Ubunyulu be-hydroxypropyl methylcellulose kwi-insulation mortar yokwakha kunye ne-putty powder buchaphazela ngokuthe ngqo umgangatho wolwakhiwo lobunjineli, ngoko ke zeziphi izinto ezichaphazela ubunyulu be-hydroxypropyl methylcellulose? Makhe ndikuphendulele lo mbuzo.
Kwinkqubo yokuvelisa i-hydroxypropyl methylcellulose, i-oksijini eseleyo kwi-reactor iya kubangela ukuwohloka kwe-hydroxypropyl methylcellulose kwaye inciphise ubunzima be-molecular, kodwa i-oksijini eseleyo ilinganiselwe, logama nje kungekho nzima kakhulu ukuphinda udibanise iimolekyuli eziphukileyo. Isantya sokwanda kwamanzi esibaluleke kakhulu sinxulumene kakhulu nomxholo we-hydroxypropyl. Ezinye iifektri zifuna ukunciphisa iindleko kunye nexabiso kuphela, kodwa azifuni ukwandisa umxholo we-hydroxypropyl, ngoko umgangatho awunakufikelela kwinqanaba leemveliso ezifanayo zangaphandle.
Izinga lokugcina amanzi le-hydroxypropyl methylcellulose nalo linobudlelwane obuhle ne-hydroxypropyl, kwaye kuyo yonke inkqubo yokusabela, i-hydroxypropyl ikwamisela izinga lokugcina amanzi le-hydroxypropyl methylcellulose. Isiphumo se-alkaliization, umlinganiselo we-methyl chloride kunye ne-propylene oxide, uxinzelelo lwe-alkali kunye nomlinganiselo wamanzi kumqhaphu ocociweyo zonke ezi zigqibo zimisela ukusebenza kwemveliso.
Umgangatho wezinto ezikrwada, isiphumo se-alkalization, ulawulo lomlinganiselo wenkqubo, umlinganiselo we-solvents kunye nesiphumo se-neutralization zonke ezimisela umgangatho we-hydroxypropyl methylcellulose, kwaye i-hydroxypropyl methylcellulose ethile yenziwa ukuba inyibilike. Emva koko, kwakumnyama njengokongeza ubisi, ezinye zazimhlophe njengobisi, ezinye zazimthubi, kwaye ezinye zazicacile kwaye zicacile. Ukuba ufuna ukuyisombulula, lungisa ukusuka kumanqaku angentla. Ngamanye amaxesha i-acetic acid inokuchaphazela kakhulu ukuhanjiswa kokukhanya. Kungcono ukusebenzisa i-acetic acid emva kokuxuba. Eyona mpembelelo inkulu kukuba ingaba impendulo ixutywe ngokulinganayo na kwaye ingaba umlinganiselo wenkqubo uzinzile (ezinye izinto zinomswakama kwaye umxholo awuzinzile, njenge-recycling solvents). Enyanisweni, kukho izinto ezininzi ezidlalayo. Ngokuzinza kwezixhobo kunye nokusebenza kwabaqhubi abaqeqeshwe kakuhle, iimveliso eziveliswayo kufuneka zizinzile kakhulu. Ukuhanjiswa kokukhanya akuyi kudlula uluhlu lwe-±2%, kwaye ukufana kokutshintshwa kwamaqela atshintshayo kufuneka kulawulwe kakuhle. Endaweni yokufana, ukuhanjiswa kokukhanya ngokuqinisekileyo kuya kuba kulungile.
Ixesha lokuthumela: Meyi-30-2023