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A modified polycarbonate material applied to 3D printing

A polycarbonate, 3D printing technology, applied in additive processing and other directions, can solve the problems of polycarbonate materials cannot be printed, and printed products are warped and deformed, so as to reduce warpage and cracking, improve shrinkage, stretch The effect of high tensile strength and notched impact strength

Active Publication Date: 2020-06-30
诺思贝瑞新材料科技(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: in order to solve the technical problem that polycarbonate materials cannot be printed at a temperature below 260°C, and its printed products will cause warping and deformation, a modified polycarbonate material applied to 3D printing is provided. ester material

Method used

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  • A modified polycarbonate material applied to 3D printing

Examples

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Effect test

Embodiment 1

[0033] This example provides a modified polycarbonate material for 3D printing, which contains the following components in parts by weight: 100 parts of general-purpose polycarbonate, 20 parts of polycaprolactone, 10 parts of toughening agent, hindered phenolic anti- 0.5 part of oxygen agent, 0.2 part of phosphite antioxidant; the general-purpose polycarbonate is selected from Covestro XT5010, the polycaprolactone selects Capa TM 6500, the toughening agent is methyl methacrylate-styrene-butadiene core-shell copolymer, and the hindered phenolic antioxidant is β-(3,5-di-tert-butyl-4-hydroxybenzene base) octadecyl propionate, and the phosphite antioxidant is three [2,4-di-tert-butylphenyl] phosphite.

[0034] The preparation method of the above-mentioned modified polycarbonate material applied to 3D printing comprises the following steps:

[0035] Dry the polycarbonate at 110°C until the water content does not exceed 0.05%, then cool to room temperature for later use;

[003...

Embodiment 2

[0040] This embodiment provides a modified polycarbonate material for 3D printing, comprising the following components by weight: 100 parts of general-purpose polycarbonate, 10 parts of thermotropic liquid crystal polymer, 25 parts of polycaprolactone, toughened 12 parts, hydrophobic fumed silica, 0.3 parts of hindered phenolic antioxidant, and 0.2 part of phosphite antioxidant; the general-purpose polycarbonate is Chi Mei PC-122, and the thermally induced liquid crystal polymerization Celanese A950, the polycaprolactone selects Capa TM 6506, the toughening agent is methyl methacrylate-styrene-butadiene core-shell copolymer, and the hydrophobic fumed silica is Evonik Degussa hydrophobic fumed silica R974, the hindered phenolic antioxidant is β-(3,5-di-tert-butyl-4-hydroxyphenyl) octadecyl propionate, and the phosphite antioxidant is tris[2 , 4-di-tert-butylphenyl] phosphite.

[0041] The preparation method of the above-mentioned modified polycarbonate material applied ...

Embodiment 3

[0047] This embodiment provides a modified polycarbonate material for 3D printing, which includes the following components in parts by weight: 80 parts of general-purpose polycarbonate, 20 parts of disc grade polycarbonate, 5 parts of thermotropic liquid crystal polymer, polycarbonate 15 parts of caprolactone, 8 parts of toughening agent, 2 parts of hydrophobic fumed silica, 0.5 part of hindered phenolic antioxidant, 0.2 part of phosphite antioxidant; the general-purpose polycarbonate is selected from Covestro 2405, the disc grade polycarbonate is Covestro CD2005, and the thermotropic liquid crystal polymer is Celanese A900, the toughening agent is methyl methacrylate-butyl acrylate core-shell copolymer, and the polycaprolactone is selected from Capa TM 6500, the hydrophobic fumed silica is Evonik Degussa hydrophobic fumed silica R972, the hindered phenolic antioxidant is tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, and the phosphite...

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Abstract

The invention relates to a modified polycarbonate material applied to 3D printing. The modified polycarbonate material is prepared from the following components in parts by weight: 100 parts of polycarbonate, 0 to 10 parts of a thermotropic liquid crystal polymer, 10 to 25 parts of polycaprolactone, 8 to 15 parts of a flexibilizer, 0 to 2 parts of hydrophobic fumed silica, 0.2 to 0.5 part of a hindered phenol antioxidant and 0.2 to 0.5 part of a phosphite antioxidant. The modified polycarbonate material applied to 3D printing can be printed and molded at a temperature of 260 DEG C, and is highin mechanical property, relatively high in tensile strength and notch impact strength and has low probability of thermal degrading; a printed product has no warping and deformation, has low probability of cracking and has a smooth and flat surface.

Description

technical field [0001] The invention relates to a modified polycarbonate material applied to 3D printing, belonging to the field of 3D printing materials. Background technique [0002] 3D printing technology is profoundly changing the process of modern manufacturing. It does not require traditional tools, fixtures and machine tools, but is based on digital model files, using powdered metal or plastic and other bondable materials, through layer-by-layer printing. The technology of constructing objects by printing, which is used in jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms and There are applications in other fields. [0003] Polymer materials are the most widely used materials in 3D printing technology, but the most commonly used polymer materials in the field of 3D printing, such as polylactic acid (PLA), a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L67/04C08L51/04C08L33/12C08K13/02C08K3/36C08K5/134C08K5/13C08K5/526B33Y70/00B29C48/92
CPCB29C48/92B33Y70/00C08L69/00C08L2201/08C08L2205/035C08L67/04C08L51/04C08L33/12C08K13/02C08K3/36C08K5/1345C08K5/13C08K5/526
Inventor 李振茅伟华
Owner 诺思贝瑞新材料科技(苏州)有限公司
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