Rapid laser sintering molding material based on polycarbonate powder

A polycarbonate and laser sintering technology is applied in the field of compound materials based on polycarbonate powder, which can solve the problems of low mechanical properties of sintering deformation, and achieve the effect of solving the problem of warping deformation, stabilizing mechanical properties and improving mechanical properties.

Inactive Publication Date: 2009-12-09
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Because the above-mentioned polycarbonate laser sintering powder materials have the disadvantages of serious sintering deformation and low mechanica

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] 1kg polycarbonate, 50g polystyrene, 40g ABS resin dried at 120°C for 8h, 5g styrene / maleic anhydride copolymer and 2g ABS graft copolymer dried at 100°C for 6h were first mixed in a high-speed mixer Mix at a low speed of 300r / min for 2 minutes, then mix at a high speed of 700r / min for 3 minutes. The mixture was loaded into a screw extruder, and granulated under the conditions of a barrel temperature of 200° C. and a screw speed of 80 r / min. The obtained organic pellets are cooled to -150°C in a low-temperature freezing device, put into a disc-shaped mechanochemical reactor for low-temperature pulverization, and the low-temperature pulverized material is passed through a 160-mesh standard sieve to obtain a blended polycarbonate powder material.

[0044] Dissolve 2g of sodium dodecylbenzenesulfonate and 0.5g of KH-550 in 250mL of absolute ethanol, spray evenly onto the surface of the blended polycarbonate powder material with a spray device, and dry to remove the absolute...

Embodiment 2

[0047] Get 1kg polycarbonate pellets, 80g polystyrene, 20g ABS resin, 8g styrene / maleic anhydride copolymer, 1gABS graft copolymer, obtain polycarbonate powder material by the embodiment 1 method.

[0048] Take 2g of sodium dioctyl sulfosuccinate and 1g of KH-560, and prepare the base material according to the surface treatment method in Example 1. Get 2-hydroxyl-4-methoxybenzophenone 3g, mannitol ester 2g, nanometer silicon carbide powder 3g, solid glass microsphere 80g, base material is modified, sieved by the method for embodiment 1, prepares into a laser sintered rapid prototyping material based on polycarbonate powder.

Embodiment 3

[0050] Take 1kg polycarbonate pellets, 100g polystyrene, 50g ABS resin, 10g styrene / maleic anhydride copolymer, 3g ABS graft copolymer, 5g sodium glycocholate, 3gKH-570, 5g2-hydroxy-4-methoxy Based on benzophenone, 3g sorbitol ester, 5g nano-silicon carbide powder, 60g wollastonite, according to the method of Example 1, the laser sintering rapid prototyping material based on polycarbonate powder was made.

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PUM

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Abstract

The invention relates to a rapid laser sintering molding material based on polycarbonate powder. Polycarbonate, stilbene flexibilizer, ABS resin and styrene/maleic anhydride copolymer and ABS graft copolymer are mixed for granulation and crushed into polycarbonate power material at low temperature; sulfonic acid surfactant and silane coupling agent are dissolved in absolute alcohol and evenly sprayed on the surface of the polycarbonate powder material, and absolute alcohol is removed to be made into base material; benzophenone light absorber, nano carborundum powder, and non-ionic antistatic agent and organic filler are added into the base material and mixed to be uniform, thus obtaining the rapid laser sintering molding material based on polycarbonate powder. The rapid laser sintering molding material of the invention can better solve buckling deformation problem of a sintering piece, greatly improves mechanical property of the sintering piece and has great advantages in rapid making of thin-wall spare parts, precision parts, complex parts and parts resistant to high temperature and low temperature.

Description

technical field [0001] The invention relates to a compound material based on polycarbonate powder, in particular to a polycarbonate powder material for laser sintering rapid prototyping. Background technique [0002] At present, although there are many researches on new laser sintering rapid prototyping materials in China, most of them are limited to the research on the molding process of existing materials and the performance of parts, and the precision, strength and durability of the blanks are still far from being able to be achieved. To meet the requirements of functional parts, there is no specialized rapid prototyping material manufacturer. This situation not only affects the quality of laser sintering rapid prototyping materials or molded parts, but also is not conducive to the industrialization of laser sintering rapid prototyping technology. The development of new materials that are easy to shape, have small deformation, high strength, no pollution, and low cost ha...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L25/06C08L55/02C08L25/08C08K13/02C08K3/34C08K3/26C08K5/42C08K5/07
Inventor 白培康王建宏李玉新刘斌
Owner ZHONGBEI UNIV
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