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Shell-core polymer containing phenolic resin and use thereof

A phenolic resin and polymer technology, applied in the field of phenolic resin preparation, can solve the problems of difficulty in realization and increase equipment investment, and achieve the effects of reducing industrial production costs, wide application, excellent moldability and rapid curing.

Inactive Publication Date: 2004-12-29
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method is not easy to realize in phenolic resin manufacturers, this is because the boiling point of butadiene monomer is low, and the polymerization of nitrile latex needs to be carried out at low temperature or under pressure, which increases equipment investment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] First, add 120g of deionized water, 1.0g of sodium lauryl sulfate, 0.3g of dodecyl mercaptan, 0.1g of potassium persulfate, 39.2g of butyl acrylate, and 0.8g of divinylbenzene into the reactor, and stir evenly , while stirring, the temperature was raised to 70°C; when the conversion rate of the monomer reached 95%, after cooling temporarily, 57.0g of acrylonitrile, 2.0g of acrylic acid, and 1.0g of hydroxyacrylate were added at one time, and the reaction was continued at 70°C until the monomer When the conversion rate reaches 95%, it is cooled to end the reaction. In the second step, phenol, formaldehyde, and catalyst are added to the reactor, stirred and heated to 80°C, reacted for 4 hours, and vacuum dehydrated to obtain a phenolic resin containing a core-shell polymer.

Embodiment 2

[0041] First, add 120g of deionized water, 1.0g of sodium lauryl sulfate, 0.3g of dodecyl mercaptan, 0.1g of potassium persulfate, 39.2g of butyl acrylate, and 0.8g of divinylbenzene into the reactor, and stir evenly , while stirring, the temperature was raised to 75°C; when the conversion rate of the monomer reached 95%, after cooling temporarily, 57.0g of acrylonitrile, 2.0g of acrylic acid, and 1.0g of hydroxyacrylate were added and the temperature was raised to 75°C, and the reaction was continued until the monomer When the conversion rate reaches 95%, it is cooled to end the reaction. In the second step, phenol, formaldehyde, and catalyst are added to the reactor, stirred and heated to 100°C, reacted for 5 hours, and vacuum dehydrated to obtain a phenolic resin containing a core-shell polymer.

Embodiment 3

[0043] First, add 120g of deionized water, 1.0g of sodium lauryl sulfate, 0.3g of dodecyl mercaptan, 0.1g of potassium persulfate, 39.2g of butyl acrylate, and 0.8g of divinylbenzene into the reactor, and stir evenly , heat up to 75°C while stirring; when the conversion rate of the monomer reaches 95%, after cooling temporarily, add 57.0g of acrylonitrile, heat up to 75°C, continue the reaction until the conversion rate of the monomer reaches 95%, cool down, end reaction. In the second step, phenol, formaldehyde, and catalyst are added to the reactor, stirred and heated to 100°C, reacted for 5 hours, and vacuum dehydrated to obtain a phenolic resin containing a core-shell polymer.

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PUM

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Abstract

The phenolic resin containing core-shell polymer may be used in resin grinding wheel, braking friction sheet, molded phenolic plastic and fiber reinforced phenolic resin composite material. The present invention provides the preparation process of molded plastic with the resin. Especially, the molded plastic includes phenolic resin with core-shell polymer, linear phenolic resin, hexamethine tetramine, lower molecular weight polyolefin, cure promoter, stuffing, and short cut fiber or mixed organic-inorganic fiber. The method of the present invention is economic, simple and suitable for industrial production.

Description

technical field [0001] The invention relates to a preparation method of phenolic resin. More specifically, it relates to a preparation method and application of a phenolic resin containing a core-shell polymer. Background technique [0002] Phenolic resin has unique excellent properties such as heat resistance, flame retardancy and low smoke generation, electrical insulation, high mechanical properties and good dimensional stability, and has a significant performance-price ratio advantage. Therefore, it is widely used in machinery, electronics, Transportation, building materials, defense and other fields, such as adhesives, friction elements, industrial and decorative laminates, molding compounds, and fiber-reinforced composites. [0003] Although phenolic resin has excellent properties such as unique heat resistance, flame retardancy, electrical insulation, high mechanical properties and good dimensional stability, it is impact resistant due to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/40C08G8/28
Inventor 刘胜平邓诗峰
Owner EAST CHINA UNIV OF SCI & TECH
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