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A Nano Additive Film for Miniaturized High Precision Diaphragm Gas Meter

A nano-additive, membrane-type gas meter technology, applied in instruments, measuring devices, volume metering, etc., can solve the problems of gas meter internal leakage, film wrinkling, insufficiency, etc., to reduce filling amount, improve wear resistance, The effect of good high temperature stability

Active Publication Date: 2020-05-29
ZENNER METERING TECH (SHANGHAI) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high speed, after a long-term durability test, the film will wrinkle, crack, and finally rupture, resulting in internal leakage of the gas meter.
The current domestic film durability test can reach up to about 3000h, which can meet the 2000h test stipulated by the Chinese standard, but cannot meet the 5000h test stipulated by the European standard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Weigh 31 parts of nano-niobium dioxide, 26 parts of nano-polysilicon, 22 parts of nano-boron carbide, and 21 parts of nano-strontium titanate to make nano-additive A, and then coat nano-additive A on both sides of nitrile rubber to make nano-additive The content in nitrile rubber is 6wt.%, and then the PBT polyester fiber skeleton is clothed on the nitrile rubber with nano additives on both sides.

[0020] Turn on the vulcanization press, heat the flat vulcanization press to 160°C, and adjust its pressure at the same time.

[0021] Clean the mold and apply a release agent on it, then put the mold into the heating plate of the press to preheat for 10 minutes, take it out, put the prepared nitrile rubber into the mold, add nano-ZnO, and put the mold back again Between the heating plates, pressurize to 2.5 MPa, repeatedly deflate the mold three times, then maintain the pressure, and start timing. When the time reaches 15 minutes, take out the mold, demould, and obtain the ...

Embodiment 2

[0023] Weigh 32 parts of nano-niobium dioxide, 25 parts of nano-polysilicon, 21 parts of nano-boron carbide, and 22 parts of nano-strontium titanate to make nano-additive B, and then coat nano-additive B on both sides of nitrile rubber to make nano-additive The content in nitrile rubber is 6.5wt.%, and then the PBT polyester fiber skeleton is clothed on the nitrile rubber with nano additives on both sides.

[0024] Turn on the vulcanization press, heat the flat vulcanization press to 160°C, and adjust its pressure at the same time.

[0025] Clean the mold and apply a release agent on it, then put the mold into the heating plate of the press to preheat for 10 minutes, take it out, put the prepared nitrile rubber into the mold, add nano-ZnO, and put the mold back again Between the heating plates, pressurize to 2.5 MPa, repeatedly deflate the mold three times, then maintain the pressure, and start timing. When the time reaches 15 minutes, take out the mold, demould, and obtain th...

Embodiment 3

[0027] Weigh 36 parts of nano-niobium dioxide, 25 parts of nano-polysilicon, 21 parts of nano-boron carbide, and 18 parts of nano-strontium titanate to make nano-additive C, and then coat nano-additive C on both sides of nitrile rubber to make nano-additive The content in nitrile rubber is 7wt.%, and then the PBT polyester fiber skeleton is clothed on the nitrile rubber with nano additives on both sides.

[0028] Turn on the vulcanization press, heat the flat vulcanization press to 160°C, and adjust its pressure at the same time.

[0029] Clean the mold and apply a release agent on it, then put the mold into the heating plate of the press to preheat for 10 minutes, take it out, put the prepared nitrile rubber into the mold, add nano-ZnO, and put the mold back again Between the heating plates, pressurize to 2.5 MPa, repeatedly deflate the mold three times, then maintain the pressure, and start timing. When the time reaches 15 minutes, take out the mold, demould, and obtain the ...

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Abstract

The invention relates to the technical field of production and manufacturing of gas meter part, particularly relates to a nanometer additive membrane for miniaturizing membrane type gas meter with high precision, comprising: nitrile rubber and meter additive. The manufacture method comprises the steps of: distributing polybutylece terephthalate (PBT) polyester fiber skeleton on nitrile rubber withthe nanometer additive on two sides, heating a plate vulcanizing machine to 160 DEG C; coating mold release agent on the mold, putting the mold between heating plates of a press and preheating for 10minutes, putting the nitrile rubber into the preheated mold; adding nanometer ZnO as active agent, then putting the mold back between heating plates, pressurizing it to 2.5 MPa, repeating deflation of the mold three times; maintaining pressure, taking out the mold, and demolding when vulcanization time reaches 15 minutes; obtaining the nanometer additive membrane. According to the invention, nanometer additive with higher specific surface area is introduced; amount of fill required for any given performance can be substantially reduced, good integrated mechanical property of the membrane canmaintained, and processing performance, static mechanical property and dynamic mechanical property of the membrane can be balanced.

Description

technical field [0001] The invention relates to the technical field of production and manufacturing of gas meter components, in particular to a nano-additive coating for miniaturized high-precision membrane gas meters. Background technique [0002] At present, domestic household gas meter products are almost all diaphragm meters with volumetric working principle. In terms of structure, the integrated movement watch with steel shell is the main one, and the assembled movement watch with aluminum shell accounts for about 1 / 4 of the total. The new flow sensing principle is adopted or the existing flowmeter related technology is applied to the membrane gas meter. Domestic enterprises are still in the initial stage of technical preparation and product development. Domestic enterprises in mechanical diaphragm gas meters have a relatively large advantage, but the profit margin is small. The economic benefits of smart meters with electronic devices are relatively good, but the tech...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F15/16
CPCG01F15/16
Inventor 许军李诗华任海军徐荣华王文军
Owner ZENNER METERING TECH (SHANGHAI) LTD
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