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Polyphenylene sulfide composite material and preparation method thereof

A technology of polyphenylene sulfide and composite materials, applied in the field of polymer materials, can solve the problems of poor fluidity, low mechanical strength, and large loss of magnetic properties of composite materials.

Inactive Publication Date: 2011-09-14
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large amount of ferrite added (usually the total ratio is greater than 80%), the fluidity of the composite material is too poor, resulting in difficulties in injection molding processing, excessive loss of magnetic properties, uneven magnetic properties, and low mechanical strength. It is far from meeting the requirements of the market, especially restricting the application of injection molding magnets in some fields with relatively complex structures and high magnetic requirements.

Method used

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  • Polyphenylene sulfide composite material and preparation method thereof
  • Polyphenylene sulfide composite material and preparation method thereof
  • Polyphenylene sulfide composite material and preparation method thereof

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preparation example Construction

[0026] The embodiment of the present invention also provides the preparation method of above-mentioned polyphenylene sulfide composite material, and its technological process is as follows figure 1 shown. The method comprises the steps of:

[0027] S1: Weigh each component according to the formula of the above-mentioned polyphenylene sulfide composite material;

[0028] S2: mixing each component to obtain a polyphenylene sulfide composite material precursor;

[0029] S3: extruding the polyphenylene sulfide composite material precursor to obtain the polyphenylene sulfide composite material.

[0030] Specifically, in step S1 of the preparation method of the above-mentioned polyphenylene sulfide composite material, the ratio and types of the ferrite magnetic powder, polyphenylene sulfide, cyclic polyester, and coupling agent are all in the above-mentioned In order to save space, the detailed description is omitted. Among them, before weighing each component, it is preferable ...

Embodiment 1

[0038] Polyphenylene sulfide composite material parts by weight formulation components are as follows, see Table 1 at the same time:

[0039] The density is 3.0g / cm 3 74 parts of isotropic ferrite magnetic powder, 14 parts of PPS resin with molecular weight of 10000, 8 parts of cyclic polyester with molecular weight of 1000, 1 part of KH-5701, 0.25 part of antioxidant, 0.25 part of lubricant, 0.25 part of dispersant and 0.25 part of anti-ultraviolet agent.

[0040] The preparation method of the polyphenylene sulfide composite material comprises the following steps:

[0041] S11: Weigh each component according to the above formula;

[0042] S12: adding each component into an internal mixer and fully mixing for 15 minutes at a mixing temperature of 280° C. to obtain a polyphenylene sulfide composite material precursor;

[0043] S13: Put the polyphenylene sulfide composite material precursor into a twin-screw extruder to melt and knead, extrude, and granulate. The screw diamet...

Embodiment 2

[0045] Polyphenylene sulfide composite material parts by weight formulation components are as follows, see Table 1 at the same time:

[0046] The density is 6.0g / cm 3 80 parts of anisotropic ferrite magnetic powder, 12 parts of PPS resin with a molecular weight of 1000, 6 parts of cyclic polyester with a molecular weight of 1000, 1 part of KH-5701, 0.05 parts of antioxidant, 0.45 parts of lubricant, and 0.3 parts of dispersant And 0.2 parts of anti-ultraviolet agent.

[0047] The preparation method of the polyphenylene sulfide composite material comprises the following steps:

[0048] S21: Weigh each component according to the above formula;

[0049] S22: adding each component into an internal mixer and fully mixing for 18 minutes at a mixing temperature of 235° C. to obtain a polyphenylene sulfide composite material precursor;

[0050] S23: Put the polyphenylene sulfide composite material precursor into a twin-screw extruder to melt and knead, extrude, and granulate. The d...

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Abstract

The invention discloses a polyphenylene sulfide composite material and a preparation method thereof. The polyphenylene sulfide composite material comprises the following formula components in part by weight: 72 to 92 parts of ferrite magnetic powder, 5 to 18 parts of polyphenylene sulfide, 2 to 8 parts of cyclic polyester and 0.5 to 2 parts of coupling agent. By interaction of the components in aproper content range in the extrusion process, the polyphenylene sulfide composite material has good processing flow property and mechanical performance and stable magnetic performance. The product can be obtained by mixing and extruding the components according to the formula in the preparation method of the polyphenylene sulfide composite material; and the preparation method is simple in process, low in cost, low in equipment requirement and suitable for industrialized production.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a polyphenylene sulfide composite material and a preparation method thereof. Background technique [0002] Magnetic devices are the main supporting products of various electronic products. They are widely used in daily necessities, home appliances, computers, communication equipment, automobiles, and national defense industries. They are the important material basis of modern science and technology. Magnetic devices are generally processed by sintering or bonding with magnetic powder. Among them, the bonded magnetic devices that can be injection molded have the advantages of high mechanical strength, good mass production, accurate manufacturing dimensions, easy molding of heterogeneous parts, and recyclable use. , has developed rapidly in recent years. [0003] Bonded ferrite magnetic particles using polyphenylene sulfide as a carrier combine the advantages...

Claims

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Application Information

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IPC IPC(8): C08L81/02C08L67/02C08K3/22C08K5/5425B29C47/92B29C48/92
CPCB29C48/40B29C48/875B29C48/92B29C2948/92514B29C2948/92704B29C2948/92895B29C2948/92904
Inventor 徐东徐永杨海灵
Owner SHENZHEN KEJU NEW MATERIAL
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