Nkawom Silicone rɔba . yɛ ɔfã a ɛso sen biara wɔ . Nneɛma a wɔde yɛ silicon a wɔde yɛ nneɛma . . Ɛyɛ polymer a ɛwɔ molecule a ɛkorɔn a ɛwɔ inorganic . SI–O–SI . Main chain structure ne organic side akuw, a ɛka bom yɛ inorganic ne organic su ahorow nyinaa.
sɛ wɔde toto nea wɔtaa yɛ ho a . Organic rɔba ., Silicone rɔba . ɔwɔ nea eye kyɛn so . Ɔhyew a ɛko tia ., Wim tebea a ɛsɔre tia ., Electrical insulation ., Nnuru a ɛma ɛyɛ den . , ne nipadua mu ahoɔden a ɛnyɛ adwuma . , a ɛma wɔde di dwuma kɛse wɔ . Ɛlektrik ., Ɛlektrɔnik mfiri ., Kar ., aduane, fidua , ne Nneɛma a wɔde yɛ aĩgye . Nnwumayɛbea ahorow.
1. Silicone rɔba a ɛyɛ hyew a ɛyɛ hyew kɛse .
Silicone rɔba . no titiriw na wɔkyekyɛ mu . Ɔhyew a ɛkorɔn a ɛwɔ vulcanized (HTV) mu . ne Ɔdan mu ɔhyew a ɛyɛ mmerɛw (RTV) . ahorow ahorow. No RTV silicone rɔba . wobetumi akyekyɛ mu bio ayɛ no . Condensation-cure . ne Addition-Cure . nhyehyɛe ahorow.
HTV silicone rɔba . Wɔde di dwuma titiriw de yɛ nneɛma ahorow . Vulcanized rɔba afã horow . , te sɛ Automotive sealing nkaa ., Gaskets ., Nhama a wɔde yɛ nhama ., Keyboard Conductive Nneɛma nketenkete . , ne Aduruyɛ mu silicone nsukorade ..
Nea ɛne eyi bɔ abira no, . RTV silicone rɔba . wɔtaa de di dwuma sɛ . Nneɛma a wɔde nkata so ., Nneɛma a wɔde gu nkuku mu . , anaasɛ Nneɛma a wɔde yɛ nkuku . , a ebinom yɛ adwuma sɛ . Rɔba a ɛnyɛ vulcan a ɛnyɛ vulcan . Wɔ akyiri yi processing anaasɛ ahobammɔ nhyehyɛe.
HTV silicone rɔba . Nea ɛka ho ne ahorow pii .: Methyl silicone rɔba (MQ) ., Methyl vinyl silicone rɔba (VMQ, nea wɔde di dwuma kɛse) . , ne Methyl vinyl phenyl silicone rɔba (PVMQ) . , a wonim no sɛ ɛyɛ nea eye sen biara . ɔhyew a ɛba fam . ne Mframa a ɛbɔ a ɛko tia ..
Wɔn mu no, . VMQ . Ɛwɔ vinyl afã nkɔnsɔnkɔnsɔn kakraa bi, na ɛma vulcanization reactivity yɛ kɛse. Ebetumi de ahorow ahorow adi dwuma . Nneɛma a wɔde sa peroxide . na etu mpɔn wɔ ɔkwan a etu mpɔn so . Compression set a ɛko tia . , agyapade a ɛho hia kɛse ma . rɔba afã horow a ɛyɛ adwuma yiye a wɔde vulcan ayɛ . te sɛ O-rings . ne Gaskets a wɔde siw ano ..
Saa ade yi da nneɛma a wɔyɛ no su pa adi, nneɛma a ɛma ɛyɛ mmerɛw sɛ ɛbɛfa mu, na ɛyɛ mmerɛw sɛ ɛbɛyɛ adwuma, na ɛma ɛyɛ nea wɔtaa de di dwuma no mu biako . HTV silicone rɔba . wɔ gua so.
1.1 Nneɛma a ɛde kɔkɔɔ ba wɔ silicone rɔba mu .
wɔ ankasa a wɔyɛ mu . HTV silicone rɔba . , bi Vulcanization a ɛto so abien . Mpɛn pii no, ɛho hia sɛ wɔyɛ adeyɛ no na ama wɔayi peroxide a aka no afi hɔ na wɔama . Crosslinking density . , na ɛnam so ma . Mfiridwuma mu ahoɔden . ne Ahoɔden a ɛyɛ den . firi Vulcanized rɔba afã horow ..
Nanso, wɔ saa adeyɛ yi mu no, ebinom . Silicone rɔba a wɔde yɛ nneɛma . betumi akyerɛ . yellowing . . anaasɛ ɛso atew . Nneɛma a ɛda adi pefee . , a ɛka wɔn a wɔde di dwuma wɔ nnwuma a ɛho tew kɛse te sɛ . aduane, ayarehwɛ , ne Owia ahoɔden a wɔde yɛ nneɛma . nnwuma ahorow.
