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A scratch-resistant polycarbonate/polylactic acid alloy material and preparation method thereof

A technology of polycarbonate and alloy materials, applied in the field of polycarbonate/polylactic acid alloy materials and their preparation, can solve the problems of poor toughness and low toughness of alloy materials, achieve low price, reduce environmental pressure, increase environmental protection and surface The effect of scratch resistance

Active Publication Date: 2018-05-29
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] But the scratch resistance of above-mentioned scratch-resistant polycarbonate material still needs to be improved, and use polymethyl methacrylate as scratch-resistant agent, its toughness is lower, makes the toughness of alloy material become poorer, and at present about Using polylactic acid resin to modify polycarbonate to prepare scratch-resistant polycarbonate has not been reported yet

Method used

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  • A scratch-resistant polycarbonate/polylactic acid alloy material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 50 parts by weight of polycarbonate resin, 30 parts by weight of D-lactic acid polymer, 20 parts by weight of ethylene-tetrafluoroethylene copolymer, 7 parts by weight of methyl methacrylate-butadiene-styrene copolymer Thing, the SEBS of 1 weight part, the polyethylene wax of 3 weight parts, the tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester of 0.8 weight part, add high-speed mixer Mix well and evenly; send the mixed material into the twin-screw extruder with a metering and conveying device, and then extrude, pull, cool, pelletize, and pack into finished products after being sheared and mixed by the screw; The length-to-diameter ratio of the screw extruder is 42, the rotation frequency of the host of the screw extruder is 20 Hz, and the temperatures from the feeding port to the extrusion die are 220°C, 230°C, 230°C, 260°C, 280°C, making it scratch-resistant Polycarbonate resin, its related performance tests are shown in Table...

Embodiment 2

[0032] Weigh 90 parts by weight of polycarbonate resin, 70 parts by weight of DL-lactic acid polymer, 15 parts by weight of polyfluoroethylene propylene resin, 20 parts by weight of acrylonitrile-butadiene-styrene terpolymer, The ABS-g-MAH of 7 parts by weight, the zinc stearate of 0.9 parts by weight, the beta-(4-hydroxyl-3,5-di-tert-butylphenyl) n-octadecyl propionate of 0.5 parts by weight, Add it into a high-speed mixer and mix well; use a metering and conveying device to send the mixed material into a twin-screw extruder, and then extrude, pull, cool, pelletize, and pack after being sheared and mixed by the screw. finished product; the length-to-diameter ratio of the screw is 42, the rotation frequency of the host machine of the screw extruder is 30 Hz, and the temperatures from the feeding port to the extrusion die are respectively 220°C, 220°C, 230°C, 240°C, and 260°C. Scratch-resistant polycarbonate resin, and its related performance tests are shown in Table 1.

Embodiment 3

[0034] Weigh 10 parts by weight of polycarbonate resin, 90 parts by weight of L-lactic acid polymer, 30 parts by weight of ethylene-tetrafluoroethylene copolymer, 25 parts by weight of glycidyl methacrylate grafted ethylene-octene copolymer 15 parts by weight of ABS-g-MAH, 0.1 parts by weight of N, N-ethylene bis stearic acid amide, 0.4 parts by weight of three (2,4-di-tert-butylphenyl) phosphite, adding Fully mix in the high-speed mixer; use the metering and conveying device to send the mixed material into the twin-screw extruder. Finished product; the length-to-diameter ratio of the screw is 42, the rotation frequency of the main engine of the screw extruder is 40 Hz, and the temperatures from the feeding port to the extrusion die are 220°C, 230°C, 230°C, 260°C, and 280°C respectively. Scratch-resistant polycarbonate resin, its related performance tests are shown in Table 1.

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Abstract

The invention discloses a polycarbonate / polylactic acid alloy material, which is made of the following components by weight: 10-90 parts of polycarbonate; 10-90 parts of polylactic acid; 5-30 parts of anti-scratch agent; 1-25 parts of toughening agent; 1-15 parts of compatibilizer; 0.1-5 parts of lubricant; 0.2-0.8 parts of antioxidant. The invention also discloses a preparation method of the scratch-resistant polycarbonate / polylactic acid alloy material. The product of the invention has the characteristics of environmental protection, scratch resistance, etc., and the surface hardness is greater than 2H and can reach 4H level. While maintaining the performance of polycarbonate, the environmental protection and surface scratch resistance of the product are increased, and the application range of the product is expanded. The raw material polylactic acid resin in the alloy can be prepared from plants such as corn, sugarcane, and sweet potato. It is cheap, does not depend on petroleum resources, and can biodegrade under certain conditions, thereby saving petroleum resources and reducing environmental pressure.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, and relates to a scratch-resistant polycarbonate / polylactic acid alloy material and a preparation method thereof. Background technique [0002] Polycarbonate refers to a type of polymer whose macromolecular chain is composed of carbonate-type repeating structural units. The English name Polycarbonate, referred to as PC, has excellent impact resistance and transparency, excellent mechanical properties and electrical insulation. It is used Wide temperature range (-100°C-130°C), high dimensional stability, and high creep resistance, it is a typical plastic representative integrating rigidity, hardness, and toughness. Due to these advantages, polycarbonate is widely used in many fields such as electronic appliances, office supplies, precision machinery, medical treatment, labor insurance, household goods and automobiles. Polycarbonate is also an optical plastic with excellent performance. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L67/04C08L23/08C08L33/12C08L53/02C08L23/06C08L27/12C08L55/02C08L51/00C08L51/06C08K5/134C08K5/098C08K5/20C08K5/526
Inventor 杨桂生赵陈嘉
Owner HEFEI GENIUS NEW MATERIALS