PC/PMMA fused deposition molding material with pearlescent effect and preparation method of PC/PMMA fused deposition molding material

Abstract

The invention discloses a PC / PMMA fused deposition molding material with a pearlescent effect and a preparation method of the PC / PMMA fused deposition molding material. The PC / PMMA fused deposition molding material comprises the following components, in percentages by weight: 20-60% of high-viscosity PMMA, 32-74% of high-refractive-index PC, 0.5-8% of a core-shell size regulating agent, 0.2-0.5% of an antioxidant, 0.2-0.5% of a light stabilizing agent, and 0.2-0.5% of a lubricant. According to the method provided by the invention, the PC / PMMA fused deposition molding material obtained by the method can form the pearlescent effect with different refraction, and can be used for 3D printing.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a PC / PMMA fused deposition molding material with pearlescent effect and a preparation method thereof. Background technique [0002] Fused deposition modeling (FDM) is one of the 3D printing technologies with the widest application fields and the highest penetration rate. It is widely used in electronic appliances, automobiles, home appliances, medicine, construction, aerospace and other fields. As one of the most important components of FDM technology, materials are widely favored by consumers because of their wide variety and rich functions; the most commonly used materials for FDM technology are polylactic acid (PLA), acrylonitrile-styrene-butadiene ( ABS) etc. It has become a hot topic of FDM materials to modify the toughening, strengthening and functionalization of PLA and ABS to make them have better performance. [0003] The pearlescent effect is always unforget...

AI Technical Summary

Problems solved by technology

[0004] Chinese patent CN105038157A discloses a method of adding 1%-30% golden pearlescent pigment to prepare a glittering golden luster, which has a gold-plated luster and texture similar to gold, but this invention is likely to cause deterioration of the mechanical properties of the material, and may appear The printing process is not smooth, the surface of the product is rough, etc.

However, aluminum powder is easy to wear the screw and damage the equipment during the twin-screw shearing process. At the same time, there are differences in the compatibility between metal materials and plastics, which may lead to lower mechanical properties of the product, such as poor toughness of the material, and printing process. And other issues

[0005] Chinese patent CN109111713A discloses a kind of PC-PMMA composite material and its preparation method and application, although this invention prepares a kind of pearlescent material with PC and PMMA as main material, reduces the interfacial tension of PC and PMMA by adding SAN, thereby increases PC / PMMA PMMA compatibility, thereby reducing delamination, but according to the principle of pearlescent formation, the improvement of PC / PMMA compatibility is not good for the pearlescent effect; in addition, the invention is mainly used in automotive door horn decorative rings and exhaust port bright decorative rings In the process of melt molding, due to the high melt index of PMMA (15-30g / 10min at 220°C / 2.16kg melt index), the printed products will be damaged due to insufficient melt strength. The product collapses or deforms, so it cannot be applied in the field of 3D printing

[0006] Although the wire with pearlescent toner has a certain degree of pearlescent effect, it is limited by the filling of pearlescent toner and its dispersion in the polymer matrix, which deteriorates the performance of the material to a certain extent, and is easy to cause damage during the printing process. Clogging phenomenon, and the gloss, stability and light resistance of printed products are relatively unstable

Images