浙江化工
浙江化工
절강화공
ZHEJIANG CHEMICAL INDUSTRY
2014年
7期
4-8
,共5页
石膏保温材料%复合石膏防水剂%MMA壳层乳液%含氟壳层乳液%添加剂
石膏保溫材料%複閤石膏防水劑%MMA殼層乳液%含氟殼層乳液%添加劑
석고보온재료%복합석고방수제%MMA각층유액%함불각층유액%첨가제
gypsum insulation materials%gypsum composite waterproofing agents%MMA latex shell%shell fluorine-containing emulsion%additives
为解决石膏材料易吸水的问题，采用核壳型乳液对传统石膏进行改性，改变石膏制品内表面的孔隙结构，降低石膏样品的吸水率，提高其抗压、抗折强度及孔隙率，减少石膏制品的导热率。研究了在不同添加量下，各添加剂对石膏密度、吸水率、力学性能(抗压强度、抗折强度)和导热率的影响，得到的最佳配比为：氟壳层乳液含量为5%，减水剂为总量的0.5%，缓凝剂的取量为0.2%时，所制备的石膏防水效果为最佳。
為解決石膏材料易吸水的問題，採用覈殼型乳液對傳統石膏進行改性，改變石膏製品內錶麵的孔隙結構，降低石膏樣品的吸水率，提高其抗壓、抗摺彊度及孔隙率，減少石膏製品的導熱率。研究瞭在不同添加量下，各添加劑對石膏密度、吸水率、力學性能(抗壓彊度、抗摺彊度)和導熱率的影響，得到的最佳配比為：氟殼層乳液含量為5%，減水劑為總量的0.5%，緩凝劑的取量為0.2%時，所製備的石膏防水效果為最佳。
위해결석고재료역흡수적문제，채용핵각형유액대전통석고진행개성，개변석고제품내표면적공극결구，강저석고양품적흡수솔，제고기항압、항절강도급공극솔，감소석고제품적도열솔。연구료재불동첨가량하，각첨가제대석고밀도、흡수솔、역학성능(항압강도、항절강도)화도열솔적영향，득도적최가배비위：불각층유액함량위5%，감수제위총량적0.5%，완응제적취량위0.2%시，소제비적석고방수효과위최가。
To solve the water absorption of gypsum samples, this paper used the core-shell emulsion to modify the traditional gypsum. The pore structure of the internal surface was changed to reduce the water ab-sorption. The anti-cracking strength, bending strength was increased. The interval porosity was improved and thermal conductivity was reduced. The influence of several different additives on density, water absorption, mechanical properties (compressive strength, flexural strength) and thermal conductivity were also studied in this paper. The optimized formulation was as follows: fluoride content in shell emulsion was 5%, total water-reducing agent was 0.5%, the check amount of retarder was 0.2%.
