Poliyesitala utomoni: katundu ndi ntchito, maonekedwe a

The poliyesitala utomoni ali ndi kuchuluka lonse ndithu ntchito. mankhwala amenewa akamagwira kupanga mankhwala ndi zina zovuta ndondomeko ya kaphatikizidwe ndi processing wa mankhwala. The poliyesitala utomoni zikuchokera ndi alcohols, iwo anapanga chifukwa cha kuyenga mepropriyaty. Zambiri zokhudza poliyesitala resins pano.

Izi glycols (mwachitsanzo, monoethylene glycol, diethylene, triethylene, propylene, butylene), komanso glycerol, pentaerythritol, xylitol. Zidulo: Asidiyu orthophthalic, asidi adipic, asidi sebacic, asidi terephthalic, maleic anhydride, kuphatikizapo methacrylic acid akiliriki. Ngati ndi kotheka, ndi kusinthidwa wa resins poliyesitala ndi ntchito masamba mafuta ndi mafuta, komanso zidulo utomoni.

Ntchito mankhwala amenewa kubala zosiyanasiyana. Izi alumikizana mabwato, komanso ambiri zokhudza iwo, ndi zimbudzi, surfboards, etc.

ntchito mankhwala awa zopezera zosiyanasiyana za kupanga, kupanga mankhwala kusamva mankhwala. Iwo bwino akamufotokozera kupanga alendo ndi masewera zipangizo, komanso chilengedwe cha Chalk kuikira Mwachitsanzo, anthu ambiri anamva mfundo m'bafa akiliriki kapena thireyi akiliriki shawa, etc.

Poliyesitala resins ndi makhalidwe kwambiri khalidwe. Kuti zinthu monga:

• kukana kuti kusintha kulikonse kutentha (kutentha zimasiyanasiyana mu osiyanasiyana 60 - 100 madigiri);
• wapadera mkulu mawotchi kukana (pambuyo solidification wathunthu ali zamphamvu ndi mlingo kuuma);
• kukana kuti zinthu za mipweya (kupatula mafakitale);
• kuvala kukana ndi utumiki yaitali moyo wa malonda poliyesitala utomoni, ndi original makhalidwe khalidwe mwamtheradi si yafupika;
• mankhwala a zinthu zomwezo pafupifupi kuthetsa shrinkage.

Kugwira ntchito ndi zinthu monga poliyesitala utomoni, sayambitsa Kuvuta ndipo amafuna Luso pang'ono ndi zinachitikira. Chinthu chachikulu - kusunga malamulo zofunika chitetezo ntchito zikuchokera izi ndi kuganizira ena mokoma. Mwachitsanzo, ku utomoni pa ndondomeko achisanu ndi chomaliza mankhwala anali pamwamba ananena kuti katundu wa mphamvu ndiponso kudalirika m'pofunika ntchito hardeners wapadera.

Amanenanso kuti kuphatikiza utomoni ndi hardener ayenera ntchito mwamsanga ndondomeko anayamba zimene exothermic. Pambuyo kutsatira mfundo zofunikira kumupatsa nthawi zambiri kuti alimbitse ndi kutenga mawonekedwe ankafuna.

Ngati mukufuna kugula mankhwala, muyenera tengani kusankha katundu. Izo ziyenera kupereka zikalata zonse zofunikira kwa malonda awo. Mukatero otsimikiza apamwamba ake. Ndipotu khalidwe n'kofunika kwa ife. A mankhwala monga poliyesitala utomoni ndi kuchuluka zofunika. N'chifukwa chake muyenera amakayikira kwambiri kugula awo.