Flame-retardant PBT/PET (polybutylece terephthalate/polyethylene terephthalate) alloy, preparation method and application thereof

A PBT resin and alloy technology, which is applied in the field of preparation and flame-retardant PBT/PET alloy, can solve the problems of antimony price increase, loss of part or all of commercial value, disadvantages, etc., and achieve the effect of small loss of mechanical properties

Pending Publication Date: 2018-10-23
BENSONG ENG PLASTICS HANGZHOU
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  • Abstract
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Problems solved by technology

[0019] By carefully reading the above patent documents 7-11, it is not difficult to find that the provider of the technical solution added more antimony trioxide in order to obtain a better synergistic effect. It is difficult to find that there are serious drawbacks in the design concept of this scheme: research and development are carried ou

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  • Flame-retardant PBT/PET (polybutylece terephthalate/polyethylene terephthalate) alloy, preparation method and application thereof
  • Flame-retardant PBT/PET (polybutylece terephthalate/polyethylene terephthalate) alloy, preparation method and application thereof

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Embodiment Construction

[0052] In the following specific embodiments, the flame-retardant PBT / PET alloy components include 30-50% of PBT resin by weight percentage; 5-15% of PET resin; 15-20% of brominated flame retardant; 0.5-2% of antimony compound ; Kaolin 4-10%; reinforcing material 20-40%; wherein the weight percentage of each component is 100%. The applicant unexpectedly discovered during the research process: the PBT / PET alloy mixed in a specific ratio is added with a flame retardant compounded in a specific ratio (including brominated flame retardants, antimony compounds and kaolin) , can obtain unexpected flame retardant effect and mechanical properties. The effect is better when adding reinforcement materials, especially glass fiber. See above for the specific proportions described. In the above formulation, kaolin is not used as a thermal oxygen barrier, but as a synergistic efficiency enhancer of a specific synergistic flame retardant system (halogen-antimony synergistic flame retardant...

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Abstract

The invention belongs to the technical field of polymer modification, and provides a flame-retardant PBT/PET (polybutylece terephthalate/polyethylene terephthalate) alloy, a preparation method and application thereof. The flame-retardant PBT/PET alloy is prepared from the following components in parts by weight: 30 to 50% of PBT resin, 5 to 15% of PET resin, 15 to 20% of brominated flame retardant, 0.5 to 2% of antimony compound, 4 to 10% of kaolin, and 20 to 40% of reinforcing material, wherein the synergistic agent is a compound synergistic agent; the compound synergistic agent consists of the antinomy compound and the kaolin; the sum of the percentages of the components by weight is 100%. Compared with the traditional art, the preparation method of the flame-retardant PBT/PET alloy hasthe advantages that the V-0 flame-retardant grade of UL-94 and the IEC 60335 safety standard can be simultaneously reached, the loss of mechanical property is very small, the adding amount of the antinomy compound is very low, and the material cost is lower.

Description

technical field [0001] The invention belongs to the technical field of polymer modification, and relates to a flame-retardant PBT / PET alloy, a preparation method and an application thereof. Background technique [0002] PBT is polybutylene terephthalate, which is one of the five general-purpose engineering plastics. The plastic has excellent mechanical properties, which are reflected in high mechanical strength, high fatigue resistance, high dimensional stability, and small creep. The above properties also rarely change under high temperature conditions. After enhanced modification, it can be widely used in the fields of automobile manufacturing, electronics, instrumentation, lighting appliances, home appliances, textiles, machinery and communications. A branch of enhanced modification is to add glass fiber and flame retardant additives to PBT by means of melt blending to obtain enhanced flame retardant PBT materials, which are used in various electronic and electrical conn...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L63/00C08K3/22C08K3/34C08K7/14C08K13/06
CPCC08L67/02C08L2201/02C08L2205/025C08L2205/03C08L63/00C08K3/2279C08K3/346C08K7/14C08K13/06
Inventor 刘凯悦曾昭礼张光辉周永松
Owner BENSONG ENG PLASTICS HANGZHOU
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