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Carbon fiber reinforced injected phenolic moulding plastic and preparation method thereof

A technology of phenolic molding compound and carbon fiber, applied in the field of phenolic molding compound, can solve the problems of difficulty in knowing the water absorption of unsaturated polyester molding compound, incomparable performance, etc., and achieves improved interface compatibility, enhanced cohesion, The effect of increased bending strength

Active Publication Date: 2014-07-16
GUILIN ELECTRICAL EQUIP SCI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although unsaturated polyester molding compound and phenolic molding compound belong to thermosetting molding compound, unsaturated polyester molding compound is a composite material prepared with unsaturated polyester resin as the base material combined with other fillers as the main raw material, while phenolic molding compound The molding compound is prepared with phenolic resin as the base material combined with other fillers as the main raw material. The base materials selected by the two are not the same, so the performance is not comparable; in addition, it is difficult to know from the above invention What is the water absorption of saturated polyester molding compound

Method used

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  • Carbon fiber reinforced injected phenolic moulding plastic and preparation method thereof
  • Carbon fiber reinforced injected phenolic moulding plastic and preparation method thereof
  • Carbon fiber reinforced injected phenolic moulding plastic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] 1) Weigh the following components for later use: 100 parts of novolac resin (that is, thermoplastic phenolic resin, the same below), 10 parts of hexamethylenetetramine, 80 parts of silicon micropowder of 400-600 mesh, and 2-5 mm in length 25 parts of carbon fiber, 3 parts of magnesium hydroxide, 1 part of calcium stearate;

[0046] 2) Take silicon micropowder and titanate coupling agent equivalent to 0.5% of its dosage and place it in a ball mill jar for ball milling, control the speed of the ball mill jar to 10 rpm, and the ball milling time to 10 min;

[0047] 3) Take hexamethylenetetramine and pulverize it to 80 meshes, and then mix it evenly with the surface-treated silicon micropowder and other components;

[0048] 4) put the mixed material into a twin-screw extruder for extrusion, the barrel temperature of the twin-screw extruder is 75-90°C, and the screw rotation speed is 80rpm;

[0049] 5) After the extruded material is cooled to normal temperature, it is pulveri...

Embodiment 2

[0062] 1) Weigh the following components for later use: 100 parts of novolac resin, 15 parts of hexamethylenetetramine, 50 parts of calcite of 600-800 mesh, 45 parts of carbon fiber with a length of 1-10 mm, 5 parts of magnesium hydroxide, Zinc stearate 2 parts, iron red 5 parts;

[0063] 2) Put calcite and aluminate coupling agent equivalent to 6% of its dosage in a ball milling tank for ball milling, control the rotating speed of the ball milling tank to 50 rpm, and the ball milling time is 80 min;

[0064] 3) Take hexamethylenetetramine and pulverize it to 100 meshes, then mix it evenly with surface-treated calcite and other components;

[0065] 4) put the mixed material into a twin-screw extruder for extrusion, the barrel temperature of the twin-screw extruder is 90-100°C, and the screw rotation speed is 90rpm;

[0066] 5) After the extruded material is cooled to normal temperature, it is pulverized into irregular powder with a diameter of 2-5 mm to obtain the carbon fibe...

Embodiment 3

[0079] 1) Weigh the following components by weight percentage for later use: 100 parts of novolak resin, 20 parts of hexamethylenetetramine, 30 parts of calcium carbonate of 100-300 mesh, 55 parts of carbon fiber with a length of 5-10 mm, calcium oxide 1 part, 5 parts of zinc stearate;

[0080] 2) Take calcium carbonate and a silane coupling agent equivalent to 3% of its dosage and place it in a ball milling tank for ball milling, control the rotating speed of the ball milling tank to 30 rpm, and the ball milling time is 60 min;

[0081] 3) take hexamethylenetetramine and pulverize it to 80 meshes, then mix it evenly with surface-treated calcium carbonate and other components;

[0082] 4) put the mixed material into a twin-screw extruder for extrusion, the barrel temperature of the twin-screw extruder is 75-85°C, and the screw rotation speed is 90rpm;

[0083] 5) After the extruded material is cooled to normal temperature, it is pulverized into irregular powder with a diamete...

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Abstract

The invention discloses a carbon fiber reinforced injected phenolic moulding plastic and a preparation method thereof. The phenolic moulding plastic is mainly prepared from novolac resin, hexamethylenetetramine, inorganic fillers and carbon fibers. The preparation method comprises the following steps: (1) weighing the raw materials for later use; (2) performing uniform ball-milling on the inorganic fillers and a coupling agent in a ball mill or a ball-milling tank, wherein the usage amount of the coupling agent accounts for 0.5wt%-10wt% that of the inorganic fillers, and the inorganic fillers are selected from one or combination of two or more of aluminum hydroxide, silica powder, calcite, talcum, calcium carbonate, glass beads, kaolin and argil powder; (3) grinding hexamethylenetetramine and uniformly mixing with the inorganic fillers and other raw materials subjected to surface treatment to obtain a mixture; (4) extruding the mixture in a double-screw extruder to obtain an extruded material; and (5) cooling and grinding the extruded material to obtain the phenolic moulding plastic. The phenolic moulding plastic prepared by adopting the method is relatively high in mechanical property and relatively low in water absorptivity.

Description

technical field [0001] The invention relates to a phenolic molding compound, in particular to a carbon fiber reinforced injection type phenolic molding compound and a preparation method thereof. Background technique [0002] Phenolic molding compound is a composite material prepared with phenolic resin as the base material and other fillers as the main raw materials. It has excellent comprehensive properties such as low price, heat resistance, stable product size, good electrical insulation, and high mechanical properties. Widely used in electronics, electrical appliances, automobiles and other industries [2] . With the continuous development of the economy, the demand for high-performance materials continues to increase, and the performance requirements for phenolic molding compounds are also getting higher and higher, and higher requirements are put forward for the mechanical properties and heat resistance of this type of materials. [0003] In the prior art, reinforcing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/06C08K13/06C08K9/04C08K3/36C08K7/06C08K3/04C08K3/22C08K5/098C08K3/34C08K9/06C08K3/26C08K7/20C08J5/04B29C47/92B29C48/92
CPCB29B7/46B29B7/72B29B7/7461B29B7/90B29B9/06B29B9/12B29B9/14B29C48/40B29C48/92B29C2948/9259B29C2948/92638B29C2948/92704
Inventor 钟立松王明军覃家波沈锡仙
Owner GUILIN ELECTRICAL EQUIP SCI RES INST
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