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Gabatarwa: Magance Babban Load ATH/MDH Flame-Retardant Polyolefin Compound Processing Kalubalen

A cikin masana'antar kebul, ƙaƙƙarfan buƙatu don jinkirin harshen wuta suna da mahimmanci don tabbatar da amincin ma'aikata da kayan aiki a yayin da gobara ta tashi. Aluminum hydroxide (ATH) da magnesium hydroxide (MDH), a matsayin halogen-free harshen retardants, ana amfani da ko'ina a polyolefin na USB mahadi saboda su muhalli abokantaka, low hayaki hayaki, da kuma mara-lalata gas saki. Duk da haka, samun nasarar aikin da ake buƙata na hana wuta sau da yawa yana buƙatar haɗa manyan lodi na ATH da MDH-yawanci 50-70 wt% ko mafi girma-a cikin matrix polyolefin.

Duk da yake irin wannan babban abun ciki na filler yana haɓaka jinkirin harshen, yana kuma gabatar da ƙalubalen aiki mai tsanani, gami da ƙãra dankon narkewa, rage kwararar ruwa, ƙayyadaddun kayan inji, da ƙarancin ingancin saman. Waɗannan batutuwa na iya ƙayyadadden ƙimar samarwa da ingancin samfur.

Wannan labarin yana da nufin yin nazarin ƙalubalen sarrafawa da ke da alaƙa da babban lodin ATH/MDH mai ɗaukar harshen wuta-magungunan polyolefin a cikin aikace-aikacen USB. Dangane da ra'ayoyin kasuwa da kwarewa mai amfani, shigano tasirisarrafawaadditivesdominmagance wadannan kalubale. Bayanan da aka bayar an yi niyya ne don taimakawa masu kera waya da kebul don haɓaka ƙirar ƙira da haɓaka hanyoyin samarwa yayin aiki tare da mahaɗan polyolefin mai ɗaukar wuta mai ɗaukar nauyi ATH/MDH.

Fahimtar ATH da MDH Flame Retardants

ATH da MDH manyan inorganic ne guda biyu, masu kare harshen wuta marasa halogen da ake amfani da su sosai a cikin kayan polymer, musamman a aikace-aikacen USB inda ka'idodin aminci da muhalli suke da girma. Suna aiki ta hanyar bazuwar endothermic da sakin ruwa, suna diluting iskar gas mai ƙonewa da kuma samar da Layer oxide mai kariya akan saman kayan, wanda ke hana konewa kuma yana rage hayaki. ATH yana rushewa a kusan 200-220 ° C, yayin da MDH yana da zafin jiki mai girma na 330-340 ° C, yana sa MDH ya fi dacewa da polymers da aka sarrafa a yanayin zafi mafi girma.

1. Hanyoyin hana wuta na ATH da MDH sun haɗa da:

1.1. Bazuwar Endothermic:

Bayan dumama, ATH (Al (OH) ₃) da MDH (Mg (OH) ₂) suna fuskantar bazuwar endothermic, suna ɗaukar babban zafi da rage yawan zafin jiki na polymer don jinkirta lalatawar thermal.

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

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

1.2. Sakin tururin ruwa:

Turin ruwa da aka saki yana dilute iskar gas a kusa da polymer kuma yana hana iskar oxygen, yana hana konewa.

1.3. Samar da matakan kariya:

Karfe oxides da aka samu (Al₂O₃ da MgO) sun haxa tare da polymer char Layer don samar da wani Layer na kariya mai yawa, wanda ke toshe zafi da shigar iskar oxygen kuma yana hana fitar da iskar gas mai ƙonewa.

1.4. Yanke hayaki:

Har ila yau, Layer na kariya yana shayar da ƙwayoyin hayaki, yana rage yawan yawan hayaki.

Duk da kyakkyawan aikin da suke yi na hana harshen wuta da fa'idodin muhalli, samun babban kima mai hana harshen wuta yawanci yana buƙatar 50-70 wt% ko fiye na ATH/MDH, wanda shine farkon sanadin ƙalubalen sarrafawa na gaba.
2. Mahimmin Kalubalen Gudanarwa na Babban Load ATH/MDH Polyolefins a cikin Aikace-aikacen Cable

2.1. Lalacewar halayen rheological:

Manyan abubuwan da ake amfani da su na filler suna haɓaka dankowa sosai kuma yana rage saurin gudu. Wannan yana sanya filastik da gudana yayin extrusion ya fi wahala, yana buƙatar yanayin zafi mai ƙarfi da ƙarfi, wanda ke ƙara yawan kuzari da haɓaka lalacewa na kayan aiki. Rage kwararar narkewa kuma yana iyakance saurin extrusion da ingantaccen samarwa.

2.2. Rage kayan aikin injiniya:

Babban adadin abubuwan da ke cikin inorganic suna tsoma matrix polymer, suna rage ƙarfin ƙarfi sosai, haɓakawa a lokacin hutu, da ƙarfin tasiri. Misali, hada 50% ko fiye da ATH/MDH na iya rage karfin juriya da kusan 40% ko sama da haka, yana haifar da ƙalubale don sassauƙa da kayan kebul masu ɗorewa.

2.3. Matsalolin tarwatsawa:

Kwayoyin ATH da MDH sukan haɗu a cikin matrix na polymer, wanda ke haifar da matsalolin damuwa, rage aikin injiniya, da lahani na extrusion irin su rashin ƙarfi ko kumfa.

