Ka piki anō te utu POE?

Hei tētahi o ngā rauemi whakapakari e whakamahia whānuitia ana, kāore e kore ka whakararuraru tēnei āhuatanga i ngā kamupene whakarerekētanga. Ko te kaha me te pakari ngā tohu mahi ā-mīhini nui e rua, nō reira ko te whakatikatika whakapakari kirihou te huarahi matua o te whakatikatika kirihou, ā, i ēnei rā ko te Kaha me te pakari ngā tohu mahi ā-mīhini nui e rua, nō reira ko te whakatikatika whakapakari kirihou te huarahi matua o te whakatikatika kirihou, ā, i ēnei rā ko te tāpiri i te kaihopu whakapakari tonu te huarahi tika me te whai hua ki te whakapakari rauemi.

Nō reira, i tua atu i te whakamahinga o te whakapakari elastomer, he aha atu ngā kōwhiringa? I tēnei rā ka arahina koe e au ki te whakarite, ki te whakarerekētanga whakapakari, he aha ngā whakaaro ka taea.

Ka taea te wehewehe i ngā matū whakapakeke e whakamahia whānuitia ana kia rua ngā wāhanga: ko ngā matū whakapakeke hohe me ngā matū whakapakeke kore hohe. Ko ērā kei roto i ō rātou mekameka ngota ngā rōpū hohe ka taea te tauhohe ki te kapia matrix, ka taea te hanga i tētahi hanganga whatunga me te whakanui ake i tētahi wāhanga o te matū whakapakeke kore-tauhohe he akomanga o ngā matū whakapakeke e pai ana te hototahi ki te kapia turanga, engari kāore e whai wāhi ki te tauhohenga matū.

Ngā rauemi whakapakari elastomeric

Tata ki ngā rauemi ngāwari katoa ka taea te whakamahi hei whakapakari i ngā rauemi pakarukaru, ko te mea nui ko te hototahitanga i waenga i ngā wāhanga maha-wāhanga, me te pūnaha whakapakari hototahitanga pai hei whakatutuki i te kaupapa whakapakari e hiahiatia ana, ki te kore, ka kore e whai hua. Ko ngā whakapakari elastomeric e whakamahia whānuitia ana ka whakarōpūtia e ō rātou pāmahana whakawhiti karāhe teitei, iti rānei.

(1) Kapia ātete pānga teitei
Pērā i te polyethylene chlorinated (CPE), te copolymer methyl methacrylate-butadiene-styrene (MBS), te copolymer acrylate (ACR), te copolymer poraka styrene-butadiene (SBS), te SBS hauwai (SEBS), te POE, te EVA, me ētahi atu.
(2) Rapa ātete pānga teitei
Pērā i te rapa ethylene propylene (EPR), EPDM, NBR, NR, SBR, BR, CR, me ētahi atu.
Hei tāpiritanga, ki te whakamahia te TPU hei whakakaha mō te PA66, ka tino pai ake te kaha pānga o te hiato PA66/TPU, ā, ka iti noa te hekenga o ngā āhuatanga kume o te hiato. Ka eke ngā āhuatanga ā-pūkaha ki te taumata teitei ina 5% te nui o te tāpiri o te TPU. Kua heke te kaha tioata mā te 50%, e tohu ana he mārama te pānga whakakaha o te pūnaha ki te PA66.

Te whakarōpūtanga mā te hanganga o roto o te elastomer.

(1) Te akomanga elastomer kua whakaritea i mua
He pūmua anga-matua ēnei, he matua elastomer ngohengohe, me te pūmua anga pāmahana whakawhiti karāhe teitei. Pērā i te MBS, ACS, MABS, me ētahi atu.
(2) Te akomanga elastomer kāore i te whakaritea i mua
He pūhui kupenga tēnei, ā, ka whakarerekētia tōna pānga e te tikanga mahi whakarewa, pērā i te CPE, te EVA, me ētahi atu.
(3) Te akomanga elastomer whakawhiti

Kei waenganui te hanganga i te elastomer kua whakaritea i mua me te elastomer kāore i whakaritea i mua, pērā i te ABS, me ētahi atu.

Ngā rauemi pakari kua whakapakeketia

Ko ngā rauemi whakapakeke mārō kore-waro (RIF), ko te nuinga he whakakī kore-waro tino pai me ngā whakakī motuhake.

