A kind of ABS non-migration-resistant high flame-retardant PVC material and its preparation method

Abstract

The invention discloses a PVC (polyvinyl chloride) material with ABS (acrylonitrile-butadiene-styrene) migration resistance and high flame retardancy. The PVC material comprises raw material components in parts by weight as follows: 100 parts of PVC powder, 15-90 parts of an environment-friendly plasticizer, 15-65 parts of titanate modified wollastonite powder, 3-8 parts of a stabilizing agent, 10-50 parts of a flame retardant and 2-10 parts of processing aids, wherein the environment-friendly plasticizer is prepared from epoxy pupa oil and a multifunctional ester plasticizer in a mass ratio being (1-2):(2-3) through compounding. The invention further discloses a preparation method of the PVC material with the ABS migration resistance and high flame retardancy. Compared with the prior art, the PVC material is good in ABS migration resistance, free of indentation, non-cracking, high in toughness, good in flame retardant effect, high in strength and excellent in comprehensive performance, content of phthalate is smaller than 100 PPM, content of polycyclic aromatic hydrocarbon is smaller than 10 PPM, the flame retardancy can reach V-0 level, and besides, the PVC material is low in cost, high in cost performance, good in low-temperature resistance, good in processability and excellent in market prospect.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to an ABS non-migration-resistant high flame-retardant PVC material and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) is one of the earliest industrialized and widely used general-purpose thermoplastics. It has the advantages of light weight, high strength, insulation, flame retardancy, corrosion resistance, excellent comprehensive performance, low price and wide source of raw materials. But there are also the following disadvantages: 1. Poor toughness, easy to be brittle when impacted, so it cannot be used as a structural material. In addition, the brittleness of polyvinyl chloride is greatly affected by temperature. The lower limit of general PVC products is -15°C. The lower limit of use of soft PVC is -30°C; 2. Poor thermal stability, it begins to decompose HCl at 100°C, and decomposes more rapidly when it is higher than 150°C, and...

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Problems solved by technology

But there are also the following disadvantages: 1. Poor toughness, easy to be brittle when impacted, so it cannot be used as a structural material. In addition, the brittleness of polyvinyl chloride is greatly affected by temperature. The lower limit of general PVC products is -15°C. The lower limit of use of soft PVC is -30°C; 2. Poor thermal stability, it begins to decompose HCl at 100°C, and decomposes more rapidly when it is higher than 150°C, and the melting temperature of PVC is about 210°C; 3. PVC The viscosity is extremely high and the fluidity is extremely poor, which limits its use to a certain extent

Generally used hard engineering plastics such as ABS and soft plastics such as PVC are easy to migrate due to the external softness and internal hardness when the products are processed by injection molding. The stress will cause the ABS product layer to crack, reduce the product quality, and cause defective products. High rate

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