How much do you know about sheet material? -- report on the training course of basic knowledge of sheet materials
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(Summary description)Basicknowledgeofsheetmaterialstrainingcoursereport一 Inordertofurtherdeepenjinbangemployees'understandingofsheetmaterialknowledge,onJanuary9,2019,lichangfen,directoroftechnicalqualitydepartment,gaveatrainingclassonsheetmaterialknowledge. Ontheclass,lichangfenlecturerelaboratedpolyvinylchloride(PVC)sheetcomposition,processprinciple,use,auxiliaryagentintroductionandsoon.Atthesametime,thecommonproblemsofsheetmaterialsareillustrated,andthecorrespondingsolutionsareintroduced.Speaker:directoroftechnicalqualitydepartment--lichangfenAfterclass,studentsactivelyputforwardtheirownquestions,lichangfenlecturerwithhisprofessionalknowledgeforthestudentstoanswertheirdoubts.Ibelievethatthroughthistrainingcourse,everyonewillhaveamoreprofoundunderstandingofsheetmaterialknowledge.Knowledgeencyclopedia Polyvinylchloride(Polyvinylchloridechloride)isaninitiatorofthevinylchloridechloridemonomer(VCM)inperoxides,azocompounds,etc.Orundertheactionoflight,heat,accordingtothefreeradicalpolymerizationreactionmechanismpolymerizationandbecomeapolymer.❖PVC结构 PVCforamorphousstructureofwhitepowder,brancheddegreeissmall,relativedensity1.4,glasstransitiontemperatureof77~90℃,170℃orsobegantodecompose,poorstabilitytoheatandlight,inmorethan100℃orthesunforalongtime,willdecomposeandproducehydrogenchloride,andfurtherautomaticcatalyticdecomposition,causediscoloration,physicalandmechanicalpropertiesalsofellrapidly,mustbeaddedinthepracticalapplicationofstabilizersinordertoimprovethestabilityofheatandlight. ThemolecularweightofPVCproducedbyindustryisgenerallywithintherangeof50,000~110,000,andithasarelativelylargepolydispersity.Themolecularweightincreaseswiththedecreaseofpolymerizationtemperature.Withoutfixedmeltingpoint,itbegantosoftenat80~85℃,becameviscoelasticat130℃,andbecameviscousat160~180℃.Goodmechanicalproperties,tensilestrengthofabout60MPa,impactstrengthof5~10kJ/m2;Excellentdielectricproperties.PVCusedtobetheworld'slargestproductionofgeneralplastic,theapplicationisverywide.Inbuildingmaterials,industrialproducts,dailynecessities,floorleather,floortile,artificialleather,pipe,wireandcable,packagingfilm,bottle,foammaterials,sealingmaterials,fiberandotheraspectsarewidelyused.
How much do you know about sheet material? -- report on the training course of basic knowledge of sheet materials
(Summary description)Basicknowledgeofsheetmaterialstrainingcoursereport一 Inordertofurtherdeepenjinbangemployees'understandingofsheetmaterialknowledge,onJanuary9,2019,lichangfen,directoroftechnicalqualitydepartment,gaveatrainingclassonsheetmaterialknowledge. Ontheclass,lichangfenlecturerelaboratedpolyvinylchloride(PVC)sheetcomposition,processprinciple,use,auxiliaryagentintroductionandsoon.Atthesametime,thecommonproblemsofsheetmaterialsareillustrated,andthecorrespondingsolutionsareintroduced.Speaker:directoroftechnicalqualitydepartment--lichangfenAfterclass,studentsactivelyputforwardtheirownquestions,lichangfenlecturerwithhisprofessionalknowledgeforthestudentstoanswertheirdoubts.Ibelievethatthroughthistrainingcourse,everyonewillhaveamoreprofoundunderstandingofsheetmaterialknowledge.Knowledgeencyclopedia Polyvinylchloride(Polyvinylchloridechloride)isaninitiatorofthevinylchloridechloridemonomer(VCM)inperoxides,azocompounds,etc.Orundertheactionoflight,heat,accordingtothefreeradicalpolymerizationreactionmechanismpolymerizationandbecomeapolymer.❖PVC结构 PVCforamorphousstructureofwhitepowder,brancheddegreeissmall,relativedensity1.4,glasstransitiontemperatureof77~90℃,170℃orsobegantodecompose,poorstabilitytoheatandlight,inmorethan100℃orthesunforalongtime,willdecomposeandproducehydrogenchloride,andfurtherautomaticcatalyticdecomposition,causediscoloration,physicalandmechanicalpropertiesalsofellrapidly,mustbeaddedinthepracticalapplicationofstabilizersinordertoimprovethestabilityofheatandlight. ThemolecularweightofPVCproducedbyindustryisgenerallywithintherangeof50,000~110,000,andithasarelativelylargepolydispersity.Themolecularweightincreaseswiththedecreaseofpolymerizationtemperature.Withoutfixedmeltingpoint,itbegantosoftenat80~85℃,becameviscoelasticat130℃,andbecameviscousat160~180℃.Goodmechanicalproperties,tensilestrengthofabout60MPa,impactstrengthof5~10kJ/m2;Excellentdielectricproperties.PVCusedtobetheworld'slargestproductionofgeneralplastic,theapplicationisverywide.Inbuildingmaterials,industrialproducts,dailynecessities,floorleather,floortile,artificialleather,pipe,wireandcable,packagingfilm,bottle,foammaterials,sealingmaterials,fiberandotheraspectsarewidelyused.
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- Time of issue:2019-01-15 14:29
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Basic knowledge of sheet materials training course report
一
In order to further deepen jinbang employees' understanding of sheet material knowledge, on January 9, 2019, li changfen, director of technical quality department, gave a training class on sheet material knowledge.
On the class, li changfen lecturer elaborated polyvinyl chloride (PVC) sheet composition, process principle, use, auxiliary agent introduction and so on. At the same time, the common problems of sheet materials are illustrated, and the corresponding solutions are introduced.
Speaker: director of technical quality department -- li changfen
After class, students actively put forward their own questions, li changfen lecturer with his professional knowledge for the students to answer their doubts. I believe that through this training course, everyone will have a more profound understanding of sheet material knowledge.
Polyvinyl chloride (Polyvinyl chloride chloride) is an initiator of the vinyl chloride chloride monomer (VCM) in peroxides, azo compounds, etc. Or under the action of light, heat, according to the free radical polymerization reaction mechanism polymerization and become a polymer.
❖PVC结构
PVC for amorphous structure of white powder, branched degree is small, relative density 1.4, glass transition temperature of 77 ~ 90 ℃, 170 ℃ or so began to decompose, poor stability to heat and light, in more than 100 ℃ or the sun for a long time, will decompose and produce hydrogen chloride, and further automatic catalytic decomposition, cause discoloration, physical and mechanical properties also fell rapidly, must be added in the practical application of stabilizers in order to improve the stability of heat and light.
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