Modified poly(lactic acid) masterbatch prepared from poly(lactic acid) residual material or waste material and application thereof

A technology of polylactic acid and residual materials, which is applied in the field of polymer compounds, can solve problems such as difficult recycling, achieve good uniformity, excellent mechanical properties, and reduce dependence

Active Publication Date: 2012-10-17
YONGKANG NANYI BIOLOGICAL TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to overcome the defects of the above-mentioned prior art, and provide a modified polylactic acid masterbatch, which uses polylactic acid residue or waste with a molecular weight of less than 50,000 as raw materials to solve the problem of polylactic acid with a small molecular weight. The problem of difficult recycling of leftover or waste materials; and the flexibility and heat resistance of polylactic acid masterbatches can be significantly improved through the screening of components, so that the prepared polylactic acid masterbatches can be mass-produced and popularized

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
  • Modified poly(lactic acid) masterbatch prepared from poly(lactic acid) residual material or waste material and application thereof
  • Modified poly(lactic acid) masterbatch prepared from poly(lactic acid) residual material or waste material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The formula (parts by weight) of the modified polylactic acid masterbatch of the present invention is as follows:

[0030] 1. 75.0 parts of flaky polylactic acid residues or waste materials, said polylactic acid residues or waste materials are poly-L-lactic acid, polyDL-lactic acid or a copolymer blend of the former two, and its number-average molecular weight is 2- 50000.

[0031] 2. 18.0 parts of toughening modifier, each component of described toughening modifier is calculated as by weight percentage:

[0032]

[0033] 3. 2.0 parts of plasticizer, each component of said plasticizer is calculated by weight percentage:

[0034] a. Acetyl tri-n-butyl citrate 40.00%

[0035] b. Triethyl citrate 20.00%

[0036] c. Dibutyl sebacate 40.00%

[0037] 4. 3.30 parts of heat-resistant modifier, each component of the heat-resistant modifier is calculated by weight percentage:

[0038]

[0039] 5. 1.0 parts of lubricant, each component of the lubricant is calculated by ...

Embodiment 2

[0048] The formula (parts by weight) of the modified polylactic acid masterbatch of the present invention is as follows:

[0049] 75.0 parts of flaky polylactic acid residue or waste material, 15.3 parts of toughening modifier, 3.5 parts of plasticizer, 4.5 parts of heat-resistant modifier, 1.0 part of lubricant, 0.3 part of nucleating agent, 0.25 part of antioxidant, 0.15 parts of anti-ultraviolet agent, the specific components and mass percentages of the aforementioned materials are the same as in Example 1.

[0050] The performance data of the film prepared by using the above-mentioned modified polylactic acid masterbatch are as follows: tensile strength (MPa)-longitudinal (MD), 32.3MPa; tensile strength (MPa)-transverse (TD), 28.2MPa; elongation at break Elongation (%) - longitudinal direction (MD), 305%; elongation at break (%) - transverse direction (TD), 262%, Vicat softening temperature (°C): 87.

Embodiment 3

[0052] The formula (parts by weight) of the modified polylactic acid masterbatch of the present invention is as follows:

[0053] 75.0 parts of flaky polylactic acid residue or waste material, 13.3 parts of toughening modifier, 5.0 parts of plasticizer, 5.0 parts of heat-resistant modifier, 1.0 part of lubricant, 0.3 part of nucleating agent, 0.25 part of antioxidant, 0.15 parts of anti-ultraviolet agent, the specific components and mass percentages of the aforementioned materials are the same as in Example 1.

[0054] The performance data of the film prepared by using the above-mentioned modified polylactic acid masterbatch are as follows: tensile strength (MPa)-longitudinal (MD), 30.8MPa; tensile strength (MPa)-transverse (TD), 25.9MPa; elongation at break Elongation (%) - longitudinal direction (MD), 282%; elongation at break (%) - transverse direction (TD), 249%, Vicat softening temperature (°C): 88.

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
melting pointaaaaaaaaaa
Vicat softening pointaaaaaaaaaa
Vicat softening pointaaaaaaaaaa
Login to view more

Abstract

In the existing PLA (poly(lactic acid)) shaping techniques, the limitations on the flexibility and heat resistance of original physical properties of a PLA masterbatch can not be broken through, so that the shaped product has multiple limitations on function, type, application, use condition, transport and storage conditions and the mass production and popularization of the PLA product can not berealized. The invention provides a modified poly(lactic acid) masterbatch prepared from a poly(lactic acid) residual material or waste material, which comprises the following raw materials in parts by weight: 75.0-85.0 parts of flaky poly(lactic acid) residual material or waste material, 8.0-18.0 parts of toughening modifier, 0.5-5.0 parts of plasticizer, 2.0-5.0 parts of heat-resistant modifier,1.0-2.0 parts of lubricant, 0.3-10.0 parts of nucleating agent, 0.1-1.0 part of antioxidant and 0.1-1.0 part of anti-UV agent. The invention significantly improves the flexibility and heat resistanceof the poly(lactic acid) masterbatch by component screening, so that the mass production and popularization of the PLA product can be realized.

Description

technical field [0001] The invention relates to the field of polymer compounds, in particular to a modified polylactic acid masterbatch made from polylactic acid residues or waste materials and its application. Background technique [0002] There are not many countries in the world that have independent technology to produce polylactic acid (PLA), and because China has limited independent intellectual property rights for mass production, most PLA masterbatches rely on imports from the United States. Since 1 ton of PLA resin needs 2.3 tons of corn as a raw material, the treatment methods of backfilling and incinerating polylactic acid residues or wastes have caused great economic waste. Under the premise that the price of PLA is higher than that of plastic, it is unwise to give up the recycling of PLA. [0003] As of June 2010, the loopla patented technology exhibited by the Belgian company Futerro at the Belgium-EU Pavilion in the Shanghai World Expo Park can only convert t...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08K13/02C08G81/00C08G63/664B29C55/28B29B9/06
Inventor 应高波余信村
Owner YONGKANG NANYI BIOLOGICAL TECH
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