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PBT powder with characteristics of high toughness, high strength and high fire retardation

A high flame-retardant, high-strength technology, applied in the field of PBT powder, can solve the problems of poor flame retardancy, low notched impact strength, and high notch sensitivity of pure PBT materials, and achieve excellent electrical properties, heat resistance and corrosion resistance, and anti-corrosion properties. Strong aging performance and good application prospects

Inactive Publication Date: 2015-08-19
QINGDAO WANLI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the influence of PBT crystallization, the sensitivity to the notch is large, the notch impact strength is low, and the toughness is insufficient. In addition, the flame retardancy of pure PBT materials is poor. The above shortcomings of PBT limit its application in some aspects.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A PBT powder with high toughness, high strength and high flame retardancy, its components are proportioned by mass percentage: PBT 58%, composite filler 15%, composite flame retardant 15%, POE-g-MAH 8%, 2-Hydroxy-4-methoxybenzophenone 2%, erucamide 0.8%, pentaerythritol stearate 1%, antioxidant 0.2%. Wherein, the PBT is polybutylene terephthalate resin; the composite filler is a mixture of heavy calcium carbonate and precipitated barium sulfate with a mass ratio of 2:1, which has been activated by an aluminum-titanium composite coupling agent. Filler, the particle size of the heavy calcium carbonate is 0.5-5 μm, the particle size of the precipitated barium sulfate is 0.5-1 μm; the composite flame retardant is made of 50wt% bisphenol A-bis(diphenyl phosphate ), 25wt% polydimethylsiloxane, 20wt% nano-magnesium hydroxide and 5wt% polytetrafluoroethylene; the antioxidant is antioxidant 1076 with a mass ratio of 1:1 A compound of antioxidant 168.

[0021] Its preparation m...

Embodiment 2

[0023] A PBT powder with high toughness, high strength and high flame retardancy, its components are proportioned by mass percentage: PBT 72%, composite filler 10%, composite flame retardant 10%, TPU-g-MAH 5%, 2-Hydroxy-4-n-octyloxybenzophenone 1.2%, erucamide 0.5%, pentaerythritol stearate 1%, antioxidant 0.3%. Wherein, the PBT is polybutylene terephthalate resin; the composite filler is a mixture of heavy calcium carbonate and precipitated barium sulfate with a mass ratio of 2:1, which has been activated by an aluminum-titanium composite coupling agent. Filler, the particle size of the heavy calcium carbonate is 0.5-5 μm, the particle size of the precipitated barium sulfate is 0.5-1 μm; the composite flame retardant is made of 50wt% bisphenol A-bis(diphenyl phosphate ), 25wt% polydimethylsiloxane, 20wt% nano-magnesium hydroxide and 5wt% polytetrafluoroethylene; the antioxidant is antioxidant 1076 with a mass ratio of 1:1 A compound of antioxidant 168.

[0024] Its preparat...

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Abstract

The present invention discloses a PBT powder with characteristics of high toughness, high strength and high fire retardation, wherein the PBT powder comprises, by mass, 55-80% of PBT, 10-15% of a composite filler, 8-15% of a composite fire retardation agent, 3-8% of a toughening agent, 0.5-2% of an anti-aging agent, 0.1-1% of erucylamide, 0.1-1% of pentaerythrityl tetrastearate, and 0.1-0.5% of an antioxidant, wherein a mixed material comprising heavy calcium carbonate and precipitated barium sulfate according to a mass ratio of 2:1 is subjected to an aluminum titanium composite coupling agent activation treatment so as to obtain the composite filler. The PBT powder of the present invention has beneficial effects of high impact resistance toughness, high mechanical strength, high fire retardation, good processability, strong aging resistance, excellent electrical property, excellent heat resistance, excellent corrosion resistance, and good application prospects, and can be used in the application fields of vehicles, chemical industry, machinery, electrical apparatuses, and the like.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a PBT powder with high toughness, high strength and high flame retardancy. Background technique [0002] Polybutylene terephthalate (PBT for short) is a crystalline thermoplastic polyester with excellent comprehensive properties. It has become one of the five general-purpose engineering plastics and is widely used in automobiles, electronics, electrical appliances and other industries. However, due to the influence of PBT crystallization, it has high sensitivity to notch, low notched impact strength and insufficient toughness. In addition, the flame retardancy of pure PBT material is poor. The above shortcomings of PBT limit its application in some aspects. Contents of the invention [0003] The object of the present invention is to provide a kind of PBT powder with high toughness, high strength and high flame retardancy. [0004] The technical solution adopted by th...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L83/04C08L27/18C08L51/06C08L51/04C08L51/08C08L51/00C08K13/06C08K9/04C08K3/26C08K3/30C08K5/523C08K3/22
Inventor 不公告发明人
Owner QINGDAO WANLI TECH
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