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High-strength anti-aging single-component modified sealant for bonding rubber and plastic composite materials and preparation method of high-strength anti-aging single-component modified sealant

A composite material and high-strength technology, applied in the direction of adhesives, adhesive types, adhesive additives, etc., can solve the problems of low tear strength and elongation at break, difficult production control, and high viscosity of prepolymers. Improve the tear strength, reduce the difficulty of production control, and produce strong controllable effects

Active Publication Date: 2022-03-11
SHANDONG NORTH MODERN CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the MS polymer of Kaneka in Japan was developed the earliest, with a wide range of bonding, but slow curing and low bonding strength; SPU contains more urethane bonds, high tensile and shear strength, but tear strength and elongation at break The elongation rate is low, and the viscosity of the prepolymer is high, and the production control is difficult; the comprehensive performance of silicone modified polyether (STP) is relatively good, but the mechanical strength cannot be compared with polyurethane sealant, and it is only used for general requirements. and seal

Method used

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  • High-strength anti-aging single-component modified sealant for bonding rubber and plastic composite materials and preparation method of high-strength anti-aging single-component modified sealant
  • High-strength anti-aging single-component modified sealant for bonding rubber and plastic composite materials and preparation method of high-strength anti-aging single-component modified sealant
  • High-strength anti-aging single-component modified sealant for bonding rubber and plastic composite materials and preparation method of high-strength anti-aging single-component modified sealant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A high-strength aging-resistant single-component modified sealant for bonding rubber and plastic composite materials, consisting of the following raw materials: 40 kg of silane-terminated polyether polyurethane polymer, 10 kg of silane-modified acrylate polymer, the first plasticizer 15kg agent, 1kg water remover, 1kg adhesion promoter, 25kg filler, 0.5kg stabilizer and 0.05kg first catalyst;

[0058] The silane-terminated polyether polyurethane polymer is composed of the second polyether polyol, isocyanate, the second plasticizer, the terminal active hydrogen silane-terminated agent and the second catalyst according to the mass ratio of 40:15:20:2:0.01 composition;

[0059] The second polyether polyol is polyoxypropylene ether DL-3000D;

[0060] Described isocyanate is diphenylmethane diisocyanate;

[0061] The second plasticizer is chlorinated paraffin;

[0062] The terminal active hydrogen silane capping agent is 3-aminopropyltriethoxysilane;

[0063] The second ...

Embodiment 2

[0075] A high-strength aging-resistant single-component modified sealant for bonding rubber and plastic composite materials, consisting of the following raw materials: 30 kg of silane-terminated polyether polyurethane polymer, 5 kg of silane-modified acrylate polymer, the first plasticizer 30kg agent, 3kg water remover, 3kg adhesion promoter, 45kg filler, 1.5kg stabilizer and 0.5kg first catalyst;

[0076] The silane-terminated polyether polyurethane polymer is composed of the second polyether polyol, isocyanate, the second plasticizer, the terminal active hydrogen silane-terminated agent and the second catalyst according to the mass ratio of 60:25:35:3:0.2 composition;

[0077] The second polyether polyol is polyoxypropylene ether DL-4000D;;

[0078] Described isocyanate is toluene diisocyanate;

[0079] The second plasticizer is phenylmethylphenyl phosphate;

[0080] The terminal active hydrogen silane capping agent is 3-aminopropyltrimethoxysilane;

[0081] The second c...

Embodiment 3

[0093] A high-strength aging-resistant single-component modified sealant for bonding rubber and plastic composite materials, consisting of the following raw materials: 32 kg of silane-terminated polyether polyurethane polymer, 8 kg of silane-modified acrylate polymer, the first plasticizer 18kg agent, 1.5kg water remover, 1.5kg adhesion promoter, 30kg filler, 0.8kg stabilizer and 0.1kg first catalyst;

[0094] The silane-terminated polyether polyurethane polymer is composed of the second polyether polyol, isocyanate, the second plasticizer, the terminal active hydrogen silane-terminated agent and the second catalyst according to the mass ratio of 45:18:25:2.5:0.05 composition;

[0095] The second polyether polyol is polyoxypropylene ether DL-2000D;

[0096] The isocyanate is obtained by mixing isophorone diisocyanate and hexamethylene diisocyanate according to a mass ratio of 1:1;

[0097] The second plasticizer is obtained by mixing diphenyl-isooctyl phosphate and diisodecy...

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Abstract

The invention discloses a high-strength anti-aging single-component modified sealant for bonding rubber and plastic composite materials and a preparation method thereof, and relates to the technical field of high-molecular bonding material sealants, the high-strength anti-aging single-component modified sealant is composed of the following raw materials: a silane-terminated polyether polyurethane polymer, a silane modified acrylate polymer, a first plasticizer, a water removal agent, a bonding accelerator, a filler and the like, the high-strength anti-aging single-component modified sealant for bonding the rubber and plastic composite materials has excellent bonding adaptability, and has good bonding property on low-surface-energy base materials such as the rubber and plastic composite materials; the product provided by the invention has very good strength performance, the shear strength can reach about 5 MPa, the tensile strength can reach about 7 MPa, the notch tear strength can reach more than 28 N / mm, and the elongation at break can reach more than 600%, which reach and even exceed the performance index of polyurethane automobile windshield glass glue.

Description

technical field [0001] The invention relates to the technical field of polymer adhesive sealants, in particular to a high-strength, aging-resistant, single-component modified sealant for bonding rubber and plastic composite materials and a preparation method thereof. Background technique [0002] With the lightweight development of automobiles and equipment in the military and civilian fields, various lightweight materials such as EPDM, PET, glass fiber or carbon fiber reinforced PP, PE, PC and other rubber-plastic composite or resin-based composite materials are widely used. Adhesive bonding is the most suitable and convenient connection method between non-metallic materials and traditional metal materials or non-metallic materials. The mechanical properties of PU adhesive are relatively high, the shear strength can reach above 4MPa, and the tensile strength can reach above 6MPa. However, due to the low surface energy of rubber and plastic composite materials, PU adhesive c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/08C09J133/04C09J11/08C09J11/04C09J11/06
CPCC09J175/08C09J11/08C09J11/04C09J11/06C08K2003/2227C08L2201/08C08L33/04C08L91/06C08K7/24C08K5/544C08K3/22C08K3/04Y02E10/50
Inventor 杜厚俊张健伟王玉东于伟强陈晓理温静
Owner SHANDONG NORTH MODERN CHEM IND
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