Ummeli wenyukliya

I-arhente ye-nucleating ilungele iiplastikhi ezingaphelelanga ezinjenge-polyethylene kunye ne-polypropylene. Ngokutshintsha indlela crystallization yokuziphatha nentlaka, oko ukukhawulezisa izinga crystallization, ukwandisa ezixineneyo yikristale nokukhuthaza miniaturization ubungakanani yikristale ukutya okuziinkozo, ukuze ukunciphisa mfutshane umjikelo yokubumba nokuphucula elubala umphezulu Izongezo ezisebenzayo ezintsha zomzimba noomatshini iipropathi ezinje ngokuqaqamba, ukuqina, ukuqina, ubushushu obugqwetha ubushushu, ukumelana nefuthe, kunye nokumelana nokuhamba.

Ukongeza iarhente ye-nucleating inokunyusa isantya se-crystallization kunye nenqanaba le-crystallization yemveliso ye-crystalline polymer, inokuthi inyuse kuphela ukusebenza kunye nesantya sokubumba, kodwa inciphise kakhulu imeko yokuphinda kabini ukwenziwa kwezinto, ngaloo ndlela kuphuculwe uzinzo lwemveliso .

Impembelelo yearhente ye-nucleating ekusebenzeni kwemveliso

Ukongezwa kwearhente ye-nucleating kuphucula iipropathi zekristall zezinto zePolymer, ezichaphazela iipropathi zomzimba kunye nokulungiswa kwezinto zepolymer.

Impembelelo kumandla eqine kunye namandla okugoba

Kwi-polymer ye-crystalline okanye ye-crystalline polymers, ukongezwa kwearhente ye-nucleating kuluncedo ekwandiseni ubunyani bePolymer, kwaye ihlala inefuthe lokuqinisa, elonyusa ubungqongqo bePolymer, amandla eqine kunye namandla okugoba, kunye nemodyuli , kodwa ukuphakama kwekhefu kunciphisa ngokubanzi.

02 Ukumelana nefuthe lamandla

Ngokubanzi, ukuphakama kokuqina okanye ukugoba kwamandla kwezinto eziphathekayo, amandla eempembelelo athanda ukulahleka. Nangona kunjalo, ukongezwa kwearhente ye-nucleating kuya kunciphisa ubungakanani be-spherulite yepolymer, ukuze ipolymer ibonise ukunganyangeki kakuhle. Umzekelo, ukongeza iarhente efanelekileyo ye-nucleating kwi-PP okanye kwi-PA izinto ezingafunekiyo kunokunyusa amandla empembelelo yezinto nge-10-30%.

Impembelelo kwintsebenzo ebonakalayo

Iipholima zesintu ezibonakalayo ngokwesiko ezinje nge-PC okanye i-PMMA zii-polymers eziqhelekileyo, ngelixa iipolymine ze-crystalline okanye ze-semi-crystalline polymer zihlala zilungile. Ukongezwa kweearhente ze-nucleating kunokunciphisa ubungakanani beenkozo zepolymer kwaye zibe neempawu zesakhiwo se-microcrystalline. Ingenza imveliso ibonakalise iimpawu eziguqukayo okanye ezibonisa ngokupheleleyo, kwaye kwangaxeshanye kunokuphucula ukugqitywa komphezulu wemveliso.

Impembelelo ekusebenzeni kwenkqubo yokubumba

Kwinkqubo yokubumba ipolymer, ngenxa yokuba ukunyibilika kwepolymer kuneqondo lokupholisa elikhawulezayo, kwaye ikholam yee molekyuli ayikhanyisanga ngokupheleleyo, ibangela ukuncipha kunye nokudodobala ngexesha lenkqubo yokupholisa, kwaye ipolymer engagqitywanga icwecwe kukuzinza okungafaniyo. Kwakhona kulula ukunciphisa ubungakanani ngexesha lenkqubo. Ukongeza iarhente ye-nucleating inokukhawulezisa inqanaba le-crystallization, lifinyeze ixesha lokubumba, liphucule ukusebenza kwemveliso kwaye linciphise inqanaba lokukhutshwa kwemveliso emva.

