CN102539285A - 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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- CN102539285A CN102539285A CN2011104558282A CN201110455828A CN102539285A CN 102539285 A CN102539285 A CN 102539285A CN 2011104558282 A CN2011104558282 A CN 2011104558282A CN 201110455828 A CN201110455828 A CN 201110455828A CN 102539285 A CN102539285 A CN 102539285A
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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 a kind of method of analysis 110 methyl vinyl silicone rubber molecular weight, especially a kind of weight extrusion of analysis 110 methyl vinyl silicone rubber molecular weight.
Background technology
Industry standard HG/T 3312--2000 " 110 methyl vinyl silicone rubber " is quoted in national 110 methyl vinyl silicone rubber industry product analyses at present; The analytical approach of molecular weight is the viscosimetry that adopts; 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 discharged to environment brought pollution.
Summary of the invention
The present invention's 110 methyl vinyl silicone rubber molecular weight analyses adopt the weight extrusion, and replacing in the rower with the Ubbelohde viscometer is instrument, and toluene is that the viscosimetry of solvent is measured.The method test duration is short, and method is simple, no poisonous and harmful substance.
A kind of weight extrusion of analysis 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 rubbers of spacing 20,000, make respectively 4 times, draw one group of standard molecular weight (ten thousand) data of every crowd of 3 technician of viscosimetry; These 10 batches of samples are tested with extrusion test device, and 110 methyl vinyl silicone rubbers at the 12mL scale mark place of packing in the plastic injector connect piston; Be fixed in 25 ± 0.1 ℃ of constant temperature water baths 10 minutes; Accept the 800-1000kg standard test weight on the piston, this moment, hollow cylinder lower end osculum flowed out colloid, treated that colloid arrives level altitude place, 10mL scale mark place and begins to cut off timing; During by 10 minutes weigh the glue amount of pushing, keep two-decimal.With the 110 xanthan molecule amounts contrast that analyzes by the normal viscosity method, the relation between definite molecular weight with this understanding and the 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 at the 12mL scale mark place of packing in the plastic injector connect piston; Be fixed in 25 ± 0.1 ℃ of constant temperature water baths 10 minutes; Accept the 800-1000kg standard test weight on the piston, this moment, hollow cylinder lower end osculum flowed out colloid, treated that colloid arrives level altitude place, 10mL scale mark place and begins to cut off timing; During by 10 minutes weigh the glue amount of pushing; Keep two-decimal, substitution regression equation equation converses the molecular weight of colloid.
The device of weight extrusion weight extrusion of the present invention utilization can substitute Ubbelohde viscometer test molecule amount for combining, and method is simple, and the test duration is short, and the nonhazardous material satisfies the needs of production test.
Figure of description
Fig. 1 representes 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 kind of weight extrusion of analysis 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 rubbers of spacing 20,000, make respectively 4 times, draw one group of standard molecular weight (ten thousand) data of every crowd of 3 technician of viscosimetry; These 10 batches of samples are tested with extrusion test device, and 110 methyl vinyl silicone rubbers at the 12mL scale mark place of packing in the plastic injector connect piston; Be fixed in 25 ± 0.1 ℃ of constant temperature water baths 10 minutes; Accept the 800-1000kg standard test weight on the piston, this moment, hollow cylinder lower end osculum flowed out colloid, treated that colloid arrives level altitude place, 10mL scale mark place and begins to cut off timing; During by 10 minutes weigh the glue amount of pushing, keep two-decimal.With the 110 xanthan molecule amounts contrast that analyzes by the normal viscosity method, the relation between definite molecular weight with this understanding and the 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 at the 12mL scale mark place of packing in the plastic injector connect piston; Be fixed in 25 ± 0.1 ℃ of constant temperature water baths 10 minutes; Accept the 800-1000kg standard test weight on the piston, this moment, hollow cylinder lower end osculum flowed out colloid, treated that colloid arrives level altitude place, 10mL scale mark place and begins to cut off timing; During by 10 minutes weigh the glue amount of pushing; Keep two-decimal, substitution regression equation equation converses the molecular weight of colloid.
Embodiment 2:
A kind of weight extrusion of analysis 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 rubbers of spacing 20,000, make respectively 4 times, draw one group of standard molecular weight (ten thousand) data of every crowd of 3 technician of viscosimetry; These 10 batches of samples are tested with extrusion test device; Pack in the plastic injector 3 110 methyl vinyl silicone rubbers at 12mL scale mark 4 places; 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, accept 800-1000kg standard test weight 1 on the syringe piston 2; This moment, hollow cylinder lower end osculum flowed out colloid; Treat that colloid arrives level altitude place, 10mL scale mark 5 place and begins to cut off timing, the glue amount of coming extruding on the plate 9 down during by 10 minutes is weighed, and keeps two-decimal.With the 110 xanthan molecule amounts contrast that analyzes by the normal viscosity method, the relation between definite molecular weight with this understanding and the 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 at 12mL scale mark 4 places of packing in the plastic injector 3 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; Accept 800-1000kg standard test weight 1 on the syringe piston 2, this moment, hollow cylinder lower end osculum flowed out colloid, treated that colloid arrives level altitude place, 10mL scale mark 5 place and begins to cut off timing; Weigh coming plate 9 spreads under the extruding during by 10 minutes; Keep two-decimal, substitution regression equation equation converses the molecular weight of colloid.
