Chinodzivirira mhangura kana kuti chinodzivirira mhangura chinhu chinoshandiswa muzvinhu zvepolymer zvakaita semapurasitiki nerabha. Basa rayo guru nderekudzivirira kukwegura kwemaion emhangura kana mhangura pazvinhu, kudzivirira kuora kwezvinhu, kuchinja ruvara, kana kuora kwehunhu hwemakanika kunokonzerwa nekubata mhangura. Chinonyanya kukosha muminda yakaita sewaya, tambo, zvinhu zvekurongedza zvemagetsi, nezvimwewo.
Mhangura nesimbi dzayo (dzakadai sewaya) zvinoshandiswa zvakanyanya mukufambisa magetsi, asi kana mhangura ikasangana zvakananga nezvimwe zvinhu zvepolymer (zvakadai sePVC, polyethylene), inogona kukonzera matambudziko anotevera:
Kuokisijeni kweCatalytic:
Cu2+ chinhu chakasimba chinobatsira pakukonzera kuputsika kwemasero epolymer, kunyanya munzvimbo dzine tembiricha yakakwira uye dzine hunyoro.
Asidhi ngura:
Muzvinhu zvakasanganiswa nehalogen zvakaita sePVC, mhangura inogona kusangana neHCl yakaora kuti ibudise mhangura chloride (CuCl2), zvichiwedzera kukurumidza kuora kwezvinhu (self catalytic effect).
Kuora kwechitarisiko:
Kufamba kwemaion emhangura kunogona kukonzera kuti mavanga egirini kana matema (ngura yemhangura) aoneke pamusoro pechinhu chacho, zvichikanganisa chitarisiko chacho.
Maitiro ekuita kwe deactivator
Zvinodzima simba zvinodzvinyirira migumisiro yakaipa yemhangura nenzira dzinotevera:
Maion emhangura akafukidzwa:
Kana zvabatanidzwa neCu2+, makemikari akagadzikana anoumbwa kuti avhare basa rawo rekugadzira zvinhu (senge macompound ebenzotriazole).
Kupfuudzwa kwemhangura pamusoro:
Gadzira firimu rekudzivirira pamusoro pemhangura kudzivirira kuburitswa kwemaion emhangura (akadai semakemikari ephosphorus).
Kuderedza acidity yezvinhu:
MuPVC, mamwe ma deactivator anogona kudzima HCl inokonzerwa nekuora, zvichideredza ngura yemhangura (senge lead salt stabilizers dzine basa rekudzivirira mhangura).
Madhiraivha emhangura rudzi rwe "Invisible Guardian" muzvinhu zvepolymer zvinowedzera hupenyu hwezvigadzirwa zvakaita semawaya esimbi nekudzivirira basa remhangura rekugadzira zvinhu. Chinhu chikuru chetekinoroji iyi chiri mukuchengetedza makemikari akakodzera uye kupfava kwepamusoro, ukuwo ichienzanisa hushamwari hwezvakatipoteredza uye kushanda zvakanaka kwemari. Mukugadzira waya, fomura yekubatanidza yezvinodzima mashandiro, chinodzora murazvonezvimwe zvinowedzerwa ndizvo zvinoita kuti zvinhu zvirambe zvakavimbika kwenguva refu.
Nguva yekutumira: Kurume-05-2025