CN102539285B - Weight extrusion method for analyzing molecular weight of 110 methylvinyl silicone rubber - Google Patents
Weight extrusion method for analyzing molecular weight of 110 methylvinyl silicone rubber Download PDFInfo
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- CN102539285B CN102539285B CN201110455828.2A CN201110455828A CN102539285B CN 102539285 B CN102539285 B CN 102539285B CN 201110455828 A CN201110455828 A CN 201110455828A CN 102539285 B CN102539285 B CN 102539285B
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Abstract
The invention relates to a weight extrusion method adopted for analyzing molecular weight of 110 methylvinyl silicone rubber. The method comprises the following steps: firstly testing by adopting a viscometric method and drawing a regression equation; then testing by utilizing a combined device and substituting tested results into the regression equation so as to calculate the molecular weight of the 110 methylvinyl silicone rubber. The method replaces the viscometric method in which an ubbelohde viscosity meter is taken as a meter and methylbenzene is taken as a solvent in the industrial standard for testing; and the testing time is short, the method is simple, and poisonous and harmful substances do not exist.
Description
Technical field
The present invention relates to the method for a kind of analysis 110 methyl vinyl silicone rubber molecular weight, the weight extrusion of especially a kind of analysis 110 methyl vinyl silicone rubber molecular weight.
Background technology
Industry standard HG/T 3312--2000 < < 110 methyl vinyl silicone rubber > > are quoted in national 110 methyl vinyl silicone rubber industry product analyses at present, the analytical approach of molecular weight is the viscosimetry adopting, the method is approximately 5 hours analysis time, time is longer, during analysis with toluene as solvent, the healthy recovery that has produced harm, waste liquid of analyst is discharged to environment and have been brought pollution.
Summary of the invention
The present invention's 110 methyl vinyl silicone rubber molecular weight analyses adopt weight extrusion, replace in rower and take Ubbelohde viscometer as instrument, and the viscosimetry that toluene is solvent is measured.The method test duration is short, and method is simple, without poisonous and harmful substance.
A weight extrusion of analyzing 110 methyl vinyl silicone rubber molecular weight, concrete steps are:
(1) drafting of regression equation: choose 10 batches of samples of 110 methyl vinyl silicone rubber of spacing 20,000, make respectively 4 times of every crowd of 3 technician of viscosimetry, draw one group of standard molecular weight (ten thousand) data; These 10 batches of samples are tested with extrusion test device, 110 methyl vinyl silicone rubbers that pack 12mL scale mark place in plastic injector into, connect piston, be fixed in 25 ± 0.1 ℃ of constant temperature water baths 10 minutes, on piston, accept 800-1000kg standard test weight, now hollow cylinder lower end osculum flows out colloid, treats that colloid arrives level altitude place, 10mL scale mark place and starts to cut off timing, during by 10 minutes, the glue amount of pushing is weighed, retain two-decimal.With the 110 xanthan molecule amount contrasts that analyze by normal viscosity method, the relation between definite molecular weight with this understanding and extruding weight, draws regression equation.
Regression equation is molecular weight=X-Y * extrusion capacity
(2) test of molecular weight: get production line 110 methyl vinyl silicone rubbers, 110 methyl vinyl silicone rubbers that pack 12mL scale mark place in plastic injector into, connect piston, be fixed in 25 ± 0.1 ℃ of constant temperature water baths 10 minutes, on piston, accept 800-1000kg standard test weight, now hollow cylinder lower end osculum flows out colloid, treat that colloid arrives level altitude place, 10mL scale mark place and starts to cut off timing, during by 10 minutes, the glue amount of pushing is weighed, retain two-decimal, substitution regression equation equation, converses the molecular weight of colloid.
The device of weight extrusion weight extrusion of the present invention utilization, for combining, can substitute Ubbelohde viscometer test molecule amount, and method is simple, and the test duration is short, and nonhazardous material meets the needs of production test.
figure of description
Fig. 1 represents to analyze the device of the weight extrusion of 110 methyl vinyl silicone rubber molecular weight.
Reference numeral: 800-1000kg standard test weight 1, syringe piston 2, syringe 3,12ml scale mark 4,10ml scale mark 5, water bath 6, water delivering orifice 7, water inlet 8, plate 9.
Embodiment
Embodiment 1:
A weight extrusion of analyzing 110 methyl vinyl silicone rubber molecular weight, concrete steps are:
(1) drafting of regression equation: choose 10 batches of samples of 110 methyl vinyl silicone rubber of spacing 20,000, make respectively 4 times of every crowd of 3 technician of viscosimetry, draw one group of standard molecular weight (ten thousand) data; These 10 batches of samples are tested with extrusion test device, 110 methyl vinyl silicone rubbers that pack 12mL scale mark place in plastic injector into, connect piston, be fixed in 25 ± 0.1 ℃ of constant temperature water baths 10 minutes, on piston, accept 800-1000kg standard test weight, now hollow cylinder lower end osculum flows out colloid, treats that colloid arrives level altitude place, 10mL scale mark place and starts to cut off timing, during by 10 minutes, the glue amount of pushing is weighed, retain two-decimal.With the 110 xanthan molecule amount contrasts that analyze by normal viscosity method, the relation between definite molecular weight with this understanding and extruding weight, draws regression equation.
