CN107541029A

CN107541029A - A kind of PET engineering plastics of rapid shaping and preparation method thereof

Info

Publication number: CN107541029A
Application number: CN201710887291.4A
Authority: CN
Inventors: 王明华
Original assignee: Jiangsu Crystal New Mstar Technology Ltd
Current assignee: Jiangsu Crystal New Mstar Technology Ltd
Priority date: 2017-09-27
Filing date: 2017-09-27
Publication date: 2018-01-05

Abstract

PET engineering plastics of a kind of rapid shaping and preparation method thereof, belong to engineering plastics preparing technical field, and engineering plastics comprise the following raw materials by weight percent：PET scrap feed materials 40~50%, modified glass 15~20%, fire retardant 3~7%, crystallization nucleation agent 5~10%, lubricant 3~5%, antioxidant 2~5%, chain extender 2 4%, remaining be water.Preparation principle of the present invention is clear, and processing method is simple, and PET improves PET crystallization rates because processing and forming is difficult, plays a part of plasticising and toughness reinforcing, further increases performance.

Description

A kind of PET engineering plastics of rapid shaping and preparation method thereof

Technical field

The invention belongs to engineering plastics preparing technical field, is related to a kind of engineering plastics and preparation method thereof, particularly relates to A kind of and PET engineering plastics of rapid shaping and preparation method thereof.

Background technology

Engineering plastics cheap, great competition compared with other general engineering plastics with PET excellent combination properties Property.Rigid radical on PET molecular backbones be present, therefore its heat resistance is very high；Simultaneously because the high symmetry of strand, its is electrical Can be also very excellent.But there is also crystalline rate is small, processing and forming is difficult, Mo Wengao, molding cycle are long, impact strength by PET The shortcomings of poor, which greatly limits its application.

China human mortality is numerous, and consumption produces substantial amounts of PET water bottle, but when these materials go out of use, is faced with The problem of how handling.The PET bottle of annual domestic product reaches tens billion of, therefore the recycling of PET plastic bottles is not only Can solve environmental issue, and the contradiction of Chinese PET insufficient raw materials as a kind of new raw material resources, can be alleviated.And work as PET bottle piece after recovery is extremely difficult to the requirement of engineering plastics after being granulated again, and foreign countries develop a variety of recovery System, but most of cost of investment is too high.It is domestic that typically recycled PET and other plastic blends are modified, such as with ABS, PBT, PC Deng alloy, seldom used as single engineering material.But be used as engineering material, PET typically with other auxiliary agents such as fire retardant, reinforcing agent It is used cooperatively.And PET is because processing and forming is difficult, it is necessary to improve PET crystallization rates, therefore add nucleator and crystallization promoter Crystallization rate can be improved, reduces mould temperature, while plays a part of plasticising and toughness reinforcing.

The content of the invention

The present invention is directed to difficult forming during PET engineering plastic modifications, and crystallization rate is slow, and influenceing PET engineering plastics makes The deficiencies of with performance, PET engineering plastics of a kind of rapid shaping and preparation method thereof are proposed, using new material and new technology side Method, the characteristics of rapid shaping, rapid crystallization can be reached, further improve performance.

The technical scheme is that：A kind of PET engineering plastics of rapid shaping, it is characterised in that the engineering plastics Comprise the following raw materials by weight percent：PET scrap feed materials 40~50%, modified glass 15~20%, fire retardant 3~7%, knot Brilliant nucleating agent 5~10%, lubricant 3~5%, antioxidant 2~5%, chain extender 2-4%, remaining be water.

The viscosity of the PET scrap feed materials is not more than 0.4dl/g.

The modified glass is graft copolymerization glass.

The fire retardant is the compound of Halogen phosphine nitrogenated flame retardant and bromide fire retardant.

The crystallization nucleation agent is by 1:2:Salt, inorganic salts, the crystallization promoter composition of 1.5 copolymer.

The lubricant is the composition of PE waxes and microcrystalline wax.

A kind of preparation method of the PET engineering plastics of rapid shaping, preparation method are as follows：

(1) recycled PET is crushed；

(2) the PET particles after crushing are cleaned；

(3) the PET particles after cleaning are dried；

(4) dried PET particles are stirred with other dispensings and mixed；

(5) melting extrusion is granulated；

(6) Quick-air-drying cooling is carried out to being granulated；

(7) packaging, outbound.

Beneficial effects of the present invention are：A kind of PET engineering plastics of rapid shaping provided by the invention, preparation principle are clear Clear, processing method is simple, and PET improves PET crystallization rates because processing and forming is difficult, plays the work of plasticising and toughness reinforcing With further increasing performance.

Embodiment

Below by embodiment, the invention will be further described：

Embodiment 1

A kind of PET engineering plastics of rapid shaping, engineering plastics comprise the following raw materials by weight percent：PET scrap feed materials 40%th, modified glass 15%, fire retardant 3%, crystallization nucleation agent 5%, lubricant 3%, antioxidant 2%, chain extender 2%, remaining be water.

Embodiment 2

A kind of PET engineering plastics of rapid shaping, engineering plastics comprise the following raw materials by weight percent：PET scrap feed materials 50%th, modified glass 20%, fire retardant 7%, crystallization nucleation agent 10%, lubricant 5%, antioxidant 5%, chain extender 4%, remaining be water.

Embodiment 3

A kind of PET engineering plastics of rapid shaping, engineering plastics comprise the following raw materials by weight percent：PET scrap feed materials 45%th, modified glass 18%, fire retardant 5%, crystallization nucleation agent 7%, lubricant 4%, antioxidant 3%, chain extender 3%, remaining be water.

A kind of PET engineering plastics of rapid shaping, the viscosity of PET scrap feed materials are not more than 0.4dl/g；Modified glass is to connect Branch copolymerization glass；Fire retardant is the compound of Halogen phosphine nitrogenated flame retardant and bromide fire retardant；Crystallization nucleation agent is by 1:2:1.5 The salt of copolymer, inorganic salts, crystallization promoter composition；Lubricant is the composition of PE waxes and microcrystalline wax.