Mu kugatta kwa kapiira, okunyigirizibwa okunyigiriza ennyo okugezesebwa kukolebwa okusinga okugezesebwa kw’okukyukakyuka okw’olubeerera okw’okusika. Nga bwe kijja okuteesebwako wansi, ebintu bingi eby’ekirungo kya kapiira bikosa eby’obutonde byakyo eby’okukyukakyuka. Kinaamanyibwa wano nti okunyigirizibwa okw’olubeerera okw’olubeerera n’okukyukakyuka okw’olubeerera bibeera bya njawulo bibiri. N’olwekyo, ekitereeza okunyigirizibwa kw’okunyigirizibwa okw’olubeerera tekitegeeza nti kitereeza okukyukakyuka okw’olubeerera okw’okusika, ne vice versa. Okugatta ku ekyo, ku bintu ebisiba emipiira, okukyukakyuka okw’olubeerera si kuteebereza kulungi kwa puleesa y’okusiba oba okukola okusiba. Ebiseera ebisinga, okugezesa okuwummuza okw’okunyigirizibwa gye kukoma okukolebwa, gye kukoma okulagulwa omulimu gw’okuziyiza ogw’okusiba.

Enkola z’okugezesa zino wammanga zikozesebwa okulongoosa omulimu gw’okukyukakyuka ogw’olubeerera ogwa kapiira. Weetegereze: Ebiragiro bino eby’okugezesa biyinza obutakola mu mbeera zonna. Okugatta ku ekyo, enkyukakyuka yonna esobola okukendeeza ku kukyukakyuka okw’olubeerera mu kunyigirizibwa oba okusika eyinza okukosa eby’obugagga ebirala era tejja kukolebwako mu kiwandiiko.

1. Enkola ya Vulcanization .

Lowooza ku nkozesa ya peroxides nga vulcanizing agents, eziyinza okukola CC cross-linked bonds era bwe kityo okulongoosa okukyukakyuka okw’olubeerera okwa kapiira. Vulcanization ya ethylene propylene rubber ne peroxide esobola okukendeeza ku compression permanent deformation ya rubber. Ebirungi ebiri mu peroxide ku kibiriiti bye bintu ebyangu eby’okukwata perokisayidi n’okukyukakyuka okw’olubeerera okw’olubeerera okw’okunyigiriza kwa kapiira.

2. Obudde n’ebbugumu ly’okuvunda .

Ebbugumu erya vulcanization erya waggulu n’obudde obuwanvu obw’okufuuka vulcanization bisobola okwongera ku ddiguli ya vulcanization n’olwekyo okukendeeza ku compression set ya rubber.

3. Obunene bw’okuyunga (cross-linking density) .

Okwongera ku crosslinking density ya rubber kiyinza okukendeeza obulungi compression permanent deformation ya rubber.

4. Enkola ya Sulfur Vulcanization .

Okusobola okukendeeza ku kukyukakyuka okw’olubeerera okw’ekirungo kya EPDM n’okulongoosa obuziyiza bw’ebbugumu, tusobola okulowooza ku kino 'okukyukakyuka okutono' Vulcanization System (MASS): SULFUR 0.5PHR, ZDBC 3PHR, ZMDC 3PHR, DTDM 2PHR, TMTD3PHR.

Mu W ekika neoprene, okukozesa diphenylthiurea accelerator kiyinza okufuula omupiira nga gulina okunyigirizibwa okutono okukyukakyuka okw’olubeerera, naye weewale okukozesa CTP nga anti-coke agent, wadde nga gusobola okuwanvuya obudde obw’okwokya, naye nga gulina okwonooneka okusingawo ku kunyigirizibwa okw’olubeerera okunyigirizibwa.

Ku mupiira gwa NBR, mu nkola ya vulcanization erongooseddwa, omuwendo gwa sulfur gulina okukendeezebwa, gezaako okukozesa ekibiriiti okuwa omubiri nga TMTD oba DTDM okukyusa ekitundu kya sulphur, elementi za sulphur entono zijja kulongoosa omulimu gw’okunyigirizibwa ogw’olubeerera ogw’okukyukakyuka kwa kapiira. Enkola ya vulcanization ne HVA-2 ne hyposulfuramide esobola okufuula omupiira n’okunyigirizibwa okutono okw’olubeerera.

