Tsawra ai engineer ni, mari ai lam hta shang lawm ai ni, hte hpaji lam hta dawdan ai ni-:
Anhte a shani shagu na hpaji masa hte seng nna bawngban ai lam ni hta, anhte hpe law malawng san ai ga san gaw "Manu kade rai na kun?" rai tim, "Ndai dazik shakap ai n-gang gaw teng sha kade daram na hkra nga na kun?"
Customer law law gaw lawu na zawn re ai lam ni hpe hkrum sha lai wa sai: sample gaw chyam yu ai shaloi hkrak hkrak shinggrup da ai hpe madun dan ai, raitim shata masum tup galaw ngut ai hpang hka (sh) nbung pru hpang wa ai; shing nrai, n-gun ja ai lam gaw masat da ai ra kadawn ai lam ni hpe hkan sa tim, n mai nhtang wa ai indentations ni hpe garan kau ai shaloi mu lu ai. Ndai mabyin masa yawng a rudi gaw, rubber hpaga lam hta ahkyak dik htum ai hkum hkrang arung arai – Compression Set (CS) hta rai nga ai.
Daini, anhte gaw abstract concept ni hta lai nna, molecular chains hte pore structure kaw nna hpang nna, sealing galaw ai lam hpe dawdan ya ai npu na tara ni hpe dawm kau na ga ai.
I. "Compressive Permanent Deformation" hpe bai maram yu ai lam.
Foamed silicone a lam hta, sealing galaw ai atsam gaw, ngang kang ai hte maren sha rai nga ai; sealing galaw ai lam mung, n-gun n rawng ai hpe ninghkap lu ai atsam hte maren sha rai nga ai.
Compressive permanent deformation ngu ai gaw, masat da ai aten ladaw (ga shadawn, 22 h or 72 h) hta, masat da ai n-gun (ga shadawn, 25% or 50%) hte masat da ai n-gun (ga shadawn, 100℃) hta, masat da ai n-gun (ga shadawn, 22 h or 72 h) hta, n-gun rawng ai n-gun hpe n-gun rawng ai hku n-gun rawng ai hpe tsun mayu ai. Ndai parameter a matu manu kaji ai gaw, dai arai a elastic retention rate grau law ai hpe madun nna, hka pru wa na masa mung yawm ai hpe madun ai.
Kalang mi hta ahkyak ai prat tup n bung ai lam byin wa ai shaloi, dai gaw:
Interface stress relaxation: Flange matut mahkai ai shara kaw na clamping n-gun yawm mat nna, kata na n-gun n-gun a lawu de hkrat sum mat ai.
Microchannel byin pru wa ai: pore ni htum mat ai (sh) hkrat sum mat ai majaw, shada da matut mahkai ai hka pru wa ai lam ni byin pru wa ai.
Aten law law gram lajang ra ai: Stress sum mat ai hpe gram lajang na matu, bolt ni hpe ayan ngang ngang jum da ra ai.
II. Deformational Fate hpe dawdan ya ai madung lam mali
Compressive deformation a n-gun atsam gaw, lam langai a majaw n re ai sha, grai sawng ai "systematic engineering" ngu ai ladat hpe madi madun nga ai. Ndai lam hpe anhte gaw laklai ai madang mali hku garan nna, Microscopic kaw nna Macroscopic scale du hkra garan ginhka da ga ai:
1. Arung arai Gene: Hkrang shapraw ai ladat ni a ginsup ai lam
Ndai gaw, silicone raw rubber hte additive system hku nna dawdan ai, nsam galai shai ai lam a kata lam lam rai nga ai.
Raw rubber (base polymer) hpe lata ai lam: Vinyl n-gun hte molecule n-gun garan ai lam gaw crosslinking n-gun hpe hkrak sha shabyin ya ai. Grai n-gun ja ai raw rubber gaw grai sawng ai molecular chain shingjawng ai lam hpe madun dan ai majaw, shingjawng ai shaloi chain ni hpe n-gun shayawm na matu yak hkak shangun ai; dai majaw, prat tup na hkrang nsam gaw grai law hkra byin chye ai.
