Preparation method of PP/SEBS suitable for rapid molding

Abstract

The invention relates to a PP / SEBS composite material suitable for rapid molding, and a preparation method thereof. The PP / SEBS composite material is prepared from, by mass, 25-40 parts of polypropylene, 10-30 parts of thermoplastic elastomer SEBS, 10-40 parts of mineral oil, 0-2 parts of an antioxidant and 0-2 parts of a fire retardant. Above raw materials are mixed by a high-speed mixer, and theobtained mixture undergoes extrusion wire-drawing by a twin-screw extruder. Compared with materials in the prior art, the material prepared in the invention has the characteristics of low hardness, improved resistance to weather and heat, excellent printing smoothness and excellent interlayer cohesiveness.

Description

technical field

[0001] The invention belongs to the field of polymer materials and is suitable for rapid prototyping materials, in particular to a PP / SEBS composite material suitable for rapid prototyping and a preparation method thereof. Background technique

[0002] Rapid prototyping technology, that is, a kind of rapid prototyping technology, is a technology based on digital model files, using bondable materials such as metal or plastic, and constructing objects by slicing and layer-by-layer printing. It has been widely developed in the fields of mold design, industrial machinery parts manufacturing, automobiles, aviation, medicine and medicine. Rapid prototyping technologies mainly include stereolithography, laser sintering, fusion lamination, etc. Among them, fusion lamination printing (FDM) is an extremely important one, and its application range is extremely wide.

[0003] The main principle of Fused Deposition Printing Technology (FDM) is to heat the thermoplastic m...