High conductivity polyphenylene sulfide composite material and preparation method thereof

A technology of polyphenylene sulfide and composite materials, applied in the field of conductive polymer composite materials, can solve the problems of no improvement and elimination of electrical conductivity and various performances, overall compatibility, and reduced uniform stability, etc., to achieve good mechanical properties, Improved conductivity and low viscosity

Inactive Publication Date: 2019-09-03
DONGGUAN HUAYING NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in its patented ingredients, the final ratio of the inorganic phases, such as reinforcing fillers and conductive fillers in the conductive masterbatch, accounts for about 40-50% of the overall polycarbonate composite material. Although the mechanical strength is sufficient, the overall compatibility, The uniform stability is reduced, but it tends to be balanced through repeated trials and proportional adjustments, and the actual limitations in electrical conductivity and various performances have not been improved and eliminated.

Method used

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  • High conductivity polyphenylene sulfide composite material and preparation method thereof

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preparation example Construction

[0039] Further combining the above composition contents, the present invention also proposes a preparation method of the above materials, comprising the following steps:

[0040] S10, putting the metal powder in the ethanol dispersion of silane coupling agent at 35.5-50.5°C, stirring for 24-48 hours, separating the solid phase powder to obtain the surface-modified metal powder;

[0041] S20, weigh 50-85 parts by weight of PBT resin, 20-50 parts of surface-modified metal powder, and 0.1-0.6 parts of antioxidant for mixing; send the mixed raw materials into the extruder , carry out melt extrusion and granulation, the set temperature of the extruder is 220-260° C., and the screw speed is 350-500 rpm to obtain the conductive masterbatch.

[0042] S30, then add 40-70 parts of polyphenylene sulfide resin, 20-30 parts of porous conductive ceramics, 20-40 parts of conductive masterbatch, 5-15 parts of paramagnetic material, 2-8 parts of toughening agent, and 3 parts of compatibilizer ...

Embodiment 1

[0049] S10, the preparation of conductive masterbatch: put the iron-nickel alloy powder of mass ratio 1:1 in the ethanol dispersion liquid (volume ratio 1:2) of vinyltriethoxysilane (KH-151) of 2 times volume, keep 37 Stir in a water bath for 24 hours, then separate the solid and liquid to get the solid phase powder, which is the surface modified metal powder;

[0050] S20, take by weight 80 parts of PBT resin, 40 parts of surface-modified metal powder, 0.5 parts of antioxidant 1010 mixed raw materials into the extruder, melt extrusion, granulation, extruder The set temperature is 230-260°C, the screw speed is 400 rpm, and the conductive masterbatch is obtained through melt extrusion and granulation by an extruder.

[0051] S30, take 60 parts by weight of PPS resin, 20 parts of porous conductive ceramics (alumina doped with 15% ytterbium oxide, average particle size 2mm), 20 parts of conductive masterbatch, 10 parts of zinc ferrite Powder, 5 parts of ethylene-ethyl acrylate c...

Embodiment 2

[0054] S10, the preparation of conductive masterbatch: the ethanol dispersion (volume ratio 1:2) that the iron of mass ratio 1:1, nano-silver alloy powder are mixed in 2 times volume KH-171 and KH-792 equal ratio, keep 40 Stir in a water bath for 24 hours, then separate the solid and liquid to get the solid phase powder, which is the surface modified metal powder;

[0055] S20, take 70 parts by weight of PBT resin, 30 parts of surface modified metal powder, 0.3 parts of antioxidant 168, 0.3 parts of antioxidant 626 and mix the raw materials into the extruder for melt extrusion , granulation, the set temperature of the extruder is 230-260 ° C, the screw speed is 420 rpm, and the conductive masterbatch is obtained through melt extrusion and granulation of the extruder.

[0056] S30, take by weight 60 parts of PPS resin, 30 parts of porous conductive ceramics (titanium diboride), 30 parts of conductive masterbatch, 15 parts of zinc ferrite powder, 6 parts of core-shell type MBS a...

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Abstract

The invention discloses a high conductivity polyphenylene sulfide composite material. The composite material comprises: 40-70 parts of polyphenylene sulfide resin, 20-30 parts of porous conductive ceramic, 20-40 parts of conductive masterbatch, 5-15 parts of a paramagnetic material, 2-8 parts of a toughening agent, 3-6 parts of a compatibilizer and 0.5-2.5 parts of a coupling agent. Specifically,the conductive masterbatch comprises, by mass, 50-85 parts of polybutylene terephthalate, 20-50 parts of surface modified metal powder and 0.1-0.6 part of an antioxidant. According to the high conductivity polyphenylene sulfide composite material, the PBT matrix resin of the conductive masterbatch has low viscosity and high fluidity, and tends to distribute on the surface during injection molding,thereby further combining the internal porous conductive ceramic and paramagnetic material powder to form a stable conductive network with electromagnetic coupling and enhancing the conductive effect. When the adding proportion of the masterbatch is 15%, that is, the adding amount of the conductive filler is about 5%, the resistance can reach 103 ohm, and the composite material can maintain goodmechanical properties.

Description

technical field [0001] The invention relates to the technical field of conductive polymer composite materials, in particular to a high-conductivity polyphenylene sulfide composite material and a preparation method thereof. Background technique [0002] The plastic-based conductive composite material combines the conductivity of metal (that is, a certain voltage is applied to both ends of the material, and a current flows through the material) and various characteristics of plastic resin (that is, the material molecule is composed of many small, repeated structures. composed of units). The conductive fillers commonly used in plastics mainly include carbon-based materials, metals and metal oxides. Other organic antistatic agents or conductive polymer materials have low conductivity efficiency. Among them, carbon-based conductive fillers are easy to obtain raw materials, light in weight, It is not easily oxidized and easy to form a conductive network, so it is the most commonl...

Claims

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Application Information

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IPC IPC(8): C08L81/02C08L67/02C08K13/06C08K9/06C08K3/08C08K7/24C08K3/22
CPCC08L81/02C08L2205/035C08K2201/001C08K2201/01C08K2201/003C08L67/02C08K13/06C08K9/06C08K3/08C08K7/24C08K3/22
Inventor周宇贺鹏勇贺朋波张小林陈维维
OwnerDONGGUAN HUAYING NEW MATERIAL CO LTD