Anticorrosive PVC modified material and preparation method thereof

Abstract

The invention relates to the technical field of PVC materials, and concretely relates to an anticorrosive PVC modified material and a preparation method thereof. The anticorrosive PVC modified material comprises, by weight, 80-120 parts of PVC resin, 50-70 parts of a plasticizer, 20-30 parts of a filler, 4-8 parts of an impact modifier, 3-5 parts of a heat stabilizer, 1-2 parts of a synergistic agent, 0.6-1.0 part of a lubricant and 0.3-0.7 parts of an antioxidant. All performances of the anticorrosive PVC modified material prepared through strictly controlling the weight ratio of all above raw materials exceed national stands, and the anticorrosive PVC modified material has the advantages of good anticorrosion effect, environmental protection, excellent temperature and weather resistance, high strength, excellent impact resistance, good flame retardation effect, excellent processing properties and excellent comprehensive performances.

Description

Technical field [0001] The invention relates to the technical field of PVC materials, in particular to a corrosion-resistant PVC modified material and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) is one of the earliest industrialized and widely used general thermoplastics. It has the advantages of light weight, high strength, insulation, flame retardant, corrosion resistance, excellent comprehensive performance, low price and wide raw material sources; but also There are the following shortcomings: 1. Poor toughness, easily brittle and cracked 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 use for general PVC products is -15°C, soft The lower limit of the use of PVC is -30℃; 2. The thermal stability is poor. It starts to decompose HCl at 100℃, and decomposes more rapidly when it is higher than 150℃. The melting temperatur...

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Problems solved by technology

[0002] Polyvinyl chloride (PVC) is one of the earliest industrialized and widely used general-purpose thermoplastics. It has light weight, high strength, insulation, flame retardancy, corrosion resistance, It has the advantages of excellent comprehensive performance, low price and wide source of raw materials; but it also has 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. Large, the lower limit of general PVC products is -15°C, and the lower limit 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. The melting temperature of PVC is about 210°C; 3. The viscosity of PVC is extremely high and its fluidity is extremely poor, which limits its use to a certain extent.

[0006] The above-mentioned existing PVC materials have poor anti-corrosion properties, therefore, it is particularly necessary to develop an anti-corrosion PVC material