CN103149321B - Oxygen index test system - Google Patents
Oxygen index test system Download PDFInfo
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- CN103149321B CN103149321B CN201310058951.XA CN201310058951A CN103149321B CN 103149321 B CN103149321 B CN 103149321B CN 201310058951 A CN201310058951 A CN 201310058951A CN 103149321 B CN103149321 B CN 103149321B
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- oxygen index
- combustion tube
- test system
- oxygen
- index test
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Abstract
The invention discloses an oxygen index test system which comprises a combustion tube, a flow control system and an ignition device, wherein the combustion tube is used for holding materials to be tested; the flow control system is connected with the combustion tube and used for introducing gas to the combustion tube and controlling the oxygen content of the introduced gas; and the ignition device is inserted into the combustion tube and used for igniting the materials to be tested. The oxygen index test system disclosed by the invention has the advantages of high flow control precision, good control of ignition position, simpleness in operation and accurate detection result.
Description
Technical field
The present invention relates to polymolecular field of material technology, and in particular to a kind of oxygen index test system.
Background technology
At present, the flame-retarding characteristic of nonmetal polymeric material generally represents with oxygen index (OI), oxygen index (OI) refers to that the material (test piece) of certain size loads in experimental rig, under prescribed conditions, pass into the mist of oxygen and nitrogen, test piece igniter is lighted, measures and keep minimum oxygen concentration (representing with percentage) as necessary in wax-like sustained combustion.Oxygen index (OI) tester for evaluating the instrument of polymeric material oxygen index (OI).This instrument is widely used in the combustibility of the multiple material such as rubber, plastics.
But current most oxygen index (OI) tester all exists, and instrument and equipment is simple and crude, the inaccurate shortcoming of means of testing inaccuracy, test result.The test error wherein caused due to flow control system and igniter occupies the overwhelming majority.
Summary of the invention
In view of this, the present invention is intended to solve in prior art, and oxygen index (OI) tester flow control system inaccuracy, igniter be the technical problem such as simple shortcoming too.
The invention provides a kind of oxygen index test system, comprising: combustion tube, to hold detected materials; Flow control system, is connected with described combustion tube, passes into gas to described combustion tube, and controls the oxygen content passing into gas; Igniter, inserts in described combustion tube, in order to light described detected materials.
Further, described flow control system comprises: nitrogen, oxygen bottle, and it has Pressure gauge, pressure-reducing valve; Spinner flowmeter, is connected with described nitrogen, oxygen bottle; Control unit, is connected with described spinner flowmeter.
Further, the top of described combustion tube has aperture, inserts for described igniter; Its inside is provided with specimen holder, for fixing detected materials; There is the cotton layer of lime, for the dropping of splendid attire burning detected materials bottom it.
Further, described combustion tube length is greater than 40cm.
Further, described igniter comprises: gas source bottle, air flow regulator and nozzle, and wherein, described air flow regulator is connected with described gas source bottle; Described nozzle is connected with described air flow regulator.
Further, described nozzle length is 30 ~ 40cm, and diameter is 1 ~ 3mm.
In sum, oxygen index test system provided by the invention, has that flow control accuracy is high, ignition location is controlled well, simple to operate, testing result advantage accurately.The combustibility of the present invention also by regulating the length of igniter nozzle to meet various different length sample detects demand, avoids the drawback of the detection difficult brought less because of sample size; Also can regulate flame size by the air flow regulator of igniter, to avoid being burnt by the arris of batten when lighting a fire, impact detects the reliability of data; And this igniter is changed, and source of the gas is convenient, safety durable.
Accompanying drawing explanation
Figure 1 shows that the structural representation of the oxygen index test system that one embodiment of the invention provides;
Figure 2 shows that the structural representation of igniter in the oxygen index test system that one embodiment of the invention provides.
Detailed description of the invention
For making object of the present invention, feature becomes apparent, and is further described the specific embodiment of the present invention below in conjunction with accompanying drawing.
Refer to Fig. 1, it is depicted as the structural representation of the oxygen index test system that one embodiment of the invention provides.
This oxygen index test system, comprising: combustion tube 100, to hold detected materials; Flow control system 200, is connected with described combustion tube 100, passes into gas to described combustion tube, and controls the oxygen content passing into gas; Igniter 300, inserts in described combustion tube 100, in order to light described detected materials.
