News

Nhanganyaya: Kugadzirisa Yakakwira-Mutoro ATH/MDH Flame-Retardant Polyolefin Macompounds Kugadzirisa Matambudziko

Muindasitiri yematambo, zvinodikanwa zvakaomesesa zvekunonoka kwemurazvo zvakakosha kuti uve nechokwadi chekuchengetedzwa kwevashandi nemidziyo kana pakaitika moto. Aluminium hydroxide (ATH) uye magnesium hydroxide (MDH), senge halogen-isina murazvo retardants, anoshandiswa zvakanyanya mu polyolefin tambo makomisheni nekuda kwehushamwari hwadzo kwezvakatipoteredza, kuderera kwehutsi hwehutsi, uye isingaparadzi gasi kuburitswa. Zvakadaro, kuwana chinodiwa chinodzoreredza moto mumoto kazhinji kunoda kubatanidza kurodha kwakanyanya kweATH neMDH-kazhinji 50-70 wt% kana kupfuura-mu polyolefin matrix.

Kunyange zvakadaro zvemukati zvekuzadza zvakanyanya zvinosimudzira kunonoka kwemurazvo, zvinounza zvakare zvakakomba kugadzirisa matambudziko, anosanganisira kuwedzera kunyungudika viscosity, kuderera kuyerera, kukanganisa michina zvivakwa, uye hurombo hwepamusoro mhando. Idzi nyaya dzinogona kudzikamisa zvakanyanya kugadzirwa uye kunaka kwechigadzirwa.

Ichi chinyorwa chine chinangwa chekuongorora zvine hungwaru matambudziko ekugadzirisa ane chekuita neakakwira-mutoro ATH/MDH flame-retardant polyolefin makomisheni mumatambo ekushandisa. Kubva pamhinduro yemusika uye ruzivo runoshanda, iyoinozivisa inoshandaprocessingadditivesnokutikugadzirisa matambudziko aya. Mafungiro akapihwa anoitirwa kubatsira waya uye vagadziri vetambo kukwirisa maumbirwo uye kuvandudza magadzirirwo ekugadzira kana vachishanda neyakakura-mutoro ATH/MDH flame-retardant polyolefin makomponi.

Kunzwisisa ATH uye MDH Flame Retardants

ATH uye MDH maviri makuru inorganic, halogen-isina murazvo retardants anoshandiswa zvakanyanya mu polymer zvinhu, kunyanya mukushandisa tambo uko kuchengetedza uye mazinga ezvakatipoteredza akakwira. Vanoita nekuora endothermic uye kusunungurwa kwemvura, kunyungudutsa magasi anopisa uye kugadzira inodzivirira oxide layer pamusoro pezvinhu, iyo inodzvinyirira kupisa uye kuderedza utsi. ATH inoora pa200-220 ° C, nepo MDH ine tembiricha yekuora yakakwira ye330-340 ° C, zvichiita kuti MDH inyatsokodzera mapolymer anogadziriswa patembiricha yepamusoro.

1. Nzira dzinodzora moto dzeATH neMDH dzinosanganisira:

1.1. Endothermic decomposition:

Pakupisa, ATH (Al(OH) ₃) uye MDH (Mg(OH) ₂) inoora endothermic, inotora kupisa kwakanyanya uye kudzikisa tembiricha yepolymer kuti inonoke kushatisa.

ATH: 2Al(OH)₃ → Al₂O₃ + 3H₂O, ΔH ≈ 1051 J/g

MDH: Mg(OH)₂ → MgO + H₂O, ΔH ≈ 1316 J/g

1.2. Mvura vapor release:

Iyo yakaburitswa mhute yemvura inonyungudutsa magasi anopfuta yakatenderedza polymer uye inorambidza kupinda kweokisijeni, ichidzivirira kupisa.

1.3. Kuumbwa kwezvidziviriro layers:

Izvo zvinokonzerwa nesimbi oxides (Al₂O₃ neMgO) inosanganiswa nepolymer char layer kuti iite dense yekudzivirira, iyo inovhara kupisa uye kupinda mukati uye kutadzisa kuburitswa kwemagasi anopisa.

