SL919硫铝水泥缓凝剂（粉剂）
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产品简介
SL919是一种新型的硫铝酸盐水泥缓凝剂，属于粉末状高分子聚合物，主要用于延缓硫铝水泥水化、以及延长凝结时间，解决硫铝水泥凝结太快不易操作等问题。SL919与硫铝酸盐水泥中的碱性物质不会产生化学反应。SL919在干粉砂浆中的储存稳定性良好，含SL919的干粉产品在规定的包装储存条件下，性能稳定性可保持三个月以上。
SL919主要用于取代酒石酸、柠檬酸等传统酸类缓凝剂。用酸类缓凝剂与硫铝水泥混合制成的干粉产品，其缓凝性能会随存放时间而失效，造成干粉产品流动度损失过快，影响施工时间。
Sulfo-aluminate cement（SAC）is one of the main componenets of non-shrink grout products. In order to ensuring workability of the grouts, a retarder stable in the powdery mixture of various of cements is necessary for making prepacked non-shrink grouts. SL919 is a powdery retarder for various of cements including in sulfo-aluminate cement . It is polymer matter.
It delays hydration and setting time of various of cements, including in SAC, OPC (Ordinary Portland Cement) and HAC (High Aluminium Cement) and so ensures the prepacked grouts workable in the designated time. Its effectiveness is not influenced by the surrounding cement powders. SL919 is stable in prepacked drymix mortar. The shelf life of prepacked drymix mortar is commonly known as 3 months. SL919 can ensure the drymix stable during the shelf life.
SL911 is intended to replace widely used acid retarders especially for SAC & HAC, such as tartaric acid and citric acid.
The retarding performance of drymix made of the traditional acid retarder fails with the storage time, resulting in rapid loss of flow of a drymix , and leading to insufficient construction time. The performance of a prepacked drymix mortar made of acid retarder becomes poorer with increase of storage time. It loses the working time significantly in a few days after the prepacked drymix mortar is packed. SL919 resolves this issue. The working time of prepacked mortar does not change with increase of storage time when prepacked dried mortar made of SL919 instead of an acid retarder.
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技术指标
性能特点
1．本品具有较好的延缓硫铝水泥凝结时间的作用；
2．本品在作为缓凝剂的同时，也具有一定的碱水效果，使用时可适当降低减水剂的用量；
3．在硫铝酸盐水泥特殊的碱性环境中储存稳定；
4．保证体系缓凝效果的情况下不会降低硫铝水泥体系强度；
5．使用效果优异，解决了其他酸类缓凝剂（如酒石酸、柠檬酸等）会与硫铝酸盐水泥产生固体表面的酸碱反应而逐步失效的问题；
6．与其它添加剂相容性好。
包装与贮存
1. 包装：25kg复合塑料袋或纸板桶包装，内加塑料袋防潮。
2. 贮存：本产品避免阳光直射和雨淋，在阴凉干燥通风处保存。
3. 储存稳定性可保持12个月。
4.当开封后，产品应及时使用，用不完的要及时密封，防止产品吸湿变质。
注意事项
1.本产品无毒，但不可食用。
2.使用时对环境未发现有污染，但丢弃或排放时应符合当地环保条例的要求。
3.当接触到人的身体和眼睛时，应尽快用清水冲洗，对部分人体造成过敏现象时应及时就医治疗 。
4.本产品的包装物不可随便丢弃，应符合当地环保条例的要求。