In embodiments of the present invention, described flow control system 200 comprises: nitrogen, oxygen bottle 210, and it has Pressure gauge, pressure-reducing valve; Spinner flowmeter 220, is connected with described nitrogen, oxygen bottle 210; Control unit 230, is connected with described spinner flowmeter 220.In the present embodiment, accurately controlled the flow of oxygen and nitrogen by spinner flowmeter 220, to can be as accurate as after decimal point the 3rd, improve the accuracy of detection.
In embodiments of the present invention, the top of described combustion tube 100 has aperture 110, inserts for described igniter 300; Its inside is provided with specimen holder 120, as U-shaped folder, for fixing detected materials; There is the cotton layer 130 of lime, for the dropping of splendid attire burning detected materials bottom it.
In embodiments of the present invention, described combustion tube 100 length is greater than 40cm, even with the oxygen and nitrogen gas concn that ensure the inside.In embodiments of the present invention, whole combustion barrel 100 is connected with flow control system 200 and can pulls down from base, is convenient for changing detected materials sample.
In embodiments of the present invention, igniter 300 comprises: gas source bottle 310, air flow regulator 320 and nozzle 330, and wherein, described air flow regulator 320 is connected with described gas source bottle 310; Described nozzle 330 is connected with described air flow regulator 320.
In embodiments of the present invention, described nozzle 330 length is 30 ~ 40cm, and diameter is 1 ~ 3mm.Length is that 30 ~ 40cm can light the different sample of length, and the size of flame controls by nozzle 330, and the diameter of nozzle is 1 ~ 3mm, ensure that the arris of sample can not be lighted.
Below lift specific embodiment, with the particular content of detailed description invention more.
Oxygen index (OI) detection is carried out to the modified polyolefine material an of the unknown, make long 15cm print 5, open oxygen-nitrogen bottle 210 and open pressure-reducing valve, Pressure gauge is made to reach between 8 ~ 10MPa, regulate the spinner flowmeter 220 of oxygen and nitrogen, first according to 25% oxygen and nitrogen flow stablize 1 to 3 minutes.During this period, the air regulating device of igniter 300 is opened, light and regulate flame size.After gas flow is stable, igniter 300 is put in combustion tube 100 and lights starts timing simultaneously, in official hour, sample is from putting out, and its oxygen index (OI) is greater than 25% as seen.Continue to detect after increasing oxygen concentration, owing to using igniter 300 nozzle 330 length in the present invention longer, so can continue after the part that original batten is burnt being deducted to use, finally under the prerequisite only having used 2 samples, just detect that the oxygen index (OI) of sample is 35%.
As can be seen here, the oxygen index test system that the embodiment of the present invention provides be applicable to sample size less when measure accurately: when sample size is less than 3, because igniter cannot regulate, so each batten can only utilize once, 3 times can only be carried out under the prerequisite of 3 sample sizes and detect.Detect under the prerequisite not understanding sample oxygen index (OI) scope, detect the oxygen index (OI) that can accurately not detect sample 3 times.And utilize oxygen index test system of the present invention, because the nozzle of igniter is longer, sample can duplicate detection 4 ~ 5 times, is equivalent to the sample size that improve 4 ~ 5 times, can sample be saved on the one hand, the more important thing is the oxygen index (OI) that can detect sample accurately.
In sum, the oxygen index test system that the embodiment of the present invention provides, has that flow control accuracy is high, ignition location is controlled well, simple to operate, testing result advantage accurately.The combustibility of the present invention also by regulating the length of igniter nozzle to meet various different length sample detects demand, avoids the drawback of the detection difficult brought less because of sample size; Also can regulate flame size by the air flow regulator of igniter, to avoid being burnt by the arris of batten when lighting a fire, impact detects the reliability of data; And this igniter is changed, and source of the gas is convenient, safety durable.
Although the present invention discloses as above with preferred embodiment; so itself and be not used to limit the present invention; have in any art and usually know the knowledgeable; without departing from the spirit and scope of the present invention; when being used for a variety of modifications and variations, therefore protection scope of the present invention is when being as the criterion depending on those as defined in claim.
