Ukuphanda ukusetyenziswa kwe-polyethylene kwizixhobo zemidlalo

I-Polyethylene yi-resin ye-thermoplastic enokumelana okuhle kakhulu nobushushu obuphantsi, ubushushu bombane kunye nokumelana nokugqwala kwe-asidi kunye ne-alkali, esetyenziswa kakhulu kwimveliso nakwimpilo. Iimveliso ze-polyethylene zeentlobo ezahlukeneyo zisetyenziswa kakhulu kwicandelo lezixhobo zemidlalo. Phakathi kwazo, i-polyethylene fiber ingasetyenziselwa ukwenza i-racket netting kunye ne-artificial lawn court; i-polyethylene foam ingasetyenziselwa ukwenza i-gymnastics mat; i-HDPE board ingasetyenziselwa ukwenza i-buoy kunye ne-ice board. Kweli phepha, ukusetyenziswa kwe-polyethylene kwicandelo lezixhobo zemidlalo kuyajongwa.

1. I-polyethylene foam

  Kwintsimi yezemidlalo, i-polyethylene foam isetyenziswa ngokubanzi kwiindawo ezahlukeneyo zokukhusela kunye neengubo zomgangatho. East China University of Science and Technology iye yaphuhlisa uhlobo imichiza cross-linked polyethylene amagwebu imathiriyeli kunye ukomelela eliphezulu. Esi sixhobo sinokomelela okulungileyo, izinga eliphezulu lokuvalwa kweeseli, kunye nobomi benkonzo ende. Isetyenziswa ngokubanzi kwimidlalo, ukukhusela, ukupakisha, ukuthutha kunye nezinye iindawo. Indlela yokulungiselela yile ndlela ilandelayo: okokuqala, i-80.0 phr i-polyethylene ephantsi kunye ne-20.0 phr ethylene propylene diene irabha ye-monomer ifakwe kwi-mixer yangaphakathi yokuxuba kwangaphakathi. Emva kokuba i-resin iyancibilika kwaye ixutywe, i-10.0 phr azo dimethylphthalamide kunye ne-2.0 phr zinc oxide njenge-agent ye-foam yongezwa kwi-mixer yangaphakathi yokuxuba kwangaphakathi kwimizuzu ye-3; Emva koko, yongeza i-0.5 phr crosslinking agent diisopropylbenzene peroxide kunye ne-cross-linking aid trimethylolpropane trimethyl acrylate kwi-mixer yangaphakathi yokuxuba kwangaphakathi kwi-2 min, kwaye uzikhuphele ukucocwa okuvulekileyo. Ubushushu bokuxuba kwangaphakathi kunye nokuxuba okuvulekileyo kuya kulawulwa kwi-100 ~ 130 ℃. Imixube efunyenwe kwi-mill evulekileyo iyachithwa kwaye yongezwa kwi-twin-screw extruder ye-granulation. Ubushushu yi-100 ~ 125 ℃, kwaye isantya se-screw yi-30 r/min. Iigranule zongezwa kwi-screw extruder enye ukukhupha ishidi kunye nobukhulu be-2 mm kunye nobubanzi be-400 mm, ubushushu ngu-100 ~ 125 ℃, kunye nesantya se-screw yi-30 r / min. Amaphepha adityanisiwe kwaye afakwe amagwebu kwisithando somlilo esinezigaba ezintathu. Amaqondo obushushu obushushu be-1 ~ 3 amacandelo yi-140 ℃, 160 ℃ kunye ne-190 ℃ ngokulandelanayo, kunye nesantya sokuhanjiswa kwebhanti ye-mesh yi-1.5 m / min. Izinto ezifakwe amagwebu zipholile, zibunjwe kwaye zigqitywe yi-roller yokupholisa kunye ne-traction roller ukufumana umkhiqizo ogqityiweyo kunye nobubanzi be-820 mm, ubukhulu be-5 mm kunye nobuninzi be-0.08 g / cm3. Izinga lokubuyiswa kwakhona kweemveliso ezigqityiweyo yi-55%, engasetyenziselwa ngokubanzi ukupakisha, imidlalo kunye nokukhusela, ukuthutha kunye nezinye iindawo.

