Chidzidzo Chekuenzanisa Pakushanda kweEpoxy Toughening kweCTBN, ATBN neHTN
Zvinhu Zvinokosha Zvaunofanira Kuziva
- CTBN inowedzera zvakanyanya kusimba kwe epoxy, ichiwedzera simba rekukanda neanopfuura 692%. Izvi zvinoita kuti ive sarudzo yepamusoro kune akawanda mashandisirwo.
- Kushandisa huwandu hwakakodzera hweCTBN, hunosvika 20%, kunovandudza kuchinjika uye kusimba pasina kukanganisa simba. Kuedza huwandu hwakasiyana kunogona kutungamira kumhedzisiro yakanaka.
- CTBN inowanikwa zvakanyanya uye iri nyore kusanganisa ne epoxy, zvichiita kuti ive sarudzo inoshanda kumapurojekiti akasiyana-siyana. ATBN kana HTPN yezvinodiwa chaizvo, asi CTBN ndiyo inowanzo shandiswa.
Chidzidzo Chekuenzanisa Pakushanda kweEpoxy Toughening kweCTBN, ATBN, uye HTPN
Chii chinonzi CTBN?
CTBN inomiririra butadiene acrylonitrile inogumira mu carboxyl. Iyi irabha yemvura inoshandiswa nemasayendisiti kusimbisa ma epoxy resins. CTBN ine mapoka e carboxyl kumagumo emaketani ayo. Mapoka aya anobatsira CTBN inosangana nemaresini epoxyCTBN inowanzova nehuremu hwemamorekuru pakati pe2000 ne3000. Vanhu vanowanzo sarudza CTBN nekuti inovandudza kuchinjika uye simba re epoxy. MuComparative Study on Epoxy Toughening Performance of CTBN, vaongorori vakawana kuti CTBN inogona kuwedzera resistance ye epoxy resins zvakanyanya.
| Zita reKemikari | Kurema kweMorekuru |
|---|---|
| CTBN | 2000 - 3000 |
Chii chinonzi ATBN?
ATBN inomirira butadiene acrylonitrile inogumiswa neamino. Chinhu ichi ndechimwe rudzi rwerabha yemvura. ATBN ine mapoka eamino kumagumo emaketani ayo. Mapoka aya anobatsira ATBN kuita zvinoenderana nema epoxy resins nenzira yakasiyana neCTBN. ATBN haina huremu hwakatarwa hwemamorekuru muzvidzidzo zvakawanda. Vanhu vanoshandisa ATBN yekuvandudza kusimba kwe epoxy, asi inoshanda zvakanyanya muzviitiko zvakakosha. MuChidzidzo Chekuenzanisa paEpoxy Toughening Performance yeCTBN, ATBN, uye HTPN, ATBN inoratidza mhedzisiro yakanaka kune mamwe mashandisirwo.
| Zita reKemikari | Kurema kweMorekuru |
|---|---|
| ATBN | Hazvina kutaurwa |
Chii chinonzi HTTPN?
HTPN inomiririra hydroxyl-terminated polybutadiene nitrile. Chinhu ichi zvakare irabha yemvura. HTPN ine mapoka ehydroxyl kumagumo emaketani ayo. Mapoka aya anobatsira HTPN kubatana nema epoxy resins. HTPN haina kuwanda kupfuura CTBN ne ATBN. Vanhu vanoshandisa HTPN kana vachida hunhu hwakakosha muma epoxy resins avo. HTPN inogona kuita kuti epoxy ive nyore uye yakasimba, asi haina kufarirwa seCTBN.
| Zita reKemikari | Kurema kweMorekuru |
|---|---|
| HTTPN | 2000 - 3000 |
Magadzirirwo aya anosimbisa sei epoxy?
CTBN, ATBN, uye HTTPN zvese zvinobatsira kuti epoxy resins iome. Vanoita izvi nenzira shoma huru:
- CTBN inogadzira zvisungo zvemakemikari ne epoxy. Mapoka e carboxyl mu CTBN anoita zvinoenderana nemapoka e epoxy kuti agadzire hukama hwakasimba hwe ester.
- Panguva yekugayiwa, CTBN inopatsanuka kuita zvidimbu zvidiki zvakaita serabha mukati me epoxy. Maitiro aya anonzi micro-phase separation. Zvikamu izvi zvinobatsira kupinza simba kana epoxy yarohwa kana kukotama.