Ko te whakakī inorganic tino pai e pā ana ki te rahi matūriki i waenga i te 0.1-5μm, ko te pānga whakarerekētanga o taua whakakī me te pikinga o te tāpiri whakakī, ko te kaha kume me te kaha pānga o te pūnaha whakaranu ka heke maeneene, kāore i rerekē, ka piki ake rānei, ā, ka piki haere tonu ētahi atu āhuatanga.

Ko ngā whakakī motuhake ko ngā muka nui (CF), ngā whakakī ngira/porowhita, ngā tote konganuku whenua kawakore me ngā kohuke whenua onge, me ētahi atu.

Ngā muka-rahi pērā i ngā muka waro, ngā muka boron, ngā muka quartz, ngā muka waro, ngā nanotube waro me ngā momo ūkui. Me whakahaere te horapa o ngā muka-rahi i roto i ngā polymer mā roto i ngā tikanga tino motuhake me te whai kiko.

He whakakī rite ki te ngira pērā i te wollastonite rite ki te ngira, he pānga whakapakari tōna.

Ko te tikanga, ka rongoatia ki te kaihoko hononga silane, ki te kaihoko hononga matū rānei mō te 10-15 meneti i te 50-80℃, ā, ko te nui o te tāpiri e taunakitia ana ko te 10-15%. Kāore he pānga whakapakari o te wollastonite mēnā kāore he maimoatanga.
Kei roto i ngā whakakī porowhita ngā porowhita iti karāhe, ngā porowhita iti karāhe tuwhera, ngā pirepire wollastonite, ngā pirepire kirihou, ngā pirepire uku, me ētahi atu.

Ko te nuinga o ngā tote konganuku whenua kawakore kei roto ko te barium sulfate, he whānui te whānuitanga o te nui o te whakakī, he rerekē ngā nekehanga o te kaha pānga o te rauemi whakakī, ā, i te tāpiri o te 60%, ka eke te kaha pānga ki te tihi.
Ko ngā kohuke whenua onge ko ngā waikura whenua onge, ngā matū alkyl whenua onge me ngā tote whenua onge, pērā i te rubidium oxide me te cerium fluoride. Ko te tikanga whakapakari o ngā kohuke whenua onge e pā ana ki tō rātou hanganga, arā, ka whakamahia ngā whenua onge hei matū whakapakari hei whakapai ake i te hanganga tioata o te pūnaha whakapakari me te whakatutuki i te kaupapa whakapakari. E whakamahia ana i roto i te whakapakari o ngā polymer tioata, pērā i te PP, PA, POM, me ētahi atu.

(2) Ngā rauemi pakari rauropi (ROF)
TuhingaPMMA, PP, PS, MMA/S me SAN, me ētahi atu. Mā te mahi takirua o te whakapakeke me te whakakaha, he parabolic te pānga o te whakapakeke me te whakakaha.

Te mātāpono whakapakari
Ina pāngia te rauemi pūmua e te taumahatanga pānga ina pakaru te rauemi (pakaru), ko te rahi o tōna pakari ka whakawhirinaki ki te rahi o te kaha pānga e mimitihia ana e te rauemi me tōna kaha ki te ātete i te whānui o te kapiti. Nō reira, he aha te mahi a ngā rauemi whakapakari me te matihiko ki te whakapakari i ngā pūmua?

1. Tikanga whakapakari elastomer

Ka mimiti tika te elastomer i te pūngao, ka puta he kapiti moroiti ina pāngia te tauira. Ina puta ngā matūriki rapa i ngā taha e rua o te kapiti, me totoro te rapa ki te whanaketanga o te kapiti, ka mimiti te rapa i te nui o te pūngao, ka whakanui ake i te kaha pānga o te kirihou.

2. Ariā hua

Ko te kaha pānga o te kirihou pakari rapa i ahu mai i te maha o ngā whakarerekētanga hua kapia matrix, ko te take o te whakarerekētanga hua kapia matrix he nui ake te tauwehenga o te whakawhānui wera me te ōwehenga Poisson o te rapa i tērā o te kirihou, ko te wā whakamatao i roto i te tukanga hanga o te whakaheke wera me te tukanga whakarerekētanga o te whakaheke whakawhiti o te ahotea kume wai-pūmau o te matrix e karapoti ana, kia piki ake ai te rōrahi kore utu o te kapia matrix, ka whakaitihia te pāmahana whakawhiti karāhe, ka ngāwari te whakaputa whakarerekētanga kirihou me te whakapai ake i te pakari. He ngāwari te whakaputa whakarerekētanga kirihou me te whakapai ake i te pakari. I tetahi atu taha, nā te pānga kukū ahotea o ngā matūriki rapa i puta ai.

