Polyisobutylene (PIB)bụ ihe na-enweghị agba, enweghị ụtọ, ihe na-adịghị egbu egbu ma ọ bụ ihe siri ike, nkwụsị ọkụ, ikuku oxygen, nguzogide ozone, nguzogide ihu igwe, nguzogide ultraviolet, acid na alkali na-eguzogide ọgwụ na ihe ndị ọzọ na-arụ ọrụ nke ọma.Polyisobutylene bụ isobutylene homopolymer enweghị isi, enweghị isi, anaghị egbu egbu.N'ihi ụzọ nkwadebe dị iche iche na ọnọdụ nkà na ụzụ, ọnụọgụ kemịkalụ molecular nke polyisobutylene dịgasị iche iche.Ọtụtụ n'ime ihe dị arọ nke ngwaahịa ahụ ruru ihe karịrị 10,000 ruo 200,000 ga-agbanwe site na nnukwu mmiri mmiri gaa na nke siri ike, wee gbanwee gaa na elastomer nke rọba.Polyisobutylene na-eguzogide acid, alkali, nnu, mmiri, ozone na ịka nká, ma nwee ezigbo njigide ikuku na mkpuchi eletrik.
Njirimara kemịkalụ:enweghị agba ka ìhè odo viscous mmiri mmiri ma ọ bụ na-agbanwe rubbery semisolid (obere molekụla arọ bụ nro gelatinous, elu molekụla arọ bụ ductile na na-agbanwe).Ihe niile na-esi ísì ụtọ, enweghị isi ma ọ bụ ntakịrị ísì ísì.Nkezi molecular arọ bụ 200,000 ~ 87 nde.Soluble na benzene na diisobutyl Chemicalbook, nwere ike miscible na polyvinyl acetate, wax, wdg, insoluble na mmiri, mmanya na ndị ọzọ pola solvents.Ọ nwere ike ime ka shuga chịngọm nwee ezigbo nro na obere okpomọkụ, ma nwee ụfọdụ plasticity na elu okpomọkụ iji mejupụta adịghị ike nke polyvinyl acetate mgbe oyi na-atụ, ihu igwe na-ekpo ọkụ na oke nro mgbe ọ na-ezute ọnụ ọnụ.
Ngwa:A maara PIB maka ihe mkpuchi ya dị mma na ihe nkwụnye, nke a na-ejikarị eme ihe na ihe mkpuchi, mkpuchi na mkpuchi.Ngwongwo dị ka roba nke PIB na-eme ka ọ bụrụ nhọrọ magburu onwe ya maka itinye akara na ngwa njikọ, ebe ọ na-enyere aka ịnye njikọ siri ike na nke na-adịgide adịgide n'ọtụtụ ntọala.Na mgbakwunye na ojiji ya bara uru, a na-ejikarị PIB eme ihe na ịchọ mma na ihe nlekọta onwe onye n'ihi ihe ndị nwere ike ime ka ọ dị mma.A na-ejikọta ihe ahụ na ihe ndị ọzọ na-emepụta ihe na-emepụta ihe nwere ọdịdị pụrụ iche na mmetụta.
PIB nwekwara ngwa dị iche iche na ụlọ ọrụ nri.A na-ejikarị ihe ahụ eme ihe dị ka ihe na-agbapụta, stabilizer, na emulsifier n'ime nri ndị edozichara.PIB nwekwara ike inye aka melite udidi na nkwụsi ike nke ngwaahịa dị ka ice cream, ịta chịngọm, na ngwaahịa esitere.Ntughari nke PIB na-eme ka ọ bụrụ ihe dị mkpa maka ndị na-emepụta ihe na ụlọ ọrụ nri.
A na-ejikwa PIB n'ọtụtụ ebe na ụlọ ọrụ ahụike.Ihe ndị na-adịghị egbu egbu na-eme ka ọ dị mma maka iji ya na ngwa ahụike.A na-ejikarị ihe ahụ eme ihe dị ka ihe nkwụsịtụ na ọgwụ mgbochi, yana ihe dị n'ime ọtụtụ ọgwụ.Ọdịdị hydrophobic nke PIB na-enyere ya aka ịrapagidesi ike na akpụkpọ ahụ, na-eme ka ọ baa uru na mmepụta nke nrapado ọgwụ.