5. Enkola ya Peroxide Vulcanization .

Okulonda BBPIB peroxide kijja kuwa omupiira okukyukakyuka okulungi okw’olubeerera mu kunyigiriza. Mu nkola za peroxide vulcanization, okukozesa co-crosslinkers kyongera ku butabeera bwa 'unsaturation mu nkola, nga kino nakyo kivaako crosslink density enkulu, kubanga crosslinking ya free radicals ezirina unsaturated bonds kibeerawo mu ngeri ennyangu okusinga okutwala haidrojeni okuva mu njegere ezijjudde. Enkozesa ya co-crosslinkers ekyusa ekika ky’omukutu oguyunga era bwe kityo erongoosa eby’obugagga by’okunyigirizibwa okw’olubeerera eby’ekiziyiza.

6. Oluvannyuma lw’okuvunda .

Waliwo ebiva mu vulcanization mu kiseera ky’enkola ya vulcanization, era enkola ya post-vulcanization ku puleesa y’empewo esobozesa ebivaamu bino okufulumizibwa, bwe kityo ne kiwa omupiira okunyigirizibwa okutono.

7. Fluoroestomer FKM/bisphenol AF Vulcanization .

Ku fluoroelastomers, okukozesa bisphenol vulcanizing agent mu kifo kya peroxide vulcanizing agent kiyinza okuwa kapiira okukyukakyuka okw’olubeerera okwa wansi mu compression.

8. Enkola y’obuzito bwa molekyu .

Mu nkola ya kapiira, okulonda kwa kapiira n’obuzito bwa molekyu obunene obwa wakati kuyinza okukendeeza obulungi okunyigirizibwa okw’olubeerera okwa kapiira.

Ku mupiira gwa NBR, omupiira ogulina obuzito bwa mooney omungi gulina okukozesebwa, ekiyinza okufuula omupiira nga gunyigirizibwa obutono ogw’olubeerera.

9. Neoprene .

W Ekika kya neoprene kirina okunyigirizibwa okutono okw’olubeerera okusinga G type neoprene.

10. EPDM .

Okufuula omupiira nga gulina okunyigirizibwa okutono okw’olubeerera, gezaako okwewala okukozesa omupiira gwa EPDM nga gulimu obutafaali bungi.

11. NBR .

NBR, nga eno emulsion polymerized ne calcium chloride nga coagulant, ebiseera ebisinga eba n’okunyigirizibwa okutono.

Ku mupiira gwa NBR, bw’oba ​​oyagala okussa essira ku kunyigirizibwa kwayo okw’olubeerera okukyukakyuka, olwo gezaako okulonda ebika ebirina amatabi amangi n’okuzing’amya enjegere ennene oba ebika ebirina ekirungo kya acrylonitrile ekitono.

12. Omupiira gwa ethylene-acrylate .

Ku AEM Rubbers, peroxide vulcanizing agents zisobola okuwa compression set entono okusinga diamine vulcanizing agents.

13. Abakola ebirungo ebifaanagana ebisinziira ku resin .

Weewale okukozesa ebirungo ebifaanagana (resin-based homogenizers) mu birungo bya kapiira, kubanga kino kyongera ku kunyigirizibwa kw’ekirungo.

14. Ebijjuza .

Okukendeeza ku kujjuza, ensengekera n’obuwanvu obw’okungulu obw’okungulu obw’ekijjuza (okwongeza obunene bw’obutundutundu) ebiseera ebisinga kijja kukendeeza ku kunyigiriza. Mu kiseera kye kimu, okwongera ku nkola y’okungulu kw’ekijjuza nakyo kisobola okulongoosa obuziyiza bw’okunyigirizibwa (compression set resistance) bw’ekirungo.

15. Silika .

Lower silica filler mu compound ejja kukendeeza ku compression set. Okusobola okuba n’ekintu ekinyigiriza ekitono, kyetaagisa okwewala okujjuza silika okungi. Singa obungi bw’okujjuza buba waggulu okusinga ebitundu 25 (ku buzito), okukyukakyuka okw’olubeerera okw’ekirungo kino kufuuka kinene.

16. Ekirungo ekiyunga Silane .

Okulowooza ku nkozesa ya silane coupling agent mu bungi bw’okujjula kwa silika etonnya, okunyigirizibwa okw’olubeerera okw’ekizigo kuyinza okukendeezebwa. Silane coupling agent esobola okukendeeza ku compression permanent deformation of silica filled rubber, era n’okukendeeza ku compression permanent deformation of silicate type filler nga ebbumba, talcum powder ne other filled rubber.

17. Abakola obuveera .

Okukendeeza ku bungi bw’okujjuza kwa pulasitiika mu kapiira kijja kutera okukendeeza ku kunyigirizibwa okw’olubeerera okwa kapiira.