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Nylon fiber reinforced injection phenolic molding compound and its preparation method

A technology of phenolic molding compound and nylon fiber, applied in the field of phenolic molding compound, can solve the problems of unsatisfactory flexural strength of molding compound, and achieve the effects of improving interfacial compatibility, reducing water absorption, and enhancing cohesion.

Active Publication Date: 2016-07-27
桂林金格电工电子材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this invention, the molding compound obtained has better impact strength and bending strength through the addition of sisal fiber, and the molding compound obtained has better toughness and insulation performance through the addition of glass fiber; The bending strength of the obtained molding compound is not ideal, not more than 100Mpa

Method used

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  • Nylon fiber reinforced injection phenolic molding compound and its preparation method
  • Nylon fiber reinforced injection phenolic molding compound and its preparation method
  • Nylon fiber reinforced injection phenolic molding compound and its preparation method

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 nylon fiber, 3 parts of magnesium hydroxide, 1 part of calcium stearate;

[0046] 2) Take the silicon micropowder and titanate coupling agent equivalent to 0.5% of its dosage and place it in a ball mill tank for ball milling, control the speed of the ball mill tank 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 p...

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 nylon fiber with a length of 1-10 mm, and 5 parts of magnesium hydroxide , 2 parts of zinc stearate, 5 parts of iron red;

[0063] 2) Put calcite and aluminate coupling agent equivalent to 4% of its dosage in a ball mill jar for ball milling, control the speed of the ball mill jar to 50rpm, and the ball milling time is 80min;

[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 nylon fiber-reinforc...

Embodiment 3

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

[0080] 2) Take calcium carbonate and silane coupling agent equivalent to 8% of its dosage and place it in a ball mill jar for ball milling, control the speed of the ball mill jar to 30rpm, and the ball milling time is 60min;

[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 diameter of 4-6 mm to obtain ...

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Abstract

The invention discloses nylon fiber reinforced injectable phenolic moulding plastic and a preparation method of the nylon fiber reinforced injectable phenolic moulding plastic. Raw materials for preparing the phenolic moulding plastic mainly include novolac resin, hexamethylenetetramine, an inorganic filler and nylon fiber. The preparation method of the phenolic moulding plastic comprises the following steps: (1) weighing all the raw materials for later use; (2) placing the inorganic filler and a coupling agent into a ball mill or a jar mill for uniformly ball milling, wherein the dosage of the coupling agent is 0.5-10wt% of that of the inorganic filler, and the inorganic filler is one or a combination of two or more of aluminum hydroxide, silica powder, calcite, talc, calcium carbonate, glass beads, kaolin and pottery clay powder; (3) grinding hexamethylenetetramine, and then evenly mixing with the inorganic filler after surface treatment and other raw materials; (4) putting the mixed materials into a twin-screw extruder for extrusion; (5) grinding extrudate after cooling to obtain the nylon fiber reinforced injectable phenolic moulding plastic. The phenolic moulding plastic prepared by the method is higher in mechanical properties and lower in water absorption.

Description

technical field [0001] The invention relates to a phenolic molding compound, in particular to a nylon 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 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. It is widely used in electronics, Electric 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 materials are mos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/06C08L77/00C08K13/06C08K9/04C08K9/06C08K3/22C08K3/02C08K3/26C08K3/34C08K7/20C08K5/17C08J5/04
Inventor 钟立松蒋耿杰陈武荣朱恒斌
Owner 桂林金格电工电子材料科技有限公司
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