Ultrahigh molecular weight polyethylene steel-plastic composite valve and preparation method thereof

An ultra-high molecular weight, steel-plastic composite technology, which is applied in the field of ultra-high molecular weight polyethylene clad steel-plastic composite valves, can solve the problems of difficult-to-bond materials, lining and steel valve body materials. achieve better performance

Inactive Publication Date: 2010-04-21
SHANDONG KELI NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The price of fluoroplastics is relatively high. In the prior art, adhesives are used for bonding and compounding. Since the surface of tetrafluoroethylene is non-polar, it is a difficult-to-bond material, and there is a problem that the bonding between the lining layer and the steel valve body material is not strong enough.

Method used

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  • Ultrahigh molecular weight polyethylene steel-plastic composite valve and preparation method thereof
  • Ultrahigh molecular weight polyethylene steel-plastic composite valve and preparation method thereof
  • Ultrahigh molecular weight polyethylene steel-plastic composite valve and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1 Manufacture of a steel-plastic composite valve of the present invention

[0052] The ultra-high molecular weight polyethylene material consists of 100 parts by weight of ultra-high molecular weight polyethylene with a viscosity average molecular weight of 1.5 million and

[0053] 10 parts by weight of organic silicon are mixed. The cladding thickness is 8mm.

[0054] A. Manufacture of steel-plastic valve core

[0055] a. Manufacture the metal valve core according to the traditional process

[0056] b. Hot melt molding compound

[0057] Place the ultra-high molecular weight polyethylene material and the metal valve core made in step a in the corresponding mold, heat it until the temperature reaches 160°C-260°C, and pressurize at the same time, the pressure is controlled at 5MPa, keep heat and pressure for an appropriate time, and then cool down When the temperature is below 80°C, open the mold and take out the steel-plastic valve core;

[0058] B. Manuf...

Embodiment 2-6

[0071] According to the method and steps of Example 1, the steel-plastic composite valve of the present invention is manufactured according to the raw material components and operating conditions in Table 1 in parts by weight.

[0072] Table 1

[0073]

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Abstract

The invention relates to an ultrahigh molecular weight polyethylene steel-plastic composite valve and a preparation method thereof. The ultrahigh molecular weight polyethylene steel-plastic composite valve belongs to a valve for transporting liquid material, in particular to an ultrahigh molecular weight polyethylene steel-plastic composite valve with special properties of corrosion resistance, abrasiveness resistance and hard adhesion. The ultrahigh molecular weight polyethylene steel modeling composite valve comprises a metal valve body and a valve core and is characterized in that a layer of ultrahigh molecular weight polyethylene material cladding is adhered to all the element surfaces contacting with the liquid material on the outer surface of the valve core and the inner cavity surface of the valve body; the ultrahigh molecular weight polyethylene material cladding adopts ultrahigh molecular weight polyethylene and is added with one or more than one auxiliary agent component from organic silicon, surface active glass bead, ultra-fine aluminum oxide, ultra-fine carborundum and molybdenum disulfide, wherein the viscosity-average molecular weight of the ultrahigh molecular polyethylene is larger than or equal to 1.5 millions. The invention solves the problems of high production cost caused by higher-price fluoroplastics in the prior art and less firm fastening of a liner and steel valve body materials.

Description

technical field [0001] The invention relates to an ultra-high molecular weight polyethylene steel-plastic composite valve and a manufacturing method thereof, which belong to valves for conveying fluid materials, and in particular to an ultra-high molecular weight polyethylene coating with characteristics of corrosion resistance, wear resistance and difficulty in adhesion Steel-plastic composite valve. Background technique [0002] The valve is an important part of the conveying and control of flowing materials. In use, in addition to meeting the requirements of technical indicators such as temperature and pressure, it must also meet the various needs of materials of different natures, such as corrosion, wear, adhesion, etc. In addition, The sealing performance and service life of the valve are also very important technical indicators. [0003] In order to be suitable for corrosive materials, a steel-plastic composite valve has appeared. A layer of corrosion-resistant polyme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/36F16K3/312F16K27/02F16K27/04C08L23/06C08K13/06C08K3/30C08K3/34
Inventor 王庆昭高步良于元章
Owner SHANDONG KELI NEW MATERIAL CO LTD
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