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Halogen-free fire-resistant engineering plastics using waste PET bottle chips as raw material and preparation method thereof

A technology of engineering plastics and bottle flakes, which is applied in the field of halogen-free flame-retardant engineering plastics and its preparation, can solve the problems of difficult engineering plastics recycling, material loss of mechanical properties, low mechanical strength, etc., and achieves no need for mold temperature molding processing and convenient preparation , the effect of reducing pollution

Active Publication Date: 2012-05-23
GUANGZHOU SUPER DRAGON ENG PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The primary purpose of the present invention is to provide a kind of halogen-free flame-retardant engineering plastics with discarded PET bottle flakes as raw material. It is very easy to degrade in the process of multiple thermal processing, so that the material loses its mechanical properties, and it is difficult to use it as a defect in the recycling of engineering plastics, so that it can be recycled with high performance, showing outstanding cost performance and environmental protection recycling advantages; another feature of the present invention is that Overcoming the disadvantage of low mechanical strength of waste PET, the prepared halogen-free flame-retardant composite material not only meets the requirements of actual use in terms of flame retardancy, electrical and thermal properties, but also meets the needs of engineering in terms of mechanical strength

Method used

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  • Halogen-free fire-resistant engineering plastics using waste PET bottle chips as raw material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] (1) The waste PET bottle flakes were air-dried at 115°C for 4 hours;

[0060] (2) 48g of dried discarded PET bottle flakes (intrinsic viscosity is 0.5dl / g), 5g of toughening agent maleic anhydride grafted polyolefin elastomer, phosphorus-based flame retardant resorcinol polycondensed aryl phosphate 8g, nitrogen flame retardant melamine 6g, nanoclay (particle diameter is 100nm, selects Nanocor company I.28E) 2.5g, nucleating agent sodium benzoate 0.3g and antioxidant β-(4-hydroxyl-3,5- 0.2 g of n-octadecyl di-tert-butylphenyl)propionate was sequentially added into the mixer, and stirred and mixed for 3 minutes at a speed of 400 rpm to obtain a mixture;

[0061] (3) Add the mixture obtained in step (2) into a twin-screw extruder, and then pass 30 g of alkali-free long glass fibers treated with a reinforcing agent siloxane coupling agent through a glass fiber dryer (drying temperature 160 ° C, drying cylinder length 1.5m) after drying, it is introduced into the extruder f...

Embodiment 2

[0080] (1) The waste PET bottle flakes were air-dried at 115°C for 4 hours;

[0081] (2) 36g of dried discarded PET bottle flakes (intrinsic viscosity is 0.4dl / g), 8g of acrylate-glycidyl-ethylene copolymer with epoxy functional group as toughening agent, phosphorus-based flame retardant triphenyl phosphate Ester 8g, nitrogen flame retardant ammonium polyphosphate 6g, nanoclay (particle diameter is 50nm, selects Nanocor company I.28E) 1.5g, nucleating agent talcum powder 0.3g and antioxidant tetrakis (3,5-di 0.2 g of tert-butyl-4-4-hydroxyphenyl) was successively added into a mixer, and stirred and mixed for 3 minutes at a speed of 400 rpm to obtain a mixture;

[0082] (3) Add the mixture obtained in step (2) into a twin-screw extruder, and then pass 40 g of alkali-free long glass fibers treated with a reinforcing agent siloxane coupling agent through a glass fiber dryer (drying temperature 180 ° C, drying cylinder length 0.5m) after drying, it is introduced into the extruder...

Embodiment 3

[0101] (1) Dry the discarded PET bottle flakes at 100° C. for 6 hours;

[0102] (2) 62g of dried waste PET bottle flakes (intrinsic viscosity is 0.6dl / g), 3g of acrylate-glycidyl-ethylene copolymer with epoxy functional group as toughening agent, 3g of phosphorus-based flame retardant tricresyl phosphate Ester 5g, nitrogen flame retardant melamine cyanurate 8g, nanoclay (particle diameter is 80nm, select Nanocor company I.28E) 1.5g, nucleating agent zinc oxide 0.3g and antioxidant three (2,4-di 0.2 g of tert-butylphenyl) phosphite was sequentially added to the mixer, and stirred and mixed for 3 minutes at a speed of 400 rpm to obtain a mixture;

[0103] (3) Add the mixture obtained in step (2) into the twin-screw extruder, and then introduce 20 g of the short glass fiber of the reinforcing agent after drying (drying at 150°C for 2 hours) into the extruder from the glass fiber port, and melt extrude After granulation, the extruded material is cooled, air-dried, pelletized, and...

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Abstract

The invention discloses halogen-free fire-resistant engineering plastics using waste PET bottle chips as a raw material, a preparation method thereof and application thereof. The plastics consists of the following components in percentage by weight: 36 to 65 percent of waste PET bottle chips, 15 to 40 percent of reinforcing agent, 3 to 8 percent of toughening agent, 5 to 8 percent of phosphorous fire retardant, 2 to 8 percent of nitrogen fire retardant, 0 to 4 percent of nanometer clay, 0 to 0.5 percent of nucleating agent and 0 to 0.5 percent of antioxidant. The halogen-free fire-resistant engineering plastics are prepared by using the waste PET bottle chips as the raw materials, thereby contributing to environmental protection, reducing pollution of waste bottles and making recycled materials have high performance; in addition, because the phosphorous-nitrogen fire-resistant system and the nanometer clay are combined, the compound material is halogen free and fire resistant and simultaneously the fire-resistant material has a higher CTI value; and thus, the engineering plastics are applied in a field of electric products.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a halogen-free flame-retardant engineering plastic using waste PET (polyethylene terephthalate) bottle flakes as a raw material and a preparation method thereof. Background technique [0002] Usually mineral water bottles are made of PVC or PET, and carbonated beverage bottles such as Coca-Cola, Pepsi, Sprite, etc. are made of PET. With the vigorous development of the beverage industry, my country's PET bottles account for more than 50% of the world, with an annual consumption of about 1.5 million tons. The huge consumption makes my country's annual waste PET as high as one million tons, becoming the main source of waste plastics. The huge waste, destroying the ecological environment, and not in line with the scientific concept of sustainable development, the recycling of waste PET has become a topic of concern to the domestic and foreign scientific and techn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08K13/06C08K9/06C08K7/14C08K5/3492C08K3/34C08K5/523C08K3/32C08K13/04C08K7/06C08K5/521C08K7/18B29C47/92B29C48/92
Inventor 郝建鑫郝源增任萍余鹏
Owner GUANGZHOU SUPER DRAGON ENG PLASTICS
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