Isesengura ry'ibikoresho nyamukuru vy'amabendera ashobora guhinduka ya PVC

Amabendera ya PVC ashobora guhinduka, ni ikintu gikoreshwa cane mu kwamamaza, mu kwerekana ibirori no mu gushaza, arafise ivyiza nyamukuru vy’uko ashobora guhinduka neza cane, akagumaho kandi akaryohera abantu kubona. Urufunguruzo rwo gushika kuri izo kamere ruri mu bikoresho vyavyo bikorana, ahanini bigizwe n’ivyuma vyitwa polyvinyl chloride (PVC) kandi bikozwe biciye ku buhinga bwo gutunganya ibintu vyinshi. Ivyo bikurikira biradondora neza ibiranga ibikoresho nyamukuru vy’amabendera ashobora guhinduka akoresheje ubuhinga bwa PVC bivuye mu nzira zitatu: ibikoresho birimwo, imiterere y’ibikorwa, n’uburyo bwo gutuma ibintu bigenda neza.

1. Igikoresho nyamukuru: Igikoresho ca Polyvinyl Kloride (PVC)

Igishushanyo nyamukuru c’amabendera ashobora guhinduka akozwe mu gikoresho citwa polyvinyl chloride (PVC). PVC ni ikintu gishobora guhinduka ubushuhe gikomoka ku gukorana n’ibindi bihimba vy’umubiri (VCM). Uruhererekane rwayo rw’amamolekule rurimwo amabonde akomeye ya carbone-chlorine, atanga ubushobozi bwayo bwo guhangana n’imiti n’inkomezi z’ubuhinga. Mu gukoresha amabendera, ivyuma vya PVC, nk’ikintu c’ishimikiro, biratanga ubufasha bw’umubiri-kugira ngo ibendera ribe ryiza iyo rifunguwe. Uguhinduka kw’uruzitiro rwayo rw’amamolekule ruringaniye na kwo nyene kuratuma ishobora guhura n’ibigoramye bimwebimwe (nk’akarorero, inkingi z’umubiri canke ibibanza vy’iyerekanwa bigoramye).

Ni vyiza kumenya ko naho PVC isanzwe ikomeye, na yo nyene irashobora gusenyuka kandi ntishobora gushitsa ata guca ku ruhande ibisabwa vyo gupfukama kw’amabendera. Ni co gituma uburyo bwo "guhindura plastique" burakoreshwa kenshi mu guhingura. Ivyo birimwo kwongerako umubare ukwiye w’ibintu bitera amapulasitike (nk’amavuta ya phthalates n’amavuta ya soya ya epoxidé) ku ntungamubiri ya PVC. Ivyo bica bihungabanya zimwe mu nguvu za van der Waals ziri hagati y’iminyororo y’ibihimba vy’umubiri maze bikagabanya ubushuhe bw’uguhinduka kw’ikiyo (Tg) bw’ico gikoresho, bigatuma ico kintu kiva ku gikomeye kikaja ku gihinduka. Iyi PVC yahinduwe iragumya ubushobozi bwo guhangana n’ugusenyuka n’ubushobozi bwo gutunganya vyoroshe nk’ubw’ibara ry’intango mu gihe kandi ishika ku bushobozi ngirakamaro nk’ugupfukama n’ugupfukama.

II. Ibikoresho vy'inyongera bikora: Ibice bihurikiye hamwe bituma umuntu akora neza muri rusangi

Kugira ngo ubumenyi bw’amabendera bube bwiza, igikoresho c’ishimikiro ca PVC akenshi gifatanywa n’ibintu bitandukanye bikora canke ibikoresho vyo hejuru, bikaba bikora igihimba c’umubiri gifise ibice vyinshi.

Ibituma: Kumenya neza igihe kirekire-Uguhangana n'Ikirere

Kubera ko amabendera akenshi agaragara hanze igihe kirekire (nk’amatangazo yo mu mihanda n’ibimenyetso vy’iyerekanwa), imishwarara ya UV, ubushuhe bwinshi, n’ubukonje bwinshi birashobora gutuma iminyororo y’amamolekule ya PVC yononekara bitagoranye (nk’akarorero, gusenyuka kw’amazi), bikaba bituma ihinduka umuhondo, igaca ibice, n’ibindi. Ku bw’ivyo, ibintu bigumya ubushuhe n’ibigumya umuco ni ngirakamaro mu guhingura umuti. Ivyuma bigumya ubushuhe, ahanini ivyuma bigumya ubushuhe bwa calcium-zinc complex (bikunda ibidukikije) canke ivyuma bigumya umunyu w’amabuye y’agaciro (ivy’agaciro), bifata HCl ivuye mu gihe c’ugusubiranamo maze bikabuza uruzitiro gusenyuka. Ivyo bikoresho bifasha umuco guhagarara, harimwo n’ivyo gufata umuco wa UV (nk’ivyo bita UV-531) n’ivyo bifata umuco w’amine bibujijwe (HALS), biratuma ubuzima bw’ico kintu buramba hanze (mu bisanzwe bishika imyaka 3-5) mu kugaragaza canke gufata umuco wa UV canke mu guhagarika uruhererekane rw’imigenderanire y’imigera.

