I-cellulose ethers kwi putty eludongeni

I-Cellulose ether (i-hydroxypropyl methylcellulose, i-HPMC ngokufutshane) yingxube eqhelekileyo yokwakha i-putty yodonga lwangaphakathi kwaye idlala indima ebalulekileyo kwi-putty. I-HPMC ene-viscosities eyahlukeneyo inempembelelo enkulu ekusebenzeni kwe-putty. Eli phepha lifunda ngokucwangcisiweyo iziphumo kunye nemithetho ye-viscosities eyahlukeneyo ye-HPMC kunye nedosi yayo ekusebenzeni kwe-putty, kwaye imisela eyona viscosity kunye nedosi ye-HPMC kwi-putty.

Amagama angundoqo: cellulose ether, viscosity, putty, ukusebenza

0.Intshayelelo

Ngophuhliso loluntu, abantu banqwenela ngakumbi ukuhlala kwindawo elungileyo yangaphakathi. Kwinkqubo yokuhlobisa, imimandla emikhulu yeendonga kufuneka ikhutshwe kwaye ifakwe nge-putty yokuzalisa imingxuma. I-Putty yinto ebaluleke kakhulu yokuxhasa umhlobiso. Ukunyangwa kwe-putty yesiseko esibi kuya kubangela iingxaki ezinjengokuqhekeka kunye nokukhupha i-coating yepeyinti. Ukusebenzisa inkunkuma yemizi-mveliso kunye neeminerali ezinobuncwane ezineepropati zokucoca umoya ukufunda i-putty yesakhiwo esitsha sokukhusela indawo ibe ngumxholo oshushu. IHydroxypropyl methyl cellulose (iHydroxypropyl methyl cellulose, isifinyezo sesiNgesi sithi HPMC) sisixhobo sepolymer esinyibilikayo emanzini, njengomxube osetyenziswa kakhulu kwi-putty yokwakha, inokugcina amanzi kakuhle, yandisa ixesha lokusebenza kwaye iphucula umsebenzi wokwakha, Ukuphucula ukusebenza kakuhle. . Ngokusekwe kuphando lovavanyo lwangaphambili, eli phepha lilungiselele uhlobo lwangaphakathi eludongeni lwe-putty yokhuselo lokusingqongileyo kunye ne-diatomite njengeyona nto isebenzayo yokuzalisa, kwaye yafunda ngokucwangcisiweyo imiphumo ye-viscosity eyahlukeneyo ye-HPMC kunye nomthamo we-putty kwi-putty yokumelana namanzi, amandla okudibanisa, ukuqala. ukomisa ukumelana nokuqhekeka, ukugaya Impembelelo yokusebenza, ukusebenza kunye nexesha elomileyo lomphezulu.

1. Inxalenye yovavanyo

1.1 Vavanya imathiriyeli ekrwada kunye nezixhobo

1.1.1 Iimathiriyeli ekrwada

I4W-I-HPMC, i-10 W-I-HPMC, kunye ne-20 W-I-HPMC i-cellulose ether kunye ne-polyvinyl alcohol irubber powder esetyenziswe kuvavanyo yanikezelwa yi-Kima Chemical Co., Ltd; i-diatomite yanikezelwa yiNkampani yeJilin Diatomite; i-calcium enzima kunye ne-talcum powder Ebonelelwe yi-Shenyang SF Industrial Group; I-32.5 R yesamente emhlophe yasePortland yabonelelwa yiYatai Cement Company.

1.1.2 Izixhobo zovavanyo

umvavanyi wesamente wobumanzi be-NLD-3; umhloli wokuqala wokumisa i-anti-cracking BGD 597; umvavanyi okrelekrele bond amandla HC-6000 C; ukuxuba kunye nokusasaza umatshini we-BGD 750 weenjongo ezininzi.

1.2 Indlela yovavanyo

Ifomula eyisiseko yovavanyo, oko kukuthi, umxholo wesamente, i-calcium enzima, i-diatomite, i-talcum powder kunye ne-polyvinyl alcohol yi-40%, i-20%, i-30%, i-6% kunye ne-4% yobunzima bubonke be-putty powder, ngokulandelanayo. . Iidosi ze-HPMC ezine-viscosities ezintathu ezahlukeneyo zi-1‰, 2‰, 3‰, 4‰kunye ne5‰ngokulandelelanayo. Ukuze kube lula ukuthelekisa, ubukhulu bokwakhiwa kwe-putty single-pass kulawulwa kwi-2 mm, kwaye idigri yokwandisa ilawulwa kwi-170 mm ukuya kwi-180 mm. Iimpawu zokubona okokuqala ukomisa ukumelana nokuqhekeka, amandla ebhondi, ukumelana namanzi, ipropathi yesanti, ukusebenza kunye nexesha elomileyo lomphezulu.