N-gun jat ai hte crosslinking galaw ai ladat: Vulcanizing tsi ni a hkamja lam hta "ja n-gun rawng ai shara" nga ai. Vulcanizing agent grau law ai gaw ngang kang ai lam hpe jat shangun tim, dai gaw molecular chain ni hpe grai n-gun ja shangun nna, shanhte a n-gun hpe shayawm kau ya lu ai majaw, compressive fatigue hpe ninghkap lu ai atsam hpe n kaja ai hku hkra machyi shangun lu ai.
Foaming agent hpe shingdaw ai lam: Foaming n-gun hpe vulcanization n-gun hte maren sha galaw ra ai. Foaming grai lawan ai hku cross-linking n galaw ai sha byin wa yang, bubble bunghku ni grai n-gun n rawng nna, compression galaw ai shaloi kalang ta rup mat na re; foaming hpe jahkring kau ai aten hta cross-linking grai lawan ai hku byin wa yang, bubbles ni gaw hkum tsup hkra n mai jat wa ai majaw, n hkum tsup ai closed-cell rate byin wa na re.
2. Microstructure: Hkap pat da ai-pore n-gun daw hte n-gun kaba ai garan ginhka ai lam
Ndai gaw, foamed silicone hte solid silicone n bung ai madung majan ginra rai nga ai.
Kaja dik ai masa: N bung ai, n kaja ai-honeycomb hkrang hte hpaw da ai-cell rate grai law ai. Compression hpe galaw ai shaloi, pat da ai cell ni kata na gas gaw Boyle a tara (P1V1=P2V2) hpe madat mara nna, nbung madi shadaw ai lam hpe jaw ya ai majaw, n-gun pru wa ai shaloi cell ni lawan ai hku bai nhtang wa lu na matu karum ya ai.
Defective pores: Pore sizes ni n bung ai rai yang (hkap pat da ai (sh) hpaw da ai pores ni nga ai rai yang), compressive stress gaw kaba dik ai pores ni hta sha madung tawn na re. Ndai n-gun kya ai shara ni plastic deformation (sh) rupture byin wa ai shaloi, sealing cross-section ting a akyu rawng ai compression rate gaw prat tup sum mat na re.
3. Magam bungli galaw ai masa: Thermal hte media-a majaw asak kaba wa ai lam ni
Ndai gaw shinggan lam langai rai nna, on-site hkrat sum ai lam law law a hpang na madung lam rai nga ai.
Thermal-oxidative aging: N-gun ja ai gaw silicone polymer n-gup magap hpe lawan ladan garan kau ya ai. Aten na wa ai hte maren, dai arai a ntsa gaw ngang kang wa nna, kata na cross-linking density galai shai wa ai majaw, grau sawng ai n-gun shayawm ai lam byin wa ai. 150℃hta, shinggyim silicone a nsam galai shai ai lam gaw, nta kata na nbung katsi ai shara hta mu lu ai htam 3–5 daram rai na re.
Compression ratio setting: It is generally recommended that the compression ratio be between 15% and 25%. An excessively high compression ratio (>30%) gaw cell pores ni hpe hkrak sha zingri kau nna, n mai gram lajang lu ai hkum hkrang hkra machyi lam ni hpe byin shangun na re; grai n-gun n law ai compression ratio gaw, kaja ai shawng nnan na sealing ratio n-gun hpe n lu gawgap na re.
4. Hkala nba byin ai lam: Compression galaw ai shaloi hkum hkrang hkrat sum ai lam .
Microscope npu hta, compression hkrat sum ai lam hta, laksan hku nna, lahkam masum lawm ai:
Phase I (Gas Escape): Kalang ta n-gun jat wa ai majaw, pat da ai hka htung kata na gas gaw bubble bunghku kata na micropores hku nna pru mat wa na matu shadut ya ai.
Phase II (Bubble Wall Folding): Bubble bunghku gaw, n-gun shayawm ai lam hte maren sha rai nna, n-gun shayawm ai n-gun a npu hta, prat tup n-gun shayawm ai lam ni byin pru wa ai.