Nhwehwɛmu kyerɛ sɛ nea ɛde kɔkɔɔ ba no bi ne .:
Di akyire Metal Nneɛma . anaasɛ Nitrate ions (Daa biara nni hɔ⁻) . wɔ raw gum anaa additives, a ɛkanyan yellowing wɔ secondary vulcanization mu;
Peroxide a ɛporɔw . Generating . acetone . , a ɛde kɔ . α-hydroxybutyraldehyde a ɛyɛ nwini . ne Conjugated compound formation .;
No pH a ɛyɛ pɛ . firi Silica a ɛyɛ fufuo . nkɛntɛnso kɛse wɔ yellowing ahoɔden so.
Enti, mpɛn pii no, nkɔso ho nhyehyɛe ahorow no twe adwene si . aduru a wɔde yɛ aduru a wɔfrɛ no raw ., Silica a ɛyɛ fufuo . , ne Nneɛma a wɔde ka ho ..
1.2 Nsusuiɛ a wɔde bɛtu mpɔn wɔ yellowing resistance mu .
Nhwehwɛmufo ahyɛ nyansa sɛ wɔnyɛ pii . Ano aduru a ɛko tia kɔkɔɔ . , te sɛ:
a wɔde di dwuma . Silicone ngo a wɔayɛ no foforo . a ɛyɛ adwuma sɛ abien no nyinaa . Crosslinking Co-Agent . ne Aduru a ɛko tia kɔkɔɔ . bere a vulcanization wɔ hɔ no, sɛ wosiw kɔla a ɛsakra ano bere a ɛma ayaresa no tu mmirika ntɛmntɛm no;
Adwuma a wɔyɛ . Nneɛma a wɔde paste-type bis(2,5-peroxide) ayɛ a ɛyɛ mmerɛw . a ɛwɔ ahoɔden a ɛkɔ soro a ɛma ɛyɛ nea ɛda adi kɛse . Vulcanized rɔba afã horow . ;(https://www.sunlitetek.com/) .
Nsɛm a wɔde ba . Nneɛma a ɛma nneɛma yɛ adwuma wɔ ɔkwan a ɛyɛ mmerɛw so . mu Fumed silica ayaresa . sɛnea ɛbɛyɛ a wobedi nneɛma nketenkete no kɛse so na wɔama apete atu mpɔn;
Sɛ wode ka ho a . Nneɛma a wɔde ka ho a egyina pyrophosphate so . , a ɛma adwumayɛ a ɛko tia kɔkɔɔ no yɛ kɛse a ɛnyɛ nea ɛma ɛyɛ mmerɛw . rɔba ahoɔden a ɛyɛ afrafra ..
Saa akwan yi nyɛ sɛ ɛbɛma . Appearance quality . firi Silicone rɔba a wɔde yɛ nneɛma . , nanso ɛma . Processing Stability . firi Rɔba a ɛnyɛ vulcan a ɛnyɛ vulcan . Wɔ preforming ne secondary vulcanization mu.
2. Awiei .
Wɔ nnansa yi mfe mu no, China de . Organic Silicon Nnwumayɛbea . anya nkɔso ntɛmntɛm, na . Monomer a wɔyɛ no tumi . Reaching saturation. Nnwumakuw atitiriw redan akɔ . Nneɛma a ɛkorɔn . ne Silicone nneɛma a wɔde yɛ adwuma ..
Vulcanized rɔba afã horow . abɛyɛ nkorabata a ɛho hia a ɛyɛ . Silicone rɔba a ɛyɛ fɛ a ɛyɛ fɛ . , a wɔde di dwuma kɛse wɔ . Kar ., adesie, Ɛlektrɔnik mfiri ., ayarehwɛ , ne Ahoɔden Foforo . Nnwumayɛbea ahorow.
Nanso, Rɔba a ɛnyɛ vulcan a ɛnyɛ vulcan . wɔde di dwuma kɛse wɔ . Adhesion ., Nsɔano . , ne Nneɛma a wɔde hyɛ mu ma . wes, a ɛyɛ link a ɛho nhia wɔ . Silicone rɔba a wɔde yɛ nneɛma a wɔde yɛ nneɛma ..
Bere a gua so akwanhwɛ ahorow a ɛfa sɛnea ɛte ne sɛnea ɛyɛ adwuma ho no kɔ so yɛ kɛse no, . yellowing . . ne sɛnea wɔbɛkɔ so akura mu . Nneɛma a ɛda adi pefee . ne Ahoɔden a ɛyɛ den . mu Silicone rɔba a wɔde yɛ nneɛma . Wɔabɛyɛ mfiridwuma ho akwankyerɛ atitiriw a ɛma nneɛma kɔ so yɛ kɛse na wɔde silicone rɔba di dwuma kɛse.
Silicone rɔba . yɛ ɔfã a ɛso sen biara wɔ . Nneɛma a wɔde yɛ silicon a wɔde yɛ nneɛma ..
