CN102854089B - A kind of detection method of shaped air holes rate - Google Patents
A kind of detection method of shaped air holes rate Download PDFInfo
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- CN102854089B CN102854089B CN201210337539.7A CN201210337539A CN102854089B CN 102854089 B CN102854089 B CN 102854089B CN 201210337539 A CN201210337539 A CN 201210337539A CN 102854089 B CN102854089 B CN 102854089B
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Abstract
The present invention discloses a kind of detection method of shaped air holes rate, and it comprises the steps: (1), using formula:Record respectively at twice the density that calculates sample after the quality of sample in air and in water, mIn airRepresent the quality that sample is measured in air, mIn waterRepresent the quality that sample is measured in water; (2), surveyed after the density before rubber-plastics material moulding, after moulding, by formula:Calculate the porosity of rubber-plastics material, ρBefore mouldingRepresent the density before sample moulding, ρAfter mouldingRepresent the density after sample moulding. Compared with prior art, the detection method of shaped air holes rate provided by the invention, can measure the porosity after rubber-plastics material moulding by fast quantification, significant to controlling product quality; And because product of rubber and plastic is widely used in industrial production and daily life, the method and apparatus of the forming materials porosity should have very wide range of application.
Description
Technical field
The present invention relates to field of high polymer material processing, exactly refer to a kind of detection side of shaped air holes rateMethod.
Background technology
At present, in the production process of rubber tyre, the rubber components porosity after sizing material extrusion molding is oneThe technology controlling and process index that item is important, but how accurately and easily to measure the porosity one after sizing material extrusion moldingIt is directly the manufacturing difficult problem of puzzlement tire. Because relating to, rubber-moulding posterior spiracle rate to survey sizing material mouldingBefore and after volume, and for the processing mode of continuous feeding, discharging, the forward and backward volume of moulding is not allJust measure, therefore survey the general method adopting of the porosity and be by rule of thumb or reference standard photo range estimation cross section poreRate, the method and apparatus there is no can accurately and easily be measured the rubber porosity, therefore also not to after mouldingThe porosity is quantitatively controlled. Make a general survey of other processing of high molecular material industries, also have moulding posterior spiracle rate notJust the problem detecting. Because the macromolecular materials such as rubber are widely used in industrial production and daily lifeIn, quantitatively control the porosity after elastomeric material moulding significant to controlling product quality, so becomeThe checkout gear of the type porosity also has the very wide scope of application.
Summary of the invention
For above-mentioned defect, the technical problem that the present invention solves is to provide a kind of detection side of shaped air holes rateMethod, can measure the porosity after elastomeric material moulding by fast quantification, has important meaning to controlling product qualityJustice; And because rubber is widely used in industrial production and daily life, the side of the forming materials porosityMethod and device should have very wide range of application.
In order to solve above technical problem, the detection method of shaped air holes rate provided by the invention, comprise asLower step:
(1), using formula:Record respectively at twice rubbery sample in airWith the density that calculates rubbery sample after quality in water, mIn airRepresent that rubbery sample measures in airQuality, mIn waterRepresent the quality that rubbery sample is measured in water;
(2), survey after the rubbery sample density before finishing type, after moulding, by formula:Calculate the shaped air holes rate of rubbery sample, ρBefore mouldingRepresent the density before rubbery sample moulding, ρAfter mouldingRepresentativeDensity after rubbery sample moulding.
Preferably, in step (2), for rubbery sample, the density before moulding: with rubber before mouldingDensity after glue sample sulfuration, or the density number recording during by batch rubbery sample control finished composition quality togetherAccording to, or by the standard density of this kind of rubbery sample; Density after moulding: sample on the rubber after mouldingThe density recording.
Preferably, in step (1), when the quality of testing rubber sample in water, water used need be distillationWater; And test in standard test room temperature.
Preferably, in step (1), testing rubber sample need to reach following condition:
Sampling requirement: for each sample mass is at least 1 gram, and rubbery sample surfacing, smooth,Without greasy dirt, without bubble and free from admixture;
Temperature regulates: the rubbery sample doing before moulding and after moulding all should be lowered joint in standard test room temperatureMore than 30 minutes, or regulate more than 5 minutes in laboratory standard temperature tank;
Sample cleans: when the weight of testing rubber sample in water, for avoiding specimen surface in water to retain gasBubble, puts into industrial alcohol with tweezers clamping rubbery sample and cleans, then clean in distilled water, finally just surveysThe quality of examination rubbery sample in water.
