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Oli wano: Ewaka » Ebintu ebikolebwa » Ebirungo Ebigattibwa mu Kapiira

Ekirungo ekikola emipiira era ekimanyiddwa nga vulcanizing active agent. Ekintu ekitali kiramu oba ekiramu ekikozesebwa okufuula ekyuma ekisitula okuzimba (vulcanization accelerator) okukola. Kisobola okutumbula obusobozi bwa accelerator, okukendeeza ku bungi bwa accelerator, n’okukendeeza ku budde bw’okukola vulcanization. Ebisinga ku bikozesebwa ebitali biramu bye bikozesebwa mu kugatta ebyuma, hayidirokisayidi ne basic carbonates, nga zinc oxide, lead oxide, calcium hydroxide, lead carbonate, n’ebirala, ekisinga obukulu mu birungo ebiramu ye fatty acids, ne bigobererwa amines, ssabbuuni, n’ebirala Nga stearic acid, dibutyloleic acid amine, zinc stearate, n’ebirala Ebipimo eby’awamu biba bitono okusinga Ebitundu 5% ku buzito bwa kapiira.

Ebirungo Ebigattibwa mu Kapiira: Ebintu Ebikwata ku Bulijjo, Ebirungi, n’Ebikozesebwa

1. Zinki Okisayidi (ZnO) .

Eby'bwanannyini:

  • Pawuda enjeru, atalina kawoowo ng’alina amaanyi amangi (5.6 g/cm³).

  • Ekifo ky’okusaanuuka: 1,975°C; omuwendo gw’okuzimbulukuka: 2.008–2.029.

  • Reactivity enkulu nga vulcanization activator.

  • Ebintu ebiziyiza UV n’okulwanyisa obuwuka.

Ebirungi:

  • Yanguya sulphur vulcanization (ekendeeza ku budde bw’okuwona ne 20–30%).

  • Alongoosa eby’ebyuma (amaanyi g’okusika +15–25%, okuwanvuwa ku kumenya +10–15%).

  • FDA-ekkiriziddwa okukozesebwa mu kukwatagana n’emmere (21 CFR 172.480).

  • Tezikuuma butonde (tezirina butwa, ziddamu okukozesebwa).

Okusaba:

  • Emipiira: Emirambo gy’emipiira egya radial egy’omusipi egy’ekyuma (eyongera okunywerera wakati wa kapiira n’ekyuma).

  • Engatto: Ebirungo eby’ebweru (bilongoosa okuziyiza okunyiga, ASTM D5963: 50–80 mm³ okufiirwa).

  • Obusawo: Ggalavu z’okulongoosa (okukuuma obuwuka, ASTM E2149).

  • Ebisiiga: Okukwatagana kwa kapiira ku kyuma (kyongera ku maanyi g’ebikuta ne 30–40%).

2. Ekirungo kya phenolic resin .

Eby'bwanannyini:

  • Polymer enyweza ebbugumu nga erina density y’okusalasala enkulu.

  • Okugumira ebbugumu: Okukozesa obutasalako okutuuka ku 180°C (250°C ezitasalako).

  • Obukakanyavu obw’amaanyi (modulus: 2–4 GPa) n’okutebenkera kw’ebipimo.

  • Okuziyiza eddagala eri asidi, base, n’ebizimbulukusa.

Ebirungi:

  • Ewa okunyweza enzimba (eyongera ku bugumu ne 10–20 Shore A).

  • Eziyiza ennimi z’omuliro (UL94 V-0 rating nga temuli bikozesebwa bya halogen).

  • Ekendeeza ku nsimbi bw’ogeraageranya n’obuveera obw’enjawulo obw’ebbugumu.

  • Enkola z’okuwonya ezisobola okulongoosebwa (acid-catalyzed oba heat-activated).

Okusaba:

  • Emipiira: Ebirungo ebiri ku bbali (bilongoosa okuziyiza okusala, ASTM D624).

  • Emisipi gy’amakolero: Emisipi egy’okutambuza ebintu egy’obutonde obw’ebbugumu eringi (okugeza, amakolero ga seminti).

  • Ebikozesebwa mu kusikagana: Paadi za buleeki (zikuuma omugerageranyo gw’okusikagana ku 0.35–0.45 wansi wa 200°C).

  • Foundry: Core sand binders (zikendeeza ku nkula ya ggaasi mu kiseera ky’okusuula).


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