- Pamusoro pezvikamu zverabha zvinobatsira epoxy inonamira zviri nani kune zvimwe zvinhu, zvakaita semafiber ekabhoni. Izvi zvinoumba chisungo chakasimba uye zvinobatsira epoxy kuramba kutyoka.
- ATBN neHTPN zvinoshanda nenzira dzakafanana, asi mapoka avo ekupedzisira (amino kana hydroxyl) anochinja maitiro aanoita ne epoxy. Izvi zvinogona kukanganisa hunhu hwekupedzisira hwe resin.
Vanhu vanowanzo shandisa huwandu hwakasiyana hwemagadzirirwo aya kuti vawane mhedzisiro yakanaka. Semuenzaniso:
- Kuwedzera CTBN yakawanda kunogona kuwedzera tembiricha iyo epoxy inoporesa. Zvinogonawo kuderedza simba rinodiwa pakuita kwekuita.
- Kana mumwe munhu akawedzera CTBN yakawandisa, epoxy inogona kurasikirwa nesimba. Kusimba kwakanyanya kunowanzoitika pa20% CTBN.
- Pa 20% CTBN, epoxy inotambanuka zvakanyanya isati yatyoka. Izvi zvinoreva kuti inogona kunwa simba rakawanda uye kashoma kuti ityoke.
Zano: Huwandu hwakakodzera hwemuchina wekugadzirisa hunoenderana nebasa racho. Hushoma hunogona kusasimbisa epoxy zvakakwana. Huzhinji hunogona kuita kuti epoxy isashande zvakanaka.
Chidzidzo cheKuenzanisa pamusoro peEpoxy Toughening Performance yeCTBN chinoratidza kuti CTBN inopa kuenzana kwakanakisa kwekusimba uye kusimba kwekushandiswa kwakawanda. ATBN neHTTPN inogona kushanda zvakanaka kune zvinodiwa zvakakosha, asi CTBN ndiyo sarudzo inowanzo shandiswa.
Mashandiro anoita CTBN, ATBN, uye HTPN muEpoxy Resins
CTBN Kusimbisa Mechanism
CTBN inoshandura maitiro ema epoxy resins. Masayendisiti anowedzera CTBN ku epoxy, uye inoumba zvidimbu zvidiki zvakaita serabha mukati me resin. Zvikamu izvi zvinobatsira epoxy kutora simba kana yarohwa kana kukotama. Mapoka ecarboxyl ari kumagumo emaketani eCTBN anoita zvinoenderana ne epoxy, zvichiita kuti pave nezvisungo zvakasimba. Kuita uku kunogadzira network inobata zvidimbu zverabha panzvimbo. Mugumisiro wacho i epoxy inokotama zvakanyanya isati yatyoka. Vaongorori vazhinji muComparative Study pa Kushanda kweEpoxy Toughening kweCTBN vakawana kuti CTBN inopa musanganiswa wakanakisisa wekusimba nekusimba.
Cherechedza: CTBN inoshanda zvakanaka nekuti inopararira zvakaenzana mu epoxy uye inoumba ma link akasimba.
ATBN Kusimbisa Mechanism
ATBN inoshandisa mapoka eamino kuti iite zvinoenderana nema epoxy resins. Mapoka aya anobatsira ATBN kubatana ne epoxy panguva yekupisa. ATBN inogadzirawo zvidimbu zvakaita serabha, asi nzira yainosungana nayo yakasiyana neCBTN. Mapoka eamino anogona kuita kuti epoxy cure ikurumidze. ATBN inovandudza kusimba, asi inoshanda zvakanyanya muzviitiko zvakakosha. Vamwe vashandisi vanosarudza ATBN pavanenge vachida cure nekukurumidza kana special bonding.
- ATBN inogona kuita kuti epoxy igone kuchinjika.
- Zvingasava nesimba guru rekubata sezvakaita CTBN.
