Hydrolysis-resistant aliphatic polyester resin composition and preparation method thereof

A polyester resin and aliphatic technology, applied in the field of hydrolysis-resistant aliphatic polyester resin composition and its preparation, can solve the problems of serious yellowing of products, harmful to human body, increase in melt viscosity, etc., and achieve excellent hydrolysis-resistant performance. Effect

Active Publication Date: 2017-11-21
中科启程新材料科技(海南)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application of a large number of carbodiimide compounds has the following main disadvantages: high price, increased melt viscosity during use, poor thermal stability, serious yellowing of products, and harmful odors to the human body during processing

Method used

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  • Hydrolysis-resistant aliphatic polyester resin composition and preparation method thereof
  • Hydrolysis-resistant aliphatic polyester resin composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 100 parts of polyester resin, 1 part of monoepoxy end-capping agent, 0.05 part of end-capping catalyst and 1 part of hydrolysis stabilizer are dry-blended uniformly, melt-blended by a twin-screw extruder, and extruded to obtain blended chips. The feed inlet temperature of the extruder was set at 180°C, the rest of the blending temperature was set at 210°C, and the screw speed was set at 300 rpm. The changes in carboxyl group concentration and MFR at the end of the obtained resin before and after hydrolysis were analyzed. The results are shown in Table 1.

Embodiment 2

[0044] 100 parts of polyester resin, 5 parts of mono-epoxy end-capping agent, 0.5 parts of end-capping catalyst and 1 part of hydrolysis stabilizer are dry-blended uniformly, melt-blended by twin-screw extruder, and extruded to obtain blended chips. The feed inlet temperature of the extruder was set at 180°C, the rest of the blending temperature was set at 210°C, and the screw speed was set at 300 rpm. The changes in carboxyl group concentration and MFR at the end of the obtained resin before and after hydrolysis were analyzed. The results are shown in Table 1.

Embodiment 3

[0046] 100 parts of polyester resin, 10 parts of monoepoxy end-capping agent, 2 parts of end-capping catalyst and 0.5 part of hydrolysis stabilizer are dry-blended uniformly, melt-blended by twin-screw extruder, and extruded to obtain blended chips. The feed inlet temperature of the extruder was set at 180°C, the rest of the blending temperature was set at 210°C, and the screw speed was set at 300 rpm. The changes in carboxyl group concentration and MFR at the end of the obtained resin before and after hydrolysis were analyzed. The results are shown in Table 1.

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Abstract

The invention discloses a hydrolysis-resistant aliphatic polyester resin composition, which comprises the following components in parts by weight: 100 parts of aliphatic polyester resin, 1 to 10 parts of epoxy end-capping agent, and 0.05 to 10 parts of end-capping catalyst 2 parts and 0.5 to 5 parts of hydrolysis-resistant stabilizer. The invention also provides a preparation method of the composition. The aliphatic polyester resin composition prepared in the present invention has excellent hydrolysis resistance compared with polyester as a base resin.

Description

technical field [0001] The invention relates to the field of polyester resins, in particular to a hydrolysis-resistant aliphatic polyester resin composition and a preparation method thereof. Background technique [0002] All kinds of traditional plastic products have brought great convenience to people's production and life, but because they are difficult to degrade in nature, the environmental pollution caused by their disposal has become an increasingly serious problem. In recent years, all kinds of biodegradable aliphatic polyesters have gradually attracted people's attention, and their alternative applications to traditional plastic products have also been greatly developed. At present, aliphatic polyester products are mainly used in single-use products such as lunch boxes, packaging products, and agricultural films. Such products are usually used for a short period of time and can be naturally degraded in the natural environment within a few months after being discarded...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08K5/1515C08K5/29C08K5/19
Inventor 季君晖赵剑张长安
Owner 中科启程新材料科技(海南)有限公司
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