A kind of high gwit flame retardant pbt/pet alloy material and its preparation method and application

Abstract

The invention discloses a flame-retardant PBT / PET alloy material with high GWIT and a preparation method and application thereof. The flame-retardant PBT / PET alloy material includes the following components in parts by weight: 13-48 parts of PBT resin, 5-40 parts of PET resin, 8-10 parts of brominated flame retardant, and 0.5-1 part of antimony trioxide , 3 to 6 parts of calcium hydroxide, and 25 to 35 parts of alkali-free glass fiber. The invention can effectively improve the GWIT value of the flame-retardant PBT / PET alloy material through the specific composition, reaching 850°C, achieving 1.60mmV0 level flame-retardant, and meeting the high requirements for GWIT of unattended electrical products. Furthermore, the high GWIT flame retardant PBT / PET alloy material of the present invention has high GWIT and V0 flame retardant effects, and also has excellent mechanical properties. Notched impact strength can reach about 9kJ / m.

Description

technical field

[0001] The invention relates to the technical field of engineering plastics, and more particularly, to a flame-retardant PBT / PET alloy material with high GWIT and a preparation method and application thereof. Background technique

[0002] Compared with PBT materials, flame retardant reinforced PBT / PET materials have the advantages of brighter appearance and higher heat resistance temperature. They are widely used in electronic appliances and other fields. For a long time, flame retardant PBT / PET materials are usually compounded with bromine and antimony. The system 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 IEC glow wire test, the glow wire The ignition temperature (GWIT) is relatively low, usually only about 750℃, and many unattended electrical products put forward higher requiremen...

Examples

Embodiment 1～7

[0037] A high GWIT flame retardant PBT / PET alloy material, in weight percent, comprising the components shown in Table 1.

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

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

[0040] The particle size of calcium hydroxide was 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 high GWIT flame retardant PBT / PET alloy material is as follows:

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

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

Embodiment 8

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

[0049] 25.5 parts of PBT resin

[0050] 25 parts PET resin

[0051] 8 parts of 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 ℃.

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

[0057] Brominated flame retardants are brominated epoxy resins.

[0058] The calcium hydroxide was calcium hydroxide with a particle size 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, comprising the following components:

[0062] 25.5 parts of PBT resin

[0063] 25 parts PET resin

[0064] 8 parts of 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 ℃.

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

[0070] Brominated flame retardants are brominated epoxy resins.

[0071] The calcium hydroxide was calcium hydroxide having a particle size 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.

technical field

[0001] The invention relates to the technical field of engineering plastics, and more particularly, to a flame-retardant PBT / PET alloy material with high GWIT and a preparation method and application thereof. Background technique

[0002] Compared with PBT materials, flame retardant reinforced PBT / PET materials have the advantages of brighter appearance and higher heat resistance temperature. They are widely used in electronic appliances and other fields. For a long time, flame retardant PBT / PET materials are usually compounded with bromine and antimony. The system 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 IEC glow wire test, the glow wire The ignition temperature (GWIT) is relatively low, usually only about 750℃, and many unattended electrical products put forward higher requiremen...

Examples

Embodiment 1～7

[0037] A high GWIT flame retardant PBT / PET alloy material, in weight percent, comprising the components shown in Table 1.

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

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

[0040] The particle size of calcium hydroxide was 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 high GWIT flame retardant PBT / PET alloy material is as follows:

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

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

Embodiment 8

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

[0049] 25.5 parts of PBT resin

[0050] 25 parts PET resin

[0051] 8 parts of 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 ℃.

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

[0057] Brominated flame retardants are brominated epoxy resins.

[0058] The calcium hydroxide was calcium hydroxide with a particle size 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, comprising the following components:

[0062] 25.5 parts of PBT resin

[0063] 25 parts PET resin

[0064] 8 parts of 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 ℃.

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

[0070] Brominated flame retardants are brominated epoxy resins.

[0071] The calcium hydroxide was calcium hydroxide having a particle size 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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