  Iimethi zomgangatho weplastiki ezisetyenziswa kwi-gymnastics ziquka i-polyethylene kunye ne-PVC. Umqamelo wePVC wenziwe ngokubanzi ngePVC ethambileyo. Ithambile kwaye yomelele, kodwa ivakala ithambe. Emva kokuyisebenzisa ixesha elithile, into emhlophe iya kuvela kwisingxobo. Abadlali bezemidlalo bavame ukuba nefuthe elinamandla emhlabeni ngexesha lokuziqhelanisa, kwaye umphezulu waloo mats omgangatho uxhomekeke kwi-creases. Iimethi zomgangatho we-polyethylene zi-waxy kwaye zithambile kwaye azigugi xa ziphathwa, kodwa ezi zixhobo zihlala zigwebu ngokukhululeka. Ukubila kweembaleki kuya kungena kwimigangatho yomgangatho ngexesha lokusetyenziswa, kwaye abayi koma emva kokuxutywa. I-Jiangyin Civilized Sports Plastic Co., Ltd. iye yaphucula umgangatho we-gymnastics mat. I-mat yomgangatho we-gymnastics ephuculweyo iqulethe i-surface layer kunye ne-core layer: i-surface layer yi-ethylene vinyl acetate copolymer enobunzima be-0.5 ~ 3.0 mm, i-core layer ye-PVC kunye nobukhulu be-10 ~ 30 mm; kunye nomqolo wesibini umaleko yi-polyethylene enegwebu kakhulu kunye nobukhulu be-5 ~ 20 mm. Uluhlu lwangaphezulu ludibaniswa ngokusondeleyo kunye nomgangatho ongundoqo. I-composite multilayer gymnastics pad inokudlala indima enhle yokunciphisa. Emva kwexesha elide lokusetyenziswa, umphezulu akulula ukubonakala i-creases kunye ne-seepage yamanzi, inokusulwa ngamanzi, kwaye inobomi obude benkonzo, efanelekileyo kuqeqesho lwe-gymnasts.

2. Iphepha le-polyethylene

Iphepha leplastiki lePolyethylene , ngakumbi iphepha lepolyethylene elinobunzima obuphezulu kakhulu, lingasetyenziselwa ukwenza umhlaba wokutyibiliza, i-apron ye-skating rink, umhlaba we-roller skating rink, i-slide of amusement park, i-slide, i-sled skateboard, kwaye ikwasetyenziswa kakhulu kwicandelo lokuhamba. I-Shanxi Zhongke Tiancheng Science and Technology Development Co., Ltd. yenza iphepha le-polyethylene elinobunzima obuphezulu kakhulu ngokubumba ngokongeza i-0.3% ye-polymer wax kunye ne-0.2% ye-stearic acid flow improver kwi-polyethylene enobunzima obuphezulu kakhulu. Iimeko zokusebenza kwenkqubo yokubumba: uxinzelelo olushushu yi-51MPa, ubushushu yi-200 ℃, kwaye ixesha yimizuzu engama-90; Uxinzelelo olubandayo yi-22 MPa, ubushushu yi-65 ℃, kwaye ixesha yi-210 min. I-Shandong Baoerpu Industry Co., Ltd. ilungiselele iphepha le-polyethylene elinobunzima obuphezulu kakhulu kunye nokumelana nemozulu ephezulu, eliqulathe i-masterbatch yombala eyi-0.3%, i-antioxidant eyi-1010.6%, i-Tinuvin 327/328 0.5% ye-ultraviolet light absorber, i-Chimassorb2020 0.5% ye-hindrable amine light stabilizer, kwaye izinto ezisisiseko ziyi-polyethylene powder enobunzima obuphezulu kakhulu kunye ne-viscosity enobunzima obuphakathi be-molecule obungaphezulu kwe-150 x 10 ^ 4. Indlela yokulungiselela yile ilandelayo: yongeza izinto kwi-mixer kwaye uzixube imizuzu engama-20, uze uzibeke ngokuthe tyaba kwindawo yokubumba yomatshini wokubumba, unyuse ubushushu bufike kwi-260 ℃, ugcine uxinzelelo kwi-6 MPa, kwaye uqhubeke iiyure ezi-4 de izinto zinyibilike ngokupheleleyo. Pholisa indawo yokubumba kwaye unyuse uxinzelelo ukuya kwi-7 MPa ukuze wenze iphepha le-polyethylene elinobunzima obuphezulu kakhulu. Iphepha le-polyethylene elinobunzima obuphezulu kakhulu le-molecular elinokumelana nemozulu ephezulu linokufunyanwa ngokunciphisa uxinzelelo kunye nokususa. Olu hlobo lwepleyiti lunokususwa umbala yiQiaoa, kwaye lufanelekile ukuvelisa izixhobo zokuncedisa ulwandle, ii-buoys zemidlalo yamanzi, njl. Nangona kunjalo, ishidi le-polyethylene elinobunzima obuphezulu kakhulu elilungiselelwe ngeendlela eziqhelekileyo laqala ukususwa umbala emva kweminyaka emi-3.

