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Composite material based on polyethylene glycol terephthalate and preparation method thereof

A technology of polyethylene terephthalate and composite materials, applied in the field of modified polyethylene terephthalate, can solve the problems of high finished product molding rate, poor crystallization performance, poor processing performance of PET materials, etc.

Active Publication Date: 2017-09-08
宁波萱群材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is to provide a composite material based on polyethylene terephthalate, which overcomes the defects of poor processability of PET materials caused by poor crystallization properties of conventional PET materials
[0012] The technical problem to be solved by the present invention is also to provide a method for preparing a composite material based on polyethylene terephthalate. The method for preparing a composite material based on polyethylene terephthalate in the present invention overcomes the crystallization of conventional PET materials. Poor performance leads to poor processing performance of PET materials, good temperature resistance of finished products, small eccentricity and non-fitting size, high molding rate of finished products

Method used

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  • Composite material based on polyethylene glycol terephthalate and preparation method thereof

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Effect test

Embodiment 1

[0036] A composite material based on polyethylene terephthalate and a preparation method thereof, comprising the steps of:

[0037] (1) Recrystallization treatment: Inhale 90 parts of PET materials with a vacuum pump in parts by weight, preheat on a fluidized bed, the preheating temperature is 80°C, and the preheating time is 15min, then enter the crystallization tank, stir and crystallize, the temperature is 120°C , the crystallization time is 4h, and PET material 1 is obtained;

[0038](2) Modification treatment: by weight, get 80 parts of PET materials, 5 parts of polyolefin elastomers, 6 parts of aluminum oxide, 6 parts of talcum powder, tetrakis [β-(3,5-di-tert-butyl- 1 part of 4-hydroxyphenyl)propionic acid] pentaerythritol ester (Irganox1010), 1 part of 2-(2H-benzotriazol-2-yl)-4,6-di-tert-amylphenol (Tinuvin 328), chlorinated 1 part of polyethylene wax enters the twin-screw extruder, melts and blends, extrudes and granulates, and the processing temperature is divided ...

Embodiment 2

[0041] A composite material based on polyethylene terephthalate and a preparation method thereof, comprising the steps of:

[0042] (1) Recrystallization treatment: Inhale 95 parts of PET materials with a vacuum pump in parts by weight, preheat on a fluidized bed, the preheating temperature is 80°C, and the preheating time is 15min, then enter the crystallization tank, stir and crystallize, the temperature is 120°C , the crystallization time is 4h, and PET material 1 is obtained;

[0043] (2) Modification treatment: by weight, get 90 parts of PET materials, 3 parts of polyolefin elastomers, 2 parts of aluminum oxide, 2 parts of sodium benzoate, tetrakis [β-(3,5-di-tert-butyl- 1 part of 4-hydroxyphenyl) propionic acid] pentaerythritol ester (Irganox1010), 1 part of 2-(2H-benzotriazol-2-yl)-4,6-di-tert-amylphenol (Tinuvin 328), chlorinated 1 part of polyethylene wax enters the twin-screw extruder, melts and blends, extrudes and granulates, and the processing temperature is divi...

Embodiment 3

[0046] A composite material based on polyethylene terephthalate and a preparation method thereof, comprising the steps of:

[0047] (1) Recrystallization treatment: in parts by weight, suck 99.5 parts of PET materials with a vacuum pump, preheat on a fluidized bed, the preheating temperature is 80°C, and the preheating time is 15min, then enter the crystallization tank, stir and crystallize, and the temperature is 120°C , the crystallization time is 4h, and PET material 1 is obtained;

[0048] (2) Modification treatment: by weight, take 98 parts of PET materials, 1 part of polyolefin elastomer, 0.3 part of magnesium carbonate, 0.4 part of sodium benzoate, tetrakis[β-(3,5-di-tert-butyl-4- 0.1 part of hydroxyphenyl) propionic acid] pentaerythritol ester (Irganox1010), 0.1 part of 2-(2H-benzotriazol-2-yl)-4,6-di-tert-amylphenol (Tinuvin 328), 0.1 part of polyethylene wax Parts, into the twin-screw extruder, melt blending, extrusion granulation, processing temperature is divided ...

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Abstract

The invention discloses a composite material based on polyethylene glycol terephthalate and a preparation method thereof. The composite material comprises the following raw materials in parts by weight: 90-99.5 parts of a PET material I and 0.5-10 parts of a PET material II. The PET material I is prepared from the following steps of: pre-heating a PET material, wherein the pre-heating temperature is 60-100 DEG C and the pre-heating time is 2-6h, then feeding the PET material into a crystallization kettle to be stirred and crystallized to obtain the PET material I, wherein the temperature is 110-160 DEG C and the crystallization time is 2-6h; the PET material is prepared from the following steps: feeding 80-98 parts by weight of the PET material, 1-20 parts of a polyolefin elastomer, 0.02-6 parts of a nucleating agent and 0.02-5 parts of an auxiliary agent into a twin-screw extruder; melting and blending the components; and extruding and granulating the components to obtain the PET material II. The composite material based on polyethylene glycol terephthalate prepared by the method has the characteristics of good crystallization property, high crystallization rate and moderate viscosity, has a good processing characteristic and an excellent comprehensive performance, and meets the demand on a high-performance PET vacuum blood collection tube.

Description

technical field [0001] The invention relates to a modified polyethylene terephthalate, in particular to a composite material based on polyethylene terephthalate and a preparation method thereof. Background technique [0002] PET (Polyethylene terephthalates) is called polyethylene terephthalate. It is mainly composed of three elements: C, H and O. It is a milky white or light yellow highly crystalline polymer with a smooth and shiny surface. It has good creep resistance, fatigue resistance and friction resistance, low wear and high hardness, and has the greatest toughness among thermoplastics. Good electrical insulation performance, less affected by temperature. Non-toxic, weather resistance, good stability against chemicals, low water absorption, resistance to weak acids and organic solvents. In the anti-permeability of gases such as oxygen, carbon dioxide and water vapor, PET has better performance than HDPE and PP, and has excellent barrier properties. [0003] Disposa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L23/08C08L23/28C08K13/02C08K3/22C08K3/34C08K3/26C08K5/098B29C47/92B29C48/92
CPCB29C48/92B29C2948/92704C08K2003/2227C08K2003/267C08L67/02C08L2201/08C08L2203/02C08L2203/18C08L2205/025C08L2205/035C08L2205/24C08L23/0815C08L23/286C08K13/02C08K3/22C08K3/34C08K5/1345C08K5/3475C08K5/098C08L23/06C08K3/26
Inventor 范鑫群
Owner 宁波萱群材料科技有限公司
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