Nzira yekusimbisa HTPN
HTPN inoshandisa mapoka ehydroxyl kuti ibatane ne epoxy. Mapoka aya anobatsira HTPN kusanganisa zvakanaka ne resin. HTPN inogadzira zvidimbu zvakaita serabha, kungofanana neCBTN neATBN. Mapoka ehydroxyl anogona kuita kuti epoxy igone kuchinjika. HTPN haiwanzoitiki, asi inobatsira kana vashandisi vachida zvinhu zvakakosha. HTPN inogona kuwedzera kusimba, asi ingasashande zvakanaka seCBTN pakushandiswa kwakajairika.
| Chigadziriso | Boka Rekupedzisira | Mhedzisiro Yokusimbisa |
|---|---|---|
| CTBN | Carboxyl | Yakakwirira |
| ATBN | Amino | Pakati nepakati |
| HTTPN | Hydroxyl | Pakati nepakati |
Chidzidzo Chekuenzanisa Pakushanda kweEpoxy Toughening kweCTBN: Musiyano weMechanical nePractical
Kuenzanisa Zvimiro zveMechanical
CTBN, ATBN, uye HTPN imwe neimwe inoshandura hunhu hwe epoxy resins nenzira dzakasiyana. CTBN inoonekwa nekugona kwayo kuwedzera kusimba uye kuchinjika. Kana CTBN yawedzerwa, epoxy inogona kutora simba rakawanda isati yatyoka. Izvi zvinoreva kuti chinhu chacho hachizonyanyi kutsemuka kana chamanikidzwa. ATBN inovandudzawo kusimba, asi haiwedzere simba rekukanda seCTBN. HTPN inobatsira kuita kuti epoxy ive nyore kuchinjika, asi haienderane nekusimba kunopihwa neCTBN.
Vaongorori muComparative Study on Epoxy Toughening Performance yeCTBN vakawana kuti maCTBN-modified epoxy resins anoratidza kuwedzera kukuru kwesimba reimpact. Zvidimbu zverabha zvinoumbwa neCTBN zvinobatsira epoxy kukotama pachinzvimbo chekutyoka. ATBN neHTN zvinoshanda zvakanaka kune vanhu vane zvinodiwa zvakasiyana, asi CTBN inopa chiyero chakanakisa chekushandiswa kwakawanda.
Kuenderana neEpoxy
Kusanganiswa kwemugadziri wega wega ne epoxy kwakakosha. Kuenderana kwakanaka kunoreva kuti mugadziri anopararira zvakaenzana uye anogadzira chisungo chakasimba ne resin.
- CTBN inowedzera kupisa kwakanyanya kwemuviri (Tp) mu epoxy resin formulations.
- CTBN inoderedza reaction enthalpy (ΔH), zvinoreva kuti reaction inoshandisa simba shoma.
- Masisitimu akagadziriswa neCTBN anoratidza Tp yakakwira (semuenzaniso, C25: Tp = 167.4 °C) uye ΔH yakaderera (semuenzaniso, ΔH = 264.6 J g−1) zvichienzaniswa ne epoxy yakanaka.
- Kuwedzera CTBN kunoita kuti pave nekuwedzera kukuru kwe viscosity, izvo zvinokanganisa kuti epoxy iri nyore sei kugadzirisa.
- Nguva yegel ye epoxy yakagadziriswa neCTBN yakareba (inenge maminetsi gumi nemasere) kupfuura ye epoxy yakanaka.
- Kuvapo kwe h-BN hakuchinji nguva yegel zvakanyanya, saka CTBN inogona kupa mashandiro akaenzana.
CTBN inoshanda zvakanaka nemarudzi akawanda e epoxy resins. Izvi zvinoita kuti ive sarudzo yakakurumbira muComparative Study on Epoxy Toughening Performance ye CTBN. ATBN ne HTPN zvinogonawo kusanganiswa ne epoxy, asi mhedzisiro yazvo pakugadzirisa uye hunhu hwekupedzisira yakasiyana.
Kugadzirisa uye Kubata
Kugadzirisa nekugadzirisa zvinhu zvakakosha kune chero munhu anoshandisa mamodifier aya. CTBN inoshandura maitiro anoita epoxy panguva yekusanganisa nekugaya.
Maitiro ekusimbisa eCTBN anosanganisira maitiro panguva yekugadzira pre-polymer, apo CTBN inobatana ne epoxy kuti igadzire block copolymer. Maitiro aya anovandudza hunhu hwemuchina wecomposite nekugadzira chikamu cherabha chakapararira chinovandudza kusimba.
