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Toughness reinforcing flame-proof reinforced polybutylene terephthalate complex and method for producing the same

A technology of polybutylene terephthalate and toughening type, which is applied in the field of toughened flame-retardant reinforced polybutylene terephthalate, which can solve the problems of general toughening effect and low toughening effect , to achieve the effect of excellent cost performance, good toughness and simple preparation process

Inactive Publication Date: 2008-06-11
南通市旺茂实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polyolefin grafts and binary copolymers of the above acid anhydrides also have the effect of improving the toughness of materials, but their toughening effect is lower than that of glycidyl methacrylate with GMA functional groups, and their market price is 16,000-35,000 yuan / Between tons, it is a toughening agent with moderate price and general toughening effect

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment

[0033] A method for producing a toughened flame-retardant reinforced polybutylene terephthalate composite, comprising the following steps in sequence:

[0034] ① Weigh the raw materials of each component according to the ratio of raw materials: mix PBT, bromide, antimony trioxide, antioxidant, anti-dripping agent, toughening agent ammonium weight ratio in a high-speed mixer;

[0035] ②Put the uniformly mixed above-mentioned raw materials into the hopper, enter the twin-screw extruder through the feeder, and then introduce glass fiber, melt and extrude, cool, granulate, and dry to obtain the product.

[0036] The temperature setting range of the extruder is 200-230°C, and the residence time of the material in the screw is 0.3-2 minutes. The current is controlled within 80% of the rated current.

[0037] Concrete consumption percentage (weight) of each composition, see Table 1.

[0038] Table 1 Embodiment 1-6 formula and material performance table

[0039] material n...

Embodiment 7

[0043] Embodiment 7: raw material weight percent is:

[0044] PBT 45~75% (for example 45%, 60%, 75%)

[0045] Glass fiber 0~30% (for example 0%, 15%, 30%)

[0046] Bromide 7~19% (Example 8%, 12%, 19%)

[0047] Antimony trioxide 2.3~9.5% (for example 2.5%, 6%, 9%)

[0048] Toughener 1.5~10% (Example 2%, 7%, 10%)

[0049] Antioxidant 0.1~0.8% (eg 0.1%, 0.4%, 0.8%)

[0050] Anti-dripping agent 0.05-1.0% (eg 0.05%, 0.5%, 1%).

[0051] The sum of the weights of the above components is 100%. The antioxidant described herein is a compound of a main antioxidant and an auxiliary antioxidant, and the weight ratio of the main antioxidant to the auxiliary antioxidant is 1:0.5-1.5.

[0052] The anti-dripping agent is polytetrafluoroethylene resin (melting point: 327° C.) or specially modified polytetrafluoroethylene powder (such as Mitsubishi S3800, Antelope SN3300, etc.). The brominated compounds are decabromodiphenyl ether, decabromodiphenylethane, brominated epoxy with a molecula...

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Abstract

The invention discloses a toughening flame-retardant reinforcing polybutylene terephthalate compound and a relative production method, while the compound is prepared from PBT, glass fiber, bromide, antimony oxide, toughening agent, anti-oxidant and anti-drop agent. The production method comprises weighting materials according to a certain ratio, mixing the PBT, bromide, antimony oxide, toughening agent, anti-oxidant and anti-drop agent at a certain mass ratio in a high-speed mixer uniformly, arranging the uniform mixture in bucket, using a feeder to feed the mixture into a twin-screw extruder, to obtain flame-retardant reinforcing PBT compound with good toughness. The bromines reinforcing flame retardant PBT compound has good toughness and performance price ratio, with simple preparation and low cost.

Description

Technical field: [0001] The invention relates to a toughened flame-retardant reinforced polybutylene terephthalate and a production method. Background technique: [0002] Flame-retardant reinforced PBT materials are widely used in electronics, electrical industries, energy-saving lamps, etc. because of their good physical and mechanical properties, electrical properties and thermal properties. , air conditioner terminal board, ideal material for energy-saving lamp lamp holder. At present, most flame-retardant reinforced PBT materials use bromide and antimony trioxide as a flame-retardant system, add appropriate amount of glass fiber, antioxidant and other additives, and carry out high-temperature melt extrusion in a twin-screw extruder. The PBT material prepared by this method has the characteristics of strong rigidity and lack of toughness. During injection molding, there will be tiny gaps at the weld line on the surface of the part or the place where the steel needle (sil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K7/10C08K13/02C08K3/22C08K5/06C08K5/02B29B9/00B29C47/92B29C48/40B29C48/92
CPCB29C48/92B29C2948/92704B29C48/04B29C48/40B29C2948/92561B29C2948/92895
Inventor 周传敏陈建新陈晰马宝海
Owner 南通市旺茂实业有限公司
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