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Bio-based high-rigidity polyester composition and preparation method thereof

A bio-based, high-rigidity technology, applied in the field of polymer materials, can solve the problems of rigidity and toughness reduction, and achieve the effects of reducing rigidity, improving impact performance, and reducing impact

Inactive Publication Date: 2019-05-10
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this patent still does not solve the problem of the decrease in rigidity and toughness caused by the introduction of cassava flour in the composite resin

Method used

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  • Bio-based high-rigidity polyester composition and preparation method thereof
  • Bio-based high-rigidity polyester composition and preparation method thereof

Examples

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Embodiment 1

[0041] A bio-based high-rigidity polyester composition and a preparation method thereof, the method comprising the following steps:

[0042] (1) Take each component by weight: PBT resin: 85, sorbitol 15, antioxidant 1010 0.1, antioxidant 1680.1, lubricant PETS 0.3;

[0043] (2) Feed the raw material from the feed port, melt and extrude at 280-300°C, the screw extruder speed is 500rpm, the pressure is 2MPa, after melt extrusion, the molten material is pulled by the traction device, the traction ratio is 5, pelletizing to obtain crystallization-promoting masterbatch;

[0044] (3) Weigh each component by weight: PBT resin: 60, bio-based material: 10, talcum powder: 20, toughening agent 5, crystallization-promoting masterbatch 5, antioxidant 1010 0.1, antioxidant 168 0.1 , lubricant PETS 0.3;

[0045] (4) Feed the raw materials from the feeding port, melt and extrude at 230-250°C, the screw extruder rotates at 500rpm, and the pressure is 2MPa, melts and extrudes, and granulates ...

Embodiment 2

[0047] A bio-based high-rigidity polyester composition and a preparation method thereof, the method comprising the following steps:

[0048] (1) Take each component by weight: PBT resin: 85, sorbitol 15, antioxidant 1010 0.1, antioxidant 1680.1, lubricant PETS 0.3;

[0049] (2) Feed the raw material from the feed port, melt and extrude at 280-300°C, the screw extruder speed is 500rpm, the pressure is 2MPa, after melt extrusion, the molten material is pulled by the traction device, the traction ratio is 8, pelletizing to obtain crystallization-promoting masterbatch;

[0050] (3) Weigh each component by weight: PBT resin: 48, bio-based material: 25, talcum powder: 15, toughening agent 8, crystallization promoting masterbatch 3, antioxidant 1010 0.1, antioxidant 168 0.1 , lubricant PETS 0.3;

[0051] (4) Feed the raw materials from the feeding port, melt and extrude at 230-250°C, the screw extruder rotates at 500rpm, and the pressure is 2MPa, melts and extrudes, and granulates to...

Embodiment 3

[0053] A bio-based high-rigidity polyester composition and a preparation method thereof, the method comprising the following steps:

[0054] (1) Take each component by weight: PBT resin: 85, sorbitol 15, antioxidant 1010 0.1, antioxidant 1680.1, lubricant PETS 0.3;

[0055] (2) Feed the raw material from the feed port, melt and extrude at 280-300°C, the screw extruder speed is 500rpm, the pressure is 2MPa, after melt extrusion, the molten material is pulled by the traction device, the traction ratio is 8, pelletizing to obtain crystallization-promoting masterbatch;

[0056] (3) Weigh each component by weight: PBT resin: 50, bio-based material: 20, talcum powder: 20, toughening agent 10, crystallization promoting masterbatch 3, antioxidant 1010 0.1, antioxidant 168 0.1 , lubricant PETS 0.3;

[0057] (4) Feed the raw materials from the feeding port, melt and extrude at 230-250°C, the screw extruder rotates at 500rpm, and the pressure is 2MPa, melts and extrudes, and granulates...

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Abstract

The invention relates to a bio-based high-rigidity polyester composition and a preparation method thereof. The polyester composition is prepared from, by weight, 40-70 parts of PBT (polybutylene terephthalate) resin, 10-25 parts of bio-based materials, 15-30 parts of talcum powder, 5-10 parts of flexibilizers, 1-5 parts of crystallization promoting master batches, 0.1-1 part of antioxidants and 0.1-1 part of lubricants. Compared with the prior art, the prepared polyester composition has the advantages that PBT melt of sorbitol is drawn, so that the sorbitol forms a highly oriented fibrous structure. By the aid of the melting point difference of the sorbitol and PBT, the PBT is crystallized along the fibrous sorbitol during crystallization to form a shish-kebab structure, the problem of impact reduction caused by introduction of the bio-based materials is solved, impact property is improved, and the problem of rigidity reduction caused by the bio-based materials is solved by introducingthe talcum powder.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a bio-based high-rigidity polyester composition and a preparation method thereof. Background technique [0002] Polyester and its blends have the characteristics of high heat resistance, toughness, fatigue resistance, weather resistance, electrical insulation, etc., especially polyester reinforced materials, which improve the defect of large shrinkage of polyester, and are widely used in the automotive industry And other fields, are used in structural devices such as mirror boxes and so on. [0003] Cassava flour is a bio-based material with a wide range of sources and low price. Currently, it is only used in adhesives and papermaking industries. After cassava flour is added to resins, due to its low rigidity and toughness, it has poor compatibility with resins. Both rigidity and toughness are greatly reduced. [0004] Chinese patent CN108329571A discloses a biodegradable polye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L3/02C08K13/02C08K3/34C08K5/1575
Inventor 柏莲桂李强辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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