The detection method of shaped air holes rate provided by the invention, utilizes the incompressible characteristic of rubbery sample,The own volume of material before and after processing and forming, be equal in weight, suppose the front pore-free of forming materials, and ignore intoThe weight of air in type posterior spiracle, the density ratio before and after volume ratio and the moulding before and after moulding is inversely proportional to, that is:Like this volume ratio before the moulding for Calculating material shaped air holes rate, after moulding is turnedChange into after moulding, density ratio before moulding, that is:AndDensity of material density available measuring instrument is measured (can be accurate to 0.001g/cm3) fast and accurately, and it is right to utilizeThe density data that forward and backward two degree of moulding are measured, substitution:Calculate rubberThe shaped air holes rate of sample, wherein the mensuration of rubbery sample density uses Archimedes' principle to derive: rubber examinationSample densityAdopt assay balance to measure respectively the aerial quality of rubbery samplemIn airWith the quality m in waterIn water, calculate rubbery sample density, ρWaterRefer to the density of distilled water. With existingHave technology to compare, the detection method of shaped air holes rate provided by the invention, can measure rubber examination by fast quantificationThe porosity after sample moulding, significant to controlling product quality; And due to rubber extensive useIn industrial production and daily life, the method and apparatus of the forming materials porosity should have very wide application modelEnclose.
Detailed description of the invention
For those skilled in the art can understand technical scheme provided by the present invention better, knot belowClosing specific embodiment sets forth.
Embodiment 1
The detection method of the shaped air holes rate that the present embodiment provides, comprises the steps:
(1), using formula:Record respectively at twice rubbery sample in airWith the density that calculates rubbery sample after quality in water, mIn airRepresent that rubbery sample measures in airQuality, mIn waterRepresent the quality that rubbery sample is measured in water;
(2), survey after the rubbery sample density before finishing type, after moulding, by formula:Calculate the shaped air holes rate of rubbery sample, ρBefore mouldingRepresent the density before rubbery sample moulding, ρAfter mouldingRepresentativeDensity after rubbery sample moulding.
For rubbery sample, the density before moulding: by the density after rubbery sample sulfuration before moulding, orThe density data recording when with batch rubbery sample control finished composition quality, or with this kind of rubbery sampleStandard density; Density after moulding: the density that on the rubbery sample after moulding, sampling records.
In step (1), when the quality of testing rubber sample in water, water used need be distilled water; AndIn standard test room temperature, test, standard test room temperature is 27 DEG C ± 2 DEG C, and testing rubber sample needsReach following condition:
Sampling requirement: each rubbery sample quality is at least 1 gram, and rubbery sample surfacing, smooth,Without greasy dirt, without bubble and free from admixture;
Temperature regulates: the rubbery sample doing before moulding and after moulding all should be lowered joint in standard test room temperatureMore than 30 minutes, or regulate more than 5 minutes in laboratory standard temperature tank;
Sample cleans: when the weight of testing rubber sample in water, for avoiding rubbery sample surface in water to depositStay bubble, put into industrial alcohol with tweezers clamping rubbery sample and clean, then clean in distilled water, lastThe just quality of testing rubber sample in water.
It should be noted that, the distilled water using in the detection method of the shaped air holes rate that the present embodiment provides alsoCan substitute with the liquid of other known densities, can realize equally object of the present invention, be also to belong to thisIn bright protection domain, do not repeat them here.
Embodiment 2
The detection method of the shaped air holes rate that the present embodiment provides, comprises the steps:
(1), using formula:Record respectively at twice rubbery sample in airWith the density that calculates rubbery sample after quality in water, mIn airRepresent that rubbery sample measures in airQuality, mIn waterRepresent the quality that rubbery sample is measured in water;
(2), survey after the rubbery sample density before finishing type, after moulding, by formula:Calculate the shaped air holes rate of rubbery sample, ρBefore mouldingRepresent the density before rubbery sample moulding, ρAfter mouldingRepresentativeDensity after rubbery sample moulding.
In step (1), when the quality of testing rubber sample in water, water used need be distilled water; AndIn standard test room temperature, test, standard test room temperature is 23 DEG C ± 2 DEG C, and testing rubber sample needsReach following condition:
Sampling requirement: each rubbery sample quality is at least 1 gram, and rubbery sample surfacing, smooth,Without greasy dirt, without bubble and free from admixture;
Temperature regulates: the rubbery sample doing before moulding and after moulding all should be lowered joint in standard test room temperatureMore than 30 minutes, or regulate more than 5 minutes in laboratory standard temperature tank;
Sample cleans: when the weight of testing rubber sample in water, for avoiding rubbery sample surface in water to depositStay bubble, put into industrial alcohol with tweezers clamping rubbery sample and clean, then clean in distilled water, lastThe just quality of testing rubber sample in water.
It should be noted that, the distilled water using in the detection method of the shaped air holes rate that the present embodiment provides alsoCan substitute with the liquid of other known densities, can realize equally object of the present invention, be also to belong to thisIn bright protection domain, do not repeat them here.
