Isishwankathelo solwazi lokusetyenziswa kwee-PVC impact modifiers

(1) I-CPE

I-polyethylene ekhlorini (CPE) yimveliso egutyiweyo ye-chlorination exonxiweyo ye-HDPE kwisigaba samanzi. Ngokunyuka kwenqanaba le-chlorination, i-HDPE eyayikhlorini ekuqaleni iba yi-elastomer engabonakaliyo. I-CPE esetyenziswa njenge-agent yokuqinisa ngokubanzi inomxholo we-chlorine oyi-25-45%. I-CPE inemithombo eyahlukeneyo kunye namaxabiso aphantsi. Ukongeza kwisiphumo sayo sokuqinisa, ikwanayo nokumelana nokubanda, ukumelana nemozulu, ukumelana nomlilo, kunye nokumelana neekhemikhali. Okwangoku, i-CPE yeyona modifier iphambili eTshayina, ngakumbi kwimveliso yeepayipi ze-PVC kunye neeprofayili, kwaye uninzi lweefektri zisebenzisa i-CPE. Isixa esongeziweyo ngokubanzi singama-5-15 amacandelo. I-CPE ingasetyenziswa kunye nezinye ii-agent zokuqinisa, ezifana nerabha kunye ne-EVA, ukufezekisa iziphumo ezingcono, kodwa izongezo zerabha azimelani nokwaluphala.

(2) I-ACR

I-ACR yi-copolymer yee-monomers ezifana ne-methyl methacrylate kunye ne-acrylic ester. Yeyona modifier ingcono kakhulu eyenziwe kwiminyaka yakutshanje kwaye inokunyusa amandla empembelelo yezinto izihlandlo ezininzi. I-ACR yeye-modifier yempembelelo yesakhiwo se-core-shell, equlathe igobolondo elenziwe yi-methyl methacrylate ethyl acrylate polymer, kunye ne-elastomer yerabha eyenziwe ngokudityaniswa ne-butyl acrylate njengecandelo le-core chain elisasazwa kumaleko angaphakathi ee-particles. Ifanelekile ngokukodwa ekuguqulweni kwempembelelo kweemveliso zeplastiki ze-PVC zokusetyenziswa ngaphandle, ukusebenzisa i-ACR njenge-modifier yempembelelo kwiiprofayili zomnyango kunye neefestile zeplastiki ze-PVC ineempawu zokusebenza kakuhle kokucubungula, umphezulu ogudileyo, ukumelana nokuguga okuhle, kunye namandla aphezulu ekona xa kuthelekiswa nezinye ii-modifier, kodwa ixabiso liphezulu malunga nesithathu kune-CPE.

(3) i-MBS

I-MBS yi-copolymer enee-monomers ezintathu: i-methyl methacrylate, i-butadiene, kunye ne-styrene. Ipharamitha yokunyibilika ye-MBS iphakathi kwama-94 kunye nama-9.5, esondele kwipharamitha yokunyibilika ye-PVC. Ke ngoko, ihambelana kakuhle ne-PVC. Eyona nto iphambili kukuba emva kokongeza i-PVC, inokwenziwa ibe yimveliso ecacileyo. Ngokubanzi, ukongeza iinxalenye ezili-10-17 kwi-PVC kunokunyusa amandla ayo empembelelo ngamaxesha ama-6-15. Nangona kunjalo, xa ubungakanani be-MBS bongeziweyo budlula iinxalenye ezingama-30, amandla empembelelo e-PVC ayancipha ngokwenene. I-MBS ngokwayo inomsebenzi omhle wempembelelo, ukubonakala okuhle, kunye nokudluliselwa okungaphezulu kwama-90%. Ngelixa iphucula ukusebenza kwempembelelo, ayinampembelelo ingako kwezinye iipropati ze-resin, ezinje ngamandla okutsalwa kunye nokwandiswa ngexesha lokuphumla. I-MBS ibiza kakhulu kwaye isetyenziswa rhoqo kunye nezinye izinto eziguqula impembelelo ezifana ne-EAV, i-CPE, i-SBS, njl. I-MBS inokumelana nobushushu okubi kunye nokumelana nemozulu, okwenza ukuba ingafaneleki ukusetyenziswa ngaphandle ixesha elide. Ngokuqhelekileyo ayisetyenziswa njengesiguquli sempembelelo ekuvelisweni kweeprofayili zeplastiki zomnyango kunye neefestile.

(4) i-SBS

I-SBS yi-copolymer yebloko ye-ternary ye-styrene, i-butadiene, kunye ne-styrene, ekwaziwa ngokuba yirabha ye-thermoplastic styrene butadiene. Yeyama-elastomers e-thermoplastic kwaye isakhiwo sayo sinokwahlulwa sibe ziintlobo ezimbini: inkwenkwezi efana ne-linear. Umlinganiselo we-styrene kwi-butadiene kwi-SBS ikakhulu yi-30/70, 40/60, 28/72, kunye ne-48/52. Isetyenziswa kakhulu njenge-impact modifier ye-HDPE, PP, kunye ne-PS, ene-dosage ye-5-15 parts. Umsebenzi ophambili we-SBS kukuphucula i-impact resistance yayo yobushushu obuphantsi. I-SBS inokumelana nemozulu embi kwaye ayifanelekanga kwiimveliso zokusetyenziswa ngaphandle ixesha elide.

(5) I-ABS

I-ABS yi-ternary copolymer ye-styrene (40% -50%), i-butadiene (25% -30%), kunye ne-acrylonitrile (25% -30%), esetyenziswa kakhulu njengeplastiki yobunjineli kwaye ikwasetyenziselwa ukuguqulwa kwempembelelo ye-PVC, eneziphumo ezilungileyo zokuguqulwa kwempembelelo kubushushu obuphantsi. Xa ubungakanani be-ABS obongeziweyo bufikelela kwiindawo ezingama-50, amandla empembelelo ye-PVC anokulingana nalawo e-ABS ecocekileyo. Ubungakanani be-ABS obongeziweyo ngokubanzi ziinxalenye ezi-5-20. I-ABS inokumelana nemozulu embi kwaye ayifanelekanga ukusetyenziswa ngaphandle ixesha elide kwiimveliso. Ngokuqhelekileyo ayisetyenziswa njengesiguquli sempembelelo kwimveliso yeeprofayili zomnyango kunye neefestile zeplastiki.

(6) I-EVA

I-EVA yi-copolymer ye-ethylene kunye ne-vinyl acetate, kwaye ukungeniswa kwe-vinyl acetate kutshintsha ubukrelekrele be-polyethylene. Umxholo we-vinyl acetate wahlukile kakhulu, kwaye i-refractive index ye-EVA kunye ne-PVC yahlukile, okwenza kube nzima ukufumana iimveliso ezibonakalayo. Ke ngoko, i-EVA idla ngokusetyenziswa kunye nezinye ii-resin ezichasene nempembelelo. Ubungakanani be-EVA eyongeziweyo bungaphantsi kwe-10 parts.