English
Amaflaski empucuko yeselizisetshenziswa ezisetshenziswayo esikalini esincane isiko cell. Ukuze kube lula ukubhekwa kwezimo zokukhula kwamaseli, izinto ze-polystyrene ezinokucaca okuphezulu ngokuvamile zikhethelwa lokhu okusebenzisekayo. Ngakho-ke, yiziphi izici zalokhu kwaziswa?
I-Polystyrene ibhekisela kupholymer ehlanganiswe kusuka ku-styrene monomer ngokusebenzisa i-radical addition polymerization. I-thermoplastic engenambala futhi ebonisa ngale enezici ezilandelayo:
1. Izinto zikagesi
Ama-molecule e-Polystyrene kanye nesakhiwo sawo esihlanganisiwe sinquma ukuthi aqinile futhi aphuka kalula, abonisa ukuphuka okuphukayo ngaphansi kwengcindezi.
2. Ukusebenza okushisayo
Izinga lokushisa le-embrittlement lilinganiselwa ku-30°C, izinga lokushisa lokushintsha kwengilazi lingu-80-105°C, izinga lokushisa elincibilikayo lingu-140-180°C, futhi izinga lokushisa lokubola lingaphezu kuka-300°C. I-thermal conductivity iphansi, isuka ku-0.04 iye ku-0.15W/(m·K), futhi ayiguqulwa neze izinga lokushisa, ngakho inokwahlukanisa okushisayo okuhle.
3. Ukusebenza kukagesi
I-Polystyrene inezinto zikagesi ezinhle, ezinokumelana nevolumu nokumelana nokuqina okuphezulu njengo-1016～1018Ω·cm kanye no-1015～1018Ω, ngokulandelanayo. Inani le-tangent yokulahlekelwa kwe-dielectric liphansi kakhulu, futhi alithintwa ukuvama, izinga lokushisa lemvelo, nokushintsha komswakama. Kuyinto enhle kakhulu yokuvikela.
4. Ukusebenza kwe-Optical
I-Polystyrene inezici ezinhle kakhulu zokubona, ezinokudlulisa ukukhanya okungama-88% kuya ku-92% kanye nenkomba ye-refractive engu-1.59 kuya ku-1.60. Ingadlulisela ukukhanya okubonakalayo kwawo wonke amaza amaza. Izinto ezibonakalayo zingokwesibili kuphela kuma-polymers e-acrylic afana ne-plexiglass kumapulasitiki. .
5. Izici zamakhemikhali
I-Polystyrene imelana kuma-alkali ahlukahlukene, usawoti kanye nezixazululo ezinamanzi. Iyakwazi ukumelana notshwala obuphansi nama-acids athile (njenge-sulfuric acid, i-phosphoric acid, i-boric acid, i-hydrochloric acid enengxenye enkulu ye-10% kuya ku-30%, ne-acetic acid enengxenye enkulu engu-1% kuya ku-25%. i-asidi enengxenye enkulu engu-1% ukuya ku-90%) nayo izinzile.
Izakhiwo ezingenhla ze-polystyrene zingahlangabezana nezidingo ze-amaflasks amasiko weseli. Ukwengeza, uma isetshenziselwa isiko lamaseli abambelelayo, ingaphezulu lebhodlela lidinga ukuguqulwa ngokukhethekile ukuze kwandiswe ukusebenza kokubambelela kwamaseli.
The FAI climbed 5.9 percent year-on-year in the first 11 months of 2018, quickening from the 5.7-percent growth in Jan-Oct, the National Bureau of Statistics (NBS) said Friday in an online statement.
The key indicator of investment, dubbed a major growth driver, hit the bottom in August and has since started to rebound steadily.
In the face of emerging economic challenges home and abroad, China has stepped up efforts to stabilize investment, in particular rolling out measures to motivate private investors and channel funds into infrastructure.
Friday's data showed private investment, accounting for more than 60 percent of the total FAI, expanded by a brisk 8.7 percent.
NBS spokesperson Mao Shengyong said funds into weak economic links registered rapid increases as investment in environmental protection and agriculture jumped 42 percent and 12.5 percent respectively, much faster than the average.
In breakdown, investment in high-tech and equipment manufacturing remained vigorous with 16.1-percent and 11.6-percent increases respectively in the first 11 months. Infrastructure investment gained 3.7 percent, staying flat. Investment in property development rose 9.7 percent, also unchanged.