Naphthol-modified phenolic resin, and its preparing method

The technology of phenolic resin and naphthol is applied in the field of naphthol modified phenolic resin and its preparation, which can solve the problems that phenolic resin does not have self-lubricating effect, mechanical wear of materials, and high friction coefficient, and achieves excellent mechanical properties and improved impact resistance. performance, the effect of improving the bending resistance

Inactive Publication Date: 2007-06-13
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, phenolic resin itself does not have self-lubricating effect. Compared with graphite, molybdenum disulfide and other solid lubricants with self-lubricating effect, the friction coefficient is very high, which is the main cause of mechanical wear of materials.

Method used

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  • Naphthol-modified phenolic resin, and its preparing method
  • Naphthol-modified phenolic resin, and its preparing method
  • Naphthol-modified phenolic resin, and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] a: Add 10 parts of naphthol to 100 parts of phenol under stirring condition, and make it dissolve in phenol;

[0031] b: After naphthol is fully dissolved, add 40 parts of solid paraformaldehyde under stirring conditions;

[0032] c: Add 10 parts of polysulfone under stirring condition;

[0033] d: Add 94 parts of solvent acetone in the reactor to dilute the resin, and add 2 parts of sodium pentachlorophenate;

[0034] e: Evenly impregnate 55 parts of glass fiber into the above resin after coupling treatment;

[0035] f: Dry the impregnating material so that the water and volatile matter content is 2-5%;

[0036] g: After-baking the toughened phenolic molding compound;

[0037] h: Cut the impregnating material into pellets on a pelletizer, and mold them into pieces.

Embodiment 2

[0039] a: Add 15 parts of naphthol to 100 parts of phenol under stirring condition, and make it dissolve in phenol;

[0040] b: After naphthol is fully dissolved, add 45 parts of solid paraformaldehyde under stirring conditions;

[0041] c: Add 20 parts of polysulfone under stirring condition;

[0042] d: Add 100 parts of solvent ethanol to the reactor to dilute the resin, and add 5 parts of sodium pentachlorophenate;

[0043] e: Coupling 60 parts of cotton fiber and evenly impregnating it in the above resin;

[0044] f: Dry the impregnating material so that the water and volatile matter content is 2-5%;

[0045] g: After-baking the toughened phenolic molding compound;

[0046] h: Cut the impregnating material into pellets on a pelletizer, and mold them into pieces.

Embodiment 3

[0048] a: Add 12 parts of naphthol to 100 parts of phenol under stirring condition, and make it dissolve in phenol;

[0049] b: After naphthol is fully dissolved, add 42 parts of solid paraformaldehyde under stirring conditions;

[0050] c: Add 15 parts of polysulfone under stirring condition;

[0051] d: Add 96 parts of solvent ethanol in the reactor to dilute the resin, and add 3 parts of sodium pentachlorophenate;

[0052] e: Evenly impregnate 60 parts of cotton cloth in the above resin after coupling treatment;

[0053] f: Dry the impregnating material so that the water and volatile matter content is 2-5%;

[0054] g: After-baking the toughened phenolic molding compound;

[0055] h: Cut the impregnating material into pellets on a pelletizer, and mold them into pieces.

[0056] In the above embodiments, the size of the diced impregnating material is about 15-25 mm or the orientation is 1600-1800 mm. The molding temperature is 160±5°C, the molding pressure is 20-40MPa, ...

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Abstract

This invention involves a naphthol modified phenolic resin and its preparation. The technical characteristics lie on the ratio of the components: 100 phenol, solid paraform 40 - 45, naphthol 10 - 15 and fiberglass 55 -60, polysulfone 10- 20, sodium pentachlorophenate 2 - 5, solvents 94 -100. Through the stir conditions adding naphthol into phenol, adding certain proportion of the solid paraform and polysulfone. In reactor adding solvents, resin diluted, and joined the sodium pentachlorophenate; fiberglass couple treated then uniform impregnation, after drying, postbaking, processing pelletizing and molding.

Description

Technical field: [0001] The invention relates to a naphthol-modified phenolic resin and a preparation method thereof. The main components are phenol, naphthol, solid paraformaldehyde, a catalyst and a toughening agent. This kind of phenolic molding compound can be used to prepare wear-resistant, high-temperature-resistant and insulating structural parts. Background technique: [0002] At present, in many fields, it is necessary to use phenolic resin. It can be used in the manufacture of molding compounds, laminated plastics, foamed plastics, cellular plastics, various composite materials, adhesives, coatings, ion exchange resins, etc. Phenolic plastics are cheap, easy to obtain raw materials, and have good comprehensive performance. [0003] However, phenolic resin itself does not have self-lubricating effect. Compared with solid lubricants with self-lubricating effect such as graphite and molybdenum disulfide, the friction coefficient is very high, which is the main reaso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/24C08J5/08
Inventor 齐暑华张剑黄英
Owner NORTHWESTERN POLYTECHNICAL UNIV
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