Single-component polyurethane bonding adhesive and preparation method thereof

A technology of adhesive and polyurethane, which is applied in the field of adhesive, can solve problems such as cracking on the surface of the colloid, reduction of mechanical properties, pulverization, etc., and achieves good aging resistance, flame retardancy, excellent thixotropy, and extrudability good effect

Active Publication Date: 2019-05-07
ZHENGZHOU ZHONGYUAN SILANDE HIGH TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, because polyurethane adhesives are often exposed to the outdoor natural environment, after being eroded by light, heat, water, oxygen and microorganisms, they are prone to photodegradation, thermal oxygen degradation, hydrolysis, and microbial degradation, etc., which will cause their mechanical properties to deteriorate. A series of problems such as lowering, cracking on the surface of the colloid, pulverization, and strong odor

Method used

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  • Single-component polyurethane bonding adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] The first polyurethane prepolymer 300g, the second polyurethane prepolymer 70g, synthetic vegetable ester 150g, triisopropylphenyl phosphate 40g, 3-butyl-2-(1-ethylpentyl) oxazolidine 10g Add to the stirred tank, close the tank, vacuumize, and stir until the materials are evenly mixed;

[0073] Stirring was stopped, the vacuum valve was closed, the vacuum was vented with nitrogen, and 120 g of carbon black after dehydration and drying, 100 g of polyurethane grade calcium carbonate, 15 g of calcium oxide, and 18 g of fumed silica were added to the kettle, and stirred until uniform under vacuum;

[0074] Stop stirring, close the vacuum valve, release the vacuum with nitrogen, add 5 g of γ-(2,3-glycidoxy) propyltrimethoxysilane, 0.4 g of stannous octoate and 1.0 g of dimorphinyl diethyl ether In the kettle, vacuumize and stir until a one-component polyurethane adhesive is obtained, which is a black homogeneous fine paste, and the tank is used for equipment.

Embodiment 2

[0076] Add 350g of the first polyurethane prepolymer, 40g of the second polyurethane prepolymer, 70g of octyl epoxy stearate, 90g of phenyl sulfonate, 30g of tris(xylylene) phosphate, and 10g of methylbenzenesulfonyl isocyanate In the stirring kettle, close the lid of the kettle, vacuumize, and stir until the materials are evenly mixed;

[0077] Stop stirring, close the vacuum valve, release the vacuum with nitrogen, add 130g of carbon black, 80g of polyurethane grade kaolin, 25g of polyurethane grade calcium carbonate, 19g of calcium oxide, and 21g of polyamide wax into the kettle, vacuumize, and stir until uniform;

[0078] Stop stirring, close the vacuum valve, release the vacuum with nitrogen, add 5g of 3-mercaptopropyltrimethoxysilane, 0.5g of zinc isooctanoate, and 0.8g of triethylenediamine into the kettle, vacuumize and stir until one-component polyurethane is obtained Adhesive, which is a black homogeneous fine paste, used for tank equipment.

Embodiment 3

[0080] Add 300g of the first polyurethane prepolymer, 70g of the second polyurethane prepolymer, 156g of synthetic vegetable ester, 30g of triisopropylphenyl phosphate, 20g of aluminum hydroxide, and 12g of triethyl orthoformate into the stirring tank, close the tank Cover, vacuumize, and stir until the material is evenly mixed;

[0081] Stop stirring, close the vacuum valve, release the vacuum with nitrogen, add 120g of carbon black, 90g of polyurethane grade calcium carbonate, and 20g of polyurea into the kettle, vacuumize, and stir until uniform;

[0082] Stirring was stopped, the vacuum valve was closed, and the vacuum was released with nitrogen, and 5 g of γ-(2,3-epoxypropoxy)propyltrimethoxysilane, 0.4 g of bismuth naphthenate and 1.0 g of bismorphine diethyl ether were Add it into the kettle, vacuumize and stir until a one-component polyurethane adhesive is obtained, which is a black homogeneous fine paste, and can be used for equipment.

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Abstract

The invention provides a single-component polyurethane bonding adhesive and a preparation method thereof, and the single-component polyurethane bonding adhesive comprises the following components in parts by weight: 30-45 parts of a first polyurethane prepolymer, 5-15 parts of a second polyurethane prepolymer, 10-20 parts of a bonding adhesive plasticizer, 1-8 parts of a flame retardant, 2-5 partsof a water removal agent, 10-25 parts of carbon black, 10-20 parts of a polyurethane-grade filler, 1-5 parts of a thixotropic agent, 0.3-1 part of a coupling agent and 0.1-0.5 part of a bonding adhesive catalyst. The single-component polyurethane bonding adhesive is applied to glass, metal, ceramic, engineering plastics, porous materials and other various base materials, is good in adhesion, goodin extrusion property, excellent in thixotropy, high in strength after hardening, good in ageing resistance and flame retardancy, and has the characteristics of environmental protection and the like.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to an environmentally friendly, flame-retardant, aging-resistant single-component polyurethane adhesive and its preparation method Background technique [0002] One-component polyurethane adhesive is widely used in external and internal bonding and sealing of construction, automobile, rail transit and other industries due to its advantages of high elasticity, high strength, high shock resistance and wear resistance, and chemical corrosion resistance. [0003] In the traditional polyurethane adhesive preparation process, in order to achieve the goals of fast curing, good workability, and good storage, organic solvents are usually used to make the content of benzene, toluene, xylene, styrene, and formaldehyde in the product exceed the standard. VOC (volatile organic compounds, volatile organic compounds) content does not meet environmental protection requirements, and it is difficul...

Claims

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Application Information

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IPC IPC(8): C09J175/08C08G18/12C08G18/48C08G18/66C08G18/32
Inventor 张燕红陆瑜翀陈淼吕亚真李瑶张勇刘亚琼卜涛王华南龚洪洋
Owner ZHENGZHOU ZHONGYUAN SILANDE HIGH TECH CO LTD
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