Regression equation is molecular weight=X-Y * extrusion capacity
(2) test of molecular weight: get production line 110 methyl vinyl silicone rubbers, 110 methyl vinyl silicone rubbers that pack 12mL scale mark place in plastic injector into, connect piston, be fixed in 25 ± 0.1 ℃ of constant temperature water baths 10 minutes, on piston, accept 800-1000kg standard test weight, now hollow cylinder lower end osculum flows out colloid, treat that colloid arrives level altitude place, 10mL scale mark place and starts to cut off timing, during by 10 minutes, the glue amount of pushing is weighed, retain two-decimal, substitution regression equation equation, converses the molecular weight of colloid.
Embodiment 2:
A weight extrusion of analyzing 110 methyl vinyl silicone rubber molecular weight, concrete steps are:
(1) drafting of regression equation: choose 10 batches of samples of 110 methyl vinyl silicone rubber of spacing 20,000, make respectively 4 times of every crowd of 3 technician of viscosimetry, draw one group of standard molecular weight (ten thousand) data; These 10 batches of samples are tested with extrusion test device, 110 methyl vinyl silicone rubbers that pack 12mL scale mark 4 places in plastic injector 3 into, connect syringe piston 2, be fixed in 25 ± 0.1 ℃ of constant temperature water baths 6 that comprise water delivering orifice 7 and water inlet 8 10 minutes, on syringe piston 2, accept 800-1000kg standard test weight 1, now hollow cylinder lower end osculum flows out colloid, treat that colloid arrives 10mL scale mark 5 level altitude places, place and starts to cut off timing, during by 10 minutes, the glue amount of coming on plate 9 under extruding is weighed, retain two-decimal.With the 110 xanthan molecule amount contrasts that analyze by normal viscosity method, the relation between definite molecular weight with this understanding and extruding weight, draws regression equation.
Regression equation is molecular weight=X-Y * extrusion capacity
(2) test of molecular weight: get production line 110 methyl vinyl silicone rubbers, 110 methyl vinyl silicone rubbers that pack 12mL scale mark 4 places in plastic injector 3 into, connect syringe piston 2, be fixed in 25 ± 0.1 ℃ of constant temperature water baths 6 that comprise water delivering orifice 7 and water inlet 8 10 minutes, on syringe piston 2, accept 800-1000kg standard test weight 1, now hollow cylinder lower end osculum flows out colloid, treat that colloid arrives 10mL scale mark 5 level altitude places, place and starts to cut off timing, during by 10 minutes, coming plate 9 spreads under extruding, weigh, retain two-decimal, substitution regression equation equation, converse the molecular weight of colloid.
Embodiment 3:
A weight extrusion operation method of analyzing 110 methyl vinyl silicone rubber molecular weight, concrete steps are:
10 batch of 110 methyl vinyl silicone rubber tested with extrusion test device, 110 methyl vinyl silicone rubbers that pack 12mL scale mark place in plastic injector into, connect piston, be fixed in 25 ± 0.1 ℃ of constant temperature water baths 10 minutes, on piston, accept 800-1000kg standard test weight, now hollow cylinder lower end osculum flows out colloid, treats that colloid arrives level altitude place, 10mL scale mark place and starts to cut off timing, during by 10 minutes, the glue amount of pushing is weighed, retain two-decimal; With the 110 xanthan molecule amount contrasts that analyze by normal viscosity method, the relation between definite molecular weight with this understanding and extruding weight, draws regression equation; Separately get production line 110 methyl vinyl silicone rubbers, 110 methyl vinyl silicone rubbers that pack 12mL scale mark place in plastic injector into, connect piston, be fixed in 25 ± 0.1 ℃ of constant temperature water baths 10 minutes, on piston, accept 800-1000kg standard test weight, now hollow cylinder lower end osculum flows out colloid, treat that colloid arrives level altitude place, 10mL scale mark place and starts to cut off timing, during by 10 minutes, the glue amount of pushing is weighed, retain two-decimal, substitution regression equation equation, converses the molecular weight of colloid.