3. Te ariā matua pakaru

Ka mahi ngā kirikiri rapa hei pūwāhi kukū ahotea, ka hangaia he maha o ngā kapiti iti, kaua ki ētahi kapiti nunui, ā, he nui ake te pūngao e hiahiatia ana hei whakaroa i ngā kapiti iti maha i te whakaroa i ētahi kapiti nunui. I taua wā anō, ka taupatupatu ngā mara ahotea o te maha o ngā kapiti iti tetahi ki tetahi, ka ngoikore ngā ahotea matua mō te whanaketanga o te kapiti, ā, ka whakaroa i te whanaketanga o te kapiti, ka mutu ai ngā kapiti.

4. Ariā tauira hiriwa maha

Nā te nui rawa o ngā matūriki rapa i roto i te kirihou whakapakeke, ka puta he maha o ngā tauira hiriwa i te nui o ngā kukū ahotea, ka taea te whakamārara i te nui o te pūngao. He kaiwhakamutu hoki ngā matūriki rapa i ngā rārangi hiriwa, ā, kāore e taea e ngā matūriki iti te whakamutu i te rārangi hiriwa.

5. Te ariā o te whitiki kutikuti-whiri hiriwa

He ariā nui tēnei e whakaaetia whānuitia ana i roto i te umanga. He maha ngā whakamātautau kua whakaatu ko te tikanga whakarerekētanga o te pūmua he rua ngā tukanga: ko tētahi ko te tukanga whakarerekētanga kutikuti, ko tētahi ko te tukanga ripiripiri hiriwa. Kei roto i te tukanga kutikuti te whakarerekētanga hua kutikuti horapa me te hanganga o ngā here kutikuti ā-rohe. Ko te whakarerekētanga kutikuti he huringa noa iho i te āhua o te mea, ko te kaha piripono i waenga i ngā ngota me te mātotoru o te mea kāore i te tino rerekē. Ko te tukanga whiri hiriwa, i tētahi atu taha, ka heke te mātotoru o te mea. I tētahi taha, he kōhao kei roto i te tinana o te witi hiriwa, e tohu ana kua puta he kino ki te rauemi nā te whakakīkī hiriwa, he tohu tēnei mō te kino o te whati iti-mākariki; i tētahi atu taha, he nui te kaha e pau ana i te witi hiriwa i roto i te tukanga hanganga me te tipu, e aukati ana i te whānui o ngā kapiti me te whakapai ake i te pakari o te rauemi, koinei tētahi o ngā tikanga miihini o te whakapakeketanga pūmua. Nō reira, ko te mārama tika ki te āhuatanga o te hiriwa striation te kaupapa matua o te mārama ki te tukanga whakarerekētanga me te pakaru o ngā rauemi polymer, ā, ko tētahi o ngā mea nui hei whakahaere i te hoahoa o ngā kirihou whakarerekētanga kua whakaranua tahitia, inā koa ko ngā kirihou whakapakeke.

6. Te ariā Cavitation

Ko te ariā cavitation e pā ana ki te āhuatanga o te cavitation i roto i ngā matūriki rapa, i te paparanga atanga rānei i waenga i ngā matūriki rapa me te papa i raro i te mahi a te ahotea toru-ahu i roto i te tukanga o te pāmahana iti, te tere tere rānei. Ko te ariā: i raro i te mahi a ngā kaha o waho, ka marara ngā matūriki rapa wāhanga nā te kukū ahotea, ka hua ake te atanga i waenga i te rapa me te matrix me ia anō hei whakaputa cavitation, ina cavitated ngā matūriki rapa, ka tukuna te ahotea kume wai i te taha o te rapa, ka huri te āhua ahotea o te hononga matrix angiangi i waenga i ngā kōhao, mai i te toru-ahu ki te kotahi-ahu, ā, ka tau te taumahatanga papa ki te ahotea papa, ā, ka āwhina tēnei āhua ahotea hou ki te hanganga o te roopu kutikuti. Nō reira, kāore e taea e te cavitation tonu te hanga i te whakawhiti pakarukaru-uaua o te rauemi; ka arahi noa ki te nekehanga o te āhua ahotea o te rauemi, ka whakaoho i te tuku kutikuti, ka ārai i te whānui haere o te kapiti, ka whakapai ake i te pakari o te rauemi.