2.4. Rashin ingancin saman:

Babban narke danko, rashin tarwatsawa, da iyakancewar dacewa da filler-polymer na iya haifar da filaye mai tsauri don zama m ko rashin daidaituwa, yana haifar da “sharkskin” ko mutuƙar haɓakawa. Tari a mutu (die drool) yana rinjayar duka bayyanar da ci gaba da samarwa.

2.5. Tasirin kadarorin lantarki:

Babban abun ciki na filler da rarrabuwa mara daidaituwa na iya shafar kaddarorin dielectric, kamar juriya na girma. Bugu da ƙari, ATH/MDH yana da ɗanɗanon ɗanɗano mai ɗanɗano, wanda zai iya yin tasiri ga aikin lantarki da kwanciyar hankali na dogon lokaci a cikin mahalli mai ɗanɗano.

2.6. kunkuntar taga sarrafawa:

Matsakaicin zafin jiki na sarrafawa don polyolefins mai ɗaukar wuta mai ɗaukar nauyi yana kunkuntar. ATH ya fara rubewa a kusa da 200 ° C, yayin da MDH ke rubewa a kusa da 330 ° C. Ana buƙatar madaidaicin kula da zafin jiki don hana bazuwar da wuri da tabbatar da aikin hana harshen wuta da amincin kayan abu.

Waɗannan ƙalubalen sun sa sarrafa babban lodin ATH/MDH polyolefins kuma suna nuna wajibcin ingantaccen kayan aikin sarrafawa.

Don haka, don magance waɗannan ƙalubalen, an ƙirƙira kayan aikin sarrafawa daban-daban kuma an yi amfani da su a cikin masana'antar kebul. Waɗannan kayan taimako suna haɓaka daidaituwar haɗin fuska na polymer-filler, rage narkewar danko, da haɓaka tarwatsewar filler, inganta duka aikin sarrafawa da kaddarorin injina na ƙarshe.

Waɗanne kayan aikin sarrafawa ne mafi inganci don magance aiki da al'amurran ingancin ƙasa na babban nauyin ATH/MDH mai riƙe da wuta na polyolefin a aikace-aikacen masana'antar kebul?

Abubuwan da ke tushen silicone da taimakon samarwa:

SILIKE yana ba da damapolysiloxane na tushen sarrafa kayan taimakodon duka daidaitattun thermoplastics da robobin injiniya, suna taimakawa haɓaka aiki da haɓaka aikin samfuran da aka gama. Maganin mu yana fitowa daga amintaccen silicone masterbatch LYSI-401 zuwa sabon SC920 ƙari - wanda aka ƙera don sadar da inganci da aminci a cikin babban kaya, LSZH mara halogen da kebul na HFFR LSZH.

Musamman,SILIKE UHMW Silicone-tushen kayan sarrafa maiAn tabbatar da amfani ga ATH/MDH mai ɗaukar wuta mai hana polyolefin mahadi a cikin igiyoyi. Mahimman illolin sun haɗa da:

1. Rage danko mai narkewa: Polysiloxanes sun yi ƙaura zuwa wurin narke yayin aiki, suna samar da fim mai lubricating wanda ke rage rikici tare da kayan aiki kuma yana inganta haɓakawa.

2. Inganta watsawa: Silicon-tushen Additives inganta uniform rarraba ATH / MDH a cikin polymer matrix, minimizing barbashi tara.

3. Inganta ingancin saman:LYSI-401 silicone masterbatchyana rage gina jiki da narkewar karaya, yana samar da filaye masu santsi tare da ƙarancin lahani.

4. Gudun layi mafi sauri:Silicone Processing Aid SC920shi ne dace da high-gudun extrusion na igiyoyi. Zai iya hana rashin kwanciyar hankali diamita na waya da zamewar dunƙulewa, da haɓaka haɓakar samarwa. A daidai amfani da makamashi, ƙarar extrusion ya karu da 10%.

5. Ingantattun kayan aikin injiniya: Ta hanyar haɓaka tarwatsewar filler da mannewa tsaka tsaki, silicone masterbatch yana haɓaka juriya mai haɗaka da aikin injin, kamar tasirin tasirin & elongation a lokacin hutu.

6. Haɗin kai na harshen wuta da hana hayaki: siloxane additives na iya ƙara haɓaka aikin jin zafi (misali, ƙara LOI) da rage fitar da hayaki.

SILIKE shine babban mai kera abubuwan da ke tushen silicone, kayan sarrafa kayan aiki, da ma'aunin siliki na thermoplastic a yankin Asiya-Pacific.

Musilicone sarrafa kayan taimakoAna amfani da ko'ina a cikin masana'antar thermoplastics da masana'antar kebul don haɓaka aiki, haɓaka tarwatsewar filler, rage ɗanɗanon narkewa, da isar da filaye masu santsi tare da inganci mafi girma.

Daga cikin su, da silicone masterbatch LYSI-401 da kuma sabon SC920 silicone sarrafa taimakon an tabbatar da mafita ga ATH / MDH harshen-retardant polyolefin formulations, musamman a cikin LSZH da HFFR na USB extrusion. Ta hanyar haɗa abubuwan da ke tushen silicone na SILIKE da kayan aikin samarwa, masana'antun na iya samun ingantaccen samarwa da daidaiton inganci.

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.