High-GWIT flame-retardant PBT/PC, and preparation method and application thereof

A technology of PBT resin and brominated flame retardant, which is applied in the field of engineering plastics, can solve the problems of insufficient mechanical properties such as toughness, and achieve excellent mechanical properties and heat resistance, good heat resistance, high flame retardancy and high toughness Effect

Active Publication Date: 2021-06-11
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the glow wire ignition temperature (GWIT) of the high glow wire high CTI super-tough flame retardant PBT/PC alloy material can reach the requirement of 850°C, its toughness and other

Method used

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  • High-GWIT flame-retardant PBT/PC, and preparation method and application thereof
  • High-GWIT flame-retardant PBT/PC, and preparation method and application thereof
  • High-GWIT flame-retardant PBT/PC, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～7

[0039] A high GWIT flame-retardant PBT / PC, including the components shown in Table 1 by weight percentage.

[0040] 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

[0041] The density of PC resin is 1.18-1.21g / cm3, and the melt index is 5-25g / 10min. Manufacturer: Korea LG Chem, Brand: PC 1300-22NP

[0042] The particle size of calcium hydroxide is 5 μm. commercially available.

[0043] Brominated flame retardants are brominated epoxy resins. Israel Chemical Group, Brand: Powder-F-2100

[0044] The preparation method of high GWIT flame retardant PBT / PC is as follows:

[0045] 1) Dry the PBT resin at 135°C for 4 hours and set aside;

[0046] 2) Mix PBT resin, PC resin, brominated flame retardant, antimony trioxide, and calcium hydroxide evenly, and add them to the twin-screw extruder. High GWIT flame retardant PBT / PC can be obtained by compounding, extruding...

Embodiment 8

[0051] A high GWIT flame-retardant PBT composition, by weight percentage, comprises the following components:

[0052] 45.5 parts of PBT resin

[0053] 7 parts PC resin

[0054] 8 parts brominated flame retardant

[0055] 0.5 parts of antimony trioxide

[0056] 5 parts calcium hydroxide

[0057] 30 parts of E-glass fiber.

[0058] Among them, the relative density of PBT resin is 1.30-1.32g / cm 3 , melting point 215-230°C.

[0059] The density of PC resin is 1.18~1.21g / cm 3 , Melt index 5 ~ 25g / 10min.

[0060] Brominated flame retardants are brominated epoxy resins.

[0061] Calcium hydroxide is calcium hydroxide having a particle diameter of 15 μm.

[0062] The preparation method of high GWIT flame retardant PBT / PC is as follows:

[0063] 1) Dry the PBT resin at 135°C for 4 hours and set aside;

[0064] 2) Mix PBT resin, PC resin, brominated flame retardant, antimony trioxide, and calcium hydroxide evenly, and add them to the twin-screw extruder. High GWIT flame ret...

Embodiment 9

[0066] A high GWIT flame-retardant PBT composition, by weight percentage, comprises the following components:

[0067] 45.5 parts of PBT resin

[0068] 7 parts PC resin

[0069] 8 parts brominated flame retardant

[0070] 0.5 parts of antimony trioxide

[0071] 5 parts calcium hydroxide

[0072] 30 parts of E-glass fiber.

[0073] Among them, the relative density of PBT resin is 1.30-1.32g / cm 3 , melting point 215-230°C.

[0074] The density of PC resin is 1.18~1.21g / cm 3 , Melt index 5 ~ 25g / 10min.

[0075] Brominated flame retardants are brominated epoxy resins.

[0076] Calcium hydroxide is calcium hydroxide having a particle diameter of 10 μm.

[0077] The preparation method of high GWIT flame retardant PBT / PC is as follows:

[0078] 1) Dry the PBT resin at 135°C for 4 hours and set aside;

[0079] 2) Mix PBT resin, PC resin, brominated flame retardant, antimony trioxide, and calcium hydroxide evenly, and add them to the twin-screw extruder. High GWIT flame ret...

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Abstract

The invention discloses high-GWIT flame-retardant PBT/PC, and a preparation method and application thereof. The flame-retardant PBT/PC is prepared from, by weight, 37.5 to 55.5 parts of PBT resin, 5 to 10 parts of PC 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 20 to 35 parts of alkali-free glass fiber. Through specific component compatibility, the GWIT value of the flame-retardant PBT/PC 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 high-GWIT flame-retardant PBT/PC disclosed by the invention has high GWIT and V0 flame-retardant effects, and also has excellent mechanical properties and heat resistance, the tensile strength can reach 105 MPa, the notch impact strength can reach 9.5 kJ/m, the thermal deformation temperature can reach 200 DEG C, and the high-GWIT flame-retardant high-toughness PBT/PC has high GWIT, high flame retardance and good heat resistance.

Description

technical field [0001] The invention relates to the technical field of engineering plastics, more specifically, to a high-GWIT flame-retardant PBT / PC and its preparation method and application. Background technique [0002] Flame-retardant reinforced PBT / PC materials have been widely used in the fields of electronic appliances. PBT / PC engineering plastics can only meet the V-0 flame retardant requirements of UL-94. For the glow wire test of IEC, the glow wire ignition temperature (GWIT) is relatively low, usually only about 725 ° C, and many unattended The electrical products put forward higher requirements for GWIT, reaching the stringent requirements of GWIT850℃, and conventional flame-retardant PBT cannot meet this requirement. [0003] CN104231568A discloses a high-glow wire high-CTI super-tough flame-retardant PBT / PC alloy material and its preparation method. The material is prepared from the following raw materials in parts by weight: 15-70 parts of PBT, 10-25 parts o...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L69/00C08L63/00C08K3/22C08K7/14
CPCC08L67/02C08L2201/02C08L2205/03C08L2203/20C08L2201/08C08K2003/2206C08L69/00C08L63/00C08K3/2279C08K3/22C08K7/14
Inventor 陈锐黄险波叶南飚付学俊殷年伟陈伟丁超
Owner KINGFA SCI & TECH CO LTD
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