聚乙烯(UHMWPE)”制造。在常温下,PVF2对卤素、卤代烃、强氧化剂、沸酸、
碱等多种有机溶剂都有良好耐蚀性;UHMWPE对非氧化性酸(稀硫酸、硝酸及浓度
较大的盐酸、磷酸、氢氟酸、甲酸、乙酸)、氨和胺及各种碱、盐溶液都有良好
的耐蚀性,两种材料都不耐强氧化性酸的腐蚀。氟合金泵的外壳为金属材料,
有足够的强度承受管道以及外界的机械冲击。传动功率3kW以下的采用全氟结构。
Allflow-throughpartsofCQB-Ffluorineliningmagneticpumparemade
ofPVF2andUHMWPE.Undernormaltemp.,PVF2hasafinecorrosion
resistancetomanyorganicsolventslikehalogen,halogenated
hydrocarbon,strongoxidant,boilingacidandalkali;UHMWPEhasa
finecorrosionresistancetoinoxidableacid(dilutesulfuricacid,
nitricacidandlargeconcen-trationhydrochloricacid,phosphorus
acid,hydrofluoricacid,formicacidandaceticacid),ammonia,
amineandvariousalkaliandsaltysolutions.Bothmaterialscan't
resistthecorrosionofstrongoxidableacid.Thefluorinealloy
pumphasametalshellwithenoughtenacitytoaffordthemechanical
impactfromthepipelineandoutside.Thosewithtransmissionpower
below3KWadoptfullfluorinestructure.