Environmental-friendly double-component polyurethane adhesive

A two-component polyurethane and adhesive technology, applied in the field of polyurethane, can solve the problems of long-term curing instability, poor aging resistance, unfavorable environmental protection, etc., and achieve adjustable opening time, high stability, and long storage period Effect

Active Publication Date: 2017-11-03
SHANDONG INOV NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most adhesives on the market contain solvents, which have a strong smell and are not conducive to environ

Method used

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  • Environmental-friendly double-component polyurethane adhesive
  • Environmental-friendly double-component polyurethane adhesive
  • Environmental-friendly double-component polyurethane adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Component A: Weigh 30 kg of polyoxypropylene diol with a molecular weight of 1000, 75 kg of polyoxypropylene triol with a molecular weight of 5000, 145 kg of polyoxypropylene tetraol with a molecular weight of 600, and polyoxypropylene with a molecular weight of 300 in a 1000L reactor. Propylene triol 45kg, thickener fumed silica (AEROSIL R202) 1.5kg, silane coupling agent (KH550) 3kg, calcium carbonate powder 295kg, catalyst dibutyltin laurate and triethylene diammonium (33% concentration) 2.4kg , 2.4kg of water, dispersed at 200rpm for 100min, and discharged;

[0025] Component B: Weigh 150kg and 141kg of diphenylmethylene diisocyanate and polymethylene polyphenylisocyanate respectively, 9kg of dibutyl phthalate, disperse at 200rpm for 20min, and control the NCO% at 25-30 %,Discharge;

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Abstract

The invention relates to an environmental-friendly double-component polyurethane adhesive, and belongs to the technical field of polyurethane. The adhesive is prepared from a component A and a component B in a mass ratio of 1:(5-1), wherein the component A is prepared from the following raw materials in percentage by mass: 3-6% of polypropylene oxide diol, 12-20% of polypropylene oxide triol, 15-25% of polypropylene oxide tetrol, 5-10% of a chain extender, 0.3-2% of a coupling agent, 30-60% of packing, 0.2-0.5% of a thickening agent, 0.05-0.8% of a catalyst and 0.2-0.8% of water; the component B is prepared from the following raw materials in percentage by mass: 30-50% of diphenyl methylene diisocyanate, 20-47% of polymethylene poly-phenyl isocyanate and 3-5% of a plasticizer. The environmental-friendly double-component polyurethane adhesive provided by the invention is mainly used for binding substrates and is applicable to adhesion of stainless steel plates, aluminum alloy plates, inorganic calcium silicate boards and rock wool plates, the component A and the component B are mixed according to a ratio and are subjected to chemical cross-linking reactions, and excellent properties of high initial viscosity, high curing speed and good binding properties are achieved.

Description

technical field [0001] The invention relates to an environment-friendly two-component polyurethane adhesive, which belongs to the technical field of polyurethane. Background technique [0002] Polyurethane adhesives refer to adhesives containing carbamate and / or isocyanate groups in the molecular chain. Polyurethane adhesives are reactive adhesives. During the preparation or bonding process, polyisocyanate compounds or The prepolymer containing NCO end groups chemically reacts with active hydrogen compounds (such as containing hydroxyl groups, amine groups or water, etc.). At present, most adhesives on the market contain solvents, which have a strong odor and are not conducive to environmental protection. In addition, there are problems such as poor aging resistance and unstable curing for a long time. Contents of the invention [0003] The purpose of the present invention is to provide an environment-friendly two-component polyurethane adhesive with high initial tack and...

Claims

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Application Information

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IPC IPC(8): C09J175/08C09J11/04C09J11/06C08G18/48C08G18/76C08G18/66C08K13/02C08K3/26C08K3/36C08K5/544C08K5/12
CPCC08G18/4816C08G18/4825C08G18/4829C08G18/6674C08G18/7657C08G18/7671C08K3/26C08K3/36C08K5/12C08K5/544C08K13/02C08K2003/265C09J11/04C09J11/06C09J175/08
Inventor 杜孝林李明友唐国涛念以亭董国鹏
Owner SHANDONG INOV NEW MATERIALS CO LTD
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