Modified thermoplastic phenolic resin and preparation method for same

A phenolic resin and thermoplastic technology, applied in the field of modified thermoplastic phenolic resin and its preparation, can solve the problems of complicated process and long production cycle, and achieve the effect of simple process, short production cycle and convenient storage

Active Publication Date: 2013-08-21
SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The modified phenolic resin prepared by this method has good heat resistance and fracture toughness, but the above-mentioned preparation method has complicated process and long production cycle

Method used

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  • Modified thermoplastic phenolic resin and preparation method for same
  • Modified thermoplastic phenolic resin and preparation method for same
  • Modified thermoplastic phenolic resin and preparation method for same

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preparation example Construction

[0022] The invention provides a kind of preparation method of modified thermoplastic phenolic resin, comprises the following steps:

[0023] dissolving polyetheretherketone in phenolic compounds to obtain a first solution;

[0024] The polycondensation reaction between the first solution and the aldehyde compound occurs under the catalysis of the catalyst to obtain a modified thermoplastic phenolic resin, and the polyetheretherketone accounts for the total mass of the polyether ether ketone, the phenolic compound and the aldehyde compound. 0.5% to 20%.

[0025] The present invention directly dissolves polyether ether ketone in phenolic compounds, which not only overcomes the insoluble defect of polyether ether ketone, but also does not require pretreatment such as sulfonation and chloromethylation of polyether ether ketone, so that polyetherether ether Ketones, phenolic compounds and aldehyde compounds undergo polycondensation reaction under the catalysis of the catalyst to o...

Embodiment 1

[0044] Pure resin polyether ether ketone injection molding pellets purchased from Nanjing Shousu Special Engineering Plastic Products Co., Ltd. were pulverized into 250-mesh powder.

[0045] Add 500g of phenol into a reaction vessel with a thermometer, a stirring device, and a reflux condenser, heat up to 170°C, add 30g of the polyetheretherketone powder, and stir to dissolve; when the polyetheretherketone is completely dissolved, cool down the reaction material To 60°C, add 5g of oxalic acid, 345g of formaldehyde solution with a mass concentration of 37%, raise the temperature to 100°C, react at a constant temperature for 3 hours, finish the reaction and carry out atmospheric distillation, heat to 170°C, and then distill under reduced pressure at 8000Pa to obtain 525g modified thermoplastic phenolic resin.

Embodiment 2

[0047] Pure resin polyether ether ketone injection molding pellets purchased from Nanjing Shousu Special Engineering Plastic Products Co., Ltd. were pulverized into 200-mesh powder.

[0048] Add 500g of phenol and 50g of cresol into a reaction vessel equipped with a thermometer, a stirring device, and a reflux condenser, heat up to 170°C, add 25g of the polyetheretherketone powder, and stir to dissolve; when the polyetheretherketone is completely dissolved Cool the reaction mass to 60°C, add 5g of oxalic acid and 361g of formaldehyde solution with a mass concentration of 37%, raise the temperature to 100°C, react at a constant temperature for 3 hours, finish the reaction and carry out atmospheric distillation, heat to 170°C, and then decompress under 8000Pa pressure Pressure distillation yielded 603g of modified thermoplastic phenolic resin.

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Abstract

The invention provides a preparation method for modified thermoplastic phenolic resin, which includes the steps: dissolving polyether-ether-ketone into a compound so as to obtain first liquor; and obtaining the modified thermoplastic phenolic resin by means of condensation polymerization of the first liquor and aldehyde compounds under the catalysis action of catalyst, wherein the weight of the polyether-ether-ketone occupies 0.5%-20% of the total weight of the polyether-ether-ketone, phenolic compounds and aldehyde compounds. The invention further provides the modified thermoplastic phenolicresin. The polyether-ether-ketone is directly dissolved into the phenolic compounds, so that the defect of insolubility of the polyether-ether-ketone is overcome, pretreatment such as sulfonation, chloromethylation and the like of the polyether-ether-ketone is not needed, and further the modified phenolic resin is obtained by means of condensation polymerization of the polyether-ether-keton, the phenolic compounds and the aldehyde compounds under the catalysis action of the catalyst.

Description

technical field [0001] The invention belongs to the technical field of phenolic resins, in particular to a modified thermoplastic phenolic resin and a preparation method thereof. Background technique [0002] Phenolic resin is a general term for resins produced by the reaction of phenols and aldehydes in the presence of catalysts. It is the earliest industrially produced polymer material. It has easy-to-obtain raw materials, low price, good dimensional stability, flame retardancy, With the advantages of acid resistance, mechanical properties, ablation resistance and electrical insulation properties, it is widely used in steel, automobile, machining, electronic appliances, aerospace and other industries. [0003] Although phenolic resin has good comprehensive properties, it has disadvantages such as high brittleness and poor toughness, and although phenolic resin can be used stably below 200°C, if the use temperature exceeds 200°C, it will obviously oxidize; 340°C~360°C Ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G8/38C08G8/04C08G8/02
Inventor 唐一林江成真刘卫董强
Owner SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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