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Heat-resistant PLA (Polylactic Acid) anti-electrostatic composite material and preparation method thereof

A composite material and anti-static technology, applied in the field of heat-resistant PLA anti-static composite material and its preparation, can solve the problems of limited application, poor thermal stability and impact resistance, and achieve improved mechanical strength, good anti-static performance, The effect of improving thermal stability and impact resistance

Inactive Publication Date: 2016-08-31
JIN BAOLI TECH SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Polylactic acid (PLA) is a new type of degradable material with good biocompatibility, gloss and transparency. It is an environmentally friendly material. It has good tensile strength and air permeability and can be used in a variety of processing methods, such as spinning, extrusion, biaxial stretching, injection blow molding, but poor thermal stability and impact resistance, which seriously limits its application in the field of electronic equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: A heat-resistant PLA antistatic composite material, including the following raw materials in parts by mass: 100 parts of polylactic acid (PLA), 10 parts of antistatic additive, 30 parts of heat-resistant modifier, and active zinc oxide as a reinforcing agent 1 part of powder, 5 parts of crosslinking agent dipropylene glycol diacrylate, 4 parts of glyceryl monostearate; Described antistatic additive is acetylene black and graphite, and its mass ratio is 2:3; Described heat-resistant The modifying agent is a nucleating agent, a toughening agent, a plasticizer and an inorganic filler, and its mass part ratio is 4:2:1:6.

[0022] Further, the nucleating agent is 1,3:2,4-di(3,4-dimethylbenzylidene)-D-sorbitol, and the toughening agent is liquid polybutadiene rubber, so The plasticizer is tributyl citrate and triphenyl phosphite, and the inorganic filler is nano-hydroxyapatite powder and nano-montmorillonite, the mass ratio of which is 1:4.

[0023] The preparatio...

Embodiment 2

[0029] Example 2: A heat-resistant PLA antistatic composite material, including the following raw materials in parts by mass: 100 parts of polylactic acid (PLA), 5 parts of antistatic additive, 25 parts of heat-resistant modifier, and active zinc oxide as a reinforcing agent 1 part of powder, 3 parts of crosslinking agent dipropylene glycol diacrylate, 2 parts of glyceryl monostearate; Described antistatic additive is acetylene black and graphite, and its mass ratio is 1:2; Described heat-resistant The modifying agent is a nucleating agent, a toughening agent, a plasticizer and an inorganic filler, and the mass ratio thereof is 3:1:1:4.

[0030] Further, the nucleating agent is polyamide, the toughening agent is polyvinyl butyral, the plasticizer is dibutyl sebacate, and the inorganic filler is nano-hydroxyapatite powder and The nano-montmorillonite has a mass part ratio of 1:5.

[0031] The preparation method of the described heat-resistant PLA antistatic composite material,...

Embodiment 3

[0032] Example 3: A heat-resistant PLA antistatic composite material, including the following raw materials in parts by mass: 100 parts of polylactic acid (PLA), 15 parts of antistatic additive, 40 parts of heat-resistant modifier, and active zinc oxide as a reinforcing agent 2 parts of powder, 8 parts of crosslinking agent dipropylene glycol diacrylate, 5 parts of glyceryl monostearate; Described antistatic additive is acetylene black and graphite, and its mass ratio is 1:1; Described heat-resistant The modifying agent is a nucleating agent, a toughening agent, a plasticizer and an inorganic filler, and the mass ratio thereof is 5:3:2:8.

[0033] Further, the nucleating agent is zinc phenyl phosphate, the toughening agent is polyvinyl butyral, and the plasticizer is tributyl citrate, dibutyl sebacate and triphenyl phosphite ester, the inorganic filler is nano-hydroxyapatite powder and nano-montmorillonite, and its mass part ratio is 1:3.

[0034] The preparation method of th...

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Abstract

The invention discloses a heat-resistant PLA (Polylactic Acid) anti-electrostatic composite material. The heat-resistant PLA anti-electrostatic composite material is prepared from the following raw materials in parts by mass: 100 parts of polylactic acid (PLA), 5-15 parts of anti-electrostatic additives, 25-40 parts of heat resistance modifier, 1-2 parts of a reinforcing agent, i.e., active zinc oxide powder, 3-8 parts of a cross-linking agent, i.e., dipropylene glycol diacrylate and 2-5 parts of glyceryl monostearate. The invention simultaneously discloses a preparation method for the heat-resistant PLA anti-electrostatic composite material. According to the heat-resistant PLA anti-electrostatic composite material and the preparation method thereof, the heat resistance modifier is used for carrying out heat resistance modification on the PLA in a manner of being matched with other assistants, so that the thermal stability and impact resistance of the PLA are effectively improved, and meanwhile, the mechanical strength of PLA products is effectively improved; through modifying the anti-electrostatic additives, the compatible compounding of the anti-electrostatic additives, i.e., acetylene black and graphite with the PLA is better facilitated, and good anti-electrostatic performance is obtained.

Description

technical field [0001] The invention relates to the technical field of antistatic materials and preparation thereof, in particular to a heat-resistant PLA antistatic composite material and a preparation method thereof. Background technique [0002] With the development of science and technology, the integration of electronic equipment is getting higher and higher, and the problem of electrostatic hazards is becoming more and more prominent. Static electricity can affect the quality of products, lead to damage to electronic components, data loss and other problems, so anti-static materials have attracted more and more attention. The integration of electronic equipment is getting higher and higher, and the heat emitted by the operation of electronic equipment is increasing. The materials assembled need to have certain high temperature resistance. [0003] Polylactic acid (PLA) is a new type of degradable material with good biocompatibility, gloss and transparency. It is an en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L9/00C08L29/14C08K13/02C08K3/04C08K3/22C08K3/34C08K3/32
CPCC08K2201/011C08K2201/014C08L67/04C08L2201/04C08L2201/08C08L9/00C08K13/02C08K3/04C08K2003/2296C08K3/346C08K2003/325C08L29/14
Inventor 李明华
Owner JIN BAOLI TECH SUZHOU
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