyurethane prepolymer (30kg) Yes: Weigh 0129M (20kg) and WANNATE 1635 (50kg), add common castor oil (15kg) and mix evenly, then add vacuum refined polyol 3MCPG (5kg) and CP450 (10kg) while stirring. Vacuumize the prepolymerization reaction, measure the isocyanate group content to reach the end point, then add phosphoric acid (0.02kg) and mix evenly after cooling down to obtain the polyurethane prepolymer. The vacuum refining conditions are: control the vacuum degree from -0.095 to -0.098MPa, The temperature is 105°C to 110°C, and the vacuum degree of the prepolymerization reaction is -0.090 to -0.098MPa. The inorganic powder is nano-active calcium (28kg) and silicon dioxide (2kg), and the molecular sieve is 3A molecular sieve (10kg), and the others are the same as in Example 1.

Embodiment 3

[0055] A polyurethane structural adhesive, comprising A component and B component, wherein the B component is a curing agent, and the A component includes the following raw materials: grease polyol, polyether polyol, polyester polyol, Solvent, molecular sieve, filler, catalyst; Wherein, described grease polyol is common castor oil (5kg) and hydrogenated modified castor oil Albodur941 VP (8kg) of Nanjing Jinhaiwei Chemical Industry Co., Ltd.; Described polyether polyol is CP450 (10kg) and BP-33 (6kg); Described polyester polyol is XCPA-320 (4kg) and Capa3031 (3kg), and described solvent is dimethyl sulfoxide (0kg), ethyl acetate (2kg); The filler is barium sulfate (55kg), silicon dioxide (2kg), and the catalyst is one or more of organometallic catalysts or tertiary amine catalysts, specifically the model of the American Air Chemical Company is T-12 Dibutyltin dilaurate product (0.05kg) and organic bismuth catalyst (0.04kg) of Changzhou Kairui Chemical Technology Co., Ltd. are u...

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Abstract

The invention relates to the field of chemical engineering, and particularly discloses a polyurethane structural adhesive and a preparation method and application thereof, the polyurethane structuraladhesive comprises a component A and a component B, and the component B is a curing agent; wherein the component A comprises the following raw materials: grease polyol, polyether polyol, polyester polyol, a solvent, a molecular sieve, a filler and a catalyst; wherein the solvent is selected from any one or more of dimethylformamide, dimethyl sulfoxide, ethyl acetate or cyclohexanone. The preparedpolyurethane structural adhesive is high in bonding strength, by adding a small amount of solvent into the component A, an SMC composite material base material does not need to be treated at all before the adhesive is used, and the problems that an existing adhesive needs to treat the surface of an SMC composite material before bonding to achieve effective bonding and is low in bonding strength are solved; the preparation method provided by the invention is simple, and the prepared polyurethane structural adhesive is high in curing rate after sizing, so that the production efficiency is greatly improved.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a polyurethane structural adhesive and its preparation method and application. Background technique [0002] With the advancement and development of science and technology, people have higher and higher requirements for materials. Among them, SMC (Sheet molding compound, sheet molding compound) composite material, as a kind of FRP, has excellent electrical insulation properties, mechanical properties, thermal stability, chemical corrosion resistance, and the application range of the prepared products is quite wide. For example, due to its light weight, high rigidity and impact resistance, SMC composite materials can replace metals and are more environmentally friendly. They are suitable for auto parts and can provide at least the same impact resistance as steel, while being lighter than metals, reducing the cost of automobiles. It can also be widely used in composite cable brack...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04C09J11/04C08G18/12C08G18/36C08G18/66C08G18/40C08G18/48C08G18/42
CPCC08G18/12C08G18/36C08G18/4018C08G18/42C08G18/48C08G18/6629C08K2003/3045C08K2003/329C09J11/04C09J175/04C08K13/04C08K3/32
Inventor 邓雅林孝蔚吴海平向劲松
Owner 上海汉司实业有限公司
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