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PBT (polybutylece terephthalate) composite and preparation method thereof

A composite material and PBT resin technology, applied in the field of high-performance PBT composite material and its preparation, can solve the problems of floating fiber and unsatisfactory synergy effect, and achieve the effect of expanding the scope of application, improving the relative molecular mass, and improving the mechanical properties.

Inactive Publication Date: 2013-02-13
CHANGZHOU UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The problem to be solved by the present invention is: for the halogen-free flame retardant antistatic PBT material, in the traditional reinforcing material system, the phenomenon of floating fibers is easy to occur, while in the prior art, in the non-reinforced PBT material, the halogen-free The synergistic effect between flame retardant performance and antistatic performance is not ideal

Method used

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  • PBT (polybutylece terephthalate) composite and preparation method thereof
  • PBT (polybutylece terephthalate) composite and preparation method thereof
  • PBT (polybutylece terephthalate) composite and preparation method thereof

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Embodiment Construction

[0039] First, air-dry PBT at 120-150°C for 3-5 hours, and air-dry the flame retardant at 80-100°C for 3-5 hours. The toughening agent is air-dried at 50-60°C for 3-5 hours. Weigh the pre-dried PBT, flame retardant, toughening agent, antistatic agent, and tackifier according to the mass given in Table 1. Add the low-speed mixer to pre-mix according to the ratio of parts, and the mixing time is 10 to 15 minutes. After mixing evenly, use a twin-screw extruder to blend, extrude, and granulate. The barrel temperature is 230-250°C, and the screw speed is preferably 30-50r / min. The obtained pellets are air-dried at 110-130°C for 3-5 hours, and then molded into standard tensile and impact splines on an injection molding machine at a temperature of 240-250°C. Table 2 lists the material formulations for the surface treatment of carbon-based conductive materials, and Table 3 shows the test results of the samples prepared in specific examples 1-5.

[0040] Table 1 specific embodiment 1~...

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Abstract

The invention provides a high-performance halogen-free flame-resistant non-reinforced antistatic PBT (polybutylece terephthalate) composite and a preparation method thereof. The composite can still keep good flame-resistant, antistatic and mechanical properties under the condition that a reinforcing material is not added, and the phenomenon of fiber floating in the traditional reinforcing material system is avoided. The preparation method comprises the following steps that PBT resin, a fire retardant and a flexibilizer are dried, and a tackifier and an antistatic material are pretreated; the PBT resin and various padding are added into a low-speed mixer to be pre-mixed, the PBT resin and the padding are uniformly mixed and then are blend and extruded and pelleted through a double-screw extruder to be dried, and the halogen-free flame-resistant non-reinforced antistatic PBT material is obtained.

Description

technical field [0001] The patent of the present invention relates to a high-performance PBT composite material and a preparation method thereof, in particular to a halogen-free flame-retardant and antistatic PBT composite material and a preparation method thereof. Background technique [0002] Polybutylene terephthalate (PBT) is a thermoplastic polyester plastic with good heat resistance, weather resistance, chemical resistance, electrical insulation, low light absorption, and good gloss. It is widely used in electronic and electrical , auto parts, machinery, home improvement supplies, etc. However, its resistivity is high and it is easy to generate static electricity. Generally, antistatic agents are added to reduce the resistivity of PBT, so that it can effectively dissipate static charges, thereby avoiding the harm caused by the accumulation of static electricity. At the same time, the PBT molecular chain contains a benzene ring structure, which is not easy to form char...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L51/04C08K13/06C08K9/04C08K3/04C08K7/06C08K7/00C08K5/29C08K5/521C08K5/527C08K5/526C08K3/32C08K5/31C08K5/3492
Inventor 陶国良马国良夏艳平张发新王维
Owner CHANGZHOU UNIV
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