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A kind of recycled plastic particles and its preparation method

A technology for recycled plastic particles and plastics, which is applied in the field of recycled plastic particles and their preparation, can solve the problems of limited scope and field of reuse, lack of toughness, low gloss, etc., and achieves increased interface compatibility and improved flame retardancy. Excellent performance and mechanical properties

Active Publication Date: 2019-03-05
东莞国立高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Recycled plastics are an effective way to solve the pollution caused by plastics, but recycled plastics have disadvantages such as low strength, no toughness, low gloss, and poor thermal and oxygen stability. During storage, processing and daily use, it will be prone to aging and degradation due to the effects of heat, light and oxygen, which will seriously affect the life of the product and limit the scope and field of its reuse.
Even the current advanced sorting has an impurity level of more than 5%. The presence of impurities affects the compatibility of recycled plastics and reduces the mechanical properties of recycled plastics.
[0004] In addition, the flame retardant performance of recycled plastics is quite different from that of new plastics. It is necessary to improve the flame retardant system to compensate for the flame retardant performance of recycled plastics.
Traditional general-purpose plastic flame retardants are mainly divided into two categories: inorganic hydroxides and organic halogenated hydrocarbons. However, the large amount of inorganic hydroxide flame retardants damages the mechanical properties of general-purpose plastic materials; the addition of organic halogenated hydrocarbon flame retardants The amount is small, but it produces toxic volatile gas after burning, polluting the environment

Method used

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  • A kind of recycled plastic particles and its preparation method
  • A kind of recycled plastic particles and its preparation method
  • A kind of recycled plastic particles and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Crushing waste plastic raw materials; using detergent to wash, and then rinsing with water; using electromagnetic iron remover to remove iron; using an extruder to heat, extrude and cool plastic raw materials to obtain recycled plastics; the recycled plastics include The following components: acrylonitrile-butadiene-styrene copolymer (ABS), polyethylene terephthalate (PET), polycarbonate (PC), polystyrene (PS), polypropylene (PP) ).

[0028] The recycled plastic is modified by a compatibilizer, a toughening agent, and a chain extender to obtain a modified recycled plastic; wherein, the specific process of modification is to put the recycled plastic into a compatibilizer, a toughening agent After mixing with the chain extender, knead in a continuous mixer for 15 minutes; the quality of the compatibilizer, toughening agent, and chain extender is respectively 3.2%, 2.5%, and 0.1% of the recycled plastic.

[0029] Ingredients according to the following parts by weight:

...

Embodiment 2

[0037] Crushing waste plastic raw materials; using detergent for washing, followed by rinsing with water; using electromagnetic iron remover for iron removal treatment; using extruder to heat, extrude and cool plastic raw materials to obtain recycled plastics; the recycled plastics include The following components: polyethylene terephthalate (PET) and polycarbonate (PC).

[0038] The recycled plastic is modified by a compatibilizer, a toughening agent, and a chain extender to obtain a modified recycled plastic; wherein, the specific process of modification is to put the recycled plastic into a compatibilizer, a toughening agent After mixing with the chain extender, knead in a continuous mixer for 20 minutes; the quality of the compatibilizer, toughening agent, and chain extender are respectively 5.5%, 3%, and 0.3% of the recycled plastic.

[0039] Ingredients according to the following parts by weight:

[0040]

[0041]

[0042] Stir all the above-mentioned ingredients ...

Embodiment 3

[0048] Crushing waste plastic raw materials; using detergent to wash, and then rinsing with water; using electromagnetic iron remover to remove iron; using an extruder to heat, extrude and cool plastic raw materials to obtain recycled plastics; the recycled plastics include The following components: acrylonitrile-butadiene-styrene copolymer (ABS), polyethylene terephthalate (PET), polycarbonate (PC), polystyrene (PS), polypropylene (PP) ), or have some of the above-mentioned components.

[0049] The recycled plastic is modified by a compatibilizer, a toughening agent, and a chain extender to obtain a modified recycled plastic; wherein, the specific process of modification is to put the recycled plastic into a compatibilizer, a toughening agent After mixing with the chain extender, knead in a continuous mixer for 30 minutes; the quality of the compatibilizer, toughening agent, and chain extender are respectively 8.1%, 3.2%, and 0.5% of the recycled plastic.

[0050] Ingredient...

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PUM

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Abstract

The invention discloses a regenerated plastic particle. The regenerated plastic particle comprises the following components in parts by weight: modified recycled plastic, intumescent flame retardant, barium sulfate, graphene, antioxidant, brightener and plasticizer. According to the invention, the recycled plastic is modified by in-process compatilizer, toughener and chain extender, so that the performance of the recycled plastic is improved to be used for manufacturing of the regenerated plastic and have favorable mechanical property; the interfacial compatibility of the regenerated plastic particle is increased, the mechanical property of the composite material is enhanced, and the corrosion to manufacturing equipment is reduced; a holmium-containing composite flame retardant system is complexed with the intumescent flame retardant to enhance the flame retardancy of the regenerated plastic, the flame retardant efficiency is high, and the deficiency of the regenerated plastic can be compensated for; and the final product obtained by the invention has excellent mechanical property, and is low-toxicity and environment-friendly.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a recycled plastic particle and a preparation method thereof. Background technique [0002] Plastic is an important product in polymer synthetic materials. While the plastic industry meets people's life and social development, social and environmental problems caused by "white pollution" caused by the sharp increase in plastic waste are also becoming more and more serious. "White pollution" has begun to cause headaches for people. Lunch boxes that do not rot or decompose cannot be effectively recycled, and domestic plastic waste cannot be disposed of. The sharp increase of plastic waste and the social and environmental problems caused by it are placed in front of people, where people live and live all over the world. [0003] Recycled plastics are an effective way to solve the pollution caused by plastics, but recycled plastics have disadvantages such as low strength, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L55/02C08L69/00C08L25/06C08L23/12C08L85/02C08L51/04C08L67/00C08K13/02C08K3/30C08K3/04C08K3/32C08K5/3492
CPCC08K2201/014C08L23/12C08L25/06C08L55/02C08L67/02C08L69/00C08L2201/02C08L2205/025C08L2205/035C08L2205/06C08L2205/08C08L2207/20C08L85/02C08L51/04C08L67/00C08K13/02C08K2003/3045C08K3/04C08K2003/323C08K5/34922C08L51/003
Inventor 乔志龙罗文平
Owner 东莞国立高分子材料有限公司
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