Hydroxypropyl starch ether (HPS) is a key functional additive in the building materials industry, widely used in dry mortars, putties, tile adhesives, and other products. It significantly improves workability and material stability.
Main applications and functions are as follows:
1. Improved Workability
Anti-sagging and anti-sag: HPS effectively increases the yield value of mortar, enhances anti-slip ability during vertical surface construction, and prevents material slippage, especially suitable for thick-layer plastering and mechanical spraying.
Good lubricity: Adding it makes troweling smoother, reduces worker fatigue, and improves the feel of trowel operation.
Extended open time: It can extend the working time of tile adhesive to 20-30 minutes (E-grade standard), providing ample adