水性羟基丙烯酸树脂
一、产品技术指标:
外观·························乳白色乳液 (目视)
固含·························42±2.0%(120℃/30min)
PH值·························7-8 (pH计)
羟值··························78mgKOH/g (占固体树脂,理论值)
粘度··························≤1000mPa.s(旋转粘度计)
二、树脂特性:
本产品为含羟基聚丙烯酸分散体,可使用水稀释至施工粘度,该产品粘度随PH变化而变化。该产品通过与脂肪族的聚异氰酸酯的混合,可制备高光泽面漆,干性很好,可在室温下快速干燥或在80°C下强制干燥。固化的漆膜具有较高的光泽、硬度、极限膜厚和较好的耐水性。
该树脂具有优良的颜料湿润性和高剪切稳定性,可以与颜填料一起磨浆。
三、产品性能测试:
光泽(60°)高光类
| >90
| 附着力(划格)
| 0级
|
表干min(23°)
| 15min
| 附着力(划圈)
| 1级
|
实干25°/h
| 4h
| 耐水性(23°)
| 480h
|
烧烤65°/min
| 65°,30分
| 耐碱(25°0.1N NaOH)
| 24h
|
适用期(25°)
| 4h
| 耐酸(25°0.1N H2SO4)
| 24h
|
硬度(铅笔)
| 1H—2H
| 耐汽油
| 24h
|
柔韧性/mm
| 1级
| 耐人工老化
| 1000h失光30%
|
耐冲kg*cm
| 50
| Q-sun,1200h
| 1级
|
耐热性
| 105°
| 持续24h
| 24h
|
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