Elastomer coated carbonate calcium particles toughening PC / ABS alloy

Abstract

The invention discloses an elastomer coated carbonate calcium particles toughening PC / ABS alloy, which comprises the following components by weight: 50%-60% of PC, 20%-30% of ABS, 5%-10% of calcium carbonate particles, 0.5%-2% of diisocyanate, 2%-5% of diol, 5%-10% of a flame retardant, 1%-3% of a compatilizer, 0.1%-0.5% of an antioxidant, and 0.1%-1% of a lubricant. The invention has the beneficial effect that in situ polymerization is employed for generation of polyurethane elastomer which coats on calcium carbonate particles for the formation of a core-shell structure with calcium carbonate particles as the core and elastomer as the shell, so that the calcium carbonate particles and elastomer play their respective advantages in PC / ABS alloy blend modification and realize good cooperative reinforcing and toughening effect; meanwhile, a proper amount of flame retardant and compatible agent are added in the PC / ABS alloy system to significantly improve the compatibility of PC and ABS and flame retardant performance of blend system.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to an elastomer-coated calcium carbonate particle toughened PC / ABS alloy. Background technique [0002] PC / ABS alloy (polycarbonate / acrylonitrile-butadiene-styrene copolymer) has good formability and low temperature impact resistance, high heat distortion temperature and light stability, and is an ideal performance Polymer alloys can be used in many ways. However, because PC / ABS alloy belongs to a partially compatible polymer alloy system, the toughness of PC / ABS is poor and the mechanical properties are affected, which limits its application in some fields. Therefore, in order to improve the performance of PC / ABS alloy and expand its application range, it is usually used to add a third component, such as compatibilizer, inorganic particles, elastomer, etc., which can significantly improve the mechanical properties of the alloy material. Among them, adding elastomers to ...

AI Technical Summary

Problems solved by technology

Among them, adding elastomers to PC / ABS alloys can have a good toughening modification effect, but when used alone, the rigidity of PC / ABS alloys is reduced; adding inorganic particles to PC / ABS alloys alone improves the total toughness. The rigidity in the mixed system, but also reduces its toughness; the elastomer and inorganic particles are used together to modify the PC / ABS alloy, while improving the strength and toughness, the elastomer and the inorganic particles will interact and cannot make PC well. / The mechanical properties of ABS get the expected modification effect