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Phenolic resin adhesive

A phenolic resin, environmentally friendly phenolic resin technology, applied in the direction of adhesives, non-polymer adhesive additives, non-polymer organic compound adhesives, etc., can solve the problem of high price and achieve the effect of good mechanical properties

Inactive Publication Date: 2019-06-18
新沂景尚建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production and use of phenolic resin will be subject to certain restrictions due to the content of formaldehyde. New low-pollution environmentally friendly formaldehyde is produced, and then a formaldehyde-free environmentally friendly new phenolic resin is produced. The new phenolic resin has good mechanical properties and heat resistance. , Strong cohesive force, good chemical stability, high heat resistance, small shrinkage when hardened, high bond strength, etc. Its disadvantage is that the price is slightly higher, and it can be used according to needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Send 50% of the total amount of styrene into the chemical reaction kettle, raise the temperature to 40°C, start the mixer to stir, and then slowly add 22% of the total amount of environmentally friendly phenolic resin, 10% of the total amount of furfuryl alcohol, and A total amount of 11% hexamethylenetetramine was mixed and stirred for 1.2 hours; cooled to normal temperature and continued to stir, while stirring, the total amount of 3% ammonia and 4% of the total amount of sodium hydroxide aqueous solution Send it into a chemical reactor, stir and react for 0.3 hours to get the finished product.

Embodiment 2

[0013] Send 51% of the total amount of styrene into the chemical reaction kettle, raise the temperature to 41°C, start the mixer to stir, and then slowly add 21% of the total amount of environmentally friendly phenolic resin, 10% of the total amount of furfuryl alcohol, and A total amount of 11% hexamethylenetetramine was stirred for 1.1 hours after mixing; the temperature was lowered to normal temperature and continued to stir, while stirring, the total amount was 3% of ammonia water and 4% of the total amount of sodium hydroxide aqueous solution Send it into a chemical reaction kettle, stir and react for 0.35 hours to get the finished product.

Embodiment 3

[0015] Put 52% of the total amount of styrene into the chemical reaction kettle, raise the temperature to 42°C, start the mixer to stir, and then slowly add 20% of the total amount of environmentally friendly phenolic resin, 10% of the total amount of furfuryl alcohol, and A total amount of 11% hexamethylenetetramine was mixed and stirred for 1.0 hour; cooled to normal temperature and continued to stir, while stirring, the total amount of 3% ammonia and 4% sodium hydroxide solution Send it into a chemical reaction kettle, stir and react for 0.4 hours to get the finished product.

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PUM

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Abstract

The invention discloses a phenolic resin adhesive and a preparation method thereof, and belongs to the field of chemical building materials. The raw materials for producing the adhesive comprise the following materials in weight percentage: 20-22 percent of environment-friendly phenolic resin, 50-52 percent of styrene, 10 percent of furfuryl alcohol, 11 percent of methenamine, 3 percent of ammonium hydroxide, and 4 percent of a sodium hydroxide aqueous solution. A product is prepared through mixing at different temperatures, is a universal type adhesive, is prepared by using the environment-friendly phenolic resin as the main raw material, has good mechanical performance, heat-resistant quality, little shrinkage during curing, good insulativity, weather resistance, water resistance, ageingresistance, film-forming property, and shock resistance, and is mainly applied to the bonding of wood, laminated materials, brake shoes, grinding wheels, light bulbs and lamp holders, hardboards andsolid resistance.

Description

Technical field: [0001] The product of the invention belongs to the field of chemical building materials, and in particular relates to a phenolic resin adhesive and a preparation method thereof. Background technique: [0002] Phenolic resin is a resin made by polycondensation of phenol and formaldehyde under catalyst conditions, neutralization and washing with water. Different catalysts can be used to obtain thermosetting and thermoplastic resins. Phenolic resin has good resistance to weak acids and weak alkalis. , mechanical properties and heat resistance properties, widely used in anti-corrosion engineering, adhesives, flame retardant materials, grinding wheel manufacturing and other industries. An important use of phenolic resin is to prepare adhesives. A single phenolic resin is brittle. Unmodified phenolic resin adhesives are mainly used for bonding wood, foam plastics and other porous materials, and can also be used to make plywood and precision casting sand molds. of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J4/06C09J11/06
Inventor 朱云利
Owner 新沂景尚建材有限公司