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PVB based 3D printing wire material and preparation method thereof

A 3D printing and wire technology, applied in the field of 3D printing, can solve the problems of inconvenient use and unfavorable product appearance, and achieve the effects of good light transmission, improved surface finish, and simple preparation methods

Inactive Publication Date: 2017-06-13
SUZHOU POLYKING COMPOSITE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the printing is completed, a large number of protrusions are formed on the surface of the product due to accumulation and molding, which is not conducive to the appearance of the product. Removal, similar to the traditional lost wax process in our country, which brings inconvenience to people's use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] It consists of the following raw materials in parts by weight: 100 parts of PVB resin, 3 parts of compatibilizer, 1.5 parts of paraffin oil, 5 parts of antioxidant and 2.5 parts of plasticizer. The molecular weight distribution coefficient of the PVB resin is 2.2, the number average molecular weight is 160,000, the mass fraction of vinyl alcohol groups is 17%, the degree of acetalization is 77%, and the melt index is 5.

[0016] The preparation method of the PVB-based 3D printing wire, the specific steps are as follows:

[0017] Step 1: Weigh the materials, mix them in a high-speed mixer for 10 minutes, control the rotation speed at 240r / min, then dry them in a vacuum oven at 80°C for 8 hours, and set aside;

[0018] Step 2, import the dried raw materials into a single-screw extruder, control the temperature of the extruder at 180°C, and the temperature of the extruder head at 175°C, melt the raw materials, and extrude them through the single-hole extrusion head;

[00...

Embodiment 2

[0021] It consists of the following raw materials in parts by weight: 100 parts of PVB resin, 4 parts of compatibilizer, 2.5 parts of paraffin oil, 6 parts of antioxidant and 4 parts of plasticizer. The compatibilizer is a mixture of EVA and EVA-g-MAH; paraffin oil is a hydrocarbon mixture with 24 carbon atoms; the antioxidant is a compound system of hindered phenolic antioxidant and phosphite antioxidant; The plasticizer is a compound of triethylene glycol di-2-ethylhexanoate, diethylene glycol dibenzoate and triphenyl phosphate.

[0022] The preparation method of the PVB-based 3D printing wire, the specific steps are as follows:

[0023] Step 1: Weigh the materials, mix them in a high-speed mixer for 15 minutes, control the speed at 300r / min, then dry them in a vacuum oven at 80°C for 5-8 hours, and set aside;

[0024] Step 2, import the dried raw materials into a single-screw extruder, control the temperature of the extruder at 160°C, and the temperature of the extruder he...

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Abstract

The invention discloses a PVB based 3D printing wire material composed of the following raw materials in parts by weight: 90-110 parts of PVB resin, 3-4 parts of a compatilizer, 1.5-3.5 parts of paraffin oil, 5-6.5 parts of an antioxidant and 2.5-4 parts of a plasticizer. The invention also discloses a preparation method of the wire material. The wire material has the advantages of wide sources of the raw materials, simple preparation method and low production cost, and is suitable for large-scale industrialized production; the prepared product has the advantages of good anisotropy, softness, good meltable processability, good elasticity and good transparency, and can be used in 3D printers for support printing; while the printed product precision is ensured, after a printed product is treated by water, the surface finish degree is greatly improved, and the market prospect is broad.

Description

technical field [0001] The invention relates to the field of 3D printing, in particular to a PVB-based 3D printing wire. Background technique [0002] 3D printing (3DP) is a kind of rapid prototyping technology. It is a technology based on digital model files and using bondable materials such as powdered metal or plastic wires to construct objects by layer-by-layer printing. 3D printing technology is a widely used rapid prototyping technology. Its production technology principle is as follows: firstly, the 3D data model of the target production part is established by computer, and then the 3D model is sliced ​​through the corresponding 3D layering technology, so as to obtain a The section is the data information combination of the unit. Under the control of the computer, the meltable material is printed layer by layer through the corresponding data of the unit section, and finally the processing and manufacturing of the corresponding complex parts is completed. However, aft...

Claims

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Application Information

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IPC IPC(8): C08L29/14C08L91/06C08L23/08C08L51/06C08K5/00C08K5/13C08K5/524C08K5/523C08K5/103B33Y70/00
CPCC08L29/14B33Y70/00C08L2205/035C08L91/06C08L23/0853C08L51/06C08K5/00C08K5/13C08K5/524C08K5/523C08K5/103
Inventor 毛国栋孙君刘禹
Owner SUZHOU POLYKING COMPOSITE
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