CTBN inokanganisa zvakanyanya viscosity uye gel time ye epoxy, nekuwedzera kwakanyanya kwe viscosity sezvo CTBN loading ichikwira, izvo zvinoita kuti kugadzirisa kuve kwakaoma. Nguva yegel ye epoxy yakanaka inenge maminetsi gumi nemasere, asi kuwedzera CTBN kunowedzera nguva iyi nekuda kwekuwedzera viscosity uye phase morphology changes.
Vanhu vanoshandisa CTBN vanofanira kuisanganisa zvakanaka kuti vawane mhedzisiro yakanaka. Kuwanda kwe viscosity kunogona kuita kuti kudurura nekupararira kuome. Nguva yakareba yegel zvinoreva kuti vashandisi vane nguva yakawanda yekushanda ne epoxy isati yaoma. ATBN neHTN zvingasachinja viscosity nenguva yegel zvakanyanya seCTBN, saka zvinogona kuva nyore kubata mune dzimwe nguva.
Mutengo uye Kuwanikwa
CTBN iri nyore kuwana nekutenga. Makambani mazhinji anogadzira CTBN nekuti inoshanda zvakanaka nema epoxy resins akasiyana. Kuwanikwa uku kwakakura. inoita kuti CTBN ive sarudzo yepamusoro yeindasitiri. Kugadzikana kweCTBN mu epoxy zvinoreva kuti zvigadzirwa zvakagadzirwa nayo zvinogara zvakafanana nguva dzese. ATBN neHTPN zviripowo, asi zvinogona kudhura zvakanyanya kana kuti zvakaoma kuwana. Vamwe vashandisi vanosarudza ATBN kana HTPN yemabasa akakosha, asi vazhinji vanosarudza CTBN yekushandiswa kwakajairika.
Chidzidzo cheKuenzanisa paEpoxy Toughening Performance yeCTBN chinoratidza kuti CTBN ndiyo modifier inofarirwa nekuda kwezvikonzero zvakawanda. Inopa hunhu hwakasimba hwemakanika, inoenderana zvakanaka, uye iri nyore kuwana kune vatengi.
Nei CTBN Inowanzova Chigadziriso Chinodiwa
Mabhenefiti Akakosha eCTBN
CTBN inonyanya kushandiswa pakusimbisa ma epoxy resins. Vaongorori vazhinji nenyanzvi dzeindasitiri vanosarudza CTBN nekuti ine mabhenefiti akakosha:
- CTBN inosanganiswa zvakanaka nema epoxy resins asina kucheneswa. Izvi zvinoita kuti zvive nyore kuwedzera CTBN mu epoxy usati wacheneswa.
- Munguva yekugadzika, CTBN inopatsanuka kuita zvidimbu zvidiki, zvakatenderera. Zvikamu izvi zvinobatsira epoxy kunwa simba uye kuramba kutsemuka.
- CTBN inoshanda sepurasitiki. Inoderedza tembiricha yekuchinja kwegirazi (Tg) ye epoxy. Kuchinja uku kunoita kuti epoxy ive nyore kuchinjika uye inovandudza kuramba kwayo kusimba.
CTBN inobatsira kugadzira zvinhu zve epoxy zvakasimba uye zvinochinjika. Hunhu uhwu hunoita kuti CTBN ive sarudzo inozivikanwa mumabasa mazhinji, kubva pakuvaka kusvika kumagetsi.
Miganhu yeCTBN
CTBN ine zvimwe zvipingamupinyi izvo vashandisi vanofanira kufunga nezvazvo. Tsvagiridzo inoratidza kuti CTBN inogona kukonzera matambudziko makuru ekusimba. Kana CTBN yawedzerwa, musanganiswa wacho unova wakakora zvikuru. Kuwedzera uku kwekusimba kunogona kuita kuti zviome kusanganisa nezvimwe zvinowedzerwa. CTBN inotungamirawo kune nguva yakareba yegel panguva yekugadzika. Nguva yakareba yegel zvinoreva kuti epoxy inotora nguva yakareba kuti iome, izvo zvinogona kunonoka kugadzirwa. Zvinhu izvi zvinogona kuganhurira mashandisirwo uye kupi maepoxies akagadziriswa neCTBN. Vashandisi vanofanira kuyera mabhenefiti ekusimba uye kuchinjika nematambudziko ekugadzirisa.
