High-shock-resistance and high-photo-oxidation-aging-resistance polyvinyl chloride injection material composition

Abstract

The invention discloses a high-shock-resistance and high-photo-oxidation-aging-resistance polyvinyl chloride injection material composition and belongs to the technical field of plastic processing. The composition comprises the following components in parts by weight: 100 parts of polyvinyl chloride resin, 0.1-0.5 part of heat stabilizers, 5-10 parts of impact modifiers, 0.4-0.9 part of complex antioxidants, 0.7-2.7 parts of complex light stabilizers, 0.5-3.5 parts of phosphite ester and lubricants, 1.5-5.0 parts of rutile titanium dioxide and 3.0-7.0 parts of calcium carbonate auxiliary agents. Compared with the prior art, the high-shock-resistance and high-photo-oxidation-aging-resistance polyvinyl chloride injection material composition, disclosed by the invention, has excellent shock resistance, the early-stage and long-term photo aging resistance and the long-term oxidation resistance; therefore, the composition is suitable for outdoor use and the application field of a toughened polyvinyl chloride injection material is broadened.

Description

technical field [0001] The invention discloses a polyvinyl chloride injection molding material composition with high impact resistance and high light and oxygen aging resistance, belonging to the technical field of plastic processing. Background technique [0002] Polyvinyl chloride (PVC) is a widely used material whose output is in the forefront of the world's resin output. However, the defects of PVC's toughness and poor light and oxygen stability greatly limit the further development and application of PVC. The emergence of toughened polyvinyl chloride successfully solved the shortcoming of high brittleness of polyvinyl chloride products, and expanded its application field to earthquake resistance, anti-ground subsidence and other fields. However, most of the toughened PVC only involves PVC-M pipes, and there is little research on toughened PVC injection molding materials, such as toughened PVC pipe fittings and other toughened PVC injection molding materials. There are ...

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Problems solved by technology

The light stabilizer of this invention adopts hindered amine light stabilizer and benzotriazole light stabilizer, so that the light stabilizing effect of the material is good, but the oxygen aging resistance is relatively weak, and the antioxidant effect of single antioxidant bisphenol A The effect is not as good as the new compound antioxidant

[0004] CN101967251A discloses a transparent impact-resistant and weather-resistant polyvinyl chloride mixture. The main ingredients of the mixture include 80-90 parts by weight of polyvinyl chloride and 1-20 parts by weight of acrylic transparent impact modifiers. The sum of parts by weight is 100; based on the main material of 100 parts by weight of polyvinyl chloride and acrylic transparent impact modifier, the auxiliary materials added are 0.5 to 8 parts by weight of organotin heat stabilizer, 0-3 parts by weight of

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