Barta Dhisme Halis ah

Faahfaahinta alaabta

Magaca buuxa ee anhydride maleic waa maleic anhydride (sidoo kale loo yaqaan maleic acid anhydride), kaas oo ah budada crystalline aan midab lahayn oo leh ur cuncun leh. Waxa markii ugu horreysay laga helay malic acid sannadkii 1834. Maleic anhydride waxa lagu soo saari karaa oksaydhdhismeed katalytic ee benzene ama iyada oo oxidizing butene ama butane leh hawo. Waxay ku milmi kartaa ethanol, ether iyo acetone, laakiin aan lagu milmin ether petroleum iyo carbon tetrachloride. Waxay la falgashaa biyo kulul si ay u sameyso malic acid. Waxa loo isticmaalaa isku dhafka Dienes, soo saarista dawooyinka, sunta cayayaanka, dhexdhexaadiyaha dheeha, iyo soo saarista xabagta polyester-ka, resins alkyd, acids organic sida maleic acid, waxa kale oo loo isticmaalaa ilaalinta dufanka iyo saliidaha, iwm.

Codsiga alaabta

Adipic acid (trans-butylene dicarboxylic acid) waa walxo kiimiko ah oo muhiim ah oo ceeriin ah oo leh codsiyo ballaaran, oo inta badan daboolaya beeraha sida walxaha polymer, kiimikooyinka wanaagsan, daawada, sunta cayayaanka, dahaarka, iwm.

1. Xabagta polyester-ka aan sasaturated (UPR): Tani waa meesha ugu weyn ee laga codsado adipic acid, taasoo ka dhigan 40% -50% isticmaalka guud. Adipic acid waxay la falgashaa polyols si ay u samayso polyester aan saturated ahayn, ka dibna kobolymerized leh styrene si ay u sameeyaan fiberglass caag xoojiyay (FRP). Waxaa si weyn loogu isticmaalaa dhismaha (tubooyinka, taangiyada), baabuurta (qaybaha), dhismaha maraakiibta, iwm, oo leh sifooyinka miisaanka fudud, xoogga sare, iyo iska caabinta daxalka.

2. Dhexdhexaadiyaha kiimikada ee wanaagsan: 1,4-Butanediol (BDO): Adipic acid hydrogenation waxay abuurtaa butanediol, kaas oo loo isticmaalo in lagu soo saaro polybutylene terephthalate (PBT) balaastikada injineernimada iyo polytetrahydrofuran diol (PTMEG, spandex alaabta ceeriin). Tetrahydrofuran (THF) iyo γ-butyrolactone (GBL): Adipic acid hydrogenation waxay soo saartaa THF (qalal muhiim ah) iyo GBL (dhexdhexaadka daawada). Fumaric acid: Alaabta isomerization ee adipic acid hydrolysis, loo isticmaalo sidii cunto lagu daro (acidulant, preservative) iyo quudinta quudinta.

3. Rinjiyeynta iyo khadyada: Waxaa loo isticmaalaa in lagu soo saaro rinji alkyd resin iyo rinji amino resin, oo leh dhejis wanaagsan, dhalaalid, iyo iska caabin daxalka, oo si weyn loogu isticmaalo dhismaha, mishiinada, iyo rinjiyeynta baabuurta. Waxa kale oo loo isticmaalaa sida khad lagu daro si loo hagaajiyo adhesion iyo sifooyinka qalajinta ee khad.

4. Cayayaanka iyo daawada: In wax soo saarka cayayaanka, waxaa loo isticmaalaa in synthesize organophosphorus insecticides (sida malathion), pyrethroid cayayaanka (sida amide pyrethroid), iwm in berrinkii daawada, waxaa loo isticmaalaa in lagu diyaariyo daawooyinka ka hortagga boogaha ， anti-bararka dhexdhexaadinta daroogada.

5. Kiimikooyinka warqad-samaynta: Sida wax lagu daro warqad-samaynta, loo isticmaalo daawaynta waraaqaha, hagaajinta xoogga iyo cimriga warqadda. 6. Waxyaalaha lagu daro saliidda: Waxaa loo isticmaalaa in lagu soo saaro kala-firdhiyeyaal aan dambas lahayn, hagaajinta nadaafadda iyo kala firdhisanaanta saliidda, sii dheeraynta nolosha engine.

Xaaladda kaydinta

1. Xaaladaha deegaanka: Goobta kaydinta waa inay ahaataa mid qabow, engegan, hawo wanaagsan leh, lagana ilaalinayo iftiinka qorraxda tooska ah. Waa in laga fogeeyaa ololka furan iyo meelaha kulaylka ah (sida shooladaha iyo kuleyliyeyaasha).

2. Shuruudaha weelka: Isticmaal dhalada ama dhalooyin caag ah oo gaar ah si aad u xirto oo u kaydiso alaabta, hubinta in weelku yihiin kuwo la isku halayn karo oo aanay daadan. Ha isticmaalin weel aan dabool lahayn.

3. Kaydinta go'doominta: Waa in si gooni ah loo kaydiyaa oksaydhiyeyaasha, acids, biraha alkali, amines, iwm.

4. Goobaha badbaadada: Isticmaal nalalka aan qarxin iyo tas-hiilaadka hawo-siinta. Ha isticmaalin qalabka farsamada ama qalabka laga yaabo inuu dhaliyo dhimbiil.

5. U diyaargarowga degdega ah: Aagga kaydinta waa in lagu qalabeeyaa qalabka wax ka qabashada degdega ah ee daadsan iyo agabka xakamaynta ku habboon, sida ciid ama walxo kale oo aan guban karin.