One-component polyurethane adhesive with normal temperature rapid solidification and preparation method thereof

A polyurethane adhesive and fast curing technology, applied in the field of polyurethane adhesives, can solve the problems that the product no longer has use value, gel, etc., and achieves good roller coating stability, high bonding strength, and fast curing rate. Effect
CN106978126AInactive Publication Date: 2017-07-25佛山市顺德区巴德富实业有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
佛山市顺德区巴德富实业有限公司
Publication Date
2017-07-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a one-component polyurethane adhesive with normal temperature rapid solidification and a preparation method thereof, and belongs to the technical field of polyurethane adhesives. The adhesive comprises the following formula components in parts by mass: 20-50 parts of polyol A, 5-30 parts of polyol B, 0-60 parts of isocyanate A, 0-60 parts of isocyanate B, 0.01-1 part of a catalyst, and 0.1-3 parts of an auxiliary agent; the usage amounts of isocyanate A and isocyanate B are not zero at the same time; the viscosity of the adhesive at a normal temperature is 3000-30000mPa.s, and the content of NCO group is 7-25%. Polyol whose functionality is 3 is used, so that average functionality of the adhesive is higher than 2; during solidification, net crosslinking is generated, the solidification rate is faster, the bonding strength is higher, and solidification time is further shortened by using an activator; the product has the characteristics of low viscosity at a normal temperature, good stability of roller coating, and the like.
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Description

technical field

[0001] The invention relates to a polyurethane adhesive, in particular to a one-component polyurethane adhesive that is rapidly cured at room temperature and a preparation method thereof, belonging to the technical field of polyurethane adhesives. Background technique

[0002] In recent years, with the improvement of people's awareness of environmental protection, the preparation and application of adhesives are becoming more and more water-based and solvent-free, and solvent-free adhesives are more economical. There are two types of solvent-free polyurethane adhesives: two-component and one-component. One-component polyurethane adhesives are more convenient to prepare and use than two-component polyurethane adhesives, and one-component liquid polyurethane adhesives are more convenient to use than one-component polyurethane hot melt adhesives.

[0003] The synthesis of polyurethane adhesive is a gradual polymerization process. Under a certain monomer ratio, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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