Kuferefeta paKufurira Mechanism yeNano-Composite Flame Retardants pane Material Properties.

Nekuvandudzwa kwesainzi yemidziyo, nano-composite flame retardants yakawana kutariswa kwakakosha mumunda wekunonoka kwemoto nekuda kwekuita kwavo kwakasarudzika. Typical nano-composite flame retardants senge montmorillonite (MMT) uye graphene inogona kukwidziridza murazvo unodzoreredza zvimiro zvezvishandiso ichiita zvinonetsa pamichina yavo. Kunzwisisa kwakadzama kwemaitiro avo emaitiro ezvivakwa zvenyama kwakakosha zvikuru pakugadzirwa kwepamusoro-kushanda-zvinodzosa moto.

Mhedziso yeNano-Composite Flame Retardants

Nano-composite flame retardants taura nezvezvinodzosa moto zvine saizi yezvidimbu zvinosvika pachikero che nanometer. Ivo vane hunhu hwakadai seyepamusoro chaiyo nzvimbo uye diki-saizi mhedzisiro. Zvichienzaniswa nezvinodzoreredza moto zvechinyakare, zvinogona kuratidza zvakanaka zvinodzoreredza murazvo pamazinga akaderera ekuwedzera uye kuderedza kukanganisa kune zvimwe zvinhu.

Montmorillonite ndeye yakaturikidzana silicate yevhu maminerari, uye yayo lamellar chimiro inoiisa iyo yakakosha zvipingamupinyi zvivakwa. Exchangeable cations iripo pakati pe lamellae. Kuburikidza nekuchinjana kweion maitiro, organic cations inogona kuunzwa kune organomodification, kuvandudza kuenderana nemapolymer matrices uye kugonesa kupararira kwakafanana mumapolima.

Graphene imbiri-dimensional kabhoni nanomaterial inoumbwa nekabhoni atomu ine sp² hybrid orbitals inogadzira hexagonal honeycomb lattice. Iyo ine yakanakisa mechaniki zvivakwa, yakakwira yekupisa conductivity, uye yakakura-yakakura chaiyo nzvimbo. Aya maitiro anoita kuti graphene ive neyakakura mukana mukusimudzira zvinhu zvemakanika zvivakwa uye kunatsiridza moto unodzoreredza kuita.

 

Kufurira Mechanism pane Flame Retardant Properties yeZvishandiso

Condensed-Phase Flame Retardant Mechanism

• Kuumbwa kweBarrier Char LayerMunguva yekupisa kwezvinhu, iyo lamellar chimiro chemontmorillonite inotama uye inopfumisa pamusoro pepolymer, ichigadzira yakawanda-yakadzika-inodzivirira kupisa inodzivirira yakaoma goko rekudzivirira rinoumbwa nekabhoni-ine aluminosilicate. Semuenzaniso, mu polypropylene / montmorillonite nanocomposites, MMT lamellae zvishoma nezvishoma inofamba ichienda kune chinhu pamusoro panguva yekupisa kuti iite dense barrier layer, kudzivirira kubuda kwemagasi anopisa uye kubuda kwekupisa kwekunze, kufanana nekuisa "jasi rekudzivirira moto" pane zvinyorwa.
• Kusimudzirwa kweChar FormationOse ari maviri montmorillonite uye graphene anogona kusimudzira kuita charring yemapolymers. Iyo lamellar chimiro chemontmorillonite inogona kushanda se template yekugadzira char, inducing yakarongedzerwa kurongeka uye carbonization yemapolymer mamorekuru pamusoro payo. Iyo yakanyanya kupisa conductivity yegraphene inogona kukurumidza kuendesa kupisa kure, kuderedza tembiricha yepolymer, kudzikamisa chiyero chekuora kwemafuta, kusimudzira kuita kwechari, kuwedzera huwandu hwechar inosara, uye nekudaro inovandudza moto unodzoreredza zvimiro zvechinhu.

