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A polylactic acid modified reinforced composite material

A reinforced composite material, polylactic acid technology, applied in the field of polylactic acid materials, can solve the problems of polylactic acid, such as poor thermal stability, toughness, limited application, poor tensile strength and impact strength, etc., to achieve good water absorption and easy biological Effects of degradability, improved water absorption, high tensile strength and impact strength

Active Publication Date: 2018-05-22
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor thermal stability and toughness of polylactic acid, it has poor performance in terms of tensile strength and impact strength, which limits its application in many aspects.

Method used

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  • A polylactic acid modified reinforced composite material
  • A polylactic acid modified reinforced composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: Take low melting point nylon 6 (low melting point nylon 6 is to mix nylon 6 and calcium chloride in a mass ratio of 97:3, then heat and melt at 210-240°C to prepare low melting point nylon 6) and epoxy Resin, mixed with low melting point nylon 6: epoxy resin = 100:3 by mass ratio and melted and extruded at 165-195°C, the extruded product was pulled into a pelletizer and pelletized to obtain modified pellets, Mix polylactic acid and modified pellets uniformly at a mass ratio of 99:1, melt and extrude the mixture at 165-195°C, and pull the extruded product into a pelletizer for pelletizing to obtain polylactic acid modified reinforced compound Material.

[0024] Put the composite material samples obtained through this embodiment on the WDW-10C universal testing machine produced by Jinan Naier Testing Co., Ltd. and the k-5033 impact testing machine produced by Dongguan Yuanke Testing Instrument Co., Ltd. respectively, according to GB / T1040-2006 standard and...

Embodiment 2

[0025] Embodiment 2: Take low-melting-point nylon 6 and epoxy resin, mix it with low-melting-point nylon 6:epoxy resin=100:4 by mass ratio and melt extrusion at 165-195°C, and pull the extrudate to the cutting edge. Pelletize in a pelletizer to obtain modified pellets, uniformly mix polylactic acid and modified pellets at a mass ratio of 97:3, melt and extrude the mixture at 165-195°C, and drag the extrudate to the pelletizer Mid-cut pelletizing to obtain polylactic acid modified reinforced composite material.

[0026] Put the composite material samples obtained through this embodiment on the WDW-10C universal testing machine produced by Jinan Naier Testing Co., Ltd. and the k-5033 impact testing machine produced by Dongguan Yuanke Testing Instrument Co., Ltd. respectively, according to GB / T1040-2006 standard and GB / T1843-2008 standard conduct tensile performance test and impact strength test, the test results are attached figure 1 And attached figure 2 "No. 3" in the

Embodiment 3

[0027] Embodiment 3: Take low-melting-point nylon 6 and epoxy resin, mix it with low-melting-point nylon 6:epoxy resin=100:5 by mass ratio and melt extrusion at 165-195°C, and pull the extrudate to the cutting edge. Pelletize in a pelletizer to obtain modified pellets, uniformly mix polylactic acid and modified pellets at a mass ratio of 95:5, melt and extrude the mixture at 165-195°C, and pull the extruded product to the pelletizer Mid-cut pelletizing to obtain polylactic acid modified reinforced composite material.

[0028] Put the composite material samples obtained through this embodiment on the WDW-10C universal testing machine produced by Jinan Naier Testing Co., Ltd. and the k-5033 impact testing machine produced by Dongguan Yuanke Testing Instrument Co., Ltd. respectively, according to GB / T1040-2006 standard and GB / T1843-2008 standard conduct tensile performance test and impact strength test, the test results are attached figure 1 And attached figure 2 "No. 4" in t...

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Abstract

The invention discloses a polylactic acid-modified and reinforced composite material which is formed by blending polylactic acid and modified aggregates, wherein the weight percentage of the modified aggregates is more than 0 percent and is less than or equal to 7 percent, and the balance is the polylactic acid; the modified aggregates are formed by blending nylon 6 and epoxy resin, and the ratio of the nylon 6 to the epoxy resin is equal to 100:(3 to 5). A preparation process of the polylactic acid-modified and reinforced composite material comprises the following steps: taking and blending the nylon 6 and the epoxy resin according to the ratio, performing melting-extrusion on a mixture and drawing an extrudate into a granulator for granulation so as to obtain the modified aggregates; adding the modified aggregates into the polylactic acid in proportion, uniformly blending, performing melting-extrusion on a mixture, drawing an extrudate to a granulator for granulation so as to prepare the polylactic acid modified and reinforced composite material. The polylactic acid modified and reinforced composite material not only has higher tensile strength and impact strength, but also has better hygroscopic property and high biodegradability.

Description

technical field [0001] The invention relates to a polylactic acid material, in particular to a polylactic acid modified reinforced composite material. Background technique [0002] Polylactic acid (PLA) is a polymer obtained by polymerization of lactic acid as the main raw material. The raw material source is sufficient and can be regenerated. The production process of polylactic acid is non-polluting, and the product can be biodegraded to realize the cycle in nature. Therefore, it is an ideal green polymer material. Polylactic acid is currently the most mature industrialization, the largest output, and the most widely used bio-based plastic. It is one of the most promising environment-friendly polymer materials, because of its good renewability, degradability, biocompatibility, and processability, it is considered to be the best choice to replace traditional polyolefins. However, due to the poor thermal stability and toughness of polylactic acid, it has poor performance in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L77/02C08L63/00C08K3/16
CPCC08L67/04C08L2201/06C08L2205/03C08L77/02C08L63/00C08K2003/162
Inventor 鲁圣军胡孝迎王君王彩红何敏
Owner GUIZHOU UNIV