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Low warping PP (propene polymer) material for 3D (three-dimensional) printing and preparation method thereof

A 3D printing, low-warping technology, applied in the field of 3D printing materials, can solve the problems of inability to print, poor printing stability, and easy warping of printing, and achieve the effects of reducing shrinkage, eliminating stress, and preventing warping

Inactive Publication Date: 2017-07-25
HUIZHOU RES INST OF SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a low-warpage PP material for 3D printing and its preparation method to solve the problems that PP 3D printing materials cannot be printed, have poor printing stability, and are easily warped during printing, resulting in the inability to print larger-sized parts.

Method used

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  • Low warping PP (propene polymer) material for 3D (three-dimensional) printing and preparation method thereof
  • Low warping PP (propene polymer) material for 3D (three-dimensional) printing and preparation method thereof
  • Low warping PP (propene polymer) material for 3D (three-dimensional) printing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Step 1: Weigh the raw materials of each component according to the component distribution ratio of the low-warpage PP material for 3D printing and its preparation method, and mix 40Kg of homopolymerized PP, 60Kg of barium sulfate (5μm, sphericity ≥ 60%), 10Kg of POE, and Warpage nucleating agent HPN-68L 0.1Kg, PP-g-MAH 5Kg, 1010 0.5Kg, 168 0.5Kg, montan wax 1Kg mechanically mix evenly;

[0036] Step 2: Extrude the mixed material through a twin-screw extruder at a processing temperature of 250°C, cool at normal temperature, air-dry, and pelletize to make modified PP pellets;

[0037]Step 3: Extrude the modified PP pellets through a 3D printing material extruder at a processing temperature of 250°C, cooling at a high temperature at 20°C, cooling at a medium temperature at a constant temperature at 20°C, cooling at room temperature, air-drying, drawing, and coiling. A low warpage PP material for 3D printing and a preparation method thereof.

Embodiment 2

[0039] Step 1: Weigh the raw materials of each component according to the component distribution ratio of the low-warpage PP material for 3D printing and its preparation method, mix 95Kg of random copolymerized PP, 5Kg of ceramic microbeads (15μm, sphericity ≥ 80%), and 10Kg of HDPE , KH560 0.5Kg, 10100.05Kg, DLTP 0.05Kg, erucamide 0.1Kg, anti-ultraviolet agent 944 0.5Kg, titanium dioxide 1Kg and mechanically mix evenly;

[0040] Step 2: Extrude the mixed material through a twin-screw extruder at a processing temperature of 190°C, cool at normal temperature, air-dry, and pelletize to make modified PP pellets;

[0041] Step 3: Extrude the modified PP pellets through a 3D printing material extruder at a processing temperature of 180°C, then cool at a high temperature at a high temperature of 70°C, at a medium temperature at a constant temperature of 50°C, at room temperature, air-dry, draw strips, and coil to make A low warpage PP material for 3D printing and a preparation metho...

Embodiment 3

[0043] Step 1: Weigh the raw materials of each component according to the component distribution ratio of the low-warpage PP material for 3D printing and its preparation method, and mix 70Kg of block copolymerized PP, 30Kg of solid glass microspheres (10μm, sphericity ≥ 90%), and Warpage nucleating agent Irgastab NA 2870.6Kg, KH550 0.5Kg, 1010 0.1Kg, 168 0.2Kg, EBS 0.1Kg, calcium stearate 0.1Kg, anti-ultraviolet agent V7030.1Kg mechanically mixed uniformly;

[0044] Step 2: Extrude the mixed material through a twin-screw extruder at a processing temperature of 230°C, cool at normal temperature, air-dry, and pelletize to make modified PP pellets;

[0045] Step 3: Extrude the modified PP pellets through a 3D printing material extruder at a processing temperature of 200°C, cooling at a high temperature at 25°C, cooling at a medium temperature at a constant temperature at 20°C, cooling at room temperature, air drying, stripping, and coiling. A low warpage PP material for 3D printi...

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Abstract

The invention discloses a low warping PP (propene polymer) material for 3D (three-dimensional) printing and a preparation method thereof. The low warping PP material is prepared from the following components in parts by weight: 40 to 95 parts of PP, 0 to 10 parts of a flexibilizer, 5 to 60 parts of warping resistant filler, 0.1 to 10 parts of a warping resistant agent, 0.2 to 5 parts of a compatilizer, 0.1 to 1 part of an antioxidant, 0.1 to 1 part of a lubricant, 0 to 0.5 part of an anti-ultraviolet agent and 0 to 1 part of toner. The shrinking percentage, weight-average molecular weight, molecular weight distribution and melt index of the PP are strictly controlled, so that the printing of the PP is realized; the printing stability of the PP is improved; and meanwhile, the warping during printing is controlled to some extent. The addition of the warping resistant filler having a relatively high degree of sphericity not only reduces the shrinking percentage of the PP but also can effectively eliminate the stress of a material; accordingly, the warping generated during printing is effectively prevented. The grain size of the warping resistant filler is controlled, so that not only is the filler dispersion facilitated, but also a nozzle of a 3D printer cannot be blocked. In addition, the warping resistant agent can thin the crystal form of the PP; crystal form thinning is conducive to lowering the internal stress of the PP, so that the warping of the PP during printing is ameliorated.

Description

technical field [0001] The invention relates to a 3D printing material, in particular to a low-warpage PP material for 3D printing and a preparation method thereof. Background technique [0002] 3D printing (additive manufacturing) technology is one of the most representative technologies of the third industrial revolution, which will promote the industrial transformation of the whole society. Currently, Fused Deposition Modeling (FDM) 3D printing technology is the most popular 3D printing technology, but the development of 3D printing materials limits the development of related industries. The popular FDM 3D printing materials on the market are mainly PLA and ABS, but PLA has insufficient mechanical and thermal properties, and ABS has a strong odor and poor environmental performance. PP can solve the problems of PLA and ABS, and has its own advantages. Toys and other fields have broad application prospects. [0003] At present, due to improper molecular weight and wide m...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08L53/00C08L23/08C08L51/06C08L23/06C08L91/06C08K3/30C08K5/134C08K5/526C08K13/04C08K7/18C08K5/20C08K3/22C08K7/20C08K5/098C08K7/28B33Y70/00
CPCC08L23/12B33Y70/00C08K5/098C08K5/1345C08K5/526C08K7/20C08K13/04C08K2201/003C08L23/14C08L53/00C08L2201/08C08L2205/03C08L2205/035C08L2205/08C08L2207/062C08L2207/14C08L23/0815C08L51/06C08L91/06C08K2003/3045C08L23/06C08K7/18C08K5/20C08K2003/2241C08K7/28
Inventor 纪红兵曾永斌王晓红刘璇
Owner HUIZHOU RES INST OF SUN YAT SEN UNIV
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