Ƙirƙiri da Aikace-aikacen Haɗin Gyaran Sheet

Sheet gyare-gyare fili yana nufin unsaturated polyester guduro a matsayin babban jiki, ƙara curing wakili, mold saki wakili, filler, low shrinkage wakili, thickener, da dai sauransu Molding fili rufe polyethylene (PE) fim.Wannan takarda a taƙaice ta bayyana ƙayyadaddun abubuwa da aikace-aikacen rarrabuwa na SMC.

Haɗin Haɗin Rubutun Sheet Molding Compound

SMC ya ƙunshi resin polyester unsaturated, wakilin crosslinking, mai ƙaddamarwa, filler, thickener, wakili na saki, fiber gilashi, da mai hana polymerization.Daga cikin su, nau'ikan nau'ikan guda huɗu na farko suna ba da tsarin kayan samfuri da haɓaka ƙarfi.Rukuni huɗu na ƙarshe sun fi dacewa don kaddarorin ƙarin danko, juriyar lalata, rufi, da kwanciyar hankali na samfurin.

1. Unsaturated polyester resin da crosslinking jamiái su ne babban jikin SMC.Resin polyester mara kyau yawanci suna polycondensed daga unsaturated dicarboxylic acid (ko anhydrides), cikakken dicarboxylic acid (ko anhydrides), da polyols.Yana da wasu ƙayyadaddun kayan aikin injiniya da ƙarfi, kuma ƙarfin cikin gida daidai ne.Wakilin haɗin gwiwar ya fi styrene ne.Bayan an haɗa su biyun, sune manyan kayan don maganin filastik na samfurin, wanda ke taka rawar haɗin gwiwa, tallafi, daidaitawar watsawa, da kariya.

2. Mai ƙaddamarwa yana haifar da guduro da crosslinker don warkewa kuma su samar a cikin matakin manna guduro.Ayyukansa shine don yin guduro da haɗin haɗin kai biyu a cikin monomer mai haɗawa kamar styrene copolymerize domin SMC ya iya ƙarfafa kuma ya kafa a cikin rami na mold.

3. Filler ya mamaye fiye da kashi ɗaya bisa uku na fili na gyare-gyaren takarda kuma zai iya daidaita danko na fili na gyare-gyare.Gabaɗaya yana buƙatar samun halaye na ƙayyadaddun ƙayyadaddun nauyi, ƙarancin tallan mai, ƙarancin pores, juriyar lalata, da ƙarancin farashi.Abubuwan da aka saba amfani dasu sune CaCO3, Al(OH) 3, da sauransu.

4. Masu kauri suna ba wa SMC babban danko, kadarorin da ba su da ƙarfi.Shirye-shiryen zanen gado da mahadi masu gyare-gyaren girma suna buƙatar ƙaramin ɗanko na guduro don sauƙaƙe impregnation na fiber gilashi da filler ta guduro.Kuma gyare-gyaren matsawa yana buƙatar ƙarin danko.Saboda haka, wajibi ne a ƙara wani thickener kafin gyare-gyaren tsari don canza ƙananan danko na gilashin fiber impregnation a cikin babban danko wanda ba shi da danko.

5. The release wakili ya hana takardar gyare-gyare fili daga samun dangantaka da karfe mold surface.Wakilin saki zai iya hana resin polyester mara kyau daga yin hulɗa tare da saman ƙirar ƙarfe yayin aikin filastik na cakuda guduro.Yawanci mai dogon sarkar fatty acid ko gishiri wanda zinc stearate ke wakilta.Yin amfani da yawa zai rage aikin samfur cikin sauƙi.Babban amfani yana lissafin 1 ~ 3% na jimlar samfurin don tabbatar da ingancin samfurin.

6. Gilashin gilashi na iya haɓaka juriya na lalata da kayan haɓaka na SMC.Filin gyare-gyaren takarda yawanci yana zaɓar yankakken gilashin fiber mats azaman kayan ƙarfafawa.Yin amfani da wuce gona da iri zai sa samfurin ya yi laushi cikin sauƙi, kuma yin amfani da ƙarami kaɗan ba zai sami tasirin ƙarfafawa a zahiri ba akan samfurin.Babban amfani shine kusan 20%.Ta wannan hanyar, samfurin zai iya saduwa da matakai guda biyu na extrusion gyare-gyare da gyare-gyaren matsawa.

7. Mai hanawa yana ƙaruwa da kwanciyar hankali na SMC kuma yana tsawaita lokacin ajiya.Tun da styrene mai farawa zai rushe sannu a hankali, yana haifar da polymerization na resin, ƙara adadin da ya dace na ɓacin rai na kyauta (mai hana polymerization) zai iya rage saurin bazuwar styrene kuma ya tsawaita lokacin ajiyarsa.Masu hanawa yawanci benzoquinones ne da mahaɗan phenolic polyvalent.

Aikace-aikacen Samfuran Haɗaɗɗen Sheet

SMC yana da abũbuwan amfãni daga m lantarki yi, karfi lalata juriya, nauyi, sauki da kuma m injiniya zane, da dai sauransu. Its inji Properties ne m zuwa wasu karfe kayan.Don haka, ana amfani da shi sosai a fannoni takwas kamar masana'antar kera motoci, motocin jirgin ƙasa, gini, kayan lantarki, da sadarwa (Table 1).

Daga cikin su, a matakin farko, an fi amfani da shi ne ta fuskar allunan da ake amfani da su a fannin gine-gine, da na’urorin lantarki, da sadarwa, kuma fasahar ta balaga.Daga nan ne aka yi amfani da ita a masana'antar kera motoci don maye gurbin wani bangare na kayan karfe da aluminum na jiki don rage nauyin motar.

Ƙarƙashin bayan tanadin makamashi na yanzu da rage fitar da hayaki da haɓaka sabbin motocin makamashi, fasahar samfuran kera ke ci gaba da haɓaka zuwa nauyi da inganci.Har zuwa yanzu, ana iya ganin aikace-aikacen kayan SMC a ko'ina cikin rayuwar yau da kullun.Ana nunawa a cikin hanyoyin sadarwa mara igiyar waya, shingen lantarki da ke hana fashewar abubuwa, kayan kariya na ƙasa, dakunan wanka, da wuraren jirgin ƙasa mai sauri.

Table 1 Manyan aikace-aikace takwas da sassan yanki na kayan SMC

Takaita

Gudun polyester da ba a cika ba, wakili mai haɗin gwiwa, mai ƙaddamarwa, da filler a cikin fili na gyare-gyaren takarda suna ba da tsarin kayan samfuri da haɓaka ƙarfin tsarin.Thickener, wakili na saki, fiber gilashi, da mai hana polymerization suna ƙara danko, juriya na lalata, rufi, da kwanciyar hankali ga samfurin.An yi amfani da irin waɗannan samfuran a manyan fannoni takwas da suka haɗa da masana'antar kera motoci da motocin jirgin ƙasa.A ƙarƙashin yanayin kiyaye makamashi na yanzu, kariyar muhalli, da ƙarancin amfani da makamashi, masana'antar kera motoci sun gabatar da mafi girma da buƙatu don kayan SMC saboda buƙatun su masu nauyi.Wanda shine babban dalilin bunkasa fasahar SMC.

Yi amfani dana'ura mai aiki da karfin ruwa mai hadewadon danna takardar gyare-gyaren fili kayayyakin.Zhengxi kwararre nena'ura mai aiki da karfin ruwa latsa factory a kasar Sin, samar da matsi masu inganci.Tuntube mu don samun cikakkun bayanai.