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One-component strong adhesive and its preparation method and application

An adhesive, one-component technology, used in adhesives, adhesive types, polyurea/polyurethane adhesives, etc. The effect of rigidity, initial viscosity improvement, and crystallinity improvement

Active Publication Date: 2021-01-01
GUANGZHOU RETAN NEW MATERIALS & HI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But usually the initial tack is low, which does not meet the requirements of high initial tack of contact adhesives

Method used

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  • One-component strong adhesive and its preparation method and application
  • One-component strong adhesive and its preparation method and application
  • One-component strong adhesive and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] This embodiment provides a one-component strong adhesive prepared from the following raw materials in weight percentage:

[0041] 30% polyether and polyester blend polyol Kosin polyol-1000, 30% isocyanate Suprasec2020, 5% phenolic resin Kosin resin-2#, 10% polybutadiene modified epoxy resin, 15% butanone and 10% ethyl acetate.

[0042] The preparation method is:

[0043] Pour the isocyanate Suprasec 2020 into a stirred tank and heat it to 80°C, add 20% polyether and polyester blend polyol Kosin polyol-1000, control the reaction temperature between 70-90°C, react for 2 hours, add 10% Polybutadiene modified epoxy resin was reacted for 1 hour to obtain modified isocyanate prepolymer.

[0044] Add the remaining polyether and polyester blend polyol Kosinpolyol-1000 to the above-mentioned modified isocyanate prepolymer, seal and react for 2 hours, lower the temperature of the material to 50°C, add methyl ethyl ketone and ethyl acetate and stir evenly, seal and react for 0.5...

Embodiment 2

[0046] This embodiment provides a one-component strong adhesive prepared from the following raw materials in weight percentage:

[0047] 30% polyether and polyester blend polyol Kosin polyol-1000, 30% isocyanate Suprasec2020, 8% polybutadiene modified epoxy resin, 5% phenolic resin Kosin resin-2#, 5% The phenolic resin Kosinresin-3#, 12% methyl ethyl ketone and 10% ethyl acetate.

[0048] The preparation method is:

[0049] Pour the isocyanate Suprasec 2020 into a stirred tank and heat it to 80°C, add 20% polyether and polyester blend polyol Kosin polyol-1000, control the reaction temperature between 70-90°C, react for 2 hours, add 10% Polybutadiene modified epoxy resin was reacted for 1 hour to obtain modified isocyanate prepolymer.

[0050] Add the remaining polyether and polyester blended polyol Kosin polyol-1000 to the above isocyanate prepolymer, seal and react for 2 hours, lower the material temperature to 50°C, add methyl ethyl ketone and ethyl acetate and stir evenly...

Embodiment 3

[0052] This embodiment provides a one-component strong adhesive prepared from the following raw materials in weight percentage:

[0053]35% polyether and polyester blend polyol, 30% isocyanate Suprasec 2020, 5% phenolic resin Kosin resin-2#, 5% phenolic resin Kosin resin-3#, 5% polybutadiene Modified epoxy resin, 10% methyl ethyl ketone and 10% ethyl acetate.

[0054] The preparation method is:

[0055] Pour the isocyanate Suprasec 2020 into a stirred tank and heat it to 80°C, add 25% polyether and polyester blend polyol Kosin polyol-1000, control the reaction temperature between 70-90°C, react for 2 hours, add 5% Polybutadiene modified epoxy resin was reacted for 1 hour to obtain modified isocyanate prepolymer.

[0056] Add the remaining polyether and polyester blended polyol Kosin polyol-1000 to the above isocyanate prepolymer, seal and react for 2 hours, lower the material temperature to 50°C, add methyl ethyl ketone and ethyl acetate and stir evenly, seal and react for 0...

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Abstract

The invention relates to a one-component strong adhesive. The one-component strong adhesive comprises the following raw materials in percent by weight: 20-40% of polyether and polyester blend polyol,20-40% of isocyanate, 5-10% of reactive tackifying resin, 5-10% of polybutadiene modified epoxy resin and 15-35% of a solvent. The adhesive further has relatively strong initial adhesion, final adhesion and heat resistance, can be applied to PVC / density board adhesion and beech / beech adhesion and has a very wide prospect.

Description

technical field [0001] The invention relates to the field of adhesives, in particular to a one-component strong adhesive and its preparation method and application. Background technique [0002] At present, the contact adhesives on the market are mainly pressure-sensitive adhesives. Including acrylate polymer type, vinyl ester polymer type, neoprene type and styrenic polymer, etc. Such adhesives are generally not suitable for structural bonding because of their low heat, weather and chemical resistance. The structural adhesives on the market are generally reactive adhesives, including polyurethane polymers, epoxy polymers and acrylate polymers, etc., which have better heat resistance, weather resistance, water resistance and chemical resistance, and ultimately have higher viscosity. connection strength. But usually the initial tack is low, which does not meet the requirements of high initial tack of contact adhesives. Contents of the invention [0003] Based on this, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/08C09J175/06C09J175/14C08G18/69C08G18/48C08G18/42C08G18/12C08G18/54
CPCC08G18/12C08G18/4018C08G18/42C08G18/48C08G18/698C09J175/06C09J175/08C09J175/14C08G18/40
Inventor 张辉
Owner GUANGZHOU RETAN NEW MATERIALS & HI TECH CO LTD
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