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Dołączył: 30 Sie 2010
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 Wysłany: Wto 21:49, 30 Lis 2010 Temat postu: rosetta stone sale In situ polymerization process |
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Paraffin in situ polymerization process of microencapsulation
Capsules, must generate the 2oo5, 9 () :8-4 ・ material enriched with the ability of the surface of paraffin droplets. Urea and formaldehyde 【6】 Fu Xian Cai, Chen Wenxia, Yao Physical Chemistry (Fourth Edition) 【M】 ? High condensation products generated with a certain surface activity, and gradually move to equal educational publishing ceremony of the two 1990 * interface,[link widoczny dla zalogowanych], in the aqueous phase further reaction, deposition, the formation of micro-plastic coated paraffin ResearchofpreparationofparaffinmicrocapsuleyinsitupolymerizationMAOHua-jun, YANHua, XIEJia. qing, zHAOGuang-zhe a, CHENShu. 1ian, CHENYong2 (1.PostgraduateManagementCorps, LogisticEngineeringUniversity, Chongqing400016,[link widoczny dla zalogowanych], China; 2.DepartmentofPe ~ ochemistry, LogisticEngineeringUniversity,[link widoczny dla zalogowanych], Chongqing400016, China; 3.DepartmentofChemistry, SichuanUniversityofScience & Engineering,[link widoczny dla zalogowanych], Zigong643000, China) Abstract: Inthisessay, effectsofaidsandtreatmentmethodsonthepreparationofmicrocapsuleswereinvestigated. Theresultshowedthattheaidshadgreateffectsonthesynthesizingmicrocapsules. MicrocapsulesCannotbemadewhenithadbeenaddedwith4.0% surfactantwhileitcouldmakethehighmicroencapsulationratiosifthereis14.4% polyvinylMcoholornoaid. Furthermore, theeffectswhichcausedbytreatmentmethodshouldbeconsidered. Itwasshownthatonlybyusingthehotwater-ethanol-hotpetroleumethercouldremovetheunencapsulatedparaffin. InordertOobtainmicrocapsules, theintermediateshouldhavethecapacitieswhichcouldaccumulateatthesurfacesoftheparaffindroplets. Duringtheprocessofpreparingparaffinmicrocapsules, theintermediate, whichproducedbycondensationreactionbetweenureaandformaldehyde, hadacertainsurfaceactivity,[link widoczny dla zalogowanych], movedtOwardstheinterfacegradually, wentonreactingandaccumulating, thenencapsulatedtheparaffinandproducedmicrocapsulesultimately. Keywords: phasechangematerial; nre8-formaldehyderesin ~ paraffin, treatmentmethod
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