Phase III (Bubble wall rupture): Bubble bunghku gaw, n-gun jat ai maga de dingyang n-gun dat ai majaw, grai n-gun dat ai majaw garan mat ai; makau grup yin na bubble hka htung ni gaw hpawng de nna, macroscopic crack byin wa ai.
III. Product ni hpe lata ai shaloi, byin chye ai hkalem hkalau lam ni hpe koi lu na matu lam matsun
Operator hku nna, anhte gaw, customers ni hpe test report hta ka da ai "values" ni hpe sha myit maju jung na matu n tsun shadut ga ai; de a malai, "teng man ai bungli galaw ai masa hta manu dan ai lam ni hpe" myit maju jung ra ai. Ndai kaw tatut galaw mai ai hpaji jaw ga masum nga ai:
"Shawng nnan na jep joi ai lam" hpe n tsun ai sha, "post-aging" hpe hpyi shawn u.
150℃hta 72 h (sh) 225℃hta 24 h tup asak kaba wa ai hpang lu la ai compression permanent deformation data hpe yu nna, garan jaw ai wa jaw ai hku nna yu u. Nta kata na nbung katsi ai shara hta kaja ai hku galaw lu ai gaw, nbung katsi ai shara hta ngang grin ai lam hpe n lu galaw ai.
"Myit ru myit tsang lam hpe shayawm ya ai" curve hpe jep joi yu u
Compressive prat tup galai shai ai lam gaw n shamu n shamawt ai lam rai nna, myit ru myit tsang lam hpe shayawm ai lam gaw shamu shamawt ai lam rai nga ai. Masa lam ni ahkang jaw ai shaloi, garan jaw ai wa hpe, masat da ai compression rate hta, aten ladaw hta jai lang ai n-gun gara hku hkrat sum mat ai hpe madun ai curve langai mi jaw na matu hpyi shawn ra ai. Grau shim ai slope gaw, grau galu ai sealing service prat hpe madun ai.
Bungli galaw ai masa kaw na ngang kang ai hte n-gun ja ai hpe lu la ai:
N-gun n law ai, n shamu n shamawt ai hku pat da ai (ga shadawn, nhtoi htoi ai jak ni a matu ga nhpu hpe makawp maga ai): N-gun n law ai, n-gun kaba ai -rebound arung arai ni (density 0.35–0.45 g/cm3) hpe lata mai ai.
Hpa majaw nga yang, n-gun ja ai n-gun ja ai hte hpaw da ai cell rate (density: 0.5–0.7 g/cm3) nga ai arung arai ni hpe lang na matu hpaji jaw da ai, n-gun ja ai n-gun ja ai battery packs ni hpe mung jai lang na matu hpaji jaw da ai.
Foam silicone hpaga lam hta mying kaba ai Miwa mungdan na supplier langai hku nna, anhte a manu gaw, sealing strips roll langai hpe sha sa ya ai hta lai nna, grau dam lada ai; shi gaw, prat tup hta "hpaji rawng ai" n-gun rawng ai shingnip shingna hpe nang hpe jaw ya ai hta rai nga ai – dai hpe hkrak tup hkrak re ai hkrang shapraw ai lam hpe grau kaja hkra galaw ai (cross-linking/foaming compatibility hpe grau kaja hkra galaw ai) hte ngang kang ai ladat hpe hkang ai (pore structure hpe langai sha re ai hku galaw ai) hku nna lu la mai ai.
Nang gaw, ultra-n-gun n law ai, n-gun ja ai ultraviolet nhtoi, shing nrai, n-gun ja ai -frequency vibration- zawn re ai, bungli galaw ai masa ni hta htuk manu ai sealing arung arai ni hpe tam ai rai yang, anhte hpe gara aten hta raitim matut mahkai mai ai. Anhte gaw, na a tengman ai n-gun shayawm ai lam hte nbung katsi ai lam ra kadawn ai lam ni hpe hkan nna, laksan hkrang shapraw ai lam hpe tau hkrau tsun dan lu ai, data-driven insights hku nna design- hte seng ai hkrit tsang hpa ni hpe shayawm kau lu na matu nang hpe karum ya lu ai.