Resin composition and resin product

A technology of resin composition and thermoplastic resin, which is applied in the direction of manufacturing tools, additive manufacturing, additive processing, etc., can solve the problems of not studying multi-component copolymers, and achieve the effect of excellent fracture characteristics

Pending Publication Date: 2021-09-21
BRIDGESTONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, PTL 1 only mentioned the application of multi-component copolymers to rubber products such as tires, but did not study the application of multi-component copolymers to materials for 3D printers

Method used

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  • Resin composition and resin product
  • Resin composition and resin product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3 and comparative example 1～3

[0141] According to the blending formula shown in the following Table 2, each copolymer synthesized as above, commercially available thermoplastic resin (B) and / or or commercially available thermoplastic elastomer (C) to prepare filament samples for FDM 3D printers.

[0142] Mixing and kneading were performed under the conditions of mixing and kneading temperature: 170° C., number of revolutions of the screw: 100 rpm, and mixing and kneading time: 3 minutes. These conditions were set such that the torque during the mixing and kneading process did not exceed a maximum value of 8000N.

[0143] Further, when the filament sample was extruded after mixing and kneading, it was carried out by using a nozzle (diameter: 1.25mm) and reducing the number of revolutions of the screw to 10rpm so that the filament sample had a diameter in the range of 1.7mm to 1.8mm extrude.

[0144] The filament sample thus extruded was then wound at a winding speed of 10 mm / sec by using a fiber winder (a...

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Abstract

The present invention addresses the problem of providing: a resin composition which is suitable as a starting material for 3D printers, and which achieves a good balance between formability and fracture characteristics; and a resin product which uses this resin composition and has excellent fracture characteristics. Solutions for this problem are: a resin composition which is characterized by containing (A) a copolymer that comprises a non-conjugated olefin unit, a conjugated diene unit and an aromatic vinyl unit, (B) a thermoplastic resin and/or (C) a thermoplastic elastomer, and which is also characterized in that the copolymer (A) has a melting point of 55 DEG C or higher; and a resin product which is characterized by the use of this resin composition.

Description

technical field [0001] The present invention relates to resin compositions and resin articles. Background technique [0002] Today, 3D printers are commonly used for modeling 3D objects. Known examples of printing methods in 3D printers include: Fused Deposition Modeling (hereinafter sometimes abbreviated as “FDM” method); material jetting; stereolithography; powder sintering; sheet lamination; Among these examples, FDM is a method of manufacturing a 3D object by heating / melting a resin filament, and then extruding and depositing the filament, that is, a simple method that does not involve a reaction between raw materials, and thus is widely used. use. Examples of conventional raw materials used in 3D printers include acrylonitrile-butadiene-styrene resin (ABS), polylactic acid resin (PLA), and the like. [0003] On the other hand, PTL 1 discloses a multi-polymer comprising a conjugated diene unit, a non-conjugated olefin unit and an aromatic vinyl unit as a material for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08
CPCC08F210/02C08L23/0838C08L23/083B29C64/118B33Y70/00B33Y10/00C08L23/0815C08L53/025C08L23/12C08F236/06C08F212/08C08F2500/27C08F2500/34C08F2500/03C08F4/52C08L23/04C08L53/00
Inventor 芥川惠造中村真明小谷享平高野重永犬束祥子石上淳一
Owner BRIDGESTONE CORP
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