Preparation of ultra - fine dibasic lead phosphite powder by precipitation method 化學(xué)沉淀法制備超細(xì)二鹽基亞磷酸鉛粉體
Congo - red method was used to determine the thermal stabilization ability of products , which were consisted of dibasic lead phosphite and tribasic lead sulfate . the results showed that the nanometer stabilizer obviously increased the ability of thermal stabilization . in the same thermal stability level it could cut 25 % - 33 % amount of lead salt than using ordinary products 利用剛果紅法測(cè)試了納米二鹽和三鹽復(fù)合物的熱穩(wěn)定效果,結(jié)果表明納米鉛鹽能明顯地提高熱穩(wěn)定性,在保證pvc熱穩(wěn)定性的同時(shí)可較普通鉛鹽減少用量25 ? 33 ,同時(shí)討論了添加劑在加入時(shí)應(yīng)注意的問(wèn)題。
Tem was used to consecutively investigate the size and appearance of dibasic lead phosphite in the reaction process . it found that nanocrystal grain of lead oxide phosphite hydrate had favorite direction in the mlps method , many nanocrystal grain in near area would aggregate and assembled as nanowire , the diameter of the nanowire was about a crystal grain size and the length of nanowire could reach hundreds of nanometers , then they would gather to needle or bar like particles 利用tem對(duì)二鹽基亞磷酸鉛在反應(yīng)過(guò)程中粒子的大小、形貌進(jìn)行跟蹤觀察,并記錄下三個(gè)時(shí)間下的微粒照片,發(fā)現(xiàn)用微液相合成法制備的二鹽基亞磷酸鉛晶粒在生長(zhǎng)團(tuán)聚時(shí)存在取向規(guī)律,同一區(qū)域的晶粒會(huì)長(zhǎng)成一條納米線(xiàn),直徑有一個(gè)晶粒的大小,長(zhǎng)度可以達(dá)到幾百nm 。