1.4. Kusvuta fodya:

Iyo inodzivirira layer zvakare inoshambadza zvimedu zveutsi, kuderedza huwandu hwehutsi hwese.

Pasinei nekuita kwavo kwakanakisa-kudzoreredza moto uye mabhenefiti ezvakatipoteredza, kuwana yakakwirira-inodzoreredza ratings inoda 50-70 wt% kana kupfuura yeATH/MDH, inova ndiyo honzeri yekuzotevera kugadzirisa matambudziko.
2. Matambudziko Anokosha Ekugadzirisa ATH / MDH Polyolefins muCable Applications

2.1. Deteriorated rheological properties:

Yakakwira mafirita kurodha zvakanyanya kuwedzera kunyungudika viscosity uye kuderedza kuyerera. Izvi zvinoita kuti plasticization uye kuyerera panguva extrusion kuomesesa, zvinoda yakakwirira kugadzirisa tembiricha uye shear masimba, izvo zvinowedzera kushandiswa kwesimba uye kukurumidza kupfeka michina. Yakaderedzwa kunyungudika kuyerera zvakare inodzikamisa extrusion kumhanya uye kugona kugadzira.

2.2. Yakaderedzwa mechanical properties:

Huwandu hukuru hwema inorganic mafirita anonatsa iyo polymer matrix, inoderedza zvakanyanya simba rekusimba, kureba panguva yekuzorora, uye simba rekuita. Semuyenzaniso, kubatanidza 50% kana kupfuura ATH/MDH kunogona kuderedza kusimba kwesimba neanenge 40% kana kupfuura, zvichiunza dambudziko kune inochinjika uye yakasimba tambo zvinhu.

2.3. Dispersion issues:

ATH uye MDH zvimedu zvinowanzo kuungana mupolymer matrix, zvichitungamira kune kushushikana kwenzvimbo, kuderedzwa kwemakanika kuita, uye hurema hweextrusion senge kushata kwepamusoro kana mabhuru.

2.4. Hunhu husina kunaka:

Yakakwira melt viscosity, kupararira kwakashata, uye kushomeka kwekuzadza-polymer kuenderana kunogona kukonzera extrudate nzvimbo kuti ive yakaoma kana kusaenzana, zvichitungamira kune "sharkskin" kana kufa kuvaka-up. Kuunganidza pakufa (kufa drool) kunokanganisa kutaridzika uye kuenderera mberi kwekugadzirwa.

2.5. Electrical property impacts:

Yakakwira mafirita emukati uye kupararira kusina kuenzana kunogona kukanganisa dielectric zvivakwa, senge vhoriyamu resistivity. Uyezve, ATH/MDH ine hunyoro hwakanyanya, hunogona kukanganisa kushanda kwemagetsi uye kugadzikana kwenguva refu munzvimbo dzine hunyoro.

2.6. Nhete yekugadzirisa hwindo:

Iyo tembiricha yekugadziridza yemhando yepamusoro-inoremedza moto-retardant polyolefins yakatetepa. ATH inotanga kuora kunosvika 200°C, ukuwo MDH ichiora kusvika 330°C. Kunyatso kudzora tembiricha kunodiwa kudzivirira kupera nguva isati yakwana uye kuve nechokwadi chekuita-murazvo-retardant kuita uye kuvimbika kwezvinhu.

Aya matambudziko anoita kuti kugadzirisa yakakwira-mutoro ATH/MDH polyolefins iome uye inosimbisa kukosha kweanobatsira kugadzirisa anobatsira.

Saka, kugadzirisa matambudziko aya, zvakasiyana-siyana zvekugadzirisa zvakagadziridzwa uye zvakashandiswa muindasitiri yetambo. Aya anobatsira anovandudza polymer-filler interfacial kuenderana, kuderedza kunyunguduka viscosity, uye kuwedzera kupararira kwekuzadza, kukwenenzvera zvese zviri zviviri kugadzirisa mashandiro uye ekupedzisira mejini zvivakwa.

Ndedzipi zviyamuro zvekugadzirisa zvinonyanya kushanda pakugadzirisa kugadzirisa uye pamusoro pemhando nyaya dzepamusoro-mutoro ATH/MDH murazvo-unodzoreredza polyolefin makomisheni mumatambo eindasitiri yetambo?

