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Halogen-free phosphorus-free flame-retarding toughening master batch special for PBT (polybutylene terephthalate) and preparation method thereof

A technology of toughening masterbatch and PBT resin, applied in the field of polymer material modification, can solve the problems of poor flame retardant effect, difficult processing, large addition amount, etc., to improve flame retardant efficiency, improve mechanical properties, compatibility improved effect

Inactive Publication Date: 2012-07-04
SUZHOU CUIZHI NEW TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Phosphorus-nitrogen flame retardants are also compatible with each other, but the flame retardant effect is very poor, and it does not meet the UL940.8mm V-0 level generally required by the electrical and electronic industry.
[0003] At present, the non-halogenated flame retardant technology of nylon, PP, ABS and other materials is relatively easy, and some cost-effective flame retardants have appeared in the market, but the non-halogenated flame retardant modification technology and products of PBT have always been a worldwide problem
At present, the flame retardant OP1240 produced by Clariant of Germany has the best comprehensive performance when used in PBT flame retardant modification, but this product can only be imported, the price is expensive, the supply is tight, and the addition amount is large, and because it is a powder, Difficult to process, demanding on processing technology and extruder

Method used

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  • Halogen-free phosphorus-free flame-retarding toughening master batch special for PBT (polybutylene terephthalate) and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Halogen-free and phosphorus-free flame retardant toughening masterbatch formula for PBT (weight percent)

[0047] (1) PBT resin - 40%;

[0048] (2) Halogen-free and phosphorus-free flame retardants - 50%;

[0049] (3) POE of GMA grafting——7.5%;

[0050] (4) Composite antioxidant system composed of 1010 and 168 antioxidants - 0.4%;

[0051] (5) Polyethylene wax - 1.5%;

[0052] (6) Silane coupling agent - 1%

[0053] The masterbatch is used for PBT modification, adding 30-35% can reach UL940.8mm V0

Embodiment 2

[0055] Halogen-free and phosphorus-free flame retardant toughening masterbatch formula for PBT (weight percent)

[0056] (1) PBT resin - 30%;

[0057] (2) Halogen-free and phosphorus-free flame retardants - 58%;

[0058] (3) Ethylene-butyl acrylate binary copolymer and low-density polyethylene - 9%;

[0059] (4) Composite antioxidant system composed of 1010 and 168 antioxidants - 0.5%;

[0060] (5) Lubricating system composed of polyethylene wax and EBS - 2%;

[0061] (6) Silane coupling agent - 1.5%

[0062] The masterbatch is used for PBT modification, adding 25-30% can reach UL940.8mm V0

Embodiment 3

[0064] Halogen-free and phosphorus-free flame retardant toughening masterbatch formula for PBT (weight percent)

[0065] (1) PBT resin - 52%;

[0066] (2) Halogen-free and phosphorus-free flame retardants - 40%;

[0067] (3) POE grafted with maleic anhydride——6%;

[0068] (4) Composite antioxidant system composed of 1010 and 168 antioxidants - 0.3%;

[0069] (5) Polypropylene wax and TAF lubrication system - 1%;

[0070] (6) Titanate coupling agent - 0.6%

[0071] The masterbatch is used for PBT modification, adding 35-45% can reach UL94 0.8mm V0

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Abstract

The invention provides a halogen-free phosphorus-free flame-retarding toughening master batch special for PBT (polybutylene terephthalate) and a preparation method thereof. The master batch is characterized in that the raw material formulation comprises the following components in percentage by weight: 20-60% of PBT resin, 70-35% of halogen-free phosphorus-free flame retardant, 5-10% of toughening agent, 0.2-0.6% of antioxidant, 1-3% of lubricating and dispersing agent and 0.2-1% of coupling agent. In the preparation method, PBT is used as a carrier, and PDPTP is used as the halogen-free phosphorus-free flame retardant; after surface treatment is carried out, the toughening agent, the dispersing agent and the antioxidant are added, and extrusion and granulation are carried out through two screws so as to prepare the halogen-free phosphorus-free flame-retarding toughening master batch special for PBT. According to the invention, the environment-friendly index of the prepared master batch meets the requirements of European Union RoHS (Restricted of Hazardous Substances), IEC (International Electrotechnical Commission) halogenation-free and Reach laws; and the prepared master batch can be used for modification of PBT, thus the flame-retarding grade of PBT reaches American UL 940.8mm V-0 grade, the CTI (comparative cracking index) value reaches more than 425V, the glowing filament experiment temperature reaches 750 DEG C but firing is not generated, and match color is not influenced.

Description

technical field [0001] The invention relates to the field of polymer material modification, in particular to a halogen-free, phosphorus-free, flame-retardant and toughening masterbatch for PBT and a preparation method thereof. The masterbatch can be used for the halogen-free flame retardant toughening and strengthening modification of PBT, and can also be used for PET, PTT, etc. After modification, the flame retardancy and mechanical properties in all aspects are the most ideal. Halogen-free flame retardant, toughened and reinforced PBT modified materials are widely used in industries and fields such as electronics, IT, aerospace, automobiles, household appliances, medical and sports equipment. Background technique [0002] For a long time, the flame retardant used for plastic modification is mainly bromine-antimony compound system. This system has good flame retardant effect, low addition amount, and little influence on the mechanical properties of materials, but it will be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L85/02C08L51/06C08L23/06C08L23/08C08J3/22
Inventor 孟繁茂王彦林吴绵松
Owner SUZHOU CUIZHI NEW TECH DEV
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