Abun da Aka Yi da Amfani da Shimfidar Zane

Maganin gyaran takarda yana nufin resin polyester mara cikawa a matsayin babban jiki, yana ƙara maganin warkarwa, wakilin sakin mold, cikawa, wakilin rage raguwar ƙaiƙayi, mai kauri, da sauransu. Maganin gyaran da aka rufe da fim ɗin polyethylene (PE). Wannan takarda galibi tana bayanin abun da aka yi da kuma yadda ake amfani da SMC a taƙaice.

Tsarin Hadin Gina Takarda

SMC ya ƙunshi resin polyester mara cika, wakilin haɗin gwiwa, mai farawa, mai cikawa, mai kauri, wakilin saki, zaren gilashi, da kuma mai hana polymerization. Daga cikinsu, nau'ikan farko guda huɗu galibi suna ba da tsarin kayan samfura da kuma ƙara ƙarfi. Rukunin huɗu na ƙarshe galibi suna da alaƙa da haɓakar ɗanko, juriya ga tsatsa, rufin gida, da kuma kwanciyar hankali na tsarin samfurin.

1. Resin polyester mara cika da sinadaran haɗin gwiwa sune babban jikin SMC. Resin polyester mara cika yawanci ana samun su ne daga unsaturated dicarboxylic acid (ko anhydrides), saturated dicarboxylic acid (ko anhydrides), da polyols. Yana da wasu halaye na injiniya da ƙarfi, kuma ƙarfin ciki iri ɗaya ne. Maganin haɗin gwiwa galibi shine styrene. Bayan an haɗa su biyun, su ne manyan kayan da ke warkar da ƙarfin samfurin, waɗanda ke taka rawar haɗi, tallafi, daidaiton watsawa, da kariya.

2. Mai ƙaddamar da shi yana sa resin da crosslinker su warke su kuma su samar a matakin manne resin. Aikinsa shine ya sa resin da haɗin biyu a cikin monomer mai haɗin giciye kamar styrene copolymerize ta yadda SMC za ta iya ƙarfafawa ta kuma samar a cikin ramin mold.

3. Mai cikewa ya mamaye fiye da kashi ɗaya bisa uku na mahaɗin zanen takarda kuma yana iya daidaita ɗanɗanon mahaɗin gyaran. Gabaɗaya yana buƙatar samun halaye na ƙarancin nauyi, ƙarancin ƙimar sha mai, ƙarancin ramuka, juriya ga tsatsa, da ƙarancin farashi. Abubuwan da aka fi amfani da su sune galibi CaCO3, Al(OH)3, da sauransu.

4. Masu kauri suna ba wa SMC ƙarfin danko mai yawa, ba ya mannewa. Shirya kayan haɗin zanen takarda da na girman abu yana buƙatar ƙarancin danko na resin don sauƙaƙe shigar da zaren gilashi da cika ta hanyar resin. Kuma gyaran matsi yana buƙatar ƙarin danko. Saboda haka, ya zama dole a ƙara mai kauri kafin aiwatar da gyaran don canza ƙarancin danko na zaren gilashi zuwa babban danko wanda ba ya mannewa.

5. Maganin sakin yana hana mahaɗin zanen takarda ya yi kama da saman mold na ƙarfe. Maganin sakin zai iya hana resin polyester mara cikawa yin hulɗa da saman mold na ƙarfe yayin aikin filastik na cakuda resin. Galibi fatty acids masu tsayi ko gishiri waɗanda zinc stearate ke wakilta. Yin amfani da shi fiye da kima zai rage aikin samfurin cikin sauƙi. Amfanin gabaɗaya ya kai kashi 1-3% na jimlar samfurin don tabbatar da ingancin samfurin.