Kusarudza Chigadziriso Chakakodzera Chekushandisa Kwako
Sarudzo Yakanakisisa Yekushandisa Kazhinji
CTBN inoshanda zvakanaka kune zvakawanda zvinodiwa pakusimbisa epoxy. Mainjiniya mazhinji nemasayendisiti vanosarudza CTBN nekuti inovandudza simba uye kuchinjika. CTBN inoita basa ne epoxy kuti igadzire block copolymer. Kuita uku kunogadzira zvisungo zvakasimba painterface, izvo zvinobatsira kuti zvinhu zvisaputsike. Kana CTBN ikashandiswa padanho rakakodzera, senge 25%, epoxy inogona kuratidza kuwedzera kwe33% musimba rekukwenya rinokwenya uye kuwedzera kwe528% musimba rekukanda. CTBN inobatsirawo muzvinhu zvinosanganisa carbon fiber nekushanda pazviyero zvakasiyana kuti zvinhu zviome. Izvi zvinoita kuti CTBN ive sarudzo yakavimbika kumapurojekiti mazhinji.
Nguva Yekufunga Nezve ATBN kana HTPN
Mamwe mapurojekiti anoda zvinhu zvakakosha. ATBN inogona kubatsira kana mushonga wacho uchikurumidza Zvakakosha kana mushandisi achida kuchinjika zvakanyanya. HTPN inoshanda zvakanaka kana chinangwa chiri chekuwedzera kuchinjika pasina kurasikirwa nesimba rakawanda. Zvese ATBN neHTPN zvinogona kubatsira kune zvishandiso zvakasiyana, zvakaita semagetsi kana machira anoda kupfava zvakanyanya. Vashandisi vanofanira kutarisa zvinodiwa nechigadzirwa chekupedzisira vasati vasarudza magadzirisi aya.
Mazano ekusarudza Mumiriri Anobata
Kusarudza modifier chaiyo kunoda kunyatsofungwa. Vanhu vazhinji vanoita zvikanganiso nekusarudza zvichibva pamashoko anozivikanwa chete kana nekushandisa modifier yakawandisa. Vamwe vanokanganwa kutarisa kuti modifier inosanganisa sei uye inopararira sei mu epoxy. Heano mamwe matipi:
- Tarisa kuti modifier inokanganisa sei kugadzirisa, sekusanganisa nekuporesa.
- Edzai huwandu hwakasiyana kuti muwane chiyero chakanakisisa chekusimba uye kusimba.
- Tarisa kuti modifier inopararira sei mu epoxy.
- Usatarisira kuti modifier imwe chete igadzirise dambudziko rega rega.
- Gara uchienzanisa chinogadzirisa zvinodiwa neprojekiti.
Zano: Kunyatsoongorora nekunyatsoongorora kunoita kuti pave nemigumisiro iri nani uye zvinhu zvisingatarisirwi zvakawanda.
CTBN inoita kuti epoxy resins irambe yakasimba uye iri nyore kugadzirisa. Vazhinji vanoshandisa CTBN vanosarudza CTBN pamapurojekiti akajairika. ATBN neHTN zvinoshanda zvirinani kune zvinodiwa zvakasiyana. Vashandisi vanofanira kugara vachitarisa zvinodiwa neprojekiti yavo kuti vaone kusimba, kubata, uye mutengo usati wasarudza modifier.
Zano: Sarudzo chaiyo inounza mhedzisiro iri nani.
Mibvunzo Inowanzo bvunzwa
Chii chinonzi CTBN?
CTBN zvinoreva butadiene acrylonitrile inogumiswa nekabhokisi. Masayendisiti anoishandisa kuita kuti epoxy resins iome uye ive nyore kuchinjika.
Ko CTBN inogona kusanganiswa ne epoxy resin here?
Mazhinji epoxy resins anoshanda zvakanaka neCTBN. Vashandisi vanofanira kugara vachiyedza bhechi diki kutanga vatarisa kana vachisanganisa zvakanaka uye kuti vanoshanda zvakanaka here.
Ko CTBN inochinja ruvara rwe epoxy here?
CTBN kazhinji haichinje ruvara zvakanyanya. Mamwe maresini anogona kutaridzika seane makore zvishoma mushure mekuwedzera CTBN, asi mhedzisiro yacho idiki.