Lub cev thiab tshuaj muaj zog ntawm polypropylene

1. Tsis muaj ntxhiab tsw, tsis muaj ntxhiab, thiab tsis muaj tshuaj lom. Nws yog hom lightest ntawm feem ntau siv cob;
2. Cov khoom siv zoo heev, suav nrog lub zog tensile, compressive zog, thiab hardness, zoo heev rigidity thiab khoov qaug zog kuj. Lub pob khawm txav tau ua los ntawm PP tuaj yeem tiv taus 7 × Folding thiab khoov ntau dua 107 zaug yam tsis muaj kev puas tsuaj, ua rau muaj kev cuam tshuam tsis zoo ntawm qhov kub thiab txias. Lub zog tensile ntawm PP feem ntau yog 21-39 MPa; dabtsi yog khoov lub zog 42-56 MPa, compressive zog 39-56 MPa, elongation ntawm tawg 200 feem pua ​​~ 400 feem pua, notch impact zog 2.2-5 kJ/m2, low-temperature notch impact zog {{12 } kJ/m2. Rockwell hardness R95 ~ 105;
3. Kev ua haujlwm kub zoo, kev siv tsis tu ncua tuaj yeem ncav cuag 110-120 degree;
4. Kev ruaj ntseg tshuaj zoo, tshwj tsis yog muaj cov oxidants muaj zog, nws tsis hnov ​​​​mob nrog cov tshuaj feem ntau; Nyob rau hauv chav tsev kub, cov kuab tshuaj tsis tuaj yeem yaj PP los ntawm 20 feem pua, tsuas yog qee cov halogenated tebchaw, muaj ntxhiab hydrocarbons, thiab kub kub point fatty hydrocarbons tuaj yeem ua rau nws o, thiab nws cov dej tsis kam yog qhov zoo tshwj xeeb;
5. Kev ua tau zoo ntawm cov hluav taws xob zoo, kev ua haujlwm zoo rau cov hluav taws xob hluav taws xob ntau zaus, thiab cov hluav taws xob rwb thaiv tsev zoo txawm tias nyob hauv qhov chaw ntub dej;
6. Vim tias muaj ntau cov methyl tertiary carbon atoms ntawm cov saw tseem ceeb ntawm PP, cov hydrogen ntawm tertiary carbon atoms raug rau cov pa tawm tsam, ua rau huab cua tsis zoo ntawm PP. Yog li ntawd, cov tshuaj antioxidants lossis ultraviolet absorbers yuav tsum tau ntxiv [16];
7. Cov nas tau muab tshuaj nrog 8g / kg rau 1-5 zaug thiab tsis pom muaj cov tsos mob lom lom. Cov nas tsuag tau nqus cov khoom decomposition ntawm polypropylene rhuab mus rau 210 ~ 220 degree 30 zaug, txhua lub sijhawm rau 2 teev, thiab tsim cov tsos mob ntawm kev khaus khaus rau lub qhov muag mucosa thiab ua pa sab sauv. Zoo ib yam li polyethylene, nws raug txwv tsis pub siv nws cov khoom siv los tuav cov zaub mov.