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你知道顏料分散劑對塗料的影響有多大嗎?

發布日期:2022/07/01

顏料應用在塗料、油漆等領域時,是需要很好的著色力、遮蓋力及色度的,如果顏料的分散穩定性不高就會出現較多的缺陷問題。為了讓顏料在塗料中發揮其優秀的品質就需要加入合適的顏料分散劑。因(yin)為(wei)顏(yan)料(liao)分(fen)散(san)劑(ji)中(zhong)含(han)有(you)錨(mao)固(gu)基(ji)團(tuan)和(he)溶(rong)劑(ji)化(hua)鏈(lian),錨(mao)固(gu)基(ji)團(tuan)和(he)顏(yan)料(liao)相(xiang)互(hu)作(zuo)用(yong),達(da)到(dao)吸(xi)附(fu)在(zai)顏(yan)料(liao)表(biao)麵(mian)的(de)效(xiao)果(guo)。溶(rong)劑(ji)化(hua)鏈(lian)則(ze)是(shi)提(ti)供(gong)穩(wen)定(ding)性(xing),使(shi)分(fen)散(san)體(ti)係(xi)處(chu)於(yu)穩(wen)定(ding)狀(zhuang)態(tai)。因(yin)此(ci)顏(yan)料(liao)分(fen)散(san)劑(ji)對(dui)塗(tu)料(liao)性(xing)能(neng)的(de)影(ying)響(xiang)可(ke)以(yi)說(shuo)是(shi)非(fei)常(chang)之(zhi)大(da)。

顏料分散劑

首先我們從細度來說,我們都知道光澤是衡量塗膜特性的一個指標,光澤越高,反射越強。對優質塗料的光澤來說,顆粒不能大於5微米的,最大3微米。油墨不能超過1微米。塗料中的大顆粒,要麼沒法有效分散,要麼絮凝,或者在配製過程中發生刺激起晶。

其qi次ci是shi透tou明ming,這zhe是shi塗tu膜mo的de一yi個ge特te性xing。透tou明ming性xing越yue高gao,越yue容rong易yi看kan到dao底di層ceng。遮zhe蓋gai力li越yue高gao,對dui底di層ceng遮zhe蓋gai力li越yue強qiang。光guang在zai表biao麵mian反fan射she和he通tong過guo的de數shu量liang決jue定ding了le塗tu料liao的de遮zhe蓋gai力li或huo透tou明ming性xing。聚ju合he物wu分fen散san劑ji通tong過guo影ying響xiang顏yan料liao粒li徑jing分fen布bu來lai提ti高gao透tou明ming度du。對dui鈦tai白bai粉fen,高gao折zhe射she率lv和he大da顆ke粒li可ke以yi有you效xiao地di反fan射she和he折zhe射she各ge種zhong波bo長chang的de光guang。聚ju合he物wu分fen散san劑ji的de添tian加jia可ke以yi提ti高gao表biao麵mian積ji,進jin一yi步bu提ti高gao遮zhe蓋gai力li。對dui於yu透tou明ming顏yan料liao,聚ju合he物wu分fen散san劑ji改gai善shan粒li徑jing分fen布bu讓rang更geng多duo光guang透tou過guo。

顏料分散劑

再者是相容,相容性之所以重要,是因為良好的相容性可以使塗料製造商生產用於多種不同類別樹脂產品的分散體係。 聚合物分散劑可以提高顏料濃度,不僅增加產量,而且減少從研磨色漿直到終產品中潛在的介質不相容性問題。

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著色強度也是不可忽視的影響問題,塗料著色強度表示色彩色相在應用表麵的強烈程度。 提高著色強度塗料就會看起來更加明亮,對顧客更有吸引力。 jiangdiyanliaodepingjunlijingkeyitigaozheseqiangdu。tigaoyanmosejiangzhongyanliaohanlianghuizengjializidexianghupengzhuang,tigaoyanliaodeposuilv,danshiyezengjialezhandu,jiangdileyanmodedongneng,shimoliaoxiaoqiuhuozhuziduiyanliaodeposuinenglixiajiang。shiyongjuhewufensanjikeyigaibianzhezhongbianhua。shiyongfensanjikeyiyanmogenggaoyanliaonongdu,shiliziposuigengjiaxunsu,tongshifangzhiyanmoguochengzhongdezhandushenggao。fensanjishigengxixiaodelizipengzhuangwendingxingzengjia,buxuning,congerchongfenfahuiqineizaidezheseqiangdu。

顏料分散劑

最後是揮發性有機物VOC,VOC或者叫揮發性有機物,是指體係中揮發到空氣中的有機溶劑。VOC越低,對空氣的潛在汙染越小。這就要求提高塗料的固含量。塗料的粘度是由溶劑、樹shu脂zhi和he顏yan料liao決jue定ding的de。普pu通tong的de低di固gu含han量liang塗tu料liao,顏yan料liao對dui粘zhan度du的de影ying響xiang沒mei有you樹shu脂zhi溶rong劑ji的de影ying響xiang大da。但dan是shi,高gao固gu含han量liang塗tu料liao溶rong劑ji較jiao少shao,樹shu脂zhi是shi低di粘zhan度du的de,這zhe樣yang一yi來lai,顏yan料liao的de影ying響xiang就jiu非fei常chang明ming顯xian了le。聚ju合he物wu分fen散san劑ji通tong過guo降jiang低di顆ke粒li之zhi間jian的de相xiang互hu吸xi引yin力li,顯xian著zhu降jiang低di顏yan料liao對dui粘zhan度du的de影ying響xiang。所suo以yi,對dui高gao固gu含han量liang塗tu料liao,加jia入ru分fen散san劑ji將jiang大da大da降jiang低di粘zhan度du,或huo者zhe說shuo,在zai粘zhan度du相xiang同tong的de條tiao件jian下xia,將jiang使shi用yong更geng少shao的de溶rong劑ji。



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