SL919硫鋁水泥緩凝劑（粉劑）
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產品簡介
SL919是一種新型的硫鋁酸鹽水泥緩凝劑，屬于粉末狀高分子聚合物，主要用于延緩硫鋁水泥水化、以及延長凝結時間，解決硫鋁水泥凝結太快不易操作等問題。SL919與硫鋁酸鹽水泥中的堿性物質不會產生化學反應。SL919在干粉砂漿中的儲存穩定性良好，含SL919的干粉產品在規定的包裝儲存條件下，性能穩定性可保持三個月以上。
SL919主要用于取代酒石酸、檸檬酸等傳統酸類緩凝劑。用酸類緩凝劑與硫鋁水泥混合制成的干粉產品，其緩凝性能會隨存放時間而失效，造成干粉產品流動度損失過快，影響施工時間。
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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技術指標
性能特點
1．本品具有較好的延緩硫鋁水泥凝結時間的作用；
2．本品在作為緩凝劑的同時，也具有一定的堿水效果，使用時可適當降低減水劑的用量；
3．在硫鋁酸鹽水泥特殊的堿性環境中儲存穩定；
4．保證體系緩凝效果的情況下不會降低硫鋁水泥體系強度；
5．使用效果優異，解決了其他酸類緩凝劑（如酒石酸、檸檬酸等）會與硫鋁酸鹽水泥產生固體表面的酸堿反應而逐步失效的問題；
6．與其它添加劑相容性好。
包裝與貯存
1. 包裝：25kg復合塑料袋或紙板桶包裝，內加塑料袋防潮。
2. 貯存：本產品避免陽光直射和雨淋，在陰涼干燥通風處保存。
3. 儲存穩定性可保持12個月。
4.當開封后，產品應及時使用，用不完的要及時密封，防止產品吸濕變質。
注意事項
1.本產品無毒，但不可食用。
2.使用時對環境未發現有污染，但丟棄或排放時應符合當地環保條例的要求。
3.當接觸到人的身體和眼睛時，應盡快用清水沖洗，對部分人體造成過敏現象時應及時就醫治療 。
4.本產品的包裝物不可隨便丟棄，應符合當地環保條例的要求。