Compared with prior art, the detection method of shaped air holes rate provided by the invention, can survey by fast quantificationGo out the porosity after elastomeric material moulding, significant to controlling product quality; And due to rubberBe widely used in industrial production and daily life, the method and apparatus of the forming materials porosity should have very wideRange of application.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use thisInvention. To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can be in the situation that not departing from the spirit or scope of the present invention,In other embodiment, realize. Therefore, the present invention will can not be restricted to these embodiment shown in this article, andTo meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (4)
1. a detection method for shaped air holes rate, is characterized in that, comprises the steps:
(1), using formula:Record respectively at twice rubbery sample in airWith the density that calculates rubbery sample after quality in water, mIn airRepresent that rubbery sample measures in airQuality, mIn waterRepresent the quality that rubbery sample is measured in water, ρ represents the density of rubbery sample, ρWaterRepresent the density of water;
(2), survey after the rubbery sample density before finishing type, after moulding, by formula:Calculate the shaped air holes rate of rubbery sample, P represents the shaped air holes rate of rubbery sample, ρBefore mouldingRepresent rubberDensity before the moulding of glue sample, ρAfter mouldingRepresent the density after rubbery sample moulding.
2. the detection method of shaped air holes rate according to claim 1, is characterized in that, step (2)In, for rubbery sample, the density before moulding: by the density after rubbery sample sulfuration before moulding, orThe density data recording when with batch rubbery sample control finished composition quality, or with this kind of rubbery sampleStandard density; Density after moulding: the density that on the rubber after moulding, sampling records.
3. the detection method of shaped air holes rate according to claim 1, is characterized in that, step (1)In, when the quality of testing rubber sample in water, water used need be distilled water; And in standard test room temperatureIn test.
4. the detection method of shaped air holes rate according to claim 3, is characterized in that, step (1)In, testing rubber sample need to reach following condition:
Sampling requirement: each rubbery sample quality is at least 1 gram, and rubbery sample surfacing, smooth,Without greasy dirt, without bubble and free from admixture;
Temperature regulates: the rubbery sample doing before moulding and after moulding all should be lowered joint in standard test room temperatureMore than 30 minutes, or regulate more than 5 minutes in laboratory standard temperature tank;
Rubbery sample cleans: when the weight of testing rubber sample in water, for avoiding rubbery sample table in waterFace retains bubble, and put into industrial alcohol with tweezers clamping rubbery sample and clean, then clean in distilled water,The last just quality of testing rubber sample in water.
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| CN104458495B (en) * | 2014-11-28 | 2017-01-18 | 中国科学院金属研究所 | Method for measuring particle volume fraction of reinforced body in particle-reinforced metal-based composite material |
| CN109655491B (en) * | 2019-01-15 | 2021-04-30 | 安徽奥特佳科技发展有限公司 | Method for detecting overall quality of defects of air holes and shrinkage cavities of aluminum alloy die castings |
| CN113405963A (en) * | 2020-03-17 | 2021-09-17 | 中策橡胶集团有限公司 | Method for measuring porosity of tread product |
| CN112924328A (en) * | 2021-01-26 | 2021-06-08 | 特拓(青岛)轮胎技术有限公司 | Online testing method for density ratio of rubber part based on section online scanning and automatic weighing technology |
| CN113155703B (en) * | 2021-04-28 | 2022-05-31 | 特拓(青岛)轮胎技术有限公司 | Method for testing porosity of rubber |
Citations (3)
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| CN2807247Y (en) * | 2005-05-23 | 2006-08-16 | 吉林大学 | Density measuring apparatus for solid body |
| JP4631686B2 (en) * | 2005-12-08 | 2011-02-16 | 株式会社島津製作所 | Electronic balance |
| CN102213666A (en) * | 2010-04-13 | 2011-10-12 | 万丰奥特控股集团有限公司 | High-precision portable density measuring system and method |
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| JP2008180533A (en) * | 2007-01-23 | 2008-08-07 | Shimadzu Corp | Specific gravity measuring kit and specific gravity measuring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2807247Y (en) * | 2005-05-23 | 2006-08-16 | 吉林大学 | Density measuring apparatus for solid body |
| JP4631686B2 (en) * | 2005-12-08 | 2011-02-16 | 株式会社島津製作所 | Electronic balance |
| CN102213666A (en) * | 2010-04-13 | 2011-10-12 | 万丰奥特控股集团有限公司 | High-precision portable density measuring system and method |
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Effective date of registration: 20180619 Address after: 231137 Pioneer Road, gang Ji Town, Changfeng County, Hefei, Anhui Patentee after: Hefei Wanli Tyre Co., Ltd. Address before: 511400 116 East Ring Road, east ring street, Panyu District, Guangzhou, Guangdong. Patentee before: Guangzhou South China Rubber Tyre Co., Ltd. |