Reactive polyurethane hot melt adhesive for bonding aluminum plate and wood veneer and preparation method of reactive polyurethane hot melt adhesive

A polyurethane hot-melt adhesive and reactive technology, applied in the direction of polyurea/polyurethane adhesive, adhesive type, adhesive, etc., can solve the problems of affecting the bonding force, high crystallization shrinkage, and unstable bonding. Achieve the effect of improving work efficiency
CN111662671AInactive Publication Date: 2020-09-15BEIJING COMENS NEW MATERIALS
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
BEIJING COMENS NEW MATERIALS
Publication Date
2020-09-15
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a reactive polyurethane hot melt adhesive for bonding an aluminum plate and a wood veneer and a preparation method of the reactive polyurethane hot melt adhesive. The reactivepolyurethane hot melt adhesive is prepared from the following raw materials in parts by weight: 10-35 parts of isocyanate, 10-70 parts of aliphatic polyester diol, 20-50 parts of polyether diol, 5-20parts of aromatic polyester diol, 5-15 parts of thermoplastic resin, 0.05-0.5 part of an antioxidant, 0.01-0.1 part of a stabilizer, 0.05-0.5 part of a catalyst and 0.1-5 parts of an adhesion promoter. The adhesive has high initial adhesion and good later adhesion, can meet the adhesion requirement of an aluminum plate and a wood veneer, and can improve the working efficiency in the adhesion process.
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Description

technical field

[0001] The invention relates to the field of chemical adhesives, in particular to a reactive polyurethane hot-melt adhesive for bonding aluminum plates and veneers and a preparation method thereof. Background technique

[0002] Moisture-curing polyurethane (PUR) hot-melt adhesive has the characteristics of both hot-melt adhesives and reactive adhesives. Compared with traditional hot-melt adhesives, the application temperature is lower. Substrates containing active hydrogen, such as wood, ceramics, fabrics, etc., and smooth substrates such as metals, glass, plastics, rubber, etc. exhibit excellent bonding properties. At present, polyurethane hot melt adhesives are widely used in various industries and become one of the fastest-growing adhesive varieties. With excellent physical and chemical properties and environmental performance, reactive polyurethane hot-melt adhesives are rapidly replacing the previous solvent-based and water-based adhesives in woodworkin...

Claims

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