Ukutshiza irubha ye-asphalt engangeni manzi yokubeka i-asphalt ekhawulezayo i-coating esekelwe emanzini. Ukuba i-diaphragm ayigcinwanga ngokupheleleyo emva kokutshiza, amanzi akayi kunyuka ngokupheleleyo, kwaye amaqamza omoya ashinyeneyo aya kubonakala ngokulula ngexesha lokubhaka lobushushu obuphezulu, okukhokelela ekunciphiseni ifilimu engenamanzi, kunye nokungangeni kwamanzi, ukuchasana nokubola, kunye nokuxhathisa imozulu. . Ngenxa yokuba iimeko zokusingqongileyo zolondolozo kwindawo yokwakha zihlala zingalawuleki, kunyanzelekile ukuba kuphuculwe ukumelana nobushushu obuphezulu be-sprayed i-asphalt ekhawulezayo yokuseta i-asphalt yokwaleka kwamanzi ngokwembono yokuqulunqwa.
I-ether ye-cellulose e-soluble yamanzi yakhethwa ukuphucula ukuxhathisa ubushushu obuphezulu be-sprayed i-rubber ekhawulezayo yokubeka izinto zokukhusela amanzi. Ngelo xesha, imiphumo yohlobo kunye nomthamo we-cellulose ether kwiipropati zomatshini, ukusebenza kokutshiza, ukuxhathisa ukushisa kunye nokugcinwa kokutshiza ngokukhawuleza i-rubber asphalt i-asphalt yokugquma kwamanzi yafundwa. impembelelo yokusebenza.
Ukulungiselela isampuli
Dissolve hydroxyethyl cellulose in 1/2 deionized water, xhokonxa de inyibilike ngokupheleleyo, uze udibanise i-emulsifier kunye ne-sodium hydroxide kwi-1/2 eseleyo yamanzi e-deionized kwaye uvuselele ngokulinganayo ukulungiselela isisombululo sesepha, kwaye ekugqibeleni, xuba oku ngasentla Izisombululo ezibini zixutywe ngokulinganayo ukufumana isisombululo se-aqueous se-hydroxyethyl cellulose kunye ne-pH1 yokulawula ixabiso layo kunye ne-pH1.
Xuba i-asphalt e-emulsified, i-neoprene latex, i-hydroxyethyl cellulose isisombululo se-aqueous, i-defoamer, njl. ngokomlinganiselo othile wokufumana izinto ze-A.
Lungiselela ugxininiso oluthile lwe-Ca(NO3)2 yesisombululo samanzi njengemathiriyeli ye-B.
Sebenzisa izixhobo ezikhethekileyo zokutshiza zombane ukutshiza izinto A kunye nezinto B kwiphepha lokukhupha ngaxeshanye, ukuze izinto ezimbini ziqhagamshelwe kwaye zisete ngokukhawuleza kwifilimu ngexesha lenkqubo ye-atomization.
Iziphumo neengxoxo
I-Hydroxyethyl cellulose ene-viscosity ye-10 000 mPa · s kunye ne-50 000 mPa · s yakhethwa, kwaye indlela yokongeza emva koko yamkelwa ukufundisisa imiphumo ye-viscosity kunye nomlinganiselo wokongezwa kwe-cellulose ye-hydroxyethyl kwintsebenzo yokutshiza ye-rubber ekhawulezayo yokubeka i-asphalt iipropati ze-asphalt zokungena kwamanzi, iipropati zokugcinwa kwamanzi, ukugcinwa kwefilimu kunye neempawu zokumelana nokushisa. Ukuze ugweme umonakalo kwi-balance balance ebangelwa ukongezwa kwesisombululo se-hydroxyethyl cellulose, okubangelwa ukuchithwa kwe-demulsification, i-emulsifier kunye ne-pH regulator yongezwa ngexesha lokulungiswa kwesisombululo se-hydroxyethyl cellulose.
Impembelelo yeViscosity ye-Hydroxyethyl Cellulose (HEC) ekutshizeni kunye neePropati zeFilimu zokuFamba iiNgqungquthela ezingangenwa ngamanzi.
Inkulu i-viscosity ye-hydroxyethyl cellulose (HEC), impembelelo enkulu kwi-spray kunye ne-film-forming properties ye-coatings engenamanzi. Xa isixa sayo sokongeza i-1 ‰, i-HEC ene-viscosity ye-50 000 mPa·s yenza i-viscosity yenkqubo yokugquma kwamanzi Xa inyuswa ngamaxesha angama-10, ukutshiza kuba nzima kakhulu, kwaye i-diaphragm iyancipha kakhulu, ngelixa i-HEC ene-viscosity ye-10 000 mPa·s, kunye ne-diaphrag esisiseko i-spraying inefuthe elincinci kwi-diaphrag.