6. Zaruruwan gilashi na iya ƙara juriya ga tsatsa da kuma halayen kariya na SMC. Haɗaɗɗen ƙera takarda yawanci yana zaɓar tabarmar zare na gilashi da aka yanka a matsayin kayan ƙarfafawa. Yin amfani da shi fiye da kima zai sa samfurin ya yi laushi sosai, kuma amfani da ƙaramin kashi ba zai yi tasiri mai ƙarfi ga samfurin ba. Amfanin gabaɗaya shine kusan kashi 20%. Ta wannan hanyar, samfurin zai iya haɗuwa da matakai biyu na ƙera extrusion da ƙera matsi a lokaci guda.

7. Mai hana yana ƙara kwanciyar hankali na SMC kuma yana tsawaita lokacin ajiya. Tunda styrene mai farawa zai ruɓe a hankali, wanda ke haifar da polymerization na resin, ƙara adadin da ya dace na free radical scavenger (polymerization inhibitor) na iya rage saurin ruɓewar styrene kuma ya tsawaita lokacin ajiya. Masu hana yawanci sune benzoquinones da polyvalent phenolic mahadi.

Amfani da Kayayyakin Hadin Takarda na Molding

SMC tana da fa'idodin ingantaccen aikin lantarki, juriya ga tsatsa, nauyi mai sauƙi, ƙirar injiniya mai sauƙi da sassauƙa, da sauransu. Abubuwan da ke cikinta suna kama da wasu kayan ƙarfe. Saboda haka, ana amfani da shi sosai a fannoni takwas kamar masana'antar motoci, motocin jirgin ƙasa, gini, kayan lantarki, da sadarwa (Tebur 1).

Daga cikinsu, a farkon matakin, galibi ana amfani da shi ne a matsayin allunan rufe fuska a fannonin gini, kayan lantarki, da sadarwa, kuma fasahar ta yi kyau sosai. Daga nan aka yi amfani da ita a masana'antar motoci don maye gurbin wani ɓangare na kayan ƙarfe da aluminum na jiki don rage nauyin motar.

A ƙarƙashin yanayin rage fitar da makamashi da kuma rage fitar da hayaki a yanzu da kuma haɓaka sabbin motocin makamashi, fasahar kayayyakin motoci ta ci gaba da bunƙasa zuwa ga sauƙi da inganci mai kyau. Har zuwa yanzu, ana iya ganin amfani da kayan SMC a ko'ina a rayuwar yau da kullun. Yana bayyana a cikin sadarwa mara waya, wuraren rufe wutar lantarki masu hana fashewa, kayan rufe ƙasa, bandakuna, da wuraren layin dogo masu sauri.

Tebur 1 Manyan aikace-aikace guda takwas da fannoni daban-daban na kayan SMC

A taƙaice

Resin polyester mara cika, wakilin haɗin gwiwa, mai farawa, da cikawa a cikin mahaɗin zanen takarda suna ba da tsarin abu don samfurin kuma suna ƙara ƙarfin tsarin. Mai kauri, wakilin sakin kaya, zare na gilashi, da mai hana polymerization suna ƙara ɗanko, juriya ga tsatsa, rufi, da kwanciyar hankali ga samfurin. An yi amfani da irin waɗannan samfuran a manyan fannoni guda takwas, ciki har da masana'antar motoci da motocin jirgin ƙasa. A ƙarƙashin yanayin kiyaye makamashi, kariyar muhalli, da ƙarancin amfani da makamashi, masana'antar kera motoci ta gabatar da buƙatu mafi girma da girma ga kayan SMC saboda buƙatunsu masu sauƙi. Wanda shine babban abin da ke haifar da haɓaka fasahar SMC.

Yi amfani dana'ura mai latsawa ta haɗaɗɗen na'ura mai aiki da karfin ruwadon yin amfani da samfuran haɗin ƙera takarda. Zhengxi ƙwararre neMasana'antar injinan injinan injina na ruwa a China, yana samar da injinan bugawa masu inganci. Tuntube mu don samun cikakkun bayanai.