Usoro mkpuchi mkpuchi

Mkpuchi-akpụ usoro nwere ike kewaa gbazee coalescence na-etolite a mkpuchi film larịị atọ nkebi.

N'otu oge okpomọkụ, ọnụọgụ coalescence na-achịkwa a wụrụ awụ bụ ihe kachasị mkpa bụ ebe mgbaze nke resin, viscosity nke ala a wụrụ awụ nke ntụ ntụ na nha nke ntụ ntụ. Ka kacha mma coalescence nke a wụrụ awụ ga-ozugbo o kwere mee, iji nwee ogologo oge iji wuchaa larịị larịị eruba mmetụta. Ojiji nke onye na-agwọ ọrịa na-ebelata ka ọ na-eruba na nhazi nke oge achọrọ, ya mere ihe nkiri mkpuchi nke ndị ahụ na-arụsi ọrụ ike ntụ ntụ na-enyekarị peel oroma.

Isi ihe na-emetụta mkpuchi mkpuchi na ọkwa ọkwa bụ mgbaze viscosity nke resin, esemokwu elu nke usoro na ọkpụrụkpụ ihe nkiri. N'aka nke ya, viscosity gbazee, karịsịa na-adabere na okpomọkụ nke ọgwụgwọ, ọnụ ọgụgụ ọgwụgwọ na ọnụego kpo oku.

Ihe dị iche iche e kwuru n'elu, ọnụ na urughuru size nkesa na film ọkpụrụkpụ, na-emekarị kpebisiri ike site chọrọ film Njirimara na-ese ihe na ntụ ntụ ewu ọnọdụ kpebiri. Uwe ntụ ntụ eruba na larịị nke ike si n'elu esemokwu nke usoro, a n'ihu e kwukwara. The ike na etinyere na mma n'etiti ụmụ irighiri na mkpuchi ihe nkiri na Kama nke ahụ, N'ihi, dị ka gbazee viscosity bụ elu, ukwuu na-eguzogide megide eruba na larịị. N'ihi ya, elu esemokwu, na molekụla size nke dị iche n'etiti ike ndọda na-ekpebi ókè mkpuchi ihe nkiri larịị.

Maka mkpuchi nke nwere ezigbo mmiri na-asọpụta, o doro anya na esemokwu elu nke usoro ahụ kwesịrị ịdị elu dị ka o kwere mee, na viscosity gbazere dị ka o kwere mee. Enwere ike nweta ihe ndị a site n'ịgbakwunye ihe mgbakwunye na esemokwu elu nke usoro ahụ nwere ike ime ka ọ dịkwuo mma na iji ebe mgbaze dị ala nke resin nke ịdị arọ dị ala.

Usoro mkpuchi mkpuchi

mkpuchi mkpuchi nwere ike kwadebere dị ka n'elu ọnọdụ nwere magburu onwe eruba Njirimara, ma n'ihi na nke elu elu esemokwu na-akpata shrinkage, n'ihi na ala gbazee viscosity ga-n'ịwa sagging, na n'akụkụ Ogbenye coatability. N'ime ọrụ bara uru, a na-achịkwa esemokwu elu na viscosity nke usoro ahụ n'ime ihe dị iche iche, ya mere enwere ike nweta ọdịdị elu mkpuchi ruru eru.

A na-egosi mmetụta nke esemokwu dị n'elu na gbazee viscosity nke ntinye nke ihe nkiri mkpuchi na-egosi na foto 2. Dị ka a na-ahụ na ọnụ ọgụgụ ahụ, nhụsianya elu nke oke ala ma ọ bụ nke dị elu nke na-agbaze viscosity ga-egbochi mkpuchi mkpuchi, na-akpata ya. a mkpuchi film ogbenye flowability, na elu erughị ala bụ oke elu film akpụ usoro ga-apụta craters. The anụ ahụ nchekwa kwụsie ike nke gbazee viscosity dị oke ala ga-eme ka ntụ ntụ emebi Ogbenye coatability nke a nkuku ewu, na-ewu na facade sagging.