Impembelelo ye-Hydroxyethyl Cellulose (HEC) ekuxhathiseni uBubushushu kwiiSayiko ezingangenwa ngamanzi
I-asphalt ye-asphalt efakwe ngokukhawuleza yokubeka i-rubber yokugquma kwamanzi yatshizwa kwiphepha le-aluminium ukulungiselela isampuli yokuvavanya ubushushu, kwaye yaphiliswa ngokwemiqathango yokunyanga ye-asphalt yamanzi e-asphalt engenamanzi echazwe kumgangatho wesizwe we-GB / T 16777-2008. I-hydroxyethyl cellulose ene-viscosity ye-50 000 mPa·s inobunzima obukhulu bemolekyuli. Ukongeza kokulibazisa ukuphuphuma kwamanzi, kubuye kube nefuthe elithile lokomeleza, okwenza kube nzima ukuba amanzi aphephe ukusuka ngaphakathi kwengubo, ngoko kuya kuvelisa ama-bulges amakhulu. I-molecular weight of hydroxyethyl cellulose ene-viscosity ye-10 000 mPa·s incinci, enempembelelo encinci kumandla wezinto eziphathekayo kwaye ayichaphazeli ukuguquguquka kwamanzi, ngoko akukho sizukulwana se-bubble.
Isiphumo sesixa se-hydroxyethyl cellulose (HEC) esongeziweyo
I-Hydroxyethyl cellulose (HEC) ene-viscosity ye-10 000 mPa·s ikhethwe njengento yophando, kunye nemiphumo yezongezo ezahlukeneyo ze-HEC ekusebenzeni kokutshiza kunye nokuchasana nokushisa kweengubo ezingenamanzi zaphandwa. Ukuqwalasela ukusebenza kokutshiza, ukuxhathisa ubushushu kunye neempawu zomatshini zokugquma kwamanzi ngokubanzi, kuqwalaselwa ukuba ukongeza ubuninzi be-hydroxyethyl cellulose yi-1 ‰.
I-latex ye-neoprene kwi-sprayed i-rubber ye-asphalt engangeni manzi yokubeka i-asphalt emanzini kunye ne-asphalt e-emulsified inomahluko omkhulu kwi-polarity kunye noxinaniso, okukhokelela kwi-delamination yezinto eziphathekayo A ngexesha elifutshane ngexesha lokugcinwa. Ngoko ke, ngexesha lokwakhiwa kwendawo Kudinga ukuxutywa ngokulinganayo ngaphambi kokuba kutshizwe, ngaphandle koko kuya kukhokelela kwiingozi ezisemgangathweni. Iselulosi yeHydroxyethyl inokusombulula ngempumelelo ingxaki ye-delamination yesitshizi esikhawulezayo sokubeka irabha yeasphalt yokugquma kwamanzi. Emva kwenyanga enye yokugcina, akukabikho delamination. I-viscosity yenkqubo ayitshintshi kakhulu, kwaye ukuzinza kulungile.
ingqalelo
I-1) Emva kokuba i-hydroxyethyl cellulose yongezwa kwi-sprayed i-asphalt ye-asphalt ekhawulezayo yokubeka i-asphalt yokugquma kwamanzi, ukunyanzeliswa kobushushu bokugquma kwamanzi kuphuculwe kakhulu, kwaye ingxaki yamaqamza ashinyeneyo phezu komgangatho wengubo iphuculwe kakhulu.
I-2) Ngaphantsi kwesiseko sokungachaphazeli inkqubo yokutshiza, ukusebenza kwefilimu kunye nezixhobo zemishini yezinto eziphathekayo, i-cellulose ye-hydroxyethyl yayizimisele ukuba yi-hydroxyethyl cellulose kunye ne-viscosity ye-10 000 mPa · s, kwaye imali eyongezelelweyo yayiyi-1 ‰.
I-3) Ukongezwa kwe-hydroxyethyl cellulose kuphucula ukuzinza kokugcinwa kwe-asphalt ye-asphalt ekhawulezayo yokubeka i-asphalt yokugquma kwamanzi, kwaye akukho delamination eyenzekayo emva kokugcinwa kwenyanga enye.
Ixesha lokuposa: May-29-2023