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A kind of detection method of molding porosity

A detection method and technology of porosity, applied in the field of detection of forming porosity, can solve the problems of quantitative control of non-porosity, inconvenient detection of porosity, inconvenient measurement, etc., and achieve the effect of wide application range

Active Publication Date: 2016-05-25
HEFEI WANLI TIRE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the porosity of the rubber after molding involves measuring the volume of the rubber before and after molding, and for the processing method of continuous feeding and discharging, it is inconvenient to measure the volume before and after molding, so the general method for measuring the porosity is There is no good method and device to measure the porosity of rubber accurately and conveniently by experience or by referring to standard photos, so there is no quantitative control of the porosity after molding.
Looking at other polymer material processing industries, there is also the problem of inconvenient detection of porosity after molding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The detection method of the forming porosity provided by the present embodiment comprises the following steps:

[0017] (1), using the formula: Measure the mass of the rubber sample in air and in water twice to calculate the density of the rubber sample, m 空气中 Represents the mass of the rubber sample measured in air, m 水中 Represents the mass of the rubber sample measured in water;

[0018] (2) After measuring the density of the rubber sample before and after molding, according to the formula: Calculate the molding porosity of the rubber sample, ρ 成型前 Represents the density of the rubber sample before molding, ρ 成型后 Represents the density of the rubber sample after molding.

[0019] For rubber samples, the density before molding: use the density of the rubber sample before molding after vulcanization, or use the density data measured when the rubber sample of the same batch is used to control the final rubber quality, or use the rubber sample of this kind The sta...

Embodiment 2

[0026] The detection method of the forming porosity provided by the present embodiment comprises the following steps:

[0027] (1), using the formula: Measure the mass of the rubber sample in air and in water twice to calculate the density of the rubber sample, m 空气中 Represents the mass of the rubber sample measured in air, m 水中 Represents the mass of the rubber sample measured in water;

[0028] (2) After measuring the density of the rubber sample before and after molding, according to the formula: Calculate the molding porosity of the rubber sample, ρ 成型前 Represents the density of the rubber sample before molding, ρ 成型后 Represents the density of the rubber sample after molding.

[0029] In step (1), the water used when testing the quality of the rubber sample in water needs to be distilled water; and the test is carried out in a standard laboratory temperature, the standard laboratory temperature is 23°C ± 2°C, and the test rubber sample needs to reach the following ...

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Abstract

The invention discloses a detection method of a molding porosity. The method comprises the steps that: (1) a formula below is adopted; masses of a sample in air and in water are respectively measured in two times, and sample density is calculated, wherein m in air represents the mass of the sample measured in air, and .m in water represents the mass of the sample measured in water; (2) densities of a rubber and plastic material before and after molding are measured; and the porosity of the rubber and plastic material is calculated according to a formula below, wherein rho before molding represents the density of the sample before molding, and rho after molding represents the density of the sample after molding. Compared with prior arts, with the molding porosity detection method provided by the invention, rubber and plastic material porosity after molding can be rapidly and quantitatively detected. Therefore, the method has an important significance in controlling product quality. Because the rubber and plastic material is widely applied in industrial productions and daily lives, the method and a device for detecting material molding porosity have wide application scope.

Description

technical field [0001] The invention relates to the field of polymer material processing, in particular to a method for detecting forming porosity. Background technique [0002] At present, in the production process of rubber tires, the porosity of the rubber parts after extrusion molding is an important process control index, but how to accurately and conveniently measure the porosity after extrusion molding of rubber materials has always been a problem. A conundrum in the tire manufacturing industry. Since the porosity of the rubber after molding involves measuring the volume of the rubber before and after molding, and for the processing method of continuous feeding and discharging, it is inconvenient to measure the volume before and after molding, so the general method for measuring the porosity is There is no good method and device to accurately and conveniently measure the porosity of the rubber by experience or visually measuring the cross-section porosity with refere...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N9/36
Inventor 彭锦玉罗吉良黎勤珠丘西宁陈佛国
Owner HEFEI WANLI TIRE CO LTD
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