Claims (5)
1. an oxygen index test system, is characterized in that, comprising:
Combustion tube, to hold detected materials;
Flow control system, is connected with described flow control system, passes into gas to described combustion tube, and controls the oxygen content passing into gas;
Igniter, inserts in described combustion tube, in order to light described detected materials;
Described igniter comprises: gas source bottle, air flow regulator and nozzle, and wherein, described air flow regulator is connected with described gas source bottle; Described nozzle is connected with described air flow regulator.
2. oxygen index test system according to claim 1, is characterized in that, described flow control system comprises:
Nitrogen, oxygen bottle, it has Pressure gauge, pressure-reducing valve;
Spinner flowmeter, is connected with described nitrogen, oxygen bottle;
Control unit, is connected with described spinner flowmeter.
3. oxygen index test system according to claim 1, is characterized in that, the top of described combustion tube has aperture, inserts for described igniter; Its inside is provided with specimen holder, for fixing detected materials; There is the cotton layer of lime, for the dropping of splendid attire burning detected materials bottom it.
4. oxygen index test system according to claim 1, is characterized in that, described combustion tube length is greater than 40cm.
5. oxygen index test system according to claim 1, is characterized in that, described nozzle length is 30 ~ 40cm, and diameter is 1 ~ 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310058951.XA CN103149321B (en) | 2013-02-25 | 2013-02-25 | Oxygen index test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310058951.XA CN103149321B (en) | 2013-02-25 | 2013-02-25 | Oxygen index test system |
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| CN103149321A CN103149321A (en) | 2013-06-12 |
| CN103149321B true CN103149321B (en) | 2015-04-29 |
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| CN201310058951.XA Active CN103149321B (en) | 2013-02-25 | 2013-02-25 | Oxygen index test system |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467065B (en) * | 2015-12-30 | 2017-08-15 | 重庆精榜高分子材料有限公司 | A kind of oxygen index (OI) tester |
| CN106501445B (en) * | 2016-12-24 | 2019-03-05 | 天津达元吉科技有限公司 | A kind of liftable oxygen index (OI) tester |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2415358Y (en) * | 2000-02-04 | 2001-01-17 | 山东省纺织科学研究院 | Automatic oxygen index measurer |
| CN102507851A (en) * | 2011-11-28 | 2012-06-20 | 广东成德电路股份有限公司 | Printed circuit board oxygen index measuring instrument |
| CN102608257A (en) * | 2012-03-02 | 2012-07-25 | 武汉理工大学 | Digital oxygen index tester |
| CN202421157U (en) * | 2012-01-12 | 2012-09-05 | 江苏艾特克阻燃材料有限公司 | Oxygen index tester |
| CN203241395U (en) * | 2013-02-25 | 2013-10-16 | 上海长园电子材料有限公司 | Nonmetal polymer material oxygen index test device |
-
2013
- 2013-02-25 CN CN201310058951.XA patent/CN103149321B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2415358Y (en) * | 2000-02-04 | 2001-01-17 | 山东省纺织科学研究院 | Automatic oxygen index measurer |
| CN102507851A (en) * | 2011-11-28 | 2012-06-20 | 广东成德电路股份有限公司 | Printed circuit board oxygen index measuring instrument |
| CN202421157U (en) * | 2012-01-12 | 2012-09-05 | 江苏艾特克阻燃材料有限公司 | Oxygen index tester |
| CN102608257A (en) * | 2012-03-02 | 2012-07-25 | 武汉理工大学 | Digital oxygen index tester |
| CN203241395U (en) * | 2013-02-25 | 2013-10-16 | 上海长园电子材料有限公司 | Nonmetal polymer material oxygen index test device |
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Address after: 201802 Shanghai City, Jiading District Nanxiang Town Jiahao Road No. 1690 Patentee after: Shanghai Changyuan Electronic Material Co., Ltd. Patentee after: Changyuan electronic (Group) Co., Ltd. Address before: 201802 Shanghai City, Jiading District Nanxiang Town Jiahao Road No. 1690 Patentee before: Shanghai Changyuan Electronic Material Co., Ltd. Patentee before: Shenzhen Changyuan Electronic Material Co., Ltd. |