Claims (2)
1. analyze a weight extrusion for 110 methyl vinyl silicone rubber molecular weight, it is characterized by:
(1) drafting of regression equation: choose 10 batches of samples of 110 methyl vinyl silicone rubber of spacing 20,000, make respectively 4 times of every crowd of 3 technician of normal viscosity method, draw one group of standard molecular weight data, ten thousand; These 10 batches of samples are tested with extrusion test device, 110 methyl vinyl silicone rubbers that pack 12mL scale mark place in plastic injector into, connect piston, be fixed in 25 ± 0.1 ℃ of constant temperature water baths 10 minutes, on piston, accept 800-1000kg standard test weight, now plastic injector lower end osculum flows out colloid, treats that the level altitude place of colloid arrival 10mL scale mark starts to cut off timing, during by 10 minutes, the glue amount of pushing is weighed, retain two-decimal; With the standard molecular weight contrast analyzing by normal viscosity method, the relation between definite molecular weight with this understanding and extruding weight, draws regression equation;
Regression equation is molecular weight=X-Y * extrusion capacity
(2) test of molecular weight: get production line 110 methyl vinyl silicone rubbers, 110 methyl vinyl silicone rubbers that pack 12mL scale mark place in plastic injector into, connect piston, be fixed in 25 ± 0.1 ℃ of constant temperature water baths 10 minutes, on piston, accept 800-1000kg standard test weight, now hollow cylinder lower end osculum flows out colloid, the level altitude place that treats colloid arrival 10mL scale mark starts to cut off timing, during by 10 minutes, the glue amount of pushing is weighed, retain two-decimal, substitution regression equation, converses the molecular weight of colloid.
2. the weight extrusion of a kind of analysis 110 methyl vinyl silicone rubber molecular weight as claimed in claim 1, is characterized by:
(1) drafting of regression equation: choose 10 batches of samples of 110 methyl vinyl silicone rubber of spacing 20,000, make respectively 4 times of every crowd of 3 technician of normal viscosity method, draw one group of standard molecular weight data, ten thousand, these 10 batches of samples are tested with extrusion test device, in plastic injector (3), pack 110 methyl vinyl silicone rubbers that 12mL scale mark (4) is located into, connect syringe piston (2), be fixed in 25 ± 0.1 ℃ of constant temperature water baths (6) that comprise water delivering orifice (7) and water inlet (8) 10 minutes, on syringe piston (2), accept 800-1000kg standard test weight (1), now plastic injector lower end osculum flows out colloid, the level altitude place that treats colloid arrival 10mL scale mark (5) starts to cut off timing, during by 10 minutes, the glue amount of coming on plate (9) under extruding is weighed, retain two-decimal, with the standard molecular weight contrast analyzing by normal viscosity method, the relation between definite molecular weight with this understanding and extruding weight, draws regression equation,
Regression equation is molecular weight=X-Y * extrusion capacity
(2) test of molecular weight: get production line 110 methyl vinyl silicone rubbers, in plastic injector (3), pack 110 methyl vinyl silicone rubbers that 12mL scale mark (4) is located into, connect syringe piston (2), be fixed in 25 ± 0.1 ℃ of constant temperature water baths (6) that comprise water delivering orifice (7) and water inlet (8) 10 minutes, on syringe piston (2), accept 800-1000kg standard test weight (1), now hollow cylinder lower end osculum flows out colloid, the level altitude place that treats colloid arrival 10mL scale mark (5) starts to cut off timing, during by 10 minutes, coming plate (9) spread under extruding, weigh, retain two-decimal, substitution regression equation, converse the molecular weight of colloid.
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| CN201110455828.2A CN102539285B (en) | 2011-12-31 | 2011-12-31 | Weight extrusion method for analyzing molecular weight of 110 methylvinyl silicone rubber |
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| CN201110455828.2A CN102539285B (en) | 2011-12-31 | 2011-12-31 | Weight extrusion method for analyzing molecular weight of 110 methylvinyl silicone rubber |
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| CN102539285B true CN102539285B (en) | 2014-08-27 |
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| CN109540740A (en) * | 2018-12-04 | 2019-03-29 | 江西蓝星星火有机硅有限公司 | A kind of needle penetration fitting detection method of Molecular Weight of Silicone Rubber |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85102485A (en) * | 1985-04-01 | 1986-07-16 | 成都科技大学 | Automatic device of macromolecular weight determining by viscosimetric method |
| CN1627065A (en) * | 2003-12-08 | 2005-06-15 | 罗姆和哈斯公司 | Device for determining polymer molecular weight |
| CN1648647A (en) * | 2004-01-19 | 2005-08-03 | 中国石油化工股份有限公司 | Method for measuring polyisobutene molecular weight |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85102485A (en) * | 1985-04-01 | 1986-07-16 | 成都科技大学 | Automatic device of macromolecular weight determining by viscosimetric method |
| CN1627065A (en) * | 2003-12-08 | 2005-06-15 | 罗姆和哈斯公司 | Device for determining polymer molecular weight |
| CN1648647A (en) * | 2004-01-19 | 2005-08-03 | 中国石油化工股份有限公司 | Method for measuring polyisobutene molecular weight |
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Address after: 330300 Yangjialing, Yongxiu County, Jiujiang City, Jiangxi Province Patentee after: JIANGXI BLUESTAR XINGHUO ORGANIC SILICONE Co.,Ltd. Address before: 330319 Spark Industrial Park, Yongxiu County, Jiujiang City, Jiangxi Province Patentee before: Jiangxi Star-Fire Silicone Factory of Bluestar New Chemical Materials Co.,Ltd. |
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