Environmentally friendly flame-retardant polyvinyl chloride composition for drain pipe and preparation method thereof

Abstract

The invention relates to an environmentally friendly flame-retardant polyvinyl chloride composition for a drain pipe and a preparation method thereof. The environmentally friendly flame-retardant polyvinyl chloride composition for a drain pipe comprises, by mass, 100 parts of polyvinyl chloride, 2 to 10 parts of a compound zinc-based flame-retardant heat stabilizer, 1 to 5 parts of a lubricant, 0 to 15 parts of an impact modifier, 0.5 to 5 parts of a pigment and 0 to 60 parts of a filler. The compound zinc-based flame-retardant heat stabilizer comprises, by mass, 100 parts of zinc phosphite, 10 to 30 parts of a synergistic stabilizer, 10 to 15 parts of tripentaerythritol phosphite, 35 to 70 parts of nano-hydrotalcite and 15 to 40 parts of halloysite. The drain pipe prepared from the environmentally friendly flame-retardant polyvinyl chloride composition retains the mechanical properties of the pipe, has excellent flame retardancy and smoke suppression performances, provides convenience for production of a building drain pipe having high fire safety and satisfies requirements on comprehensive lead-free development of a PVC pipe.

Description

technical field [0001] The invention relates to the technical field of polyvinyl chloride composite materials, in particular to an environmentally friendly flame-retardant polyvinyl chloride composition for drain pipes and a preparation method thereof. Background technique [0002] PVC drainage pipe has the characteristics of light weight, low price, small resistance, large drainage, smooth and beautiful surface, corrosion resistance, not easy to block, and convenient installation. It is widely used in indoor drainage of residential buildings and public buildings. [0003] With the improvement of safety awareness, people have higher and higher requirements for flame retardancy and smoke suppression of architectural plastic drainage pipes. To improve the flame retardant and smoke suppression performance of the drainage pipe, the usual method is to add a flame retardant and smoke suppressant to the material formula. However, with the addition of the flame retardant and smoke s...

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Problems solved by technology

To improve the flame retardant and smoke suppression performance of the drainage pipe, the usual method is to add a flame retardant and smoke suppressant to the material formula. However, with the addition of the flame retardant and smoke suppressant, the performance of the pipe will decline rapidly

Therefore, the amount of flame retardant and smoke suppressant added to the product is often small, but it is obviously difficult to meet people's growing demand for fire safety of building materials

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