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High-GWIT flame-retardant PBT/PET alloy material as well as preparation method and application thereof

An alloy material and PBT resin technology, which is applied in the field of engineering plastics, can solve the problems that the GWIT value of flame-retardant PBT/PET alloy materials cannot reach 850 °C and cannot meet the GWIT requirements, and achieve the effect of excellent mechanical properties.

Active Publication Date: 2021-05-07
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defect and deficiency that the GWIT value of the existing flame-retardant PBT / PET alloy material cannot reach 850°C and cannot meet the GWIT requirements of electronic and electrical products, and provide a high-GWIT flame-retardant PBT / PET Alloy materials, through the synergistic effect of antimony trioxide and calcium hydroxide, effectively improve the GWIT performance and mechanical properties of flame-retardant flame-retardant PBT / PET alloy materials, with 850 ° C and 1.6mmV0 level flame retardancy, and good mechanical properties

Method used

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  • High-GWIT flame-retardant PBT/PET alloy material as well as preparation method and application thereof
  • High-GWIT flame-retardant PBT/PET alloy material as well as preparation method and application thereof
  • High-GWIT flame-retardant PBT/PET alloy material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～7

[0037] A flame-retardant PBT / PET alloy material with high GWIT, including the components shown in Table 1 by weight percentage.

[0038] Among them, the relative density of PBT resin is 1.30-1.32g / cm 3 , melting point 215-230°C. Manufacturer: Taiwan Changchun Chemical Industry, Brand: PBT 1200-211M

[0039] The density of PET resin is 1.31~1.33g / cm 3 , melting point 250-270°C. Manufacturer: Sinopec Yizheng Chemical Fiber, Brand: PET FG600

[0040] The particle size of calcium hydroxide is 5 μm. commercially available.

[0041] Brominated flame retardants are brominated epoxy resins. Manufacturer: Israel Chemical Group, Brand: Powder-F-2100.

[0042] The preparation method of the flame-retardant PBT / PET alloy material with high GWIT is as follows:

[0043] 1) Dry PBT at 135°C for 4 hours and set aside;

[0044]2) Mix PBT resin, PET resin, brominated flame retardant, antimony trioxide, and calcium hydroxide evenly, and add them to the twin-screw extruder. The alkali-fre...

Embodiment 8

[0048] A flame-retardant PBT / PET alloy material with high GWIT, by weight percentage, comprises the following components:

[0049] 25.5 parts of PBT resin

[0050] 25 parts PET resin

[0051] 8 parts brominated flame retardant

[0052] 0.5 parts of antimony trioxide

[0053] 4 parts calcium hydroxide

[0054] 35 parts of E-glass fiber.

[0055] Among them, the relative density of PBT resin is 1.30-1.32g / cm 3 , melting point 215-230°C.

[0056] The density of PET resin is 1.31~1.33g / cm 3 , melting point 250-270°C.

[0057] Brominated flame retardants are brominated epoxy resins.

[0058] Calcium hydroxide is calcium hydroxide having a particle diameter of 8 μm.

[0059] The preparation method of the flame-retardant PBT / PET alloy material with high GWIT is the same as that in Example 1.

Embodiment 9

[0061] A flame-retardant PBT / PET alloy material with high GWIT, by weight percentage, comprises the following components:

[0062] 25.5 parts of PBT resin

[0063] 25 parts PET resin

[0064] 8 parts brominated flame retardant

[0065] 0.5 parts of antimony trioxide

[0066] 4 parts calcium hydroxide

[0067] 35 parts of E-glass fiber.

[0068] Among them, the relative density of PBT resin is 1.30-1.32g / cm 3 , melting point 215-230°C.

[0069] The density of PET resin is 1.31~1.33g / cm 3 , melting point 250-270°C.

[0070] Brominated flame retardants are brominated epoxy resins.

[0071] Calcium hydroxide is calcium hydroxide having a particle diameter of 10 μm.

[0072] The preparation method of the flame-retardant PBT / PET alloy material with high GWIT is the same as that in Example 1.

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Abstract

The invention discloses a high-GWIT flame-retardant PBT / PET alloy material as well as a preparation method and application thereof. The flame-retardant PBT / PET alloy material is prepared from the following components in parts by weight: 13 to 48 parts of PBT resin, 5 to 40 parts of PET resin, 8 to 10 parts of brominated flame retardant, 0.5 to 1 part of antimony trioxide, 3 to 6 parts of calcium hydroxide and 25 to 35 parts of alkali-free glass fiber. Through specific component compatibility, the GWIT value of the flame-retardant PBT / PET alloy material can be effectively increased and reaches 850 DEG C, 1.60 mmV0-level flame retardance is achieved, and the high requirement of unattended electrical products for GWIT is met. Furthermore, the flame-retardant PBT / PET alloy material with high GWIT provided by the invention has high GWIT and V0 flame-retardant effect, and also has excellent mechanical properties, and the notch impact strength can reach about 9kJ / m.

Description

technical field [0001] The invention relates to the technical field of engineering plastics, more specifically, to a flame-retardant PBT / PET alloy material with high GWIT and its preparation method and application. Background technique [0002] Compared with PBT materials, flame-retardant reinforced PBT / PET materials have the advantages of brighter appearance and higher heat resistance temperature, and are widely used in electronic and electrical fields. For a long time, flame-retardant PBT / PET is usually made of bromine-antimony compound system, which has the advantages of high flame retardant efficiency and good flame retardant effect, but the conventional flame retardant PBT / PET engineering plastics can only meet the V-0 flame retardant requirements of UL-94. For the glow wire test of IEC, its glow wire The combustion temperature (GWIT) is relatively low, usually only about 750°C, and many unattended electrical products have put forward higher requirements for GWIT, reach...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L63/00C08K7/14C08K3/22
CPCC08L67/02C08L2201/02C08L2205/025C08L2203/20C08K2003/2206C08K2201/003C08L63/00C08K7/14C08K3/22C08K3/2279
Inventor 付学俊黄险波叶南飚陈锐殷年伟陈伟丁超
Owner KINGFA SCI & TECH CO LTD
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