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Tungsten dioxide modified phenolic resin and production methods of resin, phenolic moulding plastic and automobile switch covers

A technology of phenolic molding compound and phenolic resin, which is applied in the preparation of automobile switch covers, the preparation of tungsten dioxide modified phenolic resin, and the preparation of phenolic molding compound. It can solve the problems of large thermal deformation and poor heat resistance, and achieve operational Convenience and easy processing

Inactive Publication Date: 2017-07-07
ZHEJIANG YUETUO NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition of epoxy resin and nitrile rubber can improve the interface bonding between phenolic resin and inorganic fibers and fillers, thereby effectively improving the mechanical properties of the sample, but the product still has problems such as poor heat resistance and large thermal deformation.

Method used

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  • Tungsten dioxide modified phenolic resin and production methods of resin, phenolic moulding plastic and automobile switch covers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: 300g phenol, 160g37% formaldehyde solution, 1.5g oxalic acid are added in the four-necked bottle, and oil bath is heated to 80 ℃; Add 1.5g WS while stirring 2 The nano-sheet material is uniformly dispersed by ultrasonic treatment; keep the temperature at 80°C, ultrasonically react for 1h, stop ultrasonication; add 52g of 37% formaldehyde solution and 0.9g of oxalic acid, raise the temperature to 92°C, and react at constant temperature for 1h 20min, Stop heating; use NaOH aqueous solution to adjust the pH to neutral, lower the temperature to 60°C, and then vacuumize; when the material temperature reaches 90°C, quickly discharge the material to obtain a brown solid product, which is WS after crushing 2 The mass fraction is 0.5% powdered phenolic resin. The above resin is pulverized, mixed with glass fiber, mold release agent, carbon black and filler, extruded and granulated by twin-screw to prepare phenolic molding compound, and injected by an injection mold...

Embodiment 2

[0030] Embodiment 2: Similar to Example 1, the difference is that 300g phenol is used as the benchmark amount, and 3.0g WS is added 2 . Other steps are identical with embodiment 1, obtain WS 2 The phenolic resin with a mass fraction of 1.0% is then post-processed to prepare an automobile switch cover sample.

Embodiment 3

[0031] Embodiment 3: Similar to Example 1, the difference is that 300g phenol is used as the benchmark amount, and 4.5gWS is added 2 . Other steps are identical with embodiment 1, obtain WS 2 The phenolic resin with a mass fraction of 1.5% is then post-processed to obtain a sample of an automobile switch cover.

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Abstract

The invention belongs to the field of new materials and relates to tungsten dioxide modified phenolic resin. The tungsten dioxide modified phenolic resin comprises the following components in parts by weight: (1) 300 parts of phenol; (2) 100-250 parts of a formaldehyde aqueous solution; (3) 0.1-5 parts of tungsten dioxide; and (4) 1-10 parts of an acid catalyst. The prepared powdered phenolic moulding plastic has the characteristics of high heat conduction, excellent mechanical properties and simplicity in post processing, can be applied to production of automobile switch covers; meanwhile, WS2 is also capable of accelerating solidification of the phenolic resin in the processes of extrusion and injection moulding of the moulding plastic; the ammonia-free solidification of the phenolic resin is achieved.

Description

technical field [0001] The invention belongs to the field of new materials, and relates to a tungsten disulfide modified phenolic resin, a preparation method of a tungsten dioxide modified phenolic resin, a preparation method of a phenolic molding compound and a preparation method of an automobile switch cover. Background technique [0002] Today, with the rapid development of the automobile industry, the ever-increasing safety, comfort and environmental protection standards put forward new requirements for the development of automobile switch covers. Since automobile switch covers often work in humid and high-temperature environments, the phenolic resin curing agent in the switch cover (six Methylenetetramine) will release residual ammonia gas, corrode the copper sheet on the switch cover attachment, and form a layer of rust film on the copper sheet, which will eventually lead to the failure of the ignition and start of the car, causing various accidents. Therefore, it is p...

Claims

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Application Information

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IPC IPC(8): C08G8/10C08K7/00C08K3/22C08K3/30C08L61/06C08K7/14C08K3/04
CPCC08G8/10C08K3/04C08K3/22C08K3/30C08K7/00C08K7/14C08K2003/2258C08K2003/3009C08K2201/011C08L2201/08C08L61/06
Inventor 寿国军
Owner ZHEJIANG YUETUO NEW MATERIAL TECH CO LTD
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