Composite material of poly lactic acid / natural faric, and production method

A natural fiber and composite material technology, applied in natural fiber reinforced modified polylactic acid composite materials and its production field, can solve the problems of high mechanical equipment requirements, low production efficiency, and difficulty in industrialization, and achieve high production efficiency and good molding processing Sexuality and simple operation

Inactive Publication Date: 2007-07-25
TORAY FIBER RES INST(CHINA) CO LTD
View PDF4 Cites 84 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above inventions all have the disadvantages of complex operation, high require

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
  • Composite material of poly lactic acid / natural faric, and production method
  • Composite material of poly lactic acid / natural faric, and production method
  • Composite material of poly lactic acid / natural faric, and production method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0014] Example 1

[0015] Accurately weigh 70 parts of polylactic acid and 0.3 parts of antioxidant tetra{β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid} pentaerythritol and add them to the extruder from the main hopper. At the same time, 30 parts of ramie short fibers are added to the extruder through the side feeder to be extruded and granulated, and the product is obtained after drying. Its mechanical properties are shown in Table 1 in 1 # As shown, for comparison, 0 in Table 1 # The mechanical properties of pure polylactic acid are listed.

[0016] Differential scanning calorimetry (DSC) was used to measure the crystallization performance of the composite material. The first cooling and the second heating curve were taken, and the crystallization peak (crystallization temperature) and half-width of the crystallization peak were used to characterize the crystallization rate. The higher the temperature and the narrower the half-width, the greater the crystallization rate. T...

Example Embodiment

[0019] Example 2

[0020] The cotton staple fiber is surface treated with coupling agent γ-glycidoxypropyltrimethoxysilane. The specific method is as follows: prepare a 1wt% coupling agent aqueous solution, drop a certain amount of concentrated hydrochloric acid to adjust the pH of the solution to pH 3 to 4, The cotton fiber is soaked in the solution, and after soaking for two hours, it is taken out and placed in a blast oven at 80°C for drying.

[0021] Accurately weigh 90 parts of polylactic acid and 0.3 parts of antioxidant tetra{β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid} pentaerythritol and add them from the main hopper to the extruder. At the same time, 10 parts of the treated cotton staple fiber is added to the extruder through the side feeder for extrusion granulation, and the product is dried after drying. The rest is the same as in Example 1, and its mechanical properties are shown in Table 1 in 2 # As shown, the crystallization properties are shown in Table 2 i...

Example Embodiment

[0024] Example 3

[0025] Ramie staple fiber is surface treated with coupling agent γ-glycidoxypropyltrimethoxysilane, and the soaking time is 0.5 hours. The specific treatment method is the same as the treatment of cotton fiber in Example 2.

[0026] Accurately weigh 80 parts of polylactic acid and 0.2 parts of antioxidant tetra{β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid} pentaerythritol and add them to the extruder from the main hopper. At the same time, 20 parts of the treated ramie short fiber was added to the extruder through the side feeder for extrusion and granulation, and the product was dried after drying. The rest are the same as in Example 1. The mechanical properties are shown in Table 1 in 3 # As shown, the crystallization properties are shown in Table 2 in 3 * Shown.

[0027] It can be seen from Table 1: The mechanical properties of the composite material of the present invention, such as flexural strength, flexural modulus and thermal deformation temperatu...

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

No PUM Login to view more

Abstract

This invention discloses a poly (lactic acid)/natural fiber composite, which is mainly composed of poly (lactic acid) resin and natural fibers. The production method comprises: performing surface treatment on natural fibers with coupling agent, mixing with poly (lactic acid) resin, antioxidant, nucleating agent and lubricant, melt-extruding, and granulating to obtain the product. The method has such advantages as easy operation and high efficiency. The poly(lactic acid)/natural fiber composite has such advantages as high modulus, good heat resistance, good processability, and good biodegradability, and can be used in the fields of automobile industry, architecture and domestic decoration.

Description

Technical field: [0001] The invention belongs to the field of polymer materials, and in particular relates to a natural fiber reinforced modified polylactic acid composite material and a production method thereof. Background technique: [0002] Polylactic acid (PLA) does not exist in nature. It is an environmentally friendly material prepared from the fermentation product lactic acid of agricultural economic crops (corn, wheat, potato, etc.) as the basic raw material. Polylactic acid has good biodegradability, good biocompatibility and bioabsorbability, and is non-toxic and harmless to the human body. It gradually degrades in the body and in the natural environment, and finally becomes carbon dioxide and water without leaving any Environmental issues. Therefore, polylactic acid is considered to be the most potential and promising degradable polymer material in many fields. However, some mechanical properties of pure polylactic acid such as heat resistance (heat distortion ...

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): C08L67/04C08J5/06C08J3/12B29C47/00
CPCC08J2367/04C08J5/045C08J5/06
Inventor 董卫卫赵春贵李俊刘新力
Owner TORAY FIBER RES INST(CHINA) CO LTD
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