Dab tsi yog cov txheej txheem molding ntawm polyurethane raw khoom?
Txhawm rau kom cov neeg siv khoom tau txais cov khoom yas tiav, cov khoom siv tau muab cov khoom tsim nyog rau kev ua haujlwm tshwj xeeb. Qhov no yog ua tiav los ntawm ntau hom kev ua cov khoom siv raw, uas tsim nyog rau txhua hom yas.
Extrusion txoj kev
Polyurethane muaj tag nrho cov khoom tsim nyog yuav tsum tau molded los ntawm nias. Ua li no, cov khoom siv raw yog rhuab mus rau lub xeev yas thiab pub rau lub extruder. Tom qab cov txheej txheem polymer dhau los ntawm theem shaping, nws yog txias thiab hardened. Cov khoom tuaj yeem ua rau hauv daim ntawv ntawm nplooj ntawv, rods, dov rau hauv yob los yog txiav rau hauv qhov khoob.
Txoj kev Casting
Yooj yim rau kev tsim cov khoom lossis qhov chaw nrog cov duab geometry complex. Cov txheej txheem yog yooj yim automated thiab tuaj yeem ua rau ntau qhov ntau. Yog tias cov khoom loj uas hnyav ob peb tons yog tsim los ntawm casting, cov txheej txheem yuav siv sij hawm qhov chaw ntawm lub workbench. Lub thav duab uas tsim cov duab yog sau nrog ib tug softened tshuaj uas tom qab hardens.
Txhawm rau ua kom cov txheej txheem ntau lawm, automated ntau lawm kab siv cov txheej txheem uas xa cov yas nyob rau hauv siab. Polyurethane yog siv rau cov hlau nto thiab ib txheej ntawm insulating polymer yog siv rau lub workpiece.
kev tiv thaiv
Siv daim ntawv, pas nrig lossis granular polyurethane ua qhov khoob. Cov khoom yog pub rau hauv xovxwm, uas yuam nws mus rau hauv pwm. Workpieces yuav machined txias los yog kub. Cov khoom tiav lawm muaj ib tug nruj me ntsis geometry. Raws li kev tsim khoom, cov txheej txheem yog automated thiab kev tswj kom zoo yog nqa tawm hauv tshuab hluav taws xob.
Filling txoj kev
Natural casting yog siv los tsim cov khoom zoo nkauj. Lub polymer yog poured rau hauv lub npaj thav duab thaum rhuab los yog diluted rau cov kua theem nrog reagents. Thaum cov yas hardens, nws mus ib txhis khaws nws cov kev teeb tsa thiab tsuas yog hloov tau los ntawm kev hloov kho nws. Txoj kev no tso cai rau koj los tsim ntau yam khoom sib xws.
Waw abPolyurethane recycling?
Polyurethane yog recyclable, tab sis nws yuav tsum nco ntsoov tias cov khoom poob qee yam ntawm nws cov khoom tseem ceeb, xws li tsis kam mus rau huab cua los yog kev cuam tshuam los ntawm ib puag ncig. Nyob rau hauv cov xwm txheej zoo, cov polymer tsis tawg rau ntau xyoo. Kev tiv thaiv rau UV rays thiab ozone tau ua rau cov khoom pov tseg los ua ib qho teeb meem ib puag ncig ntev.
Recycling teeb meem tuaj yeem daws tau los ntawm:
- Kub. Hydrocarbon-muaj cov ntaub ntawv kub hnyiab tau yooj yim, tab sis ib puag ncig muaj teeb meem additives raug tso tawm rau hauv qhov chaw;
- Sib tsoo. Cov ntaub ntawv pheej yig siv los ua cov khoom ntxiv hauv cov pob zeb lossis asphalt sib tov rau kev tsim kho;
-Remelt. Cov khoom siv tuaj yeem hloov kho thiab rov siv dua li cov khoom tshiab. Tab sis qhov teeb meem yog tias cov khoom sib txawv ntawm cov yas rov ua dua tshiab, uas ua rau nws nyuaj kom tau txais cov khoom nrog cov khoom tshwj xeeb;
- Glycolysis. Ib qho tshuaj lom neeg cov tshuaj tiv thaiv uas ua rau lub cleavage ntawm ntev molecular chains nyob rau hauv lub zog ntawm ib tug catalyst thaum rhuab. Lub resulting polymer yog ib tug luv luv-molecule compound uas yuav siv tau los ua ib feem nyob rau hauv zus tau tej cov xim thiab varnishes, raws li ib tug additive nyob rau hauv asphalt qhob mixs;
- Kev ua tshuaj lom neeg. Reagents yog siv los txiav cov saw hlau molecular kom tau cov khoom tsim nyog rau lwm yam kev siv.