Preparation method of environment-friendly halogen-free flame-retardant polyethylene glycol terephthalate molded plastic

A technology of polyethylene terephthalate and ethylene phthalate, which is applied in the field of polymer material preparation, can solve the problems of random diffusion of harmful elements, non-environmental protection materials that are harmful, and affect the environment.

Inactive Publication Date: 2013-08-21
CHANGSHU YONGXIANG ELECTROMECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after being discarded, these materials generally contain different levels of metals, heavy metals, halogens and other elements during processing, which leads to the random diffusion of harmful elements and ultimately affects the environment. Therefore, the use of non-environmental protection materials is extremely harmful.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] First put 75 parts of polyethylene terephthalate, which has a melting point of 255°C and an intrinsic viscosity index of 0.55dl / g, weighed in parts by weight, into a drying device and dry at 122°C for 9.5 hours to obtain a dry material and Put it into a high-speed mixer; then weigh 7 parts of copolymerized polypropylene resin with a melting point of 160°C, 20 parts of saturated polyester resin with a softening point of 130°C, and polyethylene terephthalate in the polyester segment. 11 parts of polyester-polyether copolymer with glycol ester and polyether segment as polytetramethylene ether, 19 parts of aluminum hypophosphite, 18 parts of montmorillonite, tris(2.4-di-tert-butylphenyl phosphite) Base) 1 part of ester, 25 parts of carbon nanofibers and 1.3 parts of carbon black produced by the tank method are put into a high-speed mixer and mixed with the dry material. The speed of the high-speed mixer is 575n / min, and the mixing time is 7.5min. The mixture; then the mixtu...

Embodiment 2

[0018] First put 63 parts of polyethylene terephthalate, which has a melting point of 255°C and an intrinsic viscosity index of 0.55dl / g, weighed in parts by weight, into a drying device and dry at 122°C for 9.5 hours to obtain a dry material and Throw it into a high-speed mixer; then weigh 13 parts of copolymerized polypropylene resin with a melting point of 160°C, 23 parts of saturated polyester resin with a softening point of 130°C, and polyethylene terephthalate in the polyester segment. 14 parts of polyester-polyether copolymer with glycol ester and polyether segment as polytetramethylene ether, 12 parts of aluminum hypophosphite, 21 parts of montmorillonite, tris(2.4-di-tert-butylbenzene) Base) 0.7 parts of ester, 12 parts of carbon nanofibers and 1.9 parts of carbon black produced by the tank method are put into a high-speed mixer and mixed together with the dry material. The speed of the high-speed mixer is 575n / min, and the mixing time is 7.5min. The mixture; then the...

Embodiment 3

[0020] First put 72 parts of polyethylene terephthalate weighed in parts by weight with a melting point of 255°C and an intrinsic viscosity index of 0.55dl / g into a drying device and dry at 122°C for 9.5 hours to obtain a dry material and Put it into a high-speed mixer; then weigh 9 parts of copolymerized polypropylene resin with a melting point of 160°C, 15 parts of saturated polyester resin with a softening point of 130°C, and polyethylene terephthalate in the polyester segment. 6 parts of polyester-polyether copolymer with glycol ester and polyether segment as polytetramethylene ether, 22 parts of aluminum hypophosphite, 27 parts of montmorillonite, tris(2.4-di-tert-butylbenzene Base) 0.9 parts of ester, 17 parts of carbon nanofibers and 1.5 parts of carbon black produced by the tank method are put into a high-speed mixer and mixed with the dry material. The speed of the high-speed mixer is 575n / min, and the mixing time is 7.5min. The mixture; then the mixture is introduced...

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Abstract

The invention relates to a preparation method of environmental-friendly halogen-free flame-retardant polyethylene glycol terephthalate molded plastic, and belongs to the technical field of preparation of high molecular materials. The preparation method comprises the following steps: putting 63-75 parts of polyethylene glycol Terephthalate to a drying device to be dried to obtain a dried material which is put into a high speed mixer; then, putting 7-13 parts of polyolefin, 15-23 parts of amorphous polyester resin, 6-14 parts of a flexibilizer, 12-22 parts of phosphate, 18-27 parts of a filler, 0.7-1.2 parts of an antioxygen, 12-25 parts of a nanofiber and 1.3-1.9 parts of carbon black to the high speed mixer to be mixed with the dried material; and guiding the mixture in a twin-screw extruder to carry out melt extrusion, and cooling, granulating and drying to obtain a finished product, wherein the screw temperatures of zones I to X are controlled as follows: 210 DEG C, 215 DEG C, 225 DEG C, 235 DEG C, 245 DEG C, 255 DEG C, 265 DEG C, 265 DEG C, 265 DEG C and 265 DEG C. The tensile strength is 116-132 MPa, the bending strength is 205-226 MPa, the notch impact strength is 58-78 j / m, the fire resistance reaches V-0(UL-94-3.0mm), and the thermal distortion temperature is 220-240 DEG C. The wasted molded plastic does not damage the environment.

Description

technical field [0001] The invention belongs to the technical field of polymer material preparation, and in particular relates to a preparation method of an environment-friendly halogen-free flame-retardant polyethylene terephthalate molding compound. Background technique [0002] Glass fiber reinforced polyethylene terephthalate molding compound has the advantages of high strength and good performance, so it is widely used in the fields of automobile and construction. However, after being discarded, these materials generally contain different levels of metals, heavy metals, halogens and other elements during processing, which leads to the random diffusion of harmful elements and ultimately affects the environment. Therefore, the use of non-environmentally friendly materials is extremely harmful. Contents of the invention [0003] The task of the present invention is to provide a preparation method of an environmentally friendly halogen-free flame-retardant polyethylene te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L23/14C08L67/00C08K13/04C08K7/06C08K3/32C08K3/34C08K5/526C08K3/04B29C47/92B29C48/92
CPCB29C48/40B29C48/875B29C48/92B29C2948/92704B29C2948/92885
Inventor 方云祥
Owner CHANGSHU YONGXIANG ELECTROMECHANICAL
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