Na nchịkọta, o doro anya na, ikpeazụ n'elu ọnọdụ nke enwetara ntụ ntụ mkpuchi film, ntụpọ na adịghị ike (dị ka oroma bee, ogbenye flowability, craters, pinholes, wdg) bụ njikọ chiri anya, nakwa na ntinye usoro itinye aka na ya. mgbanwe agba na njikwa ike rheological. Nkesa nha nha ntụ ntụ na-emetụtakwa ọdịdị elu nke ihe nkiri mkpuchi. Obere ihe ndị dị ntakịrị, ihe ndị buru ibu nke dị ala n'ihi ikike okpomọkụ ya, ya mere oge ịgbaze ya dị mkpụmkpụ karịa nke nnukwu ihe, coalescents nwekwara ngwa ngwa, na mma elu ọdịdị nke mkpuchi mkpuchi na-etolite. Nnukwu ntụ ntụ na-agbaze oge karịa ogologo nke obere ahụ, ihe nkiri mkpuchi kpụrụ na nwere ike ịmepụta mmetụta peel oroma. Electrostatic uzuzu uzuzu usoro (corona mwepu ma ọ bụ esemokwu mwepu), ma na-eduga ná nguzobe nke ihe na-akpata na oroma bee.

Otu esi ebelata ma ọ bụ zere mmetụta peel oroma iji kwalite eruba na ọkwa nwere ike ibelata ma ọ bụ zere bee oroma. Usoro ahụ na-eji obere mgbaze viscosity dị ala, na-agbatị ogologo oge na esemokwu elu dị elu na usoro ọgwụgwọ nwere ike ime ka ọ dịkwuo mma na nhazi. The mkpa parameters ịchịkwa elu erughị ala gradient na-ebelata oroma bee, mgbe nakwa ịchịkwa elu erughị ala nke mkpuchi film elu bụ edo, iji nweta kasị nta n'elu ebe.

A na-ejikarị onye na-eme ihe na-eme ka mmiri ma ọ bụ onye na-eme ihe na-emepụta ihe na-arụ ọrụ n'ezie iji meziwanye ọdịdị nke mkpuchi ahụ, iji kpochapụ ntụpọ dị n'elu dị ka peel oroma, craters, pinholes. Ịrụ ọrụ dị mma nke onye na-akwalite mgbasa ozi nwere ike ibelata viscosity gbazee, si otú a na-enye aka na ngwakọta agbaze na mgbasa nke pigmenti, iji mee ka wettability nke mkpụrụ ahụ dịkwuo mma, ntinye na ọkwa nke mkpuchi ahụ, na-enyere aka iwepụ ntụpọ elu dị ka nke ọma. dị ka ikwado ntọhapụ nke ikuku.

Ekwesịrị inyocha usoro onunu ogwu na mmetụta mmetụta. Enweghi oke ego ga-eme ka mbelata na bee oroma, oke oriri ga-eduga n'ịpụ na gloss, azuzuzu, ma mepụta nsogbu nchikota n'elu. Na-emekarị, a na-agbakwunye ihe na-eme mgbanwe na premix. Ma ọ bụ mere nke resin master batch (resin na ihe mgbakwunye nke 9/1 ruo 8/2), ma ọ bụ na-etinye ya na onye na-ebu inorganic n'ụdị ntụ ntụ. Ọnụ ego nke ihe mgbakwunye na agba ntụ ntụ bụ 0.5 ruo 1.5% (na Binders gbakọọ polymer dị irè), ma na obere mkpokọta nwere ike ịdị mma.

Polyacrylate erugharị modifier resins nke a na-ejikarị eme ihe, dị ka polyacrylic acid butyl ester ("Acronal 4F"), acrylic acid ethyl - ethyl hexyl acrylate copolymer na butyl acrylate - acrylic acid-hexyl acrylate copolymer, wdg. oke ịta ahụhụ. Na-emekarị polyacrylate obere mmetụta na elu esemokwu, ha nwere ike na-eme ka mkpuchi na-akpụ a dịtụ mgbe niile edo elu. E jiri ya tụnyere ndị nke elu erughị ala na-ebelata ihe mgbakwunye (dị ka silicone ma ọ bụ ihe ndị yiri ya), ha anaghị ebelata esemokwu elu, ya mere enwere ike iji mee ka ọkwa ahụ dịkwuo elu. Belata esemokwu elu nke ihe mgbakwunye gụnyere ihe ndị na-arụ ọrụ elu, alkyl esters fluorinated, na silicone. Ha na-esonyere ego dị nnọọ nro. Benzoin bụ onye na-emepụta ihe, na-enwekwa mmetụta nke ibelata esemokwu elu, a na-ejikarị eme ihe iji meziwanye ọdịdị elu nke ihe nkiri mkpuchi nke mkpuchi ntụ ntụ.

Usoro mkpuchi mkpuchi