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纖維素對水包砂多彩粒子形態及多彩涂料仿石效果的影響

作者:曾憲偉1,2,劉戌2,王春偉2,張雪芹3,楊輝1

關鍵字:纖維素,對,水包,砂,多彩,粒子,形態,及,涂料,

 
(1.浙江大學 材料科學與工程學院,浙江 杭州  310027;2.浙江豐虹新材料股份有限公司,浙江 湖州  313300;
3.中國新型建材設計研究院有限公司,浙江 杭州  310022)
    摘要:在平面型水包水多彩涂料的基礎上,向分散相和連續相乳液中加入適量的石英砂,利用硅酸鎂鋰保護膠與纖維素之間的凝膠化反應,采用斯托默黏度計、流變儀研究了不同纖維素種類及用量對分散相流變性、彩粒形態、貯存穩定性的影響,分析了其對水包砂多彩涂料仿石效果的影響。結果表明:不同纖維素種類及用量會顯著影響分散相在中低剪切下的黏度;在相同用量條件下,添加締合型纖維素HE-10K分散相的觸變性較添加HS100000的大,在造粒時彩點更圓潤飽滿,凹凸質感更強,碎點更少,仿石效果更佳;采用羥乙基纖維素HS100000和疏水改性羥乙基纖維素HE-10K復配時,制備的多彩涂料儲存穩定性良好。
    關鍵詞:水包砂多彩涂料;硅酸鎂鋰;纖維素;穩定性;仿石效果
    中圖分類號:TU56+1.62        文獻標識碼:A        文章編號:1001-702X(2020)11-0055-05
 
Effect of cellulose on the morphology of color particles and the effect of stone imitation in sand-in-water multi-color coatings
ZENG Xianwei1,2,LIU Xu2,WANG Chunwei2,ZHANG Xueqin3,YANG Hui1
(1.School of Material Science and Engineering,Zhejiang University,Hangzhou 310027,China;
2.Zhejiang Fenghong New Material Co. Ltd.,Huzhou 313300,China;
3.CNBM Design & Research Institute Co. Ltd.,Hangzhou 310022,China)
    Abstract:Based on planar w/w multi-color paint,an appropriate amount of quartz sand was added to the disperse phase and continuous phase emulsion. The effects of different cellulose type and dosages on the rheology of the disperse phase,the morphology and storage stability of color particles were studied by the gelation reaction of magnesium lithium silicate as protective gel and cellulose using Stormer viscometer and rheometer,and its influence on the imitating effect of sand-in-water colorful paint was analyzed. The results show that the cellulose type and dosage will greatly affect the viscosity of the disperse phase at middle and low shear. Under the same dosage conditions,the thixotropy of the disperse phase of the associative cellulose HE-10K is greater than that of the HS100000,the color dots are more round and full,the uneven texture is stronger,the broken dots are less,and the stone-like effect is better. When compound using hydroxyethyl cellulose HS100000 and hydrophobically modified hydroxyethyl cellulose HE-10K,the prepared colorful paint has good storage stability.
    Key words:sand-in-water multi-color coating,magnesium lithium silicate,cellulose,stability,stone imitation effect

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