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Environment-friendly phenolic resin adhesive and preparation method thereof

A phenolic resin glue, phenolic resin technology, applied in the direction of adhesives, adhesive additives, aldehyde/ketone condensation polymer adhesives, etc., can solve the problems of slow curing speed, high curing temperature, threats to the health of users, etc. Low cost, high bond strength, good for environmental protection

Inactive Publication Date: 2016-03-23
SUZHOU GAIDE FINE MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Phenolic resin adhesives have excellent mechanical properties, electrical insulation, molding processability, and flame retardancy, and these properties can be well balanced with each other, and the cost is low, but at the same time, phenolic resin adhesives also have A series of problems such as slow curing speed and high curing temperature
In addition, phenolic resin adhesives continuously release phenol and formaldehyde during the application process, which poses a threat to the health of users

Method used

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  • Environment-friendly phenolic resin adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] An environment-friendly phenolic resin adhesive, in parts by weight, comprises the following components:

[0032] 30 parts of phenolic resin, 10 parts of isocyanate,

[0033] 2 parts of fly ash, 1 part of toughening agent, 1 part of coupling agent,

[0034] 1 part of diluent, 1 part of curing accelerator.

[0035] Its preparation method comprises the following steps:

[0036] (1) Mix phenolic resin and isocyanate into the autoclave, heat up to 40°C, and keep warm for 20 minutes to obtain the mixed material;

[0037] (2) Mix fly ash and coupling agent, add cyclohexane as a solvent, reflux at 50°C for 2 hours, cool the reacted mixture to room temperature, and then filter to obtain modified fly ash;

[0038] (3) mix the mixed material obtained in step (1), the modified fly ash obtained in step (2), and toughening agent, diluent, curing accelerator, add in the autoclave, at 50 ℃, keep warm for 40min, Continue to heat up to 70°C, keep it warm for 1 hour, and cool down to...

Embodiment 2

[0040] An environment-friendly phenolic resin adhesive, in parts by weight, comprises the following components:

[0041] 50 parts of phenolic resin, 30 parts of isocyanate,

[0042] 5 parts of fly ash, 2 parts of toughening agent, 1.5 parts of coupling agent,

[0043] 3 parts of diluent, 3 parts of curing accelerator.

[0044] Its preparation method comprises the following steps:

[0045] (1) Mix phenolic resin and isocyanate into the autoclave, heat up to 50°C, and keep warm for 30 minutes to obtain the mixed material;

[0046] (2) Mix fly ash and coupling agent, add cyclohexane as a solvent, reflux at 70° C. for 5 hours, cool the reacted mixture to room temperature, and then filter to obtain modified fly ash;

[0047] (3) mix the mixed material obtained in step (1), the modified fly ash obtained in step (2), and toughening agent, diluent, curing accelerator, add in the autoclave, at 60 ℃, keep warm for 60min, Continue to heat up to 90°C, keep warm for 2 hours, and cool t...

Embodiment 3

[0049] An environment-friendly phenolic resin adhesive, in parts by weight, comprises the following components:

[0050] 35 parts of phenolic resin, 15 parts of isocyanate,

[0051] 3 parts of fly ash, 1.2 parts of toughening agent, 1.1 parts of coupling agent,

[0052] 1.5 parts of diluent, 1.5 parts of curing accelerator.

[0053] Its preparation method comprises the following steps:

[0054] (1) Mix phenolic resin and isocyanate into the autoclave, heat up to 45°C, and keep warm for 22 minutes to obtain the mixed material;

[0055] (2) Mix fly ash and coupling agent, add cyclohexane as a solvent, reflux at 55°C for 3h, cool the reacted mixture to room temperature, and then filter to obtain modified fly ash;

[0056] (3) mix the mixed material obtained in step (1), the modified fly ash obtained in step (2), and toughening agent, diluent, curing accelerator, add in the autoclave, at 55 ℃, keep warm for 45min, Continue to heat up to 75°C, keep it warm for 1.2h, and cool do...

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Abstract

The invention discloses an environment-friendly phenolic resin adhesive which is prepared from, by weight, 30-50 parts of phenolic resin, 10-30 parts of isocyanate, 2-5 parts of fly ash, 1-2 parts of thickener, 1-1.5 parts of a coupling agent, 1-3 parts of diluent and 1-3 parts of curing accelerant. The invention further discloses a preparation method of the adhesive. The adhesive is high in bonding capacity, high in mechanical strength, good in high temperature resistance and heat resistance and low in curing temperature. The adhesive releases little formaldehyde and phenol, does not release toxic matter in the preparation method, is harmless to human bodies and facilitates environmental protection.

Description

Technical field: [0001] The invention relates to the technical field of adhesives, in particular to an environment-friendly phenolic resin adhesive. Background technique: [0002] Adhesive is a kind of natural or synthetic, organic or inorganic substance that can connect two or more parts or materials together through the adhesion and cohesion of the interface, also called adhesive , customarily referred to as glue. In short, an adhesive is a substance that can bind adherends together through bonding. Adhesives are composed of bonding substances, curing agents, toughening agents, diluents, fillers and modifiers. [0003] Phenolic resin adhesive is a kind of adhesive. In the late 1920s and early 1930s, phenolic resin adhesives began to be widely used in the production of boiling water and weather-resistant plywood. Phenolic resin adhesives have excellent mechanical properties, electrical insulation, molding processability, and flame retardancy, and these properties can be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J161/06C09J11/04C09J11/06C09J11/08
CPCC09J161/06C08L2201/08C08L2205/03C08L2205/035C09J11/04C09J11/06C09J11/08C08L63/10C08L75/04C08L83/04C08L91/00C08K9/06C08K7/24C08K5/29
Inventor 李晓明
Owner SUZHOU GAIDE FINE MATERIALS CO LTD