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Polylactic acid composite solid resin with electromagnetic shielding performance, and production process thereof

A polylactic acid resin and electromagnetic shielding technology, applied in the field of functional materials, can solve the problems of many conductive base materials precious metals, high production cost, poor material compatibility, etc., and achieve excellent electromagnetic shielding performance, low cost, and strong anti-shielding ability. Effect

Inactive Publication Date: 2013-06-12
KUNSHAN XIANGHUAJING BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve technical problems such as the conductive base materials used in electromagnetic shielding products in the prior art are more precious metals, higher production costs, and poor material compatibility, the present invention provides a polylactic acid composite solid resin with electromagnetic shielding properties functional solution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) Dissolve 100 kg of polylactic acid resin in 500 kg of methylene chloride solvent, add 10 kg of polylactic acid acrylic acid graft copolymer and fully stir until dissolved;

[0027] 2) Slowly add 90 kg of electromagnetic shielding powder material to the above polymer solution, and stir at high speed to fully disperse the powder material in the polymer solution; k

[0028] 3) The dichloromethane in the above-mentioned mixture is preliminarily removed by vacuum distillation, and after being extracted twice with the extractant acetone, the residual solvent is removed by vacuum distillation again until the solvent cannot be detected, and a solid powdery mixture is obtained;

[0029] 4) Add 100 kg of the solid powder mixture obtained above to 80 kg of polylactic acid resin, add 20 kg of plasticizer polyethylene glycol 400, and use a twin-screw extruder to melt and granulate to obtain a polylactic acid compound with electromagnetic shielding properties. Solid resin 200kg. ...

Embodiment 2

[0032] 1) Dissolve 190 kg of polylactic acid resin in 500 kg of methylene chloride solvent, add 10 kg of polylactic acid acrylic acid graft copolymer and fully stir until dissolved;

[0033] 2) Slowly add 100kg of electromagnetic shielding powder material into the above polymer solution, and stir at high speed to fully disperse the powder material in the polymer solution;

[0034] 3) Preliminary removal of dichloromethane in the above mixture by means of vacuum distillation, and after twice extraction with extractant ethanol, the remaining solvent is removed by vacuum distillation again until the solvent cannot be detected to obtain a solid powdery mixture;

[0035] 4) Add 150 kg of the solid powdery mixture obtained above to 30 kg of polylactic acid resin, add 20 kg of plasticizer polyethylene glycol 400, and use a twin-screw extruder to melt and granulate to obtain a polylactic acid compound with electromagnetic shielding properties. Solid resin 200kg.

[0036] The mass con...

Embodiment 3

[0038] 1) Dissolve 60kg of polylactic acid resin in 500kg of dichloromethane solvent, add 20kg of styrene acrylic acid copolymer and stir until it dissolves;

[0039] 2) Slowly add 120 kg of electromagnetic shielding powder material into the above polymer solution, and stir at high speed to fully disperse the powder material in the polymer solution;

[0040] 3) The dichloromethane in the above-mentioned mixture is preliminarily removed by vacuum distillation, and after being extracted twice with the extractant acetone, the residual solvent is removed by vacuum distillation again until the solvent cannot be detected, and a solid powdery mixture is obtained;

[0041] 4) Add 100 kg of the solid powder mixture obtained above to 80 kg of polylactic acid resin, add 20 kg of plasticizer polyethylene glycol 400, and use a twin-screw extruder to melt and granulate to obtain a polylactic acid compound with electromagnetic shielding properties. Solid resin 200kg.

[0042] The mass conte...

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Abstract

The invention discloses a polylactic acid composite solid resin with an electromagnetic shielding performance, and a production process thereof. The polylactic acid composite solid resin comprises the following components by mass content: 20.0% to 80.0% of polylactic acid resin, 0.1% to 10.0% of interface compatibility agent, 2.0% to 20.0% of plasticizer and 3.0% to 50.0% of electromagnetic shielding powder body. In polylactic acid ink, plastic and fiber materials added with the composite solid resin provided by the invention, the electromagnetic shielding powder body is uniformly dispersed, and has no negative impact on mechanical properties of materials. The polylactic acid composite solid resin has a good electrostatic shielding performance, lower cost and broad prospects in industrial application.

Description

technical field [0001] The invention relates to a polylactic acid composite solid resin with electromagnetic shielding performance and a production process thereof, belonging to the technical field of functional materials. Background technique [0002] The advent and rapid development of petrochemical-based synthetic materials such as plastics, fibers, paints, and inks has greatly improved human life. However, the huge production and consumption of synthetic materials have also produced two major issues: limited petroleum resources are being consumed. Environmental pollution due to massive consumption and emissions. In recent years, the production and demand of biodegradable polymer materials have developed rapidly, and they have been widely used in the three major fields of plastics, fibers, coatings and inks. Biodegradable polymer materials can be divided into chemical synthesis type, natural polymer type, and microbial synthesis type according to the source. Chemically ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08K9/10
Inventor 许丹陈建勇吴航宗于阳阳万蓉蓉
Owner KUNSHAN XIANGHUAJING BIOTECH
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