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PVC plastic pipe

A technology of plastic pipes and PVC resin, applied in the field of PVC plastic pipes, can solve the problems of adding pipes, affecting the processing performance of polymer matrix materials, and large filling volume, so as to improve product quality, increase decomposition temperature and combustion residual rate, and improve performance effect

Inactive Publication Date: 2019-03-01
HUBEI TUNCANG PIPE TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, single inorganic flame retardants such as aluminum hydroxide and magnesium hydroxide have the disadvantages of large filling amount, which seriously affect the processing performance of polymer matrix materials and the physical and mechanical properties of products, especially for the production of pipes, which will increase the "Fisheye"

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] A PVC plastic pipe made of the following main components by weight: 50 parts of PVC resin, 3 parts of sodium stearate stabilizer, 1 part of titanium dioxide, 3 parts of aluminum hydroxide, 1 part of calcium carbonate, 02 parts of paraffin , 0.1 parts of anti-ultraviolet agent.

[0011] The preparation method of the PVC plastic pipe includes the following steps: (1) Weigh each raw material, first heat mix it in a hot mixer at 110°C, and then cold mix it in a cold mixer at 40°C; (2) The mixed material is sent into the screw extruder, the screw speed is 20r / min, the die connector temperature is 160°C, and the die temperature is 210°C; (3) cooling by water spraying.

Embodiment 2

[0013] A PVC plastic pipe made of the following main components by weight: 60 parts of PVC resin, 3 parts of sodium stearate stabilizer, 3 parts of titanium dioxide, 3 parts of aluminum hydroxide, 1 part of calcium carbonate, 0.3 parts of paraffin , 0.3 parts of anti-ultraviolet agent.

[0014] The preparation method of the PVC plastic pipe comprises the following steps: (1) Weigh each raw material, first heat mix it in a heat mixer at 100°C, and then cold mix it in a cold mixer at 30°C; (2) The mixed material is sent into the screw extruder, the screw speed is 30r / min, the die connector temperature is 140°C, and the die temperature is 150°C; (3) cooling by water spraying.

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Abstract

The invention relates to a PVC plastic pipe. The PVC plastic pipe is made from the following main components in parts by weight: 50-60 parts of a PVC resin, 2-3 parts of a sodium stearate stabilizer,1-3 parts of titanium dioxide, 2-3 parts of hydrogen alumina, 0.5-1 part of calcium carbonate, 0.2-0.3 part of paraffin, 0.1-0.3 part of an anti-UV agent. The anti-UV agent can improve the aging resistance, and a used composite flame retardant has better application performance and can improve the decomposition temperature and combustion residual rate of the materials, effectively inhibit the cracking of polyvinyl chloride main chains and enhance the thermal stability of the materials; and by adoption of a metal soap stabilizer, the performance of the product is improved, the production cost is reduced, and significance is brought to develop distinctive plastic steel door and window profiles and water feeding and discharging pipes and improve the product quality and the market competitiveness.

Description

technical field [0001] The invention relates to a PVC plastic pipe. Background technique [0002] According to various pipe standards, the pipe formula includes: PVC resin, impact modifier, stabilizer, processing modifier, filler, colorant and external lubricant, etc. At present, the heat stabilizers mainly used in China are: tribasic lead sulfate and dibasic lead salt, combined metal soaps, composite lead salt stabilizers, rare earth composite stabilizers, organotin stabilizers, etc. Stabilizers containing heavy metals (such as Pb, Ba, Cd, etc.) are harmful to human health, and the amount of these stabilizers in water supply pipe formulations is limited. When a single-screw extruder is used, the heating time of the material is longer than that of a twin-screw extruder, and the amount of stabilizer should be increased by more than 25%. [0003] Usually, the matching external lubricant is selected according to the stabilizer. ① Organotin stabilizers have good compatibility...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L91/06C08K13/02C08K3/22C08K5/098C08K3/26
CPCC08L27/06C08K2003/2227C08K2003/2241C08K2003/265C08L2201/08C08L2203/18C08L91/06C08K13/02C08K3/22C08K5/098C08K3/26
Inventor 张磊
Owner HUBEI TUNCANG PIPE TECH DEV CO LTD
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