Uguvura ku ruhande: Guhuza ubushobozi bwo gucapura n'uburinzi

Akenshi ibipande vy’amabendera bisaba inyandiko canke ibishushanyo bicapwe, bikaba bisaba ko wino ifata neza cane be n’uko ibara ry’ibara ry’ibara ry’ibara ry’ibara ry’ibara ry’ibara ry’ibara. Kugira ngo ivyo bishoboke, igipande ca PVC gica mu bikorwa vy’ubuvuzi bwa corona (vyongera inguvu zo ku ruhande biciye mu gusohoka kw’umuriro mwinshi) canke kigashirwako amazi-ishimikiye ku wino -ihuriye (nk’igipande c’irangi ry’ivyuma vy’ibara ry’agahama) kugira ngo wino ikomeze kwifatanya n’iyindi kandi ishobore guhangana n’irangi. Ikindi, amabendera amwe amwe y’agaciro kanini-afise igipande co gukingira PVC gica ibibatsi (gifise uburebure bwa 0.05-0.1mm) ku ruhande. Iyi filime ntituma gusa idashobora gukororwa (ibuza gushaza n’ugutabuka ku gishushanyo bitewe n’ugushikana kw’imisi yose) ariko kandi iratuma ishobora guhangana n’amazi n’inkungugu, ivyo bikaba bituma ishobora gukoreshwa mu bidukikije bikomeye.

Gukomeza Ivyuzuza: Gutuma Ugukomera Gukomera

Kugira ngo umuntu ntiyavunike kubera urushe bitewe no gupfukama kenshi, amabendera amwamwe ya PVC ashiramwo ibintu bishobora guhinduka (nk’ifu y’umupira w’amaguru yitwa polytetrafluoroethylene micropowder be n’ibihimba vy’imipira y’umupira w’amaguru yitwa nitrile) canke intsinga zikomeza (nk’insinga z’imipira y’umupira w’amaguru yitwa polyester). Ivyo bikoresho vyuzuye, bishize mu gitereko ca PVC, bikora "micro-buffer structure" itanga umuzigo mu bice vy'imibabaro myinshi y'ugupfukama, gutyo bikaba bituma ubuzima bw'ikintu buramba inyuma yo gusubiramwo gupfukama. (Amakuru y’igerageza yerekana ko amabendera ya PVC ashobora guhangana n’ibipfunsi birenga 5,000 5cm ata guca ibice.)

III. Amabwirizwa yo gutuma ibikoresho bigenda neza: Iterambere ry'ugukingira ibidukikije n'ugukora

Kubera ko isoko ririko rirushiriza gusaba ibikoresho biramvye, amabendera y’ubu ya PVC ashobora guhinduka ariko arategurwa cane kugira ngo ubumara bube buke, uburemere buke, kandi bukore neza. Nk’akarorero, ivyuma bita phthalates, ni ikintu gisanzwe gitera ivyuma, biriko birasubirizwa n’ivyuma bitera ivyuma bitagira ingaruka ku bidukikije nk’ivyuma bita citrates n’ivyuma bita epoxy fatty acid methyl esters kubera ko bishobora gutera ingorane ku buzima. Mu rwego rw’ibituma ibintu biguma bimeze neza, ubuhinga bwo gukora ivyuma bita calcium-zinc burariko burategurwa cane, mu gihe ubuhinga burimwo ivyuma biremerera nk’ivyuma vy’amabuye y’agaciro n’ivyuma vy’amabuye y’agaciro (cadmium) buriko burakurwaho. Abahinguzi bamwebamwe na bo nyene bariko barakoresha ubuhinga bwa nano (nk’ukwongerako ivyuma birwanya imigera vy’umuyagankuba) kugira ngo bahe amabendera ibindi bintu nk’ukwisukura no kurwanya imigera, ivyo bikaba bituma barushiriza kwagura ikoreshwa ryayo.

Mu ncamake, igikoresho nyamukuru c’amabendera ashobora guhinduka ya PVC gishingiye ku ntungamubiri ya polyvinyl chloride yahinduwe, iyo na yo ikaba ihinduka biciye ku bikoresho bihindura amapulasitike. Ivyo birongerezako ibintu bituma ibintu biguma bimeze neza, ibintu bifasha gusukura imbere, be n’ibintu bikora neza, ivyo bikaba bituma haba urutonde rw’ibintu vyose bihuza ubushobozi bwo guhindura ibintu, ubushobozi bwo guhangana n’ibihe, ubushobozi bwo gucapura be n’ubushobozi bwo gukingira. Ivyo bimenyetso bituma iba ihitamwo ry'imbere mu kwamamaza ibimenyetso, guhuza ubushobozi n'igiciro-.