超細滑石粉與氣相二氧化矽在塗料中的協同作用
在塗料配方的中塗和底漆配方調試時,為了保障產品儲存、施工的穩定性,塗層表麵的平整性,改善塗層的耐熱、耐化學和耐腐蝕等性能,同時有效控製成本;通tong常chang會hui采cai用yong兩liang種zhong或huo多duo種zhong粉fen體ti複fu配pei的de調tiao試shi方fang式shi,一yi般ban的de有you采cai用yong超chao細xi滑hua石shi粉fen與yu氣qi相xiang二er氧yang化hua矽gui協xie同tong搭da配pei的de調tiao試shi方fang式shi,以yi此ci滿man足zu對dui塗tu料liao成cheng品pin的de技ji術shu要yao求qiu。
氣相二氧化矽在塗料、油墨中常做作為流變助劑使用,而且還具有防沉降、抗結塊、消光以及物理防腐功能;qibiaomiancunzaidaliangguichunjian,kezishenhuoyujicaixingchengqingjian,xingchengleisiwangzhuangdedihejiegou,kejiaohaodeduiyanliaohuozheqitatianliaoqidaowendingchengtuodezuoyong,zuzhiqixiachenhuozhejiekuai。tongshiqixiangeryanghuaguixiyouzhijiaogaojuyoumingxianzengchouxiaoying,xuanzeheshixinghaodeqixiangeryanghuagui,jiaoxiaodetianjialiangxiakeyouxiaotigaotuliaozhandu,zengjiayanliaohuozhetianliaozaiwendingzhouqineichendiansuoshoudaodezuli,qidaofangchenhuofangzhijiekuaidexiaoguo。

超chao細xi滑hua石shi粉fen具ju有you較jiao好hao的de增zeng稠chou效xiao應ying,同tong氣qi相xiang二er氧yang化hua矽gui協xie同tong使shi用yong時shi,能neng輔fu助zhu氣qi相xiang二er氧yang化hua矽gui形xing成cheng更geng多duo支zhi鏈lian的de締di合he結jie構gou,有you效xiao提ti高gao氣qi相xiang二er氧yang化hua矽gui增zeng稠chou、防沉等效果的利用率;同時由於超細滑石粉特有的二氧化矽結構,具有自潤濕性分散性較好,能有效分散至客戶需求的細度;增進塗料的光潔度和幹膜的平整度。

超細滑石粉具有一定的粒徑分布寬度,同時擁有矽酸鹽係特有的消光屬性;氣相二氧化矽擁有較優異的消光特性,粉體粒徑小,可直接應用於啞光塗層體係,如底漆、中塗漆和部分啞光麵漆;兩者協同使用時粉體空隙鑲嵌性更好,能發揮出更佳的消光特性;另外兩者主要成分為二氧化矽,二氧化矽硬度高耐磨性好,還有促進塗層耐刮擦、耐磨、增滑等功能。


在防腐塗層的底漆中腐蝕發生時,即潮氣以及鈉、鈣gai等deng離li子zi滲shen透tou並bing穿chuan過guo保bao護hu性xing塗tu層ceng的de過guo程cheng。若ruo使shi用yong極ji性xing防fang沉chen降jiang劑ji或huo者zhe填tian料liao,相xiang當dang於yu為wei水shui分fen和he各ge類lei離li子zi向xiang金jin屬shu表biao麵mian遷qian移yi提ti供gong通tong道dao,積ji聚ju在zai金jin屬shu表biao麵mian的de水shui分fen會hui逐zhu步bu向xiang塗tu層ceng內nei部bu滲shen透tou,並bing漸jian漸jian破po壞huai塗tu層ceng的de附fu著zhe力li,進jin而er引yin起qi滲shen透tou性xing水shui泡pao,使shi得de更geng多duo金jin屬shu表biao麵mian暴bao露lu出chu來lai,加jia快kuai腐fu蝕shi速su度du。同tong時shi,離li子zi的de存cun在zai會hui大da幅fu增zeng加jia界jie麵mian上shang的de電dian離li強qiang度du,加jia快kuai腐fu蝕shi速su度du。高gao純chun度du的de超chao細xi滑hua石shi粉fen本ben身shen具ju有you較jiao好hao的de疏shu水shui特te性xing,同tong時shi搭da配pei疏shu水shui型xing的de氣qi相xiang二er氧yang化hua矽gui,能neng有you效xiao封feng閉bi潮chao氣qi和he離li子zi向xiang金jin屬shu表biao麵mian遷qian移yi的de通tong道dao,因yin而er,與yu處chu理li型xing黏nian土tu等deng其qi他ta類lei型xing的de觸chu變bian劑ji以yi及ji未wei經jing完wan全quan疏shu水shui處chu理li的de氣qi相xiang二er氧yang化hua矽gui相xiang比bi,高gao純chun度du的de超chao細xi滑hua石shi粉fen複fu合he疏shu水shui型xing氣qi相xiang二er氧yang化hua矽gui的de組zu合he,能neng有you效xiao緩huan解jie腐fu蝕shi的de發fa生sheng。


另ling外wai超chao細xi滑hua石shi粉fen由you本ben身shen特te有you的de片pian型xing層ceng狀zhuang結jie構gou,能neng賦fu予yu防fang腐fu塗tu層ceng一yi定ding的de物wu理li屏ping蔽bi效xiao果guo,並bing可ke像xiang氣qi相xiang二er氧yang化hua矽gui一yi樣yang進jin行xing進jin一yi步bu的de疏shu水shui改gai性xing處chu理li,加jia強qiang其qi疏shu水shui屬shu性xing,更geng好hao的de協xie同tong氣qi相xiang二er氧yang化hua矽gui改gai善shan防fang腐fu塗tu層ceng的de綜zong合he耐nai腐fu蝕shi性xing。
綜zong上shang超chao細xi滑hua石shi粉fen擁yong有you和he氣qi相xiang二er氧yang化hua矽gui類lei似si的de物wu理li和he化hua學xue屬shu性xing,且qie吸xi油you值zhi較jiao低di於yu氣qi相xiang二er氧yang化hua矽gui,添tian加jia比bi例li相xiang對dui較jiao高gao,可ke減jian少shao一yi定ding量liang的de氣qi相xiang二er氧yang化hua矽gui使shi用yong,同tong樣yang可ke增zeng進jin塗tu層ceng一yi定ding的de耐nai磨mo和he耐nai刮gua擦ca性xing屬shu性xing,同tong時shi賦fu予yu啞ya光guang效xiao果guo;對於塗料粘度體係也能起到較好的增稠和防沉效應;在工業、防腐等塗料配方設計時,常會選用兩者協同使用的添加方式輔助塗料配方的最終成型。
2023-09-28
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