Impembelelo yeeNkqubo ezahlukeneyo zeMveliso kwiNtshukumo yokuSebenza kweNitrile Rubber/Polyvinyl Chloride Insulation Materials

I-rubber ye-nitrile butadiene (NBR) kunye ne-polyvinyl chloride (PVC) zizinto ezimbini ezisetyenziswa ngokubanzi kwi-insulation industry, ngakumbi kwizicelo zombane kunye ne-thermal. Iimpawu zabo ezikhethekileyo zibenza bafaneleke kwiindawo ezahlukeneyo, kodwa ukusebenza kwezi zinto zokukhusela zingahluka kakhulu kuxhomekeke kwinkqubo yokuvelisa. Ukuqonda impembelelo yeendlela ezahlukeneyo zokuvelisa ekusebenzeni kokufakwa kwezixhobo ze-NBR/PVC kubalulekile kubo bobabini abavelisi kunye nabasebenzisi bokugqibela.

Iimpawu ze-insulation ze-NBR / PVC izinto zixhomekeke kakhulu ekuqhubeni kwe-thermal, amandla e-dielectric, kunye nokunyamezela kwizinto ezisingqongileyo ezifana nokufuma kunye nokuguquguquka kweqondo lokushisa. Ezi zakhiwo zichaphazeleka ngokuqulunqwa kwezinto, izongezo, kunye neenkqubo ezithile ezisetyenziswa kwimveliso.

Enye yeenkqubo eziphambili zokwenziwa kwemveliso ezichaphazela ukusebenza kwe-insulation yindlela yokudibanisa. Kule nqanaba, i-polymers yesiseko (i-rubber ye-nitrile kunye ne-polyvinyl chloride) ixutywe kunye neentlobo ezahlukeneyo zokudibanisa, kubandakanywa i-plasticizers, i-stabilizers, kunye ne-fillers. Ukukhethwa kwezongezo kunye nokugxininiswa kwazo kuguqula kakhulu iimpawu zokushisa kunye nombane kwimveliso yokugqibela. Ngokomzekelo, ukongeza i-plasticizers ethile kunokuphucula ukuguquguquka kunye nokunciphisa ukuhanjiswa kwe-thermal, ngelixa iifayili ezithile zinokuphucula amandla omatshini kunye nokuzinza kwe-thermal.

Enye inkqubo ephambili yokuvelisa i-extrusion okanye indlela yokubumba esetyenziselwa ukubumba izinto zokugquma. I-Extrusion ibandakanya ukucinezela umxube wezinto eziphathekayo nge-die ukuze zenze imilo eqhubekayo, ngelixa ukubumba kubandakanya ukugalela izinto kwi-cavity eyakhiwe ngaphambili. Indlela nganye ibangela ukungafani kobuninzi, ukufana, kunye nesakhiwo esipheleleyo se-insulating material. Ngokomzekelo, izinto zokugquma ze-NBR/PVC ezikhutshiweyo zinokuba nokufana okungcono kunye ne-porosity ephantsi xa kuthelekiswa neemveliso ezibunjiweyo, ngaloo ndlela ziphucula ukusebenza kwazo kokugquma.

Inkqubo yokunyanga idlala indima ebalulekileyo kwiimpawu zokugquma irabha yenitrile/ipolyvinyl chloride (NBR/PVC) imathiriyeli. Ukunyanga, okukwabizwa ngokuba yi-vulcanization, kubhekiselele kwinkqubo yokudibanisa i-polymer chain ngokusebenzisa ubushushu kunye noxinzelelo, okubangela ukuba kubekho izinto ezizinzileyo kunye nezizinzileyo. Ubude kunye nobushushu benkqubo yokunyanga buchaphazela iimpawu zokugqibela ze-insulation material. Ukunyangwa okunganeleyo kukhokelela ekudibaneni okungaphelelanga, oko kunciphisa ukuxhathisa kwe-thermal kunye namandla e-dielectric. Ngokwahlukileyo, ukunyangwa ngokugqithisileyo kubangela ukuba izinto eziphathekayo zibe brittle kwaye ziqhekeke, ngaloo ndlela zinciphisa ukusebenza kwayo kokugquma.

Ngaphezu koko, izinga lokupholisa emva kwemveliso lichaphazela i-crystallinity kunye ne-morphology yezinto ze-NBR / PVC. Ukupholisa ngokukhawuleza kunokukhokelela ekwandeni kwezakhiwo ze-amorphous, ezinokuphucula ukuguquguquka kodwa kunokunciphisa ukuzinza kwe-thermal. Ngakolunye uhlangothi, isantya sokupholisa esicothayo sinokukhuthaza i-crystallization, enokuphucula ukuxhathisa ubushushu kodwa ngeendleko zokuguquguquka.

Ngelizwi, iipropati zokugquma izinto ze-NBR / PVC zichaphazeleka kakhulu kwiinkqubo ezahlukeneyo zokuvelisa. Ukusuka kwi-compounding kunye nokubumba ukunyanga kunye nokupholisa, inyathelo ngalinye kwinkqubo yokuvelisa iguqula iimpawu ze-thermal kunye nombane wemveliso yokugqibela. Abavelisi kufuneka baqwalasele ngononophelo le miba ukuze baphucule ukusebenza kwe-insulation ye-NBR/PVC imathiriyeli kwizicelo ezithile. Ngokukhula okuqhubekayo kwimfuno yezinto eziphezulu zokugquma, uphando oluqhubekayo kunye nophuhliso lobugcisa bokuvelisa kubalulekile ekuphuculeni ukusebenza kwe-NBR/PVC izisombululo zokugquma kwiindawo ezahlukeneyo.