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Polyester composition for preparing pipes and preparation method and application thereof

A composition, polyester technology, applied in the direction of application, tubular articles, pipes, etc., can solve the problems of low melt strength and difficult extrusion of pipes

Active Publication Date: 2010-06-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For polyethylene terephthalate PET and copolyethylene terephthalate PETG, the material particles are relatively hard, but the melt strength is relatively low, so on ordinary pipe extrusion equipment, if Pipe extrusion of PET / PETG compositions is very difficult using conventional extrusion process conditions

Method used

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  • Polyester composition for preparing pipes and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] PET polyester (produced by Sinopec Yizheng Chemical Fiber Company, brand BG85), calculated by weight ratio: 10; PETG copolyester (produced by Malaysia EASMAN company, brand GN071) ratio is 90, antioxidant 1010 and 168 (Ciba Jing Chemical production, the ratio is 2:1) 0.1% by weight. The performance is shown in Table 1.

Embodiment 2

[0032] PET polyester (produced by Sinopec Yizheng Chemical Fiber Company, brand BG85), calculated by weight ratio: 20; PETG copolyester (produced by Malaysia EASMAN company, brand GN071) ratio is 80, antioxidant 1010 and 168 (Ciba Jing Chemical production, the ratio is 2:1) 0.1% by weight. The performance is shown in Table 1.

Embodiment 3

[0034] PET polyester (produced by Sinopec Yizheng Chemical Fiber Company, brand BG85), calculated by weight ratio: 40; PETG copolyester (produced by Malaysia EASMAN company, brand GN071) ratio is 60, antioxidant 1010 and 168 (Ciba Jing Chemical production, the ratio is 2:1) 0.1% by weight. The performance is shown in Table 1.

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Abstract

The invention provides a polyester composition for preparing pipes, which mainly contains polyethylene terephthalate and copolymerized polyester, the composition can realize the stable and smooth pipe extrusion under certain extrusion process conditions, and the polyester composition not only has good comprehensive performance, but also has low material cost.

Description

technical field [0001] The present invention relates to a kind of polyester composition for preparing pipes and its preparation method and application, more specifically, relates to a kind of mainly containing polyethylene terephthalate and copolyethylene terephthalate The composition and its preparation method and application, especially the application of the composition in special resin for pipes. technical background [0002] Polyethylene terephthalate (PET) is the most common type of polyester family, with mature production technology, low price and wide range of uses. The polymer is a crystalline polyester, but crystallizes at a slower rate. High mold temperature is required when injecting pure materials into products, otherwise it is easy to shrink, resulting in poor dimensional stability of the product, deformation, and poor impact strength of the product; especially for extrusion of special materials for pipes During the process, it is easy to cause the extruded t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02B29C47/20B29C47/92B29B9/02F16L9/12B29L23/00B29C48/32B29C48/92
CPCB29C48/09B29C48/92B29C2948/92704B29C2948/92895B29C2948/92904B29C2948/92923
Inventor 尹华张师军张薇邵静波张丽英刘涛邹浩王小兰徐萌李魁闫丽丽王丹吕芸张浩陈力
Owner CHINA PETROLEUM & CHEM CORP