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Thermoplastic elastomer composition for preparing flexible printing material for three-dimensional printing rapid prototyping

A thermoplastic elastomer, three-dimensional printing technology, applied in the field of thermoplastic elastomer compositions, can solve the problems of lack of ductility, lack of soft hand feel, unsmooth printing, etc., and achieves easy process operation, wide range of raw material acquisition, and improved printing. The effect of efficiency

Active Publication Date: 2014-04-30
朱叶周
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hardness of products or components molded from these materials is generally in the range of Rockwell hardness (Rockwell, R) 100 to 120, which has strong rigidity and solid structure, so the application range is limited, and it is difficult to be used in some special applications. Design, such as tracks and decorative chains, etc.
Due to the high hardness of these molding materials, lack of soft feel, and easy to cause harm to the human body due to their edges and corners, it is difficult to use them in other product fields such as toys, decorations and hand molds.
In addition, this kind of printing material made into filaments is too rigid and has no ductility during the 3D printing filament supply process. It is easy to bend and cannot recover or break, resulting in unsmooth printing and affecting the continuity of production.

Method used

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  • Thermoplastic elastomer composition for preparing flexible printing material for three-dimensional printing rapid prototyping
  • Thermoplastic elastomer composition for preparing flexible printing material for three-dimensional printing rapid prototyping
  • Thermoplastic elastomer composition for preparing flexible printing material for three-dimensional printing rapid prototyping

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Experimental program
Comparison scheme
Effect test

Embodiment approach

[0076] In an exemplary embodiment, the thermoplastic elastomer composition used for preparing soft printing materials for three-dimensional printing fused deposition rapid prototyping according to the present invention includes the following components by weight percentage:

[0077] thermoplastic elastomer

30.0%～43.8%

polyolefin

11.8%～40.1%

softener

29.5%～44.0%

lubricant

0.1%

antioxidant

0.3%

[0078] The thermoplastic elastomer is selected from any of the above-mentioned thermoplastic elastomers, preferably a styrene-based thermoplastic elastomer, such as SEBS, which can be a combination of Kraton G1650 and Kraton G1651, and the weight ratio of the two can be 1:1, as in Example 1 ~5 described.

[0079] The polyolefin is selected from polypropylene, polyethylene and other olefin oligomers. Polypropylene is preferred.

[0080] The softening agent is selected from white mineral oil, paraffin oil, silicone oil, cas...

Embodiment 1～ Embodiment 5

[0118] 1. Materials and their sources: as shown in Table 2.

[0119] Table 2:

[0120]

[0121] 2. Formulation, preparation method and performance test

[0122] Formula and performance test: as shown in Table 2.

[0123] Preparation method: according to the dosage ratio shown in Table 3, put each component in a mixer, fully mix under normal temperature conditions to form a uniformly mixed material, and put it into the compound with a length-to-diameter ratio (L / D) of 44 or more Parallel twin-screw extruder, melting and plasticizing at 180-220°C to form a melt; the melt is further uniformly mixed, extruded through the mouth of the parallel twin-screw extruder, and then using a commonly used underwater pelletizer Granulation is carried out to obtain soft printing materials in the form of soft particles.

[0124] The above-mentioned soft particles are plasticized and melted again by a common single-screw extruder at 180-220°C to form a melt; after the melt passes through a ...

Embodiment 6～10

[0129] 1. Materials and sources: as shown in Table 4.

[0130] Table 4:

[0131] purpose

Chemical name / Common name

Trade name / source

[0132] thermoplastic elastomer

SEPS

Septon2063

polyolefin

Polypropylene

Formalene 1102KR

softener

white mineral oil

Calumet Calsol5550

lubricant

Erucamide

PMC Kemamide B Powder

antioxidant

Tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]pentaerythritol ester

BASF Irganox 1010

antioxidant

Tris(2.4-di-tert-butylphenyl)phosphite

BASF Irganox 168

[0133] 2. Formulation and performance test: as shown in Table 5. Preparation method: similar to Examples 1-5.

[0134] table 5:

[0135]

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Abstract

The invention discloses a thermoplastic elastomer composition for preparing a flexible printing material for three-dimensional printing rapid prototyping. The thermoplastic elastomer composition comprises the following components in percent by weight: 16.8-90.0% of thermoplastic elastomer, 1.0-49.8% of polyolefin, 0-44.0% of softening agent, 0.1-1.3% of lubricating agent and 0.2-0.3% of antioxidant. The hardness of the thermoplastic elastomer is Shore hardness of 50-90A, and the prepared flexible printing material is low in hardness, has outstanding flexibility and toughness and excellent handfeel and is particularly applied to the fields of special industrial design and consumer applications such as the manufacturing of toys, jewelries and fingerprints.

Description

technical field [0001] The invention belongs to the field of thermoplastic elastomer compositions, and in particular relates to a thermoplastic elastomer composition used for preparing soft printing materials for three-dimensional printing rapid prototyping. The invention also relates to a method for preparing soft printing materials using the thermoplastic elastomer composition. Background technique [0002] Three-dimensional printing (3DP) is a kind of rapid prototyping technology. It is based on digital model files, using materials such as metal, ceramics or polymer materials, and starting shapes such as powder, liquid or filament, through different Printing means, the technology of constructing objects by layer-by-layer printing. [0003] 3D printing is usually achieved using digital technology material printers, which used to be used to make models in the fields of mold making, industrial design, etc., and are now increasingly used in jewelry, footwear, industrial desi...

Claims

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Application Information

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IPC IPC(8): C08L53/02C08L23/00C08L23/08C08L51/06C08L23/16C08L9/02C08L7/00C08L33/04C08L75/04C08L75/08C08L75/06
Inventor 朱叶周
Owner 朱叶周
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