Njirimara:Polyisobutylene nwere akụrụngwa kemịkalụ nke ogige hydrocarbon juru eju, na otu methyl yinye n'akụkụ bụ nkesa symmetrical, nke bụ polymer pụrụ iche.Ọnọdụ nchịkọta na ihe onwunwe nke polyisobutylene na-adabere n'ịdị arọ molekụla ya na nkesa arọ molecular.Mgbe viscosity nkezi ịdị arọ molekụla dị na nso nke 70000 ~ 90000, polyisobutylene na-agbanwe site na mmiri na-atụgharị gaa na ihe siri ike.N'ozuzu, dị ka size nke molekụla arọ nke polyisobutylene na-ekewa n'ime usoro ndị a: obere molekụla arọ polyisobutylene (ọnụọgụ nkezi molekul arọ = 200-10000);Polyisobutylene arọ molekụla dị ọkara (ọnụọgụ nkezi arọ molekul = 20000-45,000);Polyisobutylene dị arọ molekụla dị elu (ọnụọgụ nkezi arọ molekul = 75,000-600,000);Polyisobutylene dị arọ dị elu dị elu (ọnụọgụ nke ịdị arọ molekul karịrị 760000).
1. Ikuku tightness
Otu n'ime njirimara pụtara ìhè nke polyisobutylene bụ njigide ikuku ya dị mma.N'ihi ọnụnọ nke otu methyl abụọ nọchiri anya ya, mmegharị yinye molekụla na-adị nwayọ na olu efu dị ntakịrị.Nke a na-ebute ọnụọgụ mgbasa ozi dị ala na ikike gas.
2. Solubility
Polyisobutylene bụ soluble na aliphatic hydrocarbon, aromatic hydrocarbon, mmanụ ụgbọala, naphthene, ịnweta mmanụ, chlorinated hydrocarbon na carbon monosulfide.Na-agbaze n'otu akụkụ na mmanya dị elu na cheese, ma ọ bụ fụrụ akpụ na alcohols, ethers, monomers, ketones na ihe mgbaze ndị ọzọ na anụmanụ na mmanụ ihe oriri, ogo ọzịza na-abawanye na mmụba nke ogologo carbon carbon mgbaze;Na-adịghị edozi na obere alcohols (dị ka methanol, ethanol, isopropyl alcohol, ethylene glycol na coethylene glycol), ketones (dị ka acetone, methyl ethyl ketone) na glacial acetic acid.
3. Chemical mgbochi
Polyisobutylene na-eguzogide acid na alkali.Dị ka amonia, hydrochloric acid, 60% hydrofluoric acid, lead acetate aqueous solution, 85% phosphoric acid, 40% sodium hydroxide, saturated mmiri nnu, 800} sulfuric acid, 38% sulfuric acid +14% nitric acid ozize, Otú ọ dị, ọ enweghị ike iguzogide nbibi nke oxidants siri ike, ndị na-ekpo ọkụ na-adịghị ike (dị ka 60% potassium permanganate), ụfọdụ acid na-ekpo ọkụ na-ekpo ọkụ (dị ka 373K acetic acid) na halogens (fluorine, chlorine, desert).
Mbukota: 180KG drum
Nchekwa: Chekwaa n'ebe dị jụụ, ikuku na-ekpo ọkụ, ebe akọrọ na nchebe anyanwụ n'oge njem.
N'ikpeazụ, PIB bụ ihe bara uru nke nwere ọtụtụ ngwa na ụlọ ọrụ dị iche iche.Ngwongwo mkpuchi ya nke ọma na nrapado ya, yana solubility na ntụgharị ya, na-eme ka ọ dị mma maka ngwa n'ime ihe ịchọ mma, nlekọta onwe onye, nri, na ụlọ ọrụ ahụike.Dị ka onye na-ebute ụzọ nke PIB, anyị raara onwe anyị nye inye ndị ahịa anyị ngwaahịa na ọrụ kachasị mma iji gboo mkpa ụlọ ọrụ ha.
Oge nzipu: Jun-19-2023