Wakiilka firfircoon ee caagga ah sidoo kale loo yaqaan wakiilka firfircoon ee vulcanizing. Walax aan organic ama organic ah loo isticmaalo in laga dhigo dardar vulcanization firfircoon. Waxay sare u qaadi kartaa awoodda xawaaraha, yaraynaysaa xadiga xawaaraha, waxayna gaabin kartaa wakhtiga vulcanization. Inta badan waxyaabaha lagu daro inorganic waxaa ka mid ah birta oxides, hydroxides iyo kaarboonaysiinta aasaasiga ah, sida zinc oxide, lead oxide, calcium hydroxide, lead carbonate, iwm, waxa ugu muhiimsan ee lagu daro organic waa fatty acids, oo ay ku xigto amines, saabuun, iwm sida stearic acid, dibutyloleic acid amine, zinc stearate waa ka yar yahay 5% qaadashada miisaanka guud, iwm.

Ku-darka caagga ah: Guryaha faahfaahsan, Faa'iidooyinka, iyo Codsiyada

1. Zinc Oxide (ZnO)

Guryaha:

• Caddaan, budo aan ur lahayn oo leh cuf-jiid gaar ah oo sarreeya (5.6 g/cm³).

• Barta dhalaalka: 1,975°C; Tusmada dib-u-celinta: 2.008-2.029.

• Falcelinta sare ee firfircoonida vulcanization.

• UV-blocking iyo sifooyinka antimicrobial.

Faa'iidooyinka

• Waxay dedejisaa vulkanization sulfur (waxay yaraynaysaa wakhtiga daawaynta 20-30%).

• Waxay hagaajisaa sifooyinka farsamada (xoogga xajinta + 15-25%, dhererka nasashada + 10-15%).

• FDA-ay ansixisay codsiyada xiriirka cuntada (21 CFR 172.480).

• Deegaanka u fiican (aan ahayn sun, dib loo warshadayn karo).

Codsiyada:

• Taayirada: Bakhtiga taayirrada shucaaca ee birta ku xidhan (waxa ay kor u qaadaysaa ku dhegganaanta caagga iyo birta).

• Kabaha: Kabaha dibadda (waxay hagaajiyaan caabbinta nabarrada, ASTM D5963: 50-80 mm³ khasaare).

• Caafimaadka: galoofyada qalliinka (ka ilaalinta jeermiska, ASTM E2149).

• Xabagta: Isku xidhka birta iyo birta (waxay ku kordhinaysaa xoogga diirka 30-40%).

2. Xabagta phenolic

Guryaha:

• polymer-ku-kulul leh oo leh cufnaanta isku-goysyada sare.

• Iska caabbinta kulaylka: Isticmaal joogto ah ilaa 180°C (isku xidhka 250°C).

• Qalafsanaan sare (modul: 2-4 GPA) iyo xasilloonida cabbirka.

• Caabbinta kiimikaad ee asiidhka, saldhigyada, iyo dareerayaasha.

Faa'iidooyinka

• Waxay bixisaa xoojinta qaabdhismeedka (waxay ku kordhisaa adkaanta 10-20 Shore A).

• Dab-demiska (UL94 V-0 oo aan lahayn wax lagu daro halogen).

• Kharash-ku-ool ah marka loo eego heerkulbeegyada takhasuska leh.

• Nidaamyada daaweynta la beddeli karo (ashito-catalyzed ama kulayl-firfircoon).

Codsiyada:

• Taayirada: Xeryahooda darbiga (waxay hagaajiyaan iska caabbinta jarista, ASTM D624).

• Suunka Wershadaha: Suumanka wareejinta ee jawiga heerkulka sare leh (tusaale, dhirta sibidhka).

• Qalabka jajabinta: suufka bireega (waxay ilaalisaa isku-dhafka isku-dhafka 0.35-0.45 ee hoos yimaada 200 ° C).

• Aasaaska: Xirayaasha ciidda xudunta u ah (waxay yaraynaysaa horumarka gaaska inta lagu jiro tuurista).