2. Iziphumo zovavanyo kunye neengxoxo

2.1 Iimpembelelo ze-viscosities ezahlukeneyo ze-HPMC kunye nomthamo wayo kumandla ebhondi ye-putty

Ukusuka kwiziphumo zovavanyo kunye neegophe zamandla ebhondi yee-viscosities ezahlukeneyo ze-HPMC kunye nomxholo wayo kwi-putty.'s bond amandla, kunokubonwa ukuba putty's amandla bond kwandisa kuqala kwaye ke kuncipha ngokunyuka komxholo HPMC. Amandla ebhondi ye-putty anempembelelo enkulu, eyanda ukusuka kwi-0.39 MPa xa umxholo u-1‰ukuba 0.48 MPa xa umxholo 3‰. Oku kungenxa yokuba xa i-HPMC ihlakazekile emanzini, i-etere yeselulosi emanzini idumba ngokukhawuleza kwaye ixube kunye nomgubo werabha, idityaniswe enye kwenye, kwaye imveliso yesamente ye-hydration ijikelezwe yile filimu yepolymer ukwenza isigaba se-matrix esiyintlanganisela, esenza i-putty bond Amandla ayanda, kodwa xa isixa se-HPMC sikhulu kakhulu okanye i-viscosity iphezulu kakhulu okanye iphantsi kakhulu, ifilimu ye-polymer eyenziwe phakathi kwe-HPMC kunye namasuntswana e-samente inesiphumo sokutywinwa, esinciphisa amandla ebhondi ye-putty.

2.2 Iimpembelelo ze-viscosities ezahlukeneyo ze-HPMC kunye nomxholo wayo ngexesha elomileyo le-putty

Inokubonwa kwiziphumo zovavanyo lwee-viscosities ezahlukeneyo ze-HPMC kunye nomthamo wayo kwixesha lokumisa umphezulu we-putty kunye nejika lexesha lokumisa umphezulu. Okukhona i-viscosity ye-HPMC inkulu kwaye idosi enkulu, kokukhona ixesha lokumisa umphezulu lide le-putty. /T298-2010), ixesha elomileyo lomphezulu wodonga lwangaphakathi lwe-putty aliyi kudlula i-120 min, kwaye xa umxholo we-10 W.-I-HPMC ingaphezulu kwe-4‰, kunye nomxholo we-20 W-I-HPMC ingaphezulu kwe-3‰, ixesha elomileyo lomphezulu weputty lidlula iimfuno ezichaziweyo. Oku kungenxa yokuba i-HPMC inesiphumo esihle sokugcina amanzi. Xa i-HPMC ixutywe kwi-putty, iimolekyuli zamanzi kunye namaqela e-hydrophilic kwisakhiwo semolekyuli ye-HPMC inokudibanisa enye kwenye ukwazisa amaqamza amancinci. La maqamza anempembelelo "ye-roller", enenzuzo kwi-putty batching Emva kokuba i-putty iqiniswe, ezinye iibhubhu zomoya zisekho ukwenza ii-pores ezizimeleyo, ezithintela amanzi ukuba aphume ngokukhawuleza kwaye andise ixesha lokumisa umphezulu we-putty. Kwaye xa i-HPMC ixutywe kwi-putty, iimveliso ze-hydration ezifana ne-calcium hydroxide kunye nejeli ye-CSH kwisamente zifakwe kwiimolekyuli ze-HPMC, ezinyusa i-viscosity yesisombululo se-pore, kunciphisa ukuhamba kwee-ion kwisisombululo se-pore, kunye nokulibaziseka okungaphezulu. inkqubo yokufakwa kwesamente.

2.3 Iimpembelelo ze-viscosities ezahlukeneyo ze-HPMC kunye nomthamo wayo kwezinye iipropathi ze-putty

Inokubonwa kwiziphumo zovavanyo lwempembelelo ye-viscosities eyahlukeneyo ye-HPMC kunye nomthamo we-putty kwezinye iipropati ze-putty. Ukongezwa kwe-HPMC ngee-viscosities ezahlukeneyo kwenza ukomisa kokuqala ukuchasana nokuqhekeka, ukuxhathisa kwamanzi kunye nokusebenza kwesanti ye-putty yonke into eqhelekileyo, kodwa ngokunyuka kwenani le-HPMC , ukusebenza kakubi kokwakhiwa. Ngenxa yesiphumo esityebileyo se-HPMC, umxholo omninzi kakhulu uya kwandisa ukuhambelana kwe-putty, okuya kwenza kube nzima ukukrazula i-putty kunye nokuwohloka komsebenzi wokwakha.

3. Isiphelo

(1) Amandla adibeneyo e-putty ayanda kuqala kwaye ayancipha ngokunyuka komxholo we-HPMC, kwaye amandla adibeneyo e-putty achaphazeleka kakhulu xa umxholo we-10 W-HPMC yi-3‰.

(2) Okukhona i-viscosity enkulu ye-HPMC kwaye ngakumbi umxholo, ixesha elide lokumisa umphezulu we-putty. Xa umxholo we-10 W-HPMC udlula i-4‰, kunye nomxholo we-20 W-HPMC udlula i-3‰, ixesha lokumisa umphezulu we-putty lide kakhulu kwaye alihambisani nomgangatho. Funa.

(3) Ukongeza i-viscosities eyahlukeneyo ye-HPMC yenza ukomisa kokuqala ukuchasana nokuqhekeka, ukuxhathisa kwamanzi kunye nokusebenza kwesanti ye-putty eqhelekileyo, kodwa ngokunyuka komxholo wayo, ukusebenza kokwakhiwa kuba kubi. Ukuqwalasela ngokubanzi, ukusebenza kweputty exutywe ne-3‰10 W-HPMC yeyona ilungileyo.