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Halogen-free flame retardant reinforced PCT/polyester alloy and preparation method thereof

A technology of polyester alloy and polyester, applied in the field of halogen-free flame-retardant reinforced PCT/polyester alloy and its preparation, to achieve good mechanical properties, easy insulation, and optimized processing performance

Inactive Publication Date: 2015-02-25
SHANGHAI SUNNY
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  • Abstract
  • Description
  • Claims
  • Application Information

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But there is no report about a kind of halogen-free flame-retardant reinforced PCT / polyester alloy and its preparation method

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  • Halogen-free flame retardant reinforced PCT/polyester alloy and preparation method thereof

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preparation example Construction

[0046] The preparation method comprises the following steps:

[0047] (1) Weigh raw materials according to weight ratio: PCT 20-50%, polyester 10-30%, compound halogen-free flame retardant 5-25%, toughening agent 2-20%, polyester nucleating agent 0.3-1%, antioxidant 0.1-0.9%, lubricant 0.2-0.6%, put it into the high mixer and mix for 2-5 minutes, and then add it from the first section of the twin-screw extruder ( figure 1 );

[0048] (2) If a solid phosphorus-based flame retardant is used, it is blended with other raw materials in step (1) in a high-speed mixer, and added from the first section of the twin-screw extruder; if a liquid phosphorus-based flame retardant is used Then it is added from the fifth barrel of the twin-screw extruder through the feeding pump;

[0049] (3) Add glass fiber with a weight ratio of 10-40% from the fourth section of the twin-screw extruder;

[0050] (4) The above-mentioned materials are extruded and granulated by a twin-screw extruder, the s...

Embodiment 1

[0062] (1) Weigh raw materials according to weight ratio: PCT Z6004: 20%, polytrimethylene terephthalate (PTT): 15.1%, m-phenylene tetraphenyl bisphosphate: 8%, melamine polyphosphate: 10% %, polyester nucleating agent (NaV101): 1%, AX8900: 5%, antioxidant: 0.3%, lubricant: 0.6%.

[0063] (2) Mix the above-mentioned materials except m-phenylene tetraphenyl bisphosphate in a high-speed mixer for 5 minutes, and then add them from the main feed of the twin-screw extruder.

[0064] (3) Add alkali-free long glass fiber with a weight ratio of 40% from the fourth section of the twin-screw extruder, and m-phenylene tetraphenyl bisphosphate is added from the fifth section of the twin-screw extruder through a feeding pump .

[0065] (4) The above-mentioned materials are extruded and granulated by a twin-screw extruder, the rotation speed of the screw machine is 450 rpm, and the temperature is 230°C.

Embodiment 2

[0067] (1) Weigh raw materials according to weight ratio: PCT Z6006: 28.4%, polytrimethylene terephthalate (PTT): 16.2%, triphenyl phosphate: 8%, melamine: 4%, polyester nucleating agent ( NAV101): 0.5%, AX8900: 7%, antioxidant: 0.5%, lubricant: 0.4%.

[0068] (2) Mix the above raw materials in a high-speed mixer for 5 minutes, and then add them from the main feed of the twin-screw extruder.

[0069] (3) The alkali-free long glass fiber with a weight ratio of 35% is added from the fourth section of the twin-screw extruder.

[0070] (4) The above-mentioned materials are extruded and granulated by a twin-screw extruder, the rotation speed of the screw machine is 500 rpm, and the temperature is 240°C.

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Abstract

The invention relates to a halogen-free flame retardant reinforced PCT / polyester alloy. The PCT / polyester alloy is prepared from the following raw materials in percentage by weight: 20-50% of PCT, 10-30% of polyester, 5-25% of compound halogen-free flame retardant, 10-40% of glass fiber, 2-20% of toughening agent, 0.3-1% of polyester nucleating agent, 0.1-0.9% of antioxidant and 0.2-0.6% of lubricating agent. The invention also provides a preparation method of the alloy. The preparation method have the advantages that as the appropriate nucleating agent is adopted, the crystallinity of polyester is improved and the processability of the alloy is optimized; the PCT alloy has the advantages of good mechanical property, flame retardance, insulativity, easiness in processing forming and the like and simultaneously meets the requirements of EU RoHS, IEC non-halogenation and Reach regulations; and meanwhile, the PCT alloy has better aging resistance and hydrolysis resistance than PC alloys, so the PCT alloy has better application prospect.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a halogen-free flame-retardant reinforced PCT / polyester alloy and a preparation method thereof. Background technique [0002] Poly(1,4-cyclohexanedimethanol) terephthalate (PCT) has good mechanical properties, chemical stability, heat resistance, easy processing and low moisture absorption, and is a high-performance thermoplastic engineering plastic. However, due to its high processing temperature and poor flame retardancy, its application range is greatly limited. PCT is rarely used alone, and almost all of its commercial products are blended with other polymers or chemically modified. PCT products can be roughly divided into three types: filling type, copolyester type and melt blending type. In recent years, researchers at home and abroad have done a lot of research on PCT blending modification, and many alloyed products have been sold in the market, but the performance of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08K13/06C08K9/06C08K7/14C08K7/10C08K5/098C08K5/053B29B9/06B29C47/92B29C48/92
CPCB29C47/92B29C48/04B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 王瑞元陈晓东徐群杰王尹杰才勇
Owner SHANGHAI SUNNY