Diacetone Acrylamide (DAAM) yog ntau yam monomer siv ntau yam txheej txheem polymerization los tsim cov resins, coatings, adhesives, thiab lwm yam ntaub ntawv uas yuav tsum tau txhim kho thermal stability, dej tsis kam, thiab adhesion zog. DAAM sawv tawm vim nws cov qauv tshuaj tshwj xeeb thiab muaj peev xwm ua rau muaj kev sib txuas sib txuas nrog lwm cov khoom sib txuas, xws li adipic dihydrazide (ADH), ua rau cov khoom siv nrog kev ua tau zoo dua.
Chemical Properties of DAAM
- IUPAC Lub Npe:N-(1,1-Dimethyl-3-oxo-butyl)acrylamide
- Tshuaj Formula:C9H15 NPO 2
- Molecular Luj:169.22 g / mol
- CAS Nr .:2873-97-4 ib
- Qhov tsos:Dawb crystalline khoom los yog hmoov
- Solubility:Soluble nyob rau hauv dej, ethanol, thiab lwm yam polar solvents
- Melting Point:53 ° C rau 55 ° C
Cov pab pawg tseem ceeb
- Acrylamide Group:Pab txhawb rau polymerizability ntawm cov tshuaj tiv thaiv dawb-radical.
- Ketone Pawg:Muab cov chaw reactive rau kev sib txuas nrog cov tebchaw xws li hydrazines.
Synthesis of DAAM
DAAM yog tsim los ntawm cov tshuaj tiv thaiv ntawm diacetone cawv nrog acrylonitrile, ua raws li catalytic hydrogenation lossis hydrolysis kauj ruam los qhia cov pab pawg amide. Cov txheej txheem ntau lawm ua kom muaj cov khoom zoo purity haum rau cov ntawv thov kev lag luam.
Cov kauj ruam tseem ceeb:
- Diacetone Cawv + Acrylonitrile → Intermediary Compound
- Hydrogenation lossis Hydrolysis → Diacetone Acrylamide
Applications of DAAM
1. Adhesives
- Role of DAAM:Txhim kho cov khoom sib txuas los ntawm kev txhawb nqa kev sib txuas thiab thermal stability.
- Piv txwv:Siab-rhiab nplaum nplaum nrog txhim kho tev lub zog thiab durability.
2. Cov txheej txheem dej
- Role of DAAM:Ua raws li tus neeg sawv cev ua yeeb yaj kiab uas muab cov dej tsis zoo thiab ua kom yooj yim.
- Piv txwv:Kho kom zoo nkauj thiab muaj xim rau corrosion thiab hnav tsis kam.
3. Textile Finishing Agents
- Role of DAAM:Imparts check xovxwm finishes thiab anti-wrinkle zog.
- Piv txwv:Siv nyob rau hauv tsis-hlau tiav rau fabrics.
4. Hydrogels thiab Biomedical Applications
- Role of DAAM:Pab txhawb rau kev tsim cov biocompatible hydrogels.
- Piv txwv:Tswj cov tshuaj xa tshuaj.
5. Ntawv thiab Ntim
- Role of DAAM:Muab kev txhim kho lub zog thiab noo noo barrier zog.
- Piv txwv:Cov ntawv tshwj xeeb txheej rau ntim khoom noj thiab dej haus.
6. Sealants
- Role of DAAM:Txhim kho qhov yooj yim thiab tsis kam tawg thaum muaj kev ntxhov siab.
- Piv txwv:Silicone-hloov sealants rau kev tsim kho thiab kev siv tsheb.
Qhov zoo ntawm Kev Siv DAAM
- Versatile Cross-Linking Ability:Tsim cov tes hauj lwm muaj zog nrog hydrazide-based cross-linkers zoo li ADH.
- Thermal stability:Ua kom muaj kev ncaj ncees nyob rau hauv qhov kub thiab txias.
- Moisture Resistance:Tsim cov yeeb yaj kiab tiv thaiv dej thiab cov qauv.
- Tsawg toxicity:Muaj kev nyab xeeb dua los siv piv rau qee qhov lwm cov monomers.
- Wide Compatibility:Ua haujlwm nrog ntau yam txheej txheem polymerization, suav nrog emulsion, ncua kev kawm, thiab cov txheej txheem daws.
Compatibility nrog Adipic Dihydrazide (ADH)
Kev sib xyaw ua ke ntawm DAAM nrog ADH yog dav siv hauv kev sib txuas ntawm cov khoom siv polymer. Cov tshuaj tiv thaiv ntawm pawg ketone ntawm DAAM thiab pawg hydrazide hauv ADH ua rau muaj kev sib txuas ntawm hydrazone ruaj khov, ua rau:
- Txhim kho txhua yam muaj zog.
- Superior thermal kuj.
- Kev kho kom haum raws li kev xav tau ntawm formulation.
Reaction Mechanism:
- Kev sib cuam tshuam ntawm Ketone-Hydrazide:DAAM + ADH → Hydrazone Bond
- Daim ntawv thov:Waterborne polyurethane txheej, cov ntaub ntawv kho tus kheej, thiab lwm yam.
Kev Paub Txog Kev Ua Lag Luam thiab Kev Lag Luam
Kev thov thoob ntiaj teb
Kev ua lag luam rau DAAM tau pom qhov kev loj hlob tseem ceeb vim nws nce kev siv hauv eco-friendly, waterborne formulations thiab advanced polymer systems. Kev lag luam xws li tsheb, kev tsim kho, thiab khoom siv hluav taws xob ua rau qhov kev thov rau DAAM-raws li kev daws teeb meem.
Kev tsim kho tshiab
Kev nce qib tsis ntev los no tsom mus rau:
- Bio-Based Alternatives:Synthesis of DAAM los ntawm cov peev txheej txuas ntxiv mus.
- High-Performance Coatings:Kev koom ua ke rau hauv nanocomposite systems rau txhim kho qhov chaw.
- Sustainable Ntim:Siv nyob rau hauv biodegradable polymer blends.
Kev tuav thiab khaws cia
- Kev Tiv Thaiv Kev Nyab Xeeb:Tsis txhob nqus pa los yog tawv nqaij; siv cov cuab yeej tiv thaiv tus kheej tsim nyog (PPE).
- Kev cia khoom:Khaws rau hauv qhov chaw txias, qhuav, thiab qhov cua zoo; tsis txhob raug ya raws thiab cua sov.
- Lub neej txee:Feem ntau ruaj khov mus txog 24 lub hlis raws li kev pom zoo.
Diacetone Acrylamide (DAAM) yog ib qho tseem ceeb monomer nyob rau hauv cov ntaub ntawv niaj hnub kev tshawb fawb, muab cov khoom tshwj xeeb uas ua rau nws tseem ceeb hauv kev ua haujlwm siab. Los ntawm nws lub peev xwm sib txuas sib txuas mus rau nws cov ntawv thov dav dav, DAAM tseem ua lub luag haujlwm tseem ceeb hauv kev ua kom cov nplaum nplaum, txheej txheej, thiab cov polymers. Nws txoj kev sib raug zoo nrog cov thev naus laus zis uas muaj txiaj ntsig zoo ua rau nws yog qhov tseem ceeb hauv kev tsim kho tshiab yav tom ntej.
Post lub sij hawm: Dec-15-2024