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Strong-strength corrosion-resistant water meter shell and preparation process for same

A corrosion-resistant and high-strength technology, applied in the field of high-strength corrosion-resistant water meter housing and its preparation technology, can solve the problems of low hardness, insufficient pressure and tensile strength, poor cold and heat resistance, etc., and achieve a small thermal expansion coefficient. , poor compatibility, the effect of improving mechanical strength

Inactive Publication Date: 2015-12-09
徐怀洪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are also defects such as low hardness, insufficient compressive and tensile strength, and poor cold and heat resistance.
The above defects have led to its inability to really replace the metal case water meter and its large-scale use

Method used

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  • Strong-strength corrosion-resistant water meter shell and preparation process for same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A high-strength corrosion-resistant water meter housing is prepared from the following raw materials in parts by weight:

[0019] 1 part of silica gel powder, 1 part of talc powder, 1 part of montmorillonite, 1 part of boron nitride, 1 part of silicon carbide, 1 part of aluminum hydroxide, 1 part of oleic acid amide, 2 parts of borax, 2 parts of triphenyl phosphate, 2 parts of zinc borate, 3 parts of polyvinyl alcohol, 5 parts of egg shell, 6 parts of kaolin, 8 parts of aluminum nitride, 8 parts of triallyl cyanurate, 20 parts of polyvinyl chloride, 40 parts of hydrogenated nitrile rubber, 50 parts of phenolic resin.

[0020] Among them, the particle size of silica gel powder, talc powder, montmorillonite, boron nitride, aluminum hydroxide, zinc borate, kaolin and aluminum nitride is controlled at 200 mesh; the particle size of silicon carbide is controlled at 100nm.

[0021] The preparation method of the above shell comprises the following steps:

[0022] Step 1) Pre...

Embodiment 2

[0027] A high-strength corrosion-resistant water meter housing is prepared from the following raw materials in parts by weight:

[0028] 2 parts of silica gel powder, 2 parts of talc powder, 2 parts of montmorillonite, 2 parts of boron nitride, 2 parts of silicon carbide, 2 parts of aluminum hydroxide, 2 parts of oleic acid amide, 3 parts of borax, 3 parts of triphenyl phosphate, 3 parts of zinc borate, 5 parts of polyvinyl alcohol, 7 parts of egg shell, 8 parts of kaolin, 10 parts of aluminum nitride, 10 parts of triallyl cyanurate, 25 parts of polyvinyl chloride, 45 parts of hydrogenated nitrile rubber, 60 parts of phenolic resin.

[0029] Among them, the particle size of silica gel powder, talc powder, montmorillonite, boron nitride, aluminum hydroxide, zinc borate, kaolin and aluminum nitride is controlled at 200 mesh; the particle size of silicon carbide is controlled at 200nm.

[0030] The preparation method of the above shell comprises the following steps:

[0031] St...

Embodiment 3

[0036] The performance test of the water meter housing material prepared by the present invention:

[0037] 1. Perform performance tests on the shells prepared in Examples 1 and 2 of the present invention; the bending strength is tested according to ASTMD790; the tensile strength is tested according to ASTMD638; the notched impact strength is tested according to ASTMD256. The test results of the obtained materials are shown in Table 1:

[0038] Table 1

[0039]

[0040] 2. The present invention detects the mechanical properties of the above-mentioned shell materials at -70°C, among which the bending strength and tensile strength are kept above 98% in the 120-hour test, which has good stability; the shells of Examples 1 and 2 are Placed in hot water at 100°C for 24 hours, after taking it out, there is no obvious change on the surface, and the bending strength and tensile strength both maintain more than 95%.

[0041] 3. Corrosion resistance test:

[0042] Corrosion test i...

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Abstract

The invention belongs to the field of flow measurement, and discloses a strong-strength corrosion-resistant water meter shell and a preparation process for the same. The water meter shell is prepared from the following raw materials: silica gel powder, talc powder, montmorillonite, boron nitride, silicon carbide, aluminum hydroxide, oleamide, borax, triphenyl phosphate, zinc borate, polyvinyl alcohol, egg shells, kaolin, aluminum nitride, triallyl cyanurate, polyvinyl chloride, hydrogenated butadiene-acrylonitrile rubber and phenolic resin. According to the water meter shell and the preparation process for the same, the raw material compatibility is reasonable, and the performance of a plastic shell is improved.

Description

technical field [0001] The invention belongs to the field of flow measurement, and in particular relates to a high-strength corrosion-resistant water meter casing and a preparation process thereof. Background technique [0002] Water meters are instruments for measuring water flow, and are generally divided into two types: volumetric water meters and velocity water meters. Traditional water meter housing materials are mainly cast iron, brass, and stainless steel. The water meter case made of cast iron is low in price and high in strength. The disadvantage is that the casting is rough, and it is easy to rust and corrode to pollute the water quality. The water watch case made of brass is easy to process, exquisite in casting, and corrosion-resistant. The disadvantage is that the price is high, the rusty patina is toxic, and the lead in brass is also a harmful substance to the human body. Stainless steel is corrosion resistant and does not rust, making it an ideal material ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/06C08L15/00C08L27/06C08L29/04C08K13/02C08K3/34C08K3/38C08K3/22C08K5/20C08K5/523C08K3/28
Inventor 徐怀洪徐燕徐国刚徐莉莉
Owner 徐怀洪
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