Izinamathiselo zezentengiselwano, njengezinto ezibalulekile embonini yesimanje nempilo yansuku zonke, zinezakhiwo ezincike kakhulu ekwakhiweni nasekulinganiseni kwezingxenye zazo zamakhemikhali. Izinhlobo ezahlukene zokunamathisela zifinyelela umsebenzi wazo wokubopha ngokusebenzisa izakhiwo zamakhemikhali ezithile futhi zisetshenziswa kabanzi emikhakheni efana neyokwakha, i-electronics, izimoto, kanye nokupakisha. Lesi sihloko sizohlola ngokuhlelekile izingxenye zamakhemikhali ezinamathelayo zezentengiselwano kanye nomthelela wazo ekusebenzeni.
1. I-Polymer Matrix: Ingxenye Eyinhloko Yezinto Ezinamathelayo
Ukusebenza okubophayo kokunamathelayo kwezentengiselwano kunqunywa ngokuyinhloko yi-polymer matrix. Izinhlobo ezijwayelekile ze-polymer zifaka:
Ama-acrylates
Izinamathiselo ze-acrylate zenziwe nge-acrylic acid noma i-methacrylate monomers futhi zinikeza ukwelashwa okusheshayo, ukucaca okuphezulu, nokumelana nesimo sezulu esihle kakhulu. Amabhondi e-carbon{{1}carbon double bond esakhiweni sawo samakhemikhali enziwa i-free radical polymerization ngaphansi kwesenzo se-initiator, enze inethiwekhi exhunyiwe{2}}eqinile. Lezi zinamathiselo zivame ukusetshenziselwa ukuhlanganisa ingilazi, amapulasitiki, nezinsimbi.
Ama-Epoxy Resins
Ama-epoxy resin asabela ngamaqembu e-epoxy (-CH(O)CH-) kanye nama-amine noma ama-anhydride elaphayo ukuze akhe uhlaka lwenethiwekhi-entathu, okuholela kumandla ebhondi aphezulu kakhulu nokumelana namakhemikhali. Ukuzinza kwabo kwamakhemikhali kubenza bafanelekele izinhlelo zokusebenza ezinzima ezifana ne-aerospace kanye ne-electronic packaging.
I-polyurethanes
Izinamathiselo ze-polyurethane, ezikhiqizwe ukusabela kwe-isocyanate (-i-NCO) nama-polyols (-OH), anikeza kokubili ukuguquguquka nokungagugi. Amabhondi e-urethane (-NH-COO-) emaketangeni awo emolekyuli anikeza ukumelana okuhle komthelela kanye{6}}nokumelana nezinga lokushisa eliphansi, okuwenza asetshenziswe kabanzi ezisetshenziswa ezifana nezicathulo nangaphakathi kwezimoto.
Ama-Silicone
Izinamathiselo ze-silicone, ezine-siloxane (-Si{1}}O-Si-) umgogodla, zibonisa ukumelana okuhle kakhulu nokushisa okuphezulu, imisebe ye-UV, nokuguga. I-inertness yabo yamakhemikhali ibenza balungele ukuvala nokuvikela isimo sezulu, futhi ngokuvamile basetshenziselwa ukwakha izindonga zamakhethini nokuvikela izingxenye ze-electronic.
2. Ama-ejenti Aqinisayo Nokugcwalisa: Ukhiye Wokuthuthukisa Ukusebenza
Ukuze kuthuthukiswe ukusebenza okuphelele kwama-adhesives, izithako ezilandelayo ezisizayo zivame ukungezwa:
Ama-Toughening Agents
Njengenjoloba ye-nitrile (NBR) noma ama-thermoplastic elastomers (afana ne-SBS), amunca amandla omthelela ngesakhiwo sawo sokuhlukaniswa se-microphase, athuthukise ukumelana nokuqhekeka kwezinamatheliso eziphukayo njengama-epoxy resins.
Okugcwalisa
• Izigcwalisi ze-Inorganic (njenge-calcium carbonate ne-silica) zinganciphisa izindleko futhi zithuthukise ukuqhutshwa kokushisa.
• Ama-Nanofiller (njengama-carbon nanotubes kanye ne-graphene) angathuthukisa kakhulu amandla emishini kanye nokuhamba kukagesi kokunamathelayo.
Ama-solvents kanye nama-Diluents
Izinyibilikisi zemvelo (njenge-acetone ne-toluene) zisetshenziselwa ukulungisa i-viscosity, kodwa izinto ezinamathelayo ezisekelwe emanzini{0}ezihambisana nemvelo kancane kancane zithatha indawo yemikhiqizo{1}esekelwe ekuncibilikeni komdabu ukuze kwehliswe ukukhishwa kwe-VOC.
3. Ama-Curing Agents nama-Catalysts: Drivers of the Cross{1}}I-Linking Reaction
Ukusebenza kokugcina kwe-adhesive kuvame ukuncika ekusebenzeni kahle kokusabela kokwelapha:
• Ama-amine elaphayo (njengama-aliphatic amines nama-aromatic amines) asabela ngamaqembu e-epoxy ukuze akhe{0}}ukwakheka okuphezulu kwe-crosslink.
• Ama-ejenti okwelapha acashile (afana ne-dicyandiamide) akhulula amaqembu asebenzayo lapho kushiswa, awenze afanelekele{0}}ukusetshenziswa kwezinga lokushisa eliphezulu.
• Ama-Acidic/basic catalysts (afana ne-dibutyltin dilaurate) asheshisa izinga le-polymerization lama-polyurethanes noma ama-acrylates.
4. Izengezo Ezisebenzayo: Ukuhlangabezana Nezidingo Ezikhethekile
Ngokuya ngesicelo, izinamathiselo zentengiso zingaqukatha izithako ezilandelayo ezikhethekile:
• Ama-photoinitiators e-UV (afana ne-BP ne-ITX) asetshenziswa ekukhanyeni{{0}okunamathelisa okwelapha ukuze kuzuzwe ukubopha kwamahhala okusheshayo, okuncibilikayo{1}.
• Ama-flame retardants (njenge-aluminium hydroxide nezinhlanganisela ze-phosphorus) athuthukisa ukuphepha kwezinamatheliso ezisetshenziswa ezintweni zikagesi nezikagesi.
• Ukuqinisa ama-resin (afana ne-rosin kanye ne-terpene phenolic resins) kuthuthukisa ukumanzisa{0}kuzinto eziphansi-zamandla.
Isiphetho
Idizayini yokwakheka kwamakhemikhali yezinto ezinamathelayo zezentengiselwano idinga ibhalansi phakathi kwamandla ebhondi, ukumelana nemvelo, kanye nokuvumelana nezimo. Ngokuthuthuka kwe-polymer chemistry kanye ne-nanotechnology, izinto ezinamathelayo ezintsha zithuthukela ekusebenzeni okuphezulu kanye nobungane bemvelo. Ukwenziwa kahle kokwakheka kwawo kwamakhemikhali kuzoqhubeka nokugqugquzela ukusungulwa kwezimboni kanye nokwenziwa kwansuku zonke.