Polylactic acid composition and polylactic acid product

A technology of polylactic acid and composition, which is applied in the field of polylactic acid composition and polylactic acid products, can solve the problems of low elongation at break, no improvement in blow molding processability, low melt strength, etc., and achieve good comprehensiveness Mechanical properties, the effect of improving blow molding processing performance

Inactive Publication Date: 2012-08-01
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
View PDF4 Cites 30 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method of modifying polylactic acid by physical blending can improve the processing performance of polylactic acid, but the compatibility between the modified material and polylactic acid will affect the stability of the obtained polylactic acid blown film resin; and Using this method of blending polylactic acid

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polylactic acid composition and polylactic acid product

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0065] The present invention provides a polylactic acid product, which is made of a polylactic acid resin comprising the polylactic acid composition described in the above technical solution or the polylactic acid composition obtained by the preparation method described in the above technical solution and additives. The present invention uses the polylactic acid composition described in the above technical scheme or the polylactic acid composition obtained by the preparation method described in the above technical scheme as the main raw material, and additives are added to the polylactic acid composition to be processed into a polylactic acid product. The present invention does not have special restrictions on the preparation process of polylactic acid products. The technical solution for preparing polymer material products well-known to those skilled in the art can be used. For example, plastic products can be obtained by plasticizing methods, or blown films can be used. The fi...

Example Embodiment

[0076] Example 1

[0077] In parts by weight, 60 parts of polylactic acid, 20 parts of polybutylene adipate-terephthalate, 10 parts of polybutylene succinate, 4 parts of tributyl citrate, 5 parts of calcium carbonate , 0.1 part of benzoyl peroxide, 0.1 part of polyepoxymethyl acrylate, 0.1 part of zinc stearate, 0.4 part of niacinamide, 0.1 part of light stabilizer GW540, 0.1 part of antioxidant 1010 and 0.1 part of monolaurel After the glycerides are dried, the above components are fully mixed in a mixer, and then the resulting mixture is pelletized in a twin-screw extruder to obtain polylactic acid resin pellets. The parameters of the twin-screw extruder are set as: feeding The port temperature is 165°C, the first heating zone temperature is 171°C, the second heating zone temperature is 171°C, the third heating zone temperature is 172°C, and the die temperature is 171°C.

[0078] In the present invention, the obtained polylactic acid resin pellets are prepared in an injection mo...

Example Embodiment

[0081] Example 2

[0082] In parts by weight, 65 parts of polylactic acid, 5 parts of polybutylene terephthalate, 25 parts of polybutylene succinate, 4 parts of polyethylene glycol, 0.2 parts of benzene peroxide Formyl, 0.1 part of polyepoxy methyl acrylate, 0.4 part of niacinamide, 0.1 part of light stabilizer GW540, 0.1 part of antioxidant 1010 and 0.1 part of glyceryl monolaurate are dried, and fully dried in a mixer After mixing, the obtained mixture is pelletized in a twin-screw extruder to obtain polylactic acid resin pellets. The parameters of the twin-screw extruder are set as follows: the temperature of the feeding port is 165°C, and the temperature of the first heating zone is 171°C. The second heating zone temperature is 171°C, the third heating zone temperature is 172°C, and the die temperature is 171°C.

[0083] In the present invention, the obtained polylactic acid resin pellets are prepared in an injection molding machine. The parameters of the injection molding mac...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Elastic modulusaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention provides a polylactic acid composition and a polylactic acid product. The polylactic acid composition comprises the following components by weight percent: 50 to 80 percent of polylactic acid, 0 to 35 percent of adipic acid-polybutylene terephthalate, 0 to 35 percent of poly(butylene succinate), 0.05 to 0.5 percent of peroxide, 0.05 to 0.5 percent of chain extendor and 3 to 15 percent of plasticizer, wherein the content of the adipic acid-polybutylene terephthalate and the content of the poly(butylene succinate) are not 0 percent. The mechanical properties such as melt strength, elongation at break, tenacity and anti-tear strength of the polylactic acid composition provided by the invention are improved, so that the polylactic acid composition with better comprehensive mechanical properties can be obtained, and the polylactic acid composition has more stable processability and better film forming stability.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a polylactic acid composition and polylactic acid products. Background technique [0002] At present, plastic products have penetrated into all fields of the national economy, and the annual consumption of plastic products in the world has reached 300 million tons. However, the environmental pollution and energy crisis brought about by the widespread use of plastics are also becoming more and more serious. The garbage produced by plastics has brought huge negative impacts on the earth's ecological environment, food production, and water resources. In the 21st century, the pollution caused by plastics has become a major scientific and technological problem, environmental problem and economic problem faced by countries all over the world. In order to solve various problems caused by the use of plastics, biodegradable polymer materials have been developed in the prior art. [000...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08L67/04C08L67/02C08L33/14C08K5/04C08K5/14C08K5/1515
Inventor 黄绍永陈学思张宝李杲庄秀丽
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap