PC/PET alloy and manufacture method thereof

A technology of alloy and weight ratio, which is applied in the field of PC/PET alloy and its preparation, can solve the problems of low impact strength and poor heat resistance, and achieve the effects of low cost, excellent physical and mechanical properties, and simple preparation process

Inactive Publication Date: 2007-10-17
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PET used alone has disadvantages such as poor heat resistance and low impact strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The weight ratio of PC is 85.1% (the following are all weight ratios), PET 5%, 1010 / 168 0.2 / 0.2%, toughening agent C223A 8%, compatibilizer 1%, other 0.5%. The mixed material is put into the hopper of the twin-screw extruder, melted and blended, extruded and granulated to form a composite material. Among them, the temperature settings of each heating zone of the screw are: zone 1 temperature: 250°C; zone 2: 255°C; zone 3: 255°C; zone 4: 250°C; head: 245°C; residence time 2-3min. The pressure is 15MPa.

Embodiment 2

[0034] The weight ratio of PC is 79.6% (the following are all weight ratios), PET10%, 1010 / 168 0.2 / 0.2%, toughening agent C223A8%, compatibilizer 1.5%, and other 0.5%. The mixed material is put into the hopper of the twin-screw extruder, melted and blended, extruded and granulated to form a composite material. Among them, the temperature settings of each heating zone of the screw are: zone 1 temperature: 250°C; zone 2: 255°C; zone 3: 255°C; zone 4: 250°C; head: 245°C; residence time 2-3min. The pressure is 15MPa.

Embodiment 3

[0036] The weight ratio of PC is 76.6% (the following are all weight ratios), PET13%, 1010 / 168 0.2 / 0.2%, toughening agent C223A8%, compatibilizer 1.5%, and other 0.5%. The mixed material is put into the hopper of the twin-screw extruder, melted and blended, extruded and granulated to form a composite material. Among them, the temperature settings of each heating zone of the screw are: zone 1 temperature: 250°C; zone 2: 255°C; zone 3: 255°C; zone 4: 250°C; head: 245°C; residence time 2-3min. The pressure is 15MPa.

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PUM

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Abstract

The invention discloses a PC/PET alloy and its producing method with a composite weight ratio (%): PC 65-87%; PET5-20%; elasticizer 6-10%; compatilizer 1-3%; antioxidant 0.2-0.6%; other assistant agents 0.1-2%. The inventive material has a high impacting strength, a high module, a high rigidity, a high surface gloss and a low density, which improves the PC resistance to solvent, abrasion resistance, resistance to stress cracking and processing fluidity. The plastic producing method contains following steps: firstly mixing the material according to above proportion, then entering into the plastic extruder at 245-280 DEG C, prilling, getting PC/PET alloy.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a PC / PET alloy and a preparation method thereof. Background technique [0002] PC (polycarbonate) is a kind of polymer containing carbonate in the molecular chain. It has particularly good impact strength, thermal stability and gloss. It is one of the five general-purpose engineering plastics. Its output and consumption are second only to Nylon engineering plastics ranked second. However, polycarbonate has the disadvantages of high melt viscosity, difficult molding process and poor solvent resistance. [0003] PET (polyethylene terephthalate) is a semi-crystalline material with very good chemical stability, mechanical strength, electrical insulation properties and thermal stability, especially excellent oil resistance and solvent resistance. PET used alone has disadvantages such as poor heat resistance and low impact strength. Contents of the invention [0004] The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08K5/524B29C47/40B29C47/92B29B9/12C08L67/03B29C48/92B29C48/40
CPCB29C2947/92704B29C48/92B29C2948/92704B29C48/40
Inventor 徐东贺永李红敏
Owner SHENZHEN KEJU NEW MATERIAL
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