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Valve body of high-strength plastic ball valve

A high-strength plastic and ball valve technology, applied in the field of plastic valve manufacturing, can solve the problems of poor acid and alkali corrosion resistance and high manufacturing cost, and achieve the effects of good mechanical performance, low manufacturing cost and cost reduction.

Inactive Publication Date: 2017-05-31
埃维柯塑料科技(安徽)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the material has poor acid and alkali corrosion resistance and high manufacturing cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A high-strength plastic ball valve body, which is composed of the following raw materials in parts by weight: 40 parts of high-density polyethylene, 12 parts of aromatic polycarbonate, 15 parts of polypropylene, 10 parts of glass fiber, 7 parts of nano-silicon nitride, 9 parts of ethylenediaminepropylmethyldimethoxysilane, 3 parts of diphenylamine, 3 parts of zinc stearate, 4 parts of liquid paraffin.

[0018] The preparation method of the high-strength plastic ball valve body in this embodiment, the steps are as follows: (1) put all raw materials into an oven at 110°C for 2 hours; (2) put high-density polyethylene, aromatic polycarbonate and polypropylene into Mix evenly in a high-speed mixer, dry again, and pass through a 120-mesh sieve; (3) mold closing: close the mold corresponding to the valve body; (4) add all raw materials to the feeding chamber, heat and melt at 230 ° C; (5 ) Use a press to hydraulically melt the melt into the mold cavity with a pressure of 100k...

Embodiment 2

[0020] A high-strength plastic ball valve body, which is composed of the following raw materials in parts by weight: 35 parts of high-density polyethylene, 10 parts of aromatic polycarbonate, 18 parts of polypropylene, 12 parts of glass fiber, 5 parts of nano-silicon nitride, 8 parts of ethylenediaminepropylmethyldimethoxysilane, 5 parts of diphenylamine, 4 parts of zinc stearate, 2 parts of liquid paraffin.

[0021] The preparation method of the high-strength plastic ball valve body in this embodiment, the steps are as follows: (1) put all the raw materials into an oven at 120°C for 2 hours; (2) put high-density polyethylene, aromatic polycarbonate and polypropylene into Mix evenly in a high-speed mixer, dry again, and pass through a 120-mesh sieve; (3) mold closing: close the mold corresponding to the valve body; (4) add all raw materials to the feeding chamber, heat and melt at 260 ° C; (5 ) Use a press to hydraulically melt the melt into the mold cavity with a pressure of ...

Embodiment 3

[0023] A high-strength plastic ball valve body, which is composed of the following raw materials in parts by weight: 45 parts of high-density polyethylene, 15 parts of aromatic polycarbonate, 20 parts of polypropylene, 9 parts of glass fiber, 8 parts of nano-silicon nitride, 10 parts of ethylenediaminepropylmethyldimethoxysilane, 2 parts of diphenylamine, 5 parts of zinc stearate, and 3 parts of liquid paraffin.

[0024] The preparation method of the high-strength plastic ball valve body in this embodiment, the steps are as follows: (1) put all raw materials into an oven at 110°C for 2 hours; (2) put high-density polyethylene, aromatic polycarbonate and polypropylene into Mix evenly in a high-speed mixer, dry again, and pass through a 120-mesh sieve; (3) mold closing: close the mold corresponding to the valve body; (4) add all raw materials to the feeding chamber, heat and melt at 220 ° C; (5 ) Use a press to hydraulically melt the melt into the mold cavity with a pressure of ...

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Abstract

The invention provides a valve body of a high-strength plastic ball valve, and relates to the technical field of plastic valve manufacturing. The valve body is composed of the following raw materials in parts by weight: 35-45 parts of high-density polyethylene, 10-15 parts of aromatic polycarbonate, 15-20 parts of polypropylene, 9-12 parts of glass fiber, 5-8 parts of nano silicon nitride, 8-10 parts of ethylenediamine propylmethyldimethoxysilane, 2-5 parts of diphenylamine, 3-5 parts of zinc stearate and 2-4 parts of liquid paraffin. A preparation method of the valve body of a high-strength plastic ball valve comprises the following steps: drying the raw materials; uniformly mixing the high-density polyethylene, the aromatic polycarbonate and the polypropylene, drying, and screening; and heating and melting all the raw materials, pressing the melt liquid into the cavity of a mold through a pressing machine, maintaining the pressure, demolding, and taking out the product. The valve body prepared by the method has the advantages of high strength, corrosion resistance, favorable mechanical property, long service life and low preparation cost.

Description

technical field [0001] The invention relates to the technical field of plastic valve manufacturing, in particular to a high-strength plastic ball valve body. Background technique [0002] With the rapid development of science and technology, the continuous improvement of production technology and product structure, ball valves have rapidly developed into a major valve category since its appearance in the 1950s, and are mainly used for cutting, distributing and changing valves in pipelines. The flow direction of the medium can be closed tightly only by rotating 90° for operation and a small rotational torque. The valve body is one of the core components of the ball valve. It needs to have good mechanical properties and chemical stability to meet the needs of the valve. At present, the material of the valve body is mainly cast iron. Chinese patent 201510000172.3 discloses a high-strength and wear-resistant hydraulic The valve body and its production process, by adding ferroch...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L69/00C08L23/12C08L91/06C08K13/04C08K7/14C08K3/34C08K5/18C08K5/098
CPCC08L23/06C08K2201/011C08L2205/035C08L2207/062C08L69/00C08L23/12C08L91/06C08K13/04C08K7/14C08K3/34C08K5/18C08K5/098
Inventor 瞿晓华
Owner 埃维柯塑料科技(安徽)有限公司
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