Qhov sib txawv tseem ceeb ntawm saturated thiab unsaturated polyester resin yog tias cov saturated polyester resins tsis muaj ob daim ntawv cog lus hauv lawv cov saw tseem ceeb thaum lub unsaturated polyester resins muaj ob daim ntawv cog lus hauv lawv cov saw tseem ceeb.
Y A polyester yog ib qho polymer compound uas tsim los ntawm cov tshuaj tiv thaiv condensation ntawm polyol thiab cov kua qaub. Yog li ntawd, peb tuaj yeem categorize lawv li condensation polymers. Daim ntawv tshaj plaws thiab muaj txiaj ntsig zoo tshaj plaws yog daim ntawv tsis txaus ntseeg. Txawm li cas los xij, muaj daim ntawv saturated ib yam nkaus.
Dab tsi yog Saturated Polyester Resin?
Saturated polyester cob yog ib qho polymer uas tsis muaj ob lossis peb npaug ntawm daim ntawv cog lus hauv nws cov caj qaum (lub ntsiab carbon saw ntawm polymer). Txawm hais tias daim ntawv uas muaj ntau tshaj plaws yog cov khoom siv tsis txaus, peb tuaj yeem tau txais daim ntawv saturated no los ntawm kev siv ntau dhau ntawm polyol (glycol) hauv cov txheej txheem tshuaj tiv thaiv. Qhov tshwm sim tuaj yeem yog hydroxyl terminated polyester lossis carboxyl terminated ib qho. Txawm li cas los xij, daim ntawv ntau yog hydroxyl terminated polyester cob. Feem ntau, peb siv cov kua qaub xws li Isophthalic Acid, Phthalic Anhydride, Adipic Acid thiab glycols xws li Neopentyl Glycol, Propylene Glycol, Di-ethylene Glycol, Glycerine, thiab lwm yam hauv cov txheej txheem tsim khoom.
Daim duab 01: Saturated Polyester Resin raws li Raw Khoom rau Coil Coatings
Kev siv loj ntawm cov khoom no suav nrog kev tsim cov coil txheej. Txawm li cas los xij, nws nyob ntawm cov khoom thiab cov qauv ntawm cov resin; peb tuaj yeem siv lawv rau txheej, primer thiab rov qab xim rau coil txheej. Ntxiv mus, nws muaj txiaj ntsig zoo hauv kev tsim cov ntawv luam ntawv thiab thermally coated coils ib yam nkaus.
Yam ntxwv Saturated Polyester Resin
Cov yam ntxwv tseem ceeb ntawm cov polymer no yog raws li hauv qab no.
- Versatility thiab huab cua tiv thaiv
- Ntawm tawv thiab toughness
- Resistance av
- Tsim nyog rau cov kev cai dav dav; raug nqi zoo.
Dab tsi yog Unsaturated Polyester Resin?
Unsaturated polyester resin yog hom khoom siv ntau tshaj plaws, thiab nws muaj ob daim ntawv cog lus hauv nws cov caj qaum (cov saw hlau tseem ceeb). Peb tuaj yeem tsim daim ntawv no los ntawm cov tshuaj tiv thaiv condensation ntawm unsaturated dicarboxylic acids. Qhov no polymer yog ib tug linear polymer nrog ester bonds thiab ob daim ntawv cog lus. Kev siv cov polymer no suav nrog kev tsim cov ntawv molding compound, bulk molding compound, toners thiab laser printers.
yam ntxwv Unsaturated Polyester Resin
Cov yam ntxwv tseem ceeb ntawm cov polymer no suav nrog cov hauv qab no:
- Heat resistance
- siab tensile thiab compression zog
- High dabtsi yog khoov zog
- Resistance to chemical corrosion
- Zoo heev dielectric zog
- zoo fluidity thaum rhuab
Qhov txawv ntawm Saturated thiab Unsaturated Polyester Resin yog dab tsi?
Saturated polyester cob yog cov polymer uas tsis muaj ob lossis peb daim ntawv cog lus hauv nws cov pob txha. Yog li ntawd, tsis muaj unsaturation yog no polymer. Ntawm qhov tod tes, cov khoom siv tsis zoo polyester yog cov khoom siv ntau tshaj plaws, thiab nws muaj ob daim ntawv cog lus hauv nws cov caj qaum; Yog li, nws muaj unsaturation. Qhov no yog qhov sib txawv tseem ceeb ntawm saturated thiab unsaturated polyester resin.
Tsis tas li ntawd, peb tuaj yeem tsim tau ob qho tib si los ntawm cov tshuaj tiv thaiv condensation tab sis, hauv kev tsim cov saturated polyester resins, cov tshuaj tiv thaiv tshwm sim ntawm cov kua qaub thiab glycols nrog ntau dhau ntawm glycol. Whereas, nyob rau hauv zus tau tej cov unsaturated polyester resin, cov tshuaj tiv thaiv tshwm sim ntawm unsaturated dicarboxylic acids. Saib ntawm ntau qhov sib txawv, cov saturated polyester resin muaj nws qhov tseem ceeb hauv kev tsim cov coil coatings whereas, unsaturated polyester resin yog qhov tseem ceeb hauv kev tsim cov ntawv molding compound, bulk molding compound, toners thiab laser printers.
Cov hauv qab no nthuav tawm qhov sib txawv ntawm saturated thiab unsaturated polyester cob hauv daim ntawv.
Summary – Saturated vs Unsaturated Polyester Resin
Cov polyesters yog cov thermoplastic tseem ceeb polymers. Muaj ob hom polyester resins raws li cov tshuaj lom neeg ntawm cov pob txha ntawm cov polymer; lawv yog cov saturated thiab unsaturated daim ntawv ntawm polyester resins. Qhov sib txawv tseem ceeb ntawm saturated thiab unsaturated polyester resin yog tias cov saturated polyester resin tsis muaj ob daim ntawv cog lus hauv nws cov saw tseem ceeb tab sis cov polyester resin tsis muaj zog muaj ob daim ntawv cog lus hauv cov saw tseem ceeb.
