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Halogen-free flame-retardant polyethylene terephthalate engineering plastic composite material and preparation method thereof

A technology of ethylene phthalate and engineering plastics, applied in the field of polymer materials, can solve the problems of low warpage modulus, heat resistance, safety to be improved, etc., to improve the crystallization rate, shorten the nucleation induction period, The effect of accelerating PET crystallization

Active Publication Date: 2009-06-03
BEIJING HUATENG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This product has excellent flame retardant performance, low warpage, high modulus, high heat resistance and high impact performance, but unfortunately, red phosphorus is still used in the flame retardant, and the safety needs to be improved

Method used

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  • Halogen-free flame-retardant polyethylene terephthalate engineering plastic composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039]A component: nucleating agent organic rare earth phosphate nucleating agent (R is ethyl) 0.4 kg, antioxidant 0.16 kg 1010 and 0.24 kg 168, sodium antimonate 5.6 kg, external lubricant talcum powder 0.64 kg and silicon Ketone powder 0.16 kg, PE 0.8 kg;

[0040] Component B: 0.4 kg of pigment carbon black, 0.6 kg of PE;

[0041] Component C: 10 kg, prepared from 2.86 kg of melamine sodium pyrophosphate, 6.67 kg of ammonium polyphosphate (molecular weight polymerization degree ≥ 1000), and 0.47 kg of coupling agent rare earth coupling agent (Re is lanthanum).

[0042] 49 kilograms of PET resin, 30 kilograms of glass fibers, 2 kilograms of toughening agent maleic anhydride grafted polyethylene.

[0043] After the above ingredients are mixed evenly, they are introduced into the 53mm twin-screw extruder together, and the temperature control parameters in the 6 zones are: 230-270°C; 235-270°C; 240-270°C; 240-275°C; 240-275°C; 240°C ~270 ℃; screw speed 130~250rpm / min, then ext...

Embodiment 2

[0045] Component A: 0.35 kg of nucleating agent organic rare earth phosphate nucleating agent (R is propyl), 0.14 kg and 0.21 kg of antioxidant 1010 and 168 respectively, 4.9 kg of sodium antimonate; external lubricant talcum powder and Silicone powder 0.56 kg and 0.14 kg respectively, PE 0.7 kg;

[0046] Component B: 0.4 kg of pigment carbon black, 0.6 kg of PE;

[0047] Component C: 8 kg, prepared from 2.29 kg of melamine sodium pyrophosphate, 5.34 kg of ammonium polyphosphate (molecular weight polymerization degree ≥ 1000), and 0.37 kg of coupling agent rare earth coupling agent (Re is cerium).

[0048] 49 kilograms of PET resin, 32 kilograms of glass fiber, 2 kilograms of toughening agent maleic anhydride grafted polyethylene.

[0049] After the above ingredients are mixed evenly, they are introduced into the 53mm twin-screw extruder together, and the temperature control parameters in the 6 zones are: 230-270°C; 235-270°C; 240-270°C; 240-275°C; 240-275°C; 240°C ~270°C; t...

Embodiment 3

[0051] Component A: nucleating agent organic rare earth phosphate nucleating agent (R is butyl) 0.4 kg, antioxidant 1010 and 168 respectively 0.16 kg and 0.24 kg, sodium antimonate 5.6 kg, external lubricant talcum powder and silicon Ketone powder 0.64 kg and 0.16 kg, 0.8 kg PE;

[0052] Component B: 0.4 kg of pigment carbon black, 0.6 kg of PE;

[0053] Component C: 9 kg, prepared from 2.57 kg of melamine sodium pyrophosphate, 6 kg of ammonium polyphosphate (molecular weight polymerization degree ≥ 1000), and 0.43 kg of coupling agent rare earth coupling agent (Re is cerium).

[0054] 48 kilograms of PET resin, 30 kilograms of glass fiber, 2 kilograms of toughening agent maleic anhydride grafted polyethylene.

[0055] After the above ingredients are mixed evenly, they are introduced into the 53mm twin-screw extruder together, and the temperature control parameters in the 6 zones are: 230-270°C; 235-270°C; 240-270°C; 240-275°C; 240-275°C; 240°C ~270 ℃; screw speed 130~250rpm...

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Abstract

The invention relates to a halogen-free flame-retardant polyethylene terephthalate engineering plastic composite material and a preparation method thereof. The halogen-free flame-retardant polyethylene terephthalate engineering plastic composite material is prepared by commonly introducing PET resin, glass fiber, flexibilizer and additional three components of A, B and C into a twin-screw extruder and carrying out extrusion, cooling and pelletizing; wherein, the A component is mother particles which are prepared after mixing organic rare earth phosphate salt nucleating agent, antioxidant, external lubricant and polyethylene; the B component is the mother particles which are prepared after mixing pigment and PE; the C component is a flame-retardant system which is obtained by complexing phosphorus-containing inorganic material melamine pyrophosphate and phosphorus-containing organic material ammonium polyphosphate to form phosphonate salt and then using rare earth coupling agent for treatment. The PET in the invention is characterized by rapid crystallization rate and good mobility, and the prepared product is characterized by excellent comprehensive performance, environmental friendliness and content of environment-associated substances which is in line with the EU RoHS standards, thereby being applicable to electronic and electrical appliance products.

Description

Technical field: [0001] The invention belongs to the field of macromolecular materials, and in particular relates to a preparation process of polyethylene terephthalate (PET) modified engineering plastics and a PET engineering plastic composite material thereof, which is mainly used in electronic and electrical products. Background technique: [0002] PET is divided into two categories: non-engineering plastic grade and engineering plastic grade. Engineering plastic grade PET is resistant to organic solvents and has good weather resistance. The disadvantages are slow crystallization rate, difficult molding process, high molding temperature, long production cycle and poor impact performance. Generally, its processability and physical properties are improved by means of reinforcement, filling, blending, etc. The effect of glass fiber reinforcement is obvious, and the rigidity, heat resistance, chemical resistance, electrical properties and weather resistance of the resin are ...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K13/06C08K5/527C08K3/24C08K9/04
Inventor 陈宇张艳明赵欣王朝晖张宜鹏
Owner BEIJING HUATENG NEW MATERIAL CO LTD
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