I-skateboard eqikelelweyo ingafakwa kwibala lemidlalo okanye emoyeni ovulekileyo, enezibonelelo zexabiso eliphantsi, ukuqhaqha okushenxisekayo kunye nokufumaneka kuzo zonke iixesha zonyaka. I-Beijing Zhong'ao Jinmiao Cultural Goods Co., Ltd. isebenzisa i-polyethylene, i-polydimethylsiloxane kunye ne-nano antioxidant N, N '- II (β Polyethylene ice board yalungiswa nge-mononaphthyl) p-phenylenediamine, isanti ye-nano quartz, i-propylene glycol methyl ether acetate kunye neepigments. I-Henan Jinhang Engineering Plastics Co., Ltd. ilungiselele iipleyiti ze-icing ze-polyethylene (UHMWPE) ze-ultra-high relative molecular weight (UHMWPE) ice simulation plates zisebenzisa i-polyethylene ye-ultra-high molecular weight, i-coupling agent, i-lubricant, ii-glass beads okanye i-talc powder, i-fluorescent whitening agent, i-ultraviolet light absorber, i-antioxidant B215, ii-lubricant microspheres, ii-mineral oil microspheres, kunye ne-nucleating agent. I-Rizhao Junqian Outdoor Products Co., Ltd. isebenzisa ii-bolts ukulungisa nokudibanisa iipleyiti. Ngokwandisa okanye ukunciphisa inani leepleyiti, ubungakanani bendawo bungalawulwa. Ingasetyenziswa njengendawo yokutyibiliza ebaleni kunye nedama lokudada. Kulula ukuyiqhekeza nokuyihambisa. I-Shandong Baoerpu Industrial Co., Ltd. ikwaphuhlise indlela yokuwelda ngaphandle komthungo kwamaphepha e-polyethylene anobunzima obuphezulu kakhulu. Okokuqala, i-butt joint kufuneka icutshungulwe, kwaye imiphetho yamaphepha e-polyethylene anobunzima obuphezulu kakhulu aza kudityaniswa nge-butt joints kufuneka ibekwe ngokulandelelanayo nge-gradient engama-40 °; Faka imiqolo emibini kwizixhobo zokuwelda ezishushu, kwaye uzalise imiqolo nge-polyethylene enobunzima obuphezulu kakhulu equlethe i-1.6% yenxalenye yobunzima bezithako kunye ne-0.3% yenxalenye yobunzima be-masterbatch yombala, ephezulu nge-10 mm kunomphezulu weplate; Izixhobo zokuwelda ezingenamthungo zisetyenziselwa ukufudumeza nokuxinzelela. Ubushushu kunye noxinzelelo ziyafana nezo zikwinkqubo yokulungiselela iphepha le-polyethylene enobunzima obuphezulu kakhulu kwaye zihlala imizuzu engama-60. Ekugqibeleni, ipholiswa ngokwendalo kwaye ixinzelelwe ukuya kwi-12 MPa. Emva kwemizuzu eli-120, iyancitshiswa kwaye irhoxiswe. Inkangeleko kunye neempawu zomzimba zeepleyiti kwindawo edibeneyo ye-butt kufuneka zihambelane neepleyiti ze-polyethylene ezinobunzima obuphezulu kakhulu.

3. Isiphelo

  Iimveliso ze-polyethylene kwiifom ezahlukeneyo zisetyenziswa ngokubanzi kwibala lezemidlalo, elinokuphucula ukuqina, ukuxhathisa impembelelo, ukumelana nobushushu, ukusebenza kwe-vibration absorption yezixhobo zemidlalo. Akunakwenza nje ukuba abadlali bazive belungile ngemidlalo, kodwa bakhusele abagijimi, bandise ubomi benkonzo yezixhobo zemidlalo kunye nokunciphisa iindleko zokuvelisa.