Embodiment 3:
A kind of weight extrusion operation method of analysis 110 methyl vinyl silicone rubber molecular weight, concrete steps are:
10 batch of 110 methyl vinyl silicone rubber tested with extrusion test device, and 110 methyl vinyl silicone rubbers at the 12mL scale mark place of packing in the plastic injector connect piston; Be fixed in 25 ± 0.1 ℃ of constant temperature water baths 10 minutes; Accept the 800-1000kg standard test weight on the piston, this moment, hollow cylinder lower end osculum flowed out colloid, treated that colloid arrives level altitude place, 10mL scale mark place and begins to cut off timing; During by 10 minutes weigh the glue amount of pushing, keep two-decimal; With the 110 xanthan molecule amounts contrast that analyzes by the normal viscosity method, the relation between definite molecular weight with this understanding and the extruding weight draws regression equation; Other gets production line 110 methyl vinyl silicone rubbers, and 110 methyl vinyl silicone rubbers at the 12mL scale mark place of packing in the plastic injector connect piston; Be fixed in 25 ± 0.1 ℃ of constant temperature water baths 10 minutes; Accept the 800-1000kg standard test weight on the piston, this moment, hollow cylinder lower end osculum flowed out colloid, treated that colloid arrives level altitude place, 10mL scale mark place and begins to cut off timing; During by 10 minutes weigh the glue amount of pushing; Keep two-decimal, substitution regression equation equation converses the molecular weight of colloid.
Claims (3)
1. weight extrusion of analyzing 110 methyl vinyl silicone rubber molecular weight is characterized by:
(1) drafting of regression equation: choose 10 batches of samples of 110 methyl vinyl silicone rubbers of spacing nearly 20,000, make respectively 4 times, draw one group of standard molecular weight (ten thousand) data of every crowd of 3 technician of viscosimetry; These 10 batches of samples are tested with extrusion test device, and 110 methyl vinyl silicone rubbers at the 12mL scale mark place of packing in the plastic injector connect piston; Be fixed in 25 ± 0.1 ℃ of constant temperature water baths 10 minutes; Accept the 800-1000kg standard test weight on the piston, this moment, hollow cylinder lower end osculum flowed out colloid, treated that colloid arrives level altitude place, 10mL scale mark place and begins to cut off timing; During by 10 minutes weigh the glue amount of pushing, keep two-decimal; With the 110 xanthan molecule amounts contrast that analyzes by the normal viscosity method, the relation between definite molecular weight with this understanding and the 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 at the 12mL scale mark place of packing in the plastic injector connect piston; Be fixed in 25 ± 0.1 ℃ of constant temperature water baths 10 minutes; Accept the 800-1000kg standard test weight on the piston, this moment, hollow cylinder lower end osculum flowed out colloid, treated that colloid arrives level altitude place, 10mL scale mark place and begins to cut off timing; During by 10 minutes weigh the glue amount of pushing; Keep two-decimal, substitution regression equation equation converses the molecular weight of colloid.
2. weight extrusion of analyzing 110 methyl vinyl silicone rubber molecular weight is characterized by:
(1) drafting of regression equation: choose 10 batches of samples of 110 methyl vinyl silicone rubbers of spacing 20,000, make respectively 4 times, draw one group of standard molecular weight (ten thousand) data of every crowd of 3 technician of viscosimetry; These 10 batches of samples are tested with extrusion test device; 110 methyl vinyl silicone rubbers that the 12mL scale mark (4) of packing in the plastic injector (3) is located; 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, accept 800-1000kg standard test weight (1) on the syringe piston (2); This moment, hollow cylinder lower end osculum flowed out colloid; Treat that colloid arrives 10mL scale mark (5) and locates the level altitude place and begin to cut off timing, the glue amount of coming extruding on the plate (9) down during by 10 minutes is weighed, and keeps two-decimal; With the 110 xanthan molecule amounts contrast that analyzes by the normal viscosity method, the relation between definite molecular weight with this understanding and the 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 the 12mL scale mark (4) of packing in the plastic injector (3) is located; 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, accept 800-1000kg standard test weight (1) on the syringe piston (2); This moment, hollow cylinder lower end osculum flowed out colloid; Treat that colloid arrives 10mL scale mark (5) and locates the level altitude place and begin to cut off timing, come plate (9) spread to extruding down during by 10 minutes and weigh, the reservation two-decimal; Substitution regression equation equation converses the molecular weight of colloid.
3. weight extrusion operation method of analyzing 110 methyl vinyl silicone rubber molecular weight is characterized by:
10 batch of 110 methyl vinyl silicone rubber tested with extrusion test device, and 110 methyl vinyl silicone rubbers at the 12mL scale mark place of packing in the plastic injector connect piston; Be fixed in 25 ± 0.1 ℃ of constant temperature water baths 10 minutes; Accept the 800-1000kg standard test weight on the piston, this moment, hollow cylinder lower end osculum flowed out colloid, treated that colloid arrives level altitude place, 10mL scale mark place and begins to cut off timing; During by 10 minutes weigh the glue amount of pushing, keep two-decimal; With the 110 xanthan molecule amounts contrast that analyzes by the normal viscosity method, the relation between definite molecular weight with this understanding and the extruding weight draws regression equation; Other gets production line 110 methyl vinyl silicone rubbers, and 110 methyl vinyl silicone rubbers at the 12mL scale mark place of packing in the plastic injector connect piston; Be fixed in 25 ± 0.1 ℃ of constant temperature water baths 10 minutes; Accept the 800-1000kg standard test weight on the piston, this moment, hollow cylinder lower end osculum flowed out colloid, treated that colloid arrives level altitude place, 10mL scale mark place and begins to cut off timing; During by 10 minutes weigh the glue amount of pushing; Keep two-decimal, substitution regression equation equation converses the molecular weight of colloid.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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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. |