Conductive enhanced PC and PBT resin composition and preparation method thereof

A technology of PBT resin and conductive enhancement, which is applied in the field of polymer material processing, can solve the problems of poor impact resistance, cost increase, and impact performance decline of composite materials, and achieve good electrical conductivity and impact performance.

Active Publication Date: 2016-09-21
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the impact resistance of the composite material is relatively poor, about 100J / m, and the addition of such a large amount of carbon fibers greatly increases the cost; another example is that the patent of CN1445282 discloses a conductive PA / PPE resin composition and its However, since PA / PPE is a completely incompatible system, the sea-island structure can only be formed through reaction compatibilization, and the improvement of electrical conductivity can only be achieved by increasing the content of conductive carbon black, while the increase of carbon black content It will definitely reduce the impact performance

Method used

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  • Conductive enhanced PC and PBT resin composition and preparation method thereof
  • Conductive enhanced PC and PBT resin composition and preparation method thereof
  • Conductive enhanced PC and PBT resin composition and preparation method thereof

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Embodiment 1-4

[0027] The raw materials used are:

[0028] PC resin, the weight average molecular weight is 3.0×10 4 g / mol;

[0029] PBT resin, intrinsic viscosity is 1.0dl / g;

[0030] MBS copolymer, particle diameter is 300nm, butadiene weight percentage is 60%;

[0031] Surface-modified conductive carbon black with an average size of about 100nm and -COOH on the surface; for example, Ketjenblack EC-600JD produced by Akzo Nobel.

[0032] Each component was weighed according to the weight percentage shown in Table 1, and then the thermoplastic resin composition was prepared by the following method:

[0033] Step 1, taking each component according to parts by weight;

[0034] Step 2, fully mixing PBT resin, MBS copolymer and conductive carbon black in a high-speed mixer for 10 minutes to obtain a mixture;

[0035] In step 3, the PC resin enters from the first feed port of the twin-screw extruder, and the premix obtained in step 2 enters from the second feed port, and is melted and extrud...

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Abstract

The invention relates to a conductive enhanced PC and PBT resin composition and a preparation method thereof. The composition is prepared from, by weight, 50%-60% of PC resin, 30%-45% of PBT resin, 3%-7% of MBS copolymer and 0.3%-3% of conductive carbon black. The preparation method of the resin composition is characterized by comprising the following steps that the PC resin is added into a first feeding mouth of an extruder, and the PBT resin, the MBS copolymer and the conductive carbon black are added to a second feeding mouth of the extruder. The prepared resin composition has a stable bicontinuous phase structure, carbon black can be selectively dispersed on the phase interface, on the premise that the bicontinuous phase structure is combined with phase interface dispersion, carbon black can form a conductive path at low content, a percolation threshold value of the carbon black is decreased, and the composition has the good conductive performance and impact performance.

Description

technical field [0001] The invention relates to the technical field of polymer material processing, in particular to a conductive enhanced PC / PBT resin composition and a preparation method thereof. Background technique [0002] The PC / PBT resin composition has good energy absorption effect and good stability under different ambient temperatures, therefore, it has a broad application prospect in the field of interior and exterior decoration of automobiles, which requires more and more safety. The interior and exterior of automobiles are generally processed after electroplating or spraying, and electrostatic spraying has attracted more and more attention due to its high spraying efficiency and less environmental pollution. Therefore, materials with both high conductivity and high impact strength are becoming more and more popular. There are also many related patents in the prior art. For example, the patent with the publication number of CN1024247 discloses a conductive PC / PB...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L67/02C08L51/04C08K9/04C08K3/04
CPCC08K2201/003C08K2201/011C08L69/00C08L2205/03C08L67/02C08L51/04C08K9/04C08K3/04
Inventor 单桂芳于云安周霆罗明华辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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