Rubber active agent leyi tlhelaka yitiveka tani hi vulcanizing active agent. Nchumu lowu nga riki wa ntumbuluko kumbe wa ntumbuluko lowu tirhisiwaka ku endla leswaku vulcanization accelerator yi tirha. Swinga kurisa vuswikoti bya accelerator, swihunguta nhlayo ya accelerator, naswona swihunguta nkarhi wa vulcanization. Vunyingi bya swiengeteri leswi nga riki swa ntumbuluko i ti metal oxides, ti hydroxides na ti basic carbonates, ku fana na zinc oxide, lead oxide, calcium hydroxide, lead carbonate, na swin’wana, nchumu wa nkoka swinene eka swiengeteri swa organic i ti fatty acids, ku landzela ti amines, swisibi, na swin’wana swo fana na stearic acid, dibutyloleic acid amine, zinc stearate, etc. Mpimo wo angarhela wu le hansi ka 5% wa ntiko wa rhaba.

Swiengeteri Swa Raba: Swihlawulekisi Swa Vuxokoxoko, Swipfuno Ni Ku Tirhisa

1. Okisayidi ya Zinc (ZnO) .

Miako:

• Powder yo basa, yo pfumala nun’hwelo leyingana specific gravity yale henhla (5.6 g/cm3).

• Nhlayo ya ku n’oka: 1,975°C; xikombiso xa ku tlhelela endzhaku: 2.008–2.029.

• Ku angula ka le henhla tani hi xitirhisiwa xa vulcanization activator.

• UV-blocking na switirhisiwa swa antimicrobial.

Swipfuno:

• Swi hatlisisa sulphur vulcanization (yi hunguta nkarhi wo horisa hi 20–30%).

• Ku antswisa swivumbeko swa michini (ku tiya ka ku tsana +15–25%, ku leha loko ku tshoveka +10–15%).

• FDA-yi pfumeleriwile eka swikombelo swa ku tihlanganisa na swakudya (21 CFR 172.480).

• A swi onhi mbango (a swi na chefu, swi nga ha tirhisiwa nakambe).

Swikombelo:

• Mathayere: Mintsumbu ya mathayere ya radial leyi nga na mabandhi ya nsimbi (yi antswisa ku namarhela exikarhi ka rhaba na nsimbi).

• Swiambalo swa milenge: Swihlanganisi swa le handle (swi antswisa ku tiya ka ku rhurhumela, ASTM D5963: ku lahlekeriwa hi 50–80 mm3).

• Vutshunguri: Magilavu ​​ya vuhandzuri (nsirhelelo wa switsongwatsongwana, ASTM E2149).

• Swinamarheti: Ku hlanganisiwa ka rhaba kuya eka nsimbi (swi engetela matimba ya peel hi 30–40%).

2. Resini ya Phenolic

Miako:

• Polymer ya thermosetting leyingana crosslink density yale henhla.

• Ku tiya ka kuhisa: Ku tirhisiwa loku yaka emahlweni kuya fika eka 180°C (ku tsekatseka ka 250°C).

• Ku tiya ka le henhla (modulus: 2–4 GPa) na ku tiya ka dimensional.

• Ku lwisana na tikhemikhali eka ti acid, ti bases na ti solvents.

Swipfuno:

• Yinyika ku tiyisisiwa ka xivumbeko (yi engetela ku tiya hi 10–20 Shore A).

• Xitirhisiwa xo sivela malangavi (UL94 V-0 rating handle ka swiengeteri swa halogen).

• Swi durha loko swi pimanisiwa na ti thermoplastics to hlawuleka.

• Tisisiteme to horisa leti cinciwaka (acid-catalyzed kumbe heat-activated).

Swikombelo:

• Mathayere: Swihlanganisi swa le tlhelo (swi antswisa ku tiya ka ku tsemiwa, ASTM D624).

• Mabandhi ya Tiindasitiri: Mabandhi yo fambisa eka tindzhawu letingana mahiselo yale henhla (xikombiso, swimilani swa semende).

• Switirhisiwa swa Friction: Ti brake pads (ti hlayisa coefficient ya friction eka 0.35–0.45 ehansi ka 200°C).

• Foundry: Core sand binders (swihunguta ku cinca ka gasi hinkarhi wa ku hoxa).