Iindidi zearhente ye-nucleating

I-01 α iarhente yecrystal nucleating

 Oku ikakhulu kuphucula elubala, umphezulu isilungiseleli seglosi, ngqongqo, ubushushu ubugqwetha ubugqwetha, njl imveliso. Ikwabizwa ngokuba yiarhente esekuhleni, isincedisi sokuhambisa, kunye ne rigidizer. Ngokukodwa zibandakanya i-dibenzyl sorbitol (dbs) kunye nezinye izinto ezivela kuyo, iityuwa ze-phosphate ester, i-benzoates, endaweni yayo, njl. Iiarhente ze-alpha ze-crystal nucleating zingahlulwa zibe zi-inorganic, organic kunye ne-macromolecule ngokokuma kwazo.

02 Izinto ezingaqhelekanga

Izinto ezingaphiliyo ze-nucleating zibandakanya i-talc, i-calcium oxide, i-carbon emnyama, i-calcium carbonate, i-mica, ii-pigment ezingaphiliyo, i-kaolin kunye ne-residit catalyst. Ezi zezona zinto zokuqala zenziwe ngexabiso eliphantsi kwaye zisebenza, kwaye ezona zinto ziphandwayo kwaye zisetyenzisiweyo ziiarhente ze-nucleating, talc, mica, njl

03 Izinto eziphilayo

Iityuwa zetsimbi zeCarboxylic acid: ezifana nesodium succinate, sodium glutarate, sodium caproate, sodium 4-methylvalerate, adipic acid, aluminium adipate, aluminium tert-butyl benzoate (Al-PTB-BA), Aluminium benzoate, potassium benzoate, lithium benzoate, sodium I-cinnamate, i-sodium β-naphthoate, njl. Phakathi kwazo, isinyithi se-alkali okanye i-aluminium yetyuwa ye-benzoic acid, kunye ne-aluminium yetyuwa ye-tert-butyl benzoate ineziphumo ezingcono kwaye inembali ende yokusetyenziswa, kodwa ukungafihli kakuhle.

Iiphosphoric acid iityuwa zesinyithi: Izinto eziphilayo zePhosphate ikakhulu zibandakanya iityuwa zephosphate kunye neentsimbi zephosphates kunye nezakhiwo zazo. Njenge-2,2'-methylene bis (4,6-tert-butylphenol) i-phosphine aluminium yetyuwa (NA-21). Olu hlobo lwearhente ye-nucleating luphawulwa kukukhanya okucacileyo, ukuqina, isantya se-crystallization, njl., Kodwa ukusasazeka okungalunganga.

Isiphumo esivela kwi-benzylidene ye-Sorbitol: Inefuthe lokuphucula elubala, ukuqaqamba komphezulu, ukuqina kunye nezinye iipropathi zethemodynamic zemveliso, kwaye iyahambelana ne-PP. Luhlobo lokungafihli okwangoku olwenziwa kuphando olunzulu. Ummeli wenyukliya. Ngomsebenzi olungileyo kunye nexabiso eliphantsi, iye yaba yeyona arhente ye-nucleating iphucukileyo kunye nolona hlobo lukhulu kunye nemveliso enkulu kunye nentengiso ekhaya nakwamanye amazwe. Kukho ikakhulu i-dibenzylidene sorbitol (DBS), ezimbini (p-methylbenzylidene) sorbitol (P-M-DBS), ezimbini (p-chloro-endaweni yebenzal) sorbitol (P-Cl-DBS) njalo njalo.

Indawo yokunyibilika ephezulu yearhente ye-nucleating arhente: Okwangoku, ubukhulu becala kukho i-polyvinyl cyclohexane, i-polyethylene pentane, i-ethylene / i-acrylate copolymer, njl njl.

agent Ummeli wecrystal nucleating:

Injongo yokufumana iimveliso ze-polypropylene ezinomxholo ophezulu wefristal. Uncedo kukuphucula ukuxhathisa kwempembelelo kwimveliso, kodwa ayinciphisi okanye inyuse ubushushu be-deformation yemveliso, ukuze ezi zinto zimbini ziphikisanayo zokuchasana nefuthe kunye nokumelana nobushushu kuthathelwe ingqalelo.

Olunye udidi lungamacangci ambalwa ahlanganisiweyo kunye nesakhiwo seplasi.

Enye yenziwe zii-oxides, iidroksayidi kunye neetyiwa zeedicarboxylic acid kunye nesinyithi seqela IIA letheyibhile yamaxesha. Inokuguqula umlinganiso weefom ezahlukeneyo zekristale kwipolymer yokuguqula i-PP.