一,Cell hkrang masa lam ni
1.Cell structure n nga ai (n bung ai n bung ai, co-bubble)
Dai hpang, n-gun ja ai cell shara ni hte n-gun ja ai cell shara ni hpe mu lu ai, n bung ai garan ginhka ai lam ni nga ai, dai gaw lata hkam sha lam hte compression rebound hpe hkra machyi shangun ai.
Lam law law a majaw byin pru wa ai.
1)Unven mixing: Ndai gaw madung dik htum lam re. Dai foaming agent hte vulcanizing agent hpe rubber compound hta n bung ai hku garan ginhka ai majaw, shara nkau mi hta foaming agent a grai law ai n-gun hpe lu la nna, bubble kaba ni byin pru wa ai.
2) Rubber compound a plasticity: Rubber compound gaw grai n-gun ja ai (plastic n law ai), n-gun n rawng ai, bubble rawt jat galu kaba wa na hpe ninghkap lu ai atsam kaba ai majaw, n bung ai size ni a cell ni hpe galaw na matu loi ai. Rubber compound gaw grai n-gun ja ai rai yang, bubble bunghku ni a n-gun gaw n hkum tsup nna, shanhte gaw hpawng de na masa nga ai.
3) vulcanization hte foaming speed lapran: Foaming speed gaw vulcanization speed hta grau kaba ai shaloi, bubbles ni gaw rawt jat galu kaba wa na aten law law nga ai, dai majaw n bung ai lam byin pru wa ai. vulcanization speed gaw foaming speed hta grau kaba ai shaloi, rubber compound gaw aten garai n du yang set galaw nna, bubbles ni gaw hkum tsup hkra n mai rawt jat wa ai majaw, n law htum foaming hte density grai law ai.
N kaja ai n-gun rawng ai ladat: Rubber compound hpe n-gun n rawng ai shara kaw tawn da ai majaw, hka lim ai aten hta grai galu ai hka lwi ai lam hte gas shinggyin la lu ai.
2. N law ai (sh) grai law hkra foaming n-gun (density kaw na n-gun n rawng ai)
Mabyin: Dai product density gaw grai li ai (sh) grai n-gun n law ai hte grai n-gun ja ai, design value kaw na pru mat wa nna, n-gun gaw standard hte n htap htuk ai.
Lam law law a majaw byin pru wa ai.
1)Faming agent a n teng n man ai tsi: N tara ai hku hkam la ai (sh) foaming agent hkum nan n kaja mat sai.
2)N-gun n rawng ai ladat ni: Temperature: Mold temperature grai n law ai, foaming agent a decomposition gaw n law ai; Mold temperature grai law ai rai yang, foaming agent gaw kalang ta n-gun ja ai hku hten za mat na re, dai gaw gas hpe rubber compound hku nna hprawng mat wa ai (sh) daw kau ya lu ai.
3) Pressure: N-gun n-gun grai law ai majaw, bubble ni a rawt jat galu kaba wa ai hpe pat shingdang ya ai.
. Hpang jahtum na rubber compound hpe shinggyin tawn da ai: Foaming agent a shamu shamawt ai lam (sh) n-gun n rawng ai tsi a shamu shamawt lam gaw, shinggyin tawn ai aten hta yawm mat ai.
3. N hpaw ai hka htung ni hte pat da ai hka htung ni a ratio gaw n bung ai
Byin nga masa lam:
1)Htung htum ai cell ni: Dai arung arai gaw kaja ai bai nhtang wa ai raitim, grai yak ai zawn hkam sha ai, prat tup na matu n-gun kaba ai compression set nga ai.
2)Hka htung law law nga ai: Dai product gaw grai n-gun n rawng ai raitim, hkam sharang ai lam n kaja ai, sponge zawn, n-gun n rawng ai hte n-gun n rawng ai.
Lam law law a majaw byin pru wa ai.
Rubber compound n-gun: Rubber compound a kahkyin gumdin lam (gel n-gun) gaw ahkyak dik rai nga ai. N-gun ja ai, bubble bunghku hpe daw kau na matu n loi ai, pat da ai cell ni hpe galaw na matu loi ai. N-gun n law ai hte hpaw da ai hka htung ni hpe hpaw ya lu ai.
Foaming and vulcanization balance: Lahta na hte maren, vulcanization speed gaw foaming lawan ai hta loi mi lawan ai, dai gaw bubble bunghku hpe ngang grin hkra galaw ya nna, pat da ai cell ni hpe hpaw ya ai.