Gas-Phase Flame Retardant Mechanism

• Dilution yeMagasi AnopisaMamwe ma<em>nano-composite flame retardants anoora pakupisa kukuru kuti abudise magasi asingabatiki akadai se<em>carbon dioxide uye mhute yemvura. Aya magasi anogona kuderedza kuwanda kwemagasi anobvira munzvimbo inopisa, zvichiita kuti zviome kuti maitiro ekupisa aenderere mberi. Semuyenzaniso, mamwe organomodified montmorillonites anoburitsa kabhoni dhayokisaidhi uye mamwe magasi pakupisa kwepamusoro, achidzikisa zviri mukati memagasi anopisa nekudaro achidzivirira kupisa.
• Radical TrappingGraphene ine yakakwira reactivity yakanangana nemahara radicals uye inogona kubata emahara radicals anogadzirwa panguva yekupisa, kukanganisa iyo yemahara radical chain reaction, kuderedza mwero wekupisa kwemurazvo, uye kudzima murazvo. Muchikamu chegasi, graphene inokwanisa kubata zvakanyanya anoshanda emahara radicals, kudzivirira kutapurirana kweketani yemahara radicals uye kuita kuti zviome kuchengetedza maitiro ekupisa.

Synergistic Flame Retardant Mechanism

Nano-composite flame retardants senge montmorillonite uye graphene inogonawo kugadzira synergistic flame retardant mhedzisiro nezvimwe zvechinyakare zvinodzosa moto. Semuenzaniso, kana montmorillonite uye phosphorus-ine phosphorus-ine flame retardants yakabatanidzwa pamwe chete kune mapolymers, iyo phosphorus-ine ine flame retardants inoora kuti ibudise phosphoric acid, metaphosphoric acid, nezvimwewo, panguva yekupisa. Izvi zvinhu zvinogona kusimudzira kupera mvura mumuviri uye carbonization yemapolymers, nepo montmorillonite ichiumba chipingamupinyi chepamusoro pamusoro. Izvo zviviri zvinoshanda pamwe chete kuvandudza zvakanyanya murazvo unodzora zvimiro zvezvinhu.

 

Kufurira Mechanism paMechanical Properties yeZvishandiso

Reinforcement Effect

• Stress TransferGraphene ine zvinhu zvakanakisa zvemuchina, ine simba rakapetwa ka100 pane resimbi. Kana yakaparadzirwa zvakafanana mupolymer matrix, graphene inogona kunyatso kutakura kunze kuisirwa kushushikana uye kuiendesa kune yese matrix. Munguva yekutambanudza, kupindirana kwakasimba pakati pegraphene sheets uye polymer cheni inogonesa yunifomu yekushushikana kugovera, nekudaro ichivandudza kusimba kwesimba rezvinhu.
• Kurambidzwa kweMolecular Chain MovementIyo lamellar chimiro chemontmorillonite inogona kudzora kufamba kwepolymer molecular cheni. Kana iyo polymer ichiiswa pasi pemasimba ekunze, iyo lamellar dhizaini inogona kutadzisa kutsvedza uye kurongekazve kwemaketani emamorekuru, kuwedzera kuomarara kwechinhu, uye nekudaro kuvandudza elastic modulus yechinhu. Semuenzaniso, munylon 6 / montmorillonite nanocomposites, kuvapo kweMMT lamellae kunodzora kufamba kwenylon 6 molecular cheni, kuwedzera zvakanyanya elastic modulus yezvinhu.

Toughening Effect

• Crack Deflection uye PinningKana icho chinhu chakanganiswa, graphene kana montmorillonite inogona kukonzera kutsemuka kutsauka uye pinning. Kana mutswe uchipararira uye ukasangana negraphene sheet kana montmorillonite sheet, mutswe unochinja nzira yekuparadzira nekuda kwekudyidzana pakati pebepa uye matrix, ichipedza simba rakawanda nekudaro ichivandudza kusimba kwechinyorwa.
• Kuvandudzwa kweInterfacial CompatibilityOrganic shanduko ye montmorillonite uye kugadziridzwa kwepamusoro kwegraphene kunogona kuvandudza kuenderana kwavo kwemukati nemapolymer matrices. Kuenderana kwakanaka kwemukati kunogona kusimudzira simba rekubatanidza pakati penano-fillers uye matrix, zvichiita kuti iwedzere kushanda kwekushushikana kwekufambisa uye nekudaro kuvandudza yakazara ma mechanic zvinhu zvechinyorwa.

Kukanganisa Kunokanganisa

Kana nano-composite flame retardants yakaparadzirwa zvisina kuenzana mupolymer matrix, agglomerates inoumba. Agglomerates haingotadzire kusimbaradza uye kuomesera mhedzisiro asi zvakare inova hurema mune izvo zvinhu, zviri nyore kukonzera kushushikana kwekushushikana kana kumanikidzwa, zvichikonzera kudzikira kwezvinhu zvemuchina. Uye zvakare, kuwedzera kwakanyanya kwe nano-composite flame retardants inogona kukanganisa kudyidzana pakati pe polymer cheni, inokanganisa kugadzirisa zvivakwa uye mechanical zvimiro zvezvinhu.

 

Nyaya dzekutsvakurudza uye Data Analysis

Zvidzidzo zvakawanda zvakasimbisa mhedzisiro ye nano-composite flame retardants pazvinhu zvenyama kuburikidza nekuyedza. Muchidzidzo che epoxy resin/graphene nanocomposites, kuwedzera kwehuwandu hwakakodzera hwegraphene kwakawedzera simba rekusimba ne30%, simba rekushanduka-shanduka ne25%, uye inogumira oxygen index (LOI) kubva pa22% kusvika 28%, zvichiratidza kuvandudzwa kwakakosha mune zvese mechanical uye flame retardant properties.

Kune montmorillonite-modified polypropylene zvinhu, apo iyo MMT yekuwedzera level yaive 3%, peak kupisa kuburitswa kwechinhu kwakadzikira ne40%, UL-94 vertical combustion rating yakasvika V-0, uye elastic modulus yezvinhu yakawedzera ne20%.

Zvisinei, kana nano-composite flame retardants yakaparadzirwa zvisina kuenzana kana kuwedzerwa muhuwandu hwakawandisa, maitiro ekuvandudza mashandiro anoita kushaya simba kana kutoratidza zvakaipa. Semuenzaniso, mune imwe ongororo, nekuda kwegraphene agglomeration, simba rekuita rezvakaumbwa rakadzikira ne15%.

Mhedziso uye Outlook

Nano-composite flame retardants senge montmorillonite uye graphene inonatsiridza zvakanyanya kudzoreredza murazvo wemidziyo kuburikidza neyakapfupika-phase murazvo retardancy, gasi-phase murazvo retardancy, uye synergistic murazvo unodzoreredza masisitimu, nepo ichiita zvakaomesesa zvinokonzeresa zvinhu zvemagetsi zvivakwa kuburikidza nemaitiro akadai sekushushikana kwekufambisa, kurambidzwa kwema molecular chain movement, uye pinning defle. Mumashandisirwo anoshanda, gadziriso inonzwisisika uye tekinoroji yekuparadzira inodiwa kuti ikwidzise zvakanakira nano-composite inodzoreredza moto uye kudzivirira kukanganisa kunokonzerwa nekuungana uye zvimwe zvinhu. Tsvagiridzo yeramangwana inogona kuenderera mberi nekuongorora akaumbwa masisitimu e nano-composite murazvo retardants nezvimwe zvitsva zvinodzoreredza murazvo kana zvinhu zvinoshanda kugadzira yakakwirira-inoshanda zvinhu zvine yakanakisa murazvo unodzoreredza uye michina zvivakwa zvinosangana nezvinodiwa zvakasiyana-siyana zvekushandisa.

Kuti uwane zvakawanda nezve gwara rakazara rekuferefeta maitiro e nano-composite flame retardants pazvinhu zvenyama, unogona kushanya kuDeepmaterial pa. https://www.adhesivesmanufacturer.com/ nokuti zvimwe info.