Phenolic resin, preparation method thereof and phenolic resin product

A technology for phenolic resin and products, applied in the field of phenolic resin and its preparation, phenolic resin products, can solve the problems of easy occurrence of gel, endanger human health, physical blending, etc., and achieve the effect of improving flexibility

Pending Publication Date: 2022-03-18
杭摩新材料(嘉兴)有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But, the method that utilizes cashew nut oil modified phenolic resin generally has the following problems at present: (1) physical blending phenomenon occurs easily, thereby causes softening point low, high temperature stabi

Method used

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  • Phenolic resin, preparation method thereof and phenolic resin product
  • Phenolic resin, preparation method thereof and phenolic resin product
  • Phenolic resin, preparation method thereof and phenolic resin product

Examples

Experimental program
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Effect test

preparation example 1

[0048] Put 1000kg of preheated and melted phenol into the high-level metering tank with a special pump, and meter it into the reaction kettle, then add 200kg of cashew nut oil and 3kg of p-toluenesulfonic acid, raise the temperature to 150°C and keep it warm for 3 hours, then drop the temperature to 100°C 650kg of 37% formaldehyde solution was added dropwise within 1 hour. After the dropwise addition of formaldehyde was completed, it was kept for 1 hour, and then dehydrated to 150°C under normal pressure. Add 3.13 kg of barium hydroxide, stir for 30 minutes, vacuum dehydrate to 180°C (vacuum degree less than 0.09Mpa) and keep for 2 hours to obtain cashew nut oil modified phenolic resin A.

preparation example 2

[0050] Put 1000kg of preheated and melted phenol into the high-level metering tank with a special pump, and measure it into the reaction kettle, then add 210kg of cashew nut oil and 3.3kg of p-toluenesulfonic acid, raise the temperature to 130°C and keep it warm for 5 hours, then drop the Add 630kg of 37% formaldehyde solution, and complete the dropwise addition within 1 hour. After the dropwise addition of formaldehyde is completed, keep warm for 1 hour, and then dehydrate to 150°C under normal pressure. Add 3.44 kg of barium hydroxide, stir for 30 minutes, vacuum dehydrate to 180°C (vacuum degree less than 0.09Mpa) and keep for 2 hours to obtain cashew nut oil modified phenolic resin B.

preparation example 3

[0052] Put 1000kg of preheated and melted phenol into the high-level metering tank with a special pump, and measure it into the reaction kettle, then add 400kg of cashew nut oil and 5kg of dodecylbenzenesulfonic acid, heat up to 150°C and keep it for 4 hours, then cool down to 100°C Finally, 600kg of 37% formaldehyde solution was added dropwise, and the dropwise addition was completed within 1 hour. After the dropwise addition of formaldehyde, it was kept for 1 hour, and then dehydrated to 150°C under normal pressure. Add 1.2 kg of calcium hydroxide, stir for 30 minutes, vacuum dehydrate to 180°C (vacuum degree less than 0.09Mpa) and keep for 2 hours to obtain cashew oil modified phenolic resin C.

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Abstract

The invention discloses phenolic resin, a preparation method thereof and a phenolic resin product. The phenolic resin is generated by reaction of cashew nut oil modified phenolic resin and alpha-halogenated olefin under the action of quaternary ammonium salt and aqueous alkali. Compared with the prior art, the process is simple, and the wear resistance, the flexibility, the compatibility and the storage stability of the phenolic resin can be remarkably improved through the method for modifying the phenolic resin through the cashew nut oil and the allyl chloride.

Description

technical field [0001] The invention relates to the technical field of phenolic resins, in particular to a phenolic resin, a preparation method thereof, and a phenolic resin product. Background technique [0002] Phenolic resin (PF) has the characteristics of easy availability of raw materials, convenient synthesis, manufacturability, thermal performance and excellent electrical insulation performance, so it has been widely used in the fields of electronics, fireproof materials, refractory materials, aerospace vehicles and advanced composite materials. [0003] Traditional phenolic resins have poor heat resistance and high brittleness due to the easy oxidation of phenolic hydroxyl groups and methylene groups on the molecular structure, which largely limits their application in high-performance materials. Cashew nut oil is a product obtained by decarboxylation and purification after extracting natural cashew nut shells. Cashew nut oil is used to modify traditional phenolic re...

Claims

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Application Information

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IPC IPC(8): C08G8/36C08G8/28C08L61/14
CPCC08G8/36C08G8/28C08L61/14
Inventor 邓鑫周大鹏陈利王松松徐晨辉吴忆彤孟付良
Owner 杭摩新材料(嘉兴)有限公司
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