Silicone-based additives uye zvigadzirwa zvekugadzira:

SILIKE inopa zvakasiyana-siyanapolysiloxane-based processing aidskune ese ari maviri akajairwa thermoplastics uye einjiniya mapurasitiki, anobatsira kukwenenzvera kugadzirisa uye kuwedzera mashandiro ezvigadzirwa zvakapedzwa. Mhinduro dzedu dzinotangira kubva kune yakavimbika silicone masterbatch LYSI-401 kune inovandudza SC920 yekuwedzera-yakagadzirwa kuti ibudise kunyatsoshanda uye kuvimbika mune yakakwira-mutoro, halogen-isina LSZH uye HFFR LSZH tambo extrusion.

Zvakananga,SILIKE UHMW silicone-based lubricant processing additiveszvakaonekwa kuti zvinobatsira kune ATH/MDH murazvo unodzoreredza polyolefin makomisheni mumatambo. Mhedzisiro yakakosha inosanganisira:

1. Yakaderedzwa yakanyunguduka viscosity: Polysiloxanes inotamira kune yakanyunguduka pamusoro panguva yekugadzirisa, ichiita firimu remafuta rinoderedza kupesana nemichina uye inovandudza kuyerera.

2. Kuwedzera kupararira: Silicon-based Additives inokurudzira kugovera yunifomu yeATH / MDH mu polymer matrix, kuderedza kusanganiswa kwezvikamu.

3. Hunhu hwepamusoro hwakavandudzwa:LYSI-401 silicone masterbatchinoderedza kufa-up-up uye kunyungudutsa kutyoka, ichigadzira yakatsetseka extrudate nzvimbo ine hurema hushoma.

4. Inokurumidza mutsara kumhanya:Silicone Processing Aid SC920inokodzera kukwirira-kumhanya kwetambo. Inogona kudzivirira waya dhayamita kusagadzikana uye sikuruwa kutsvedza, uye kunatsiridza kugadzirwa zvakanaka. Panguva imwechete yekushandisa simba, extrusion volume yakawedzera ne10%.

5. Kuvandudzwa kwemagetsi zvivakwa: Nekusimudzira kupararira kwekuzadza uye kunamatira kwemukati, silicone masterbatch inovandudza composite kupfeka kuramba uye kuita kwemuchina, sekukanganisa pfuma & kureba panguva yekuzorora.

6. Flame-retardant synergism uye kusvuta utsi: siloxane additives inogona kuwedzera zvishoma kushanda kwemoto-retardant (semuenzaniso, kuwedzera LOI) uye kuderedza utsi hwehutsi.

SILIKE inogadzira inotungamira yesilicone-based additives, kugadzirisa aids, uye thermoplastic silicone elastomers mudunhu reAsia-Pacific.

Yedusilicone processing aidsanoshandiswa zvakanyanya mu thermoplastics uye maindasitiri etambo kukwenenzvera kugadzirisa, kunatsiridza kupararira kwekuzadza, kuderedza kunyunguduka viscosity, uye kuunza nzvimbo dzakapfava nepamusoro-soro.

Pakati pazvo, iyo silicone masterbatch LYSI-401 uye inovandudza SC920 silicone yekugadzirisa aid mhinduro dzakabvumikiswa dzeATH/MDH murazvo-unodzoreredza polyolefin maumbirwo, kunyanya muLSZH uye HFFR tambo extrusion. Nekubatanidza SILIKE's silicone-based additives uye zvigadzirwa zvekugadzira, vagadziri vanogona kuwana yakagadzikana kugadzirwa uye inowirirana mhando.

If you are looking for silicone processing aids for ATH/MDH compounds, polysiloxane additives for flame-retardant polyolefins, silicone masterbatch for LSZH / HFFR cables, improve dispersion in ATH/MDH cable compounds, reduce melt viscosity flame-retardant polyolefin extrusion, cable extrusion processing additives, silicone-based extrusion aids for wires and cables, please visit www.siliketech.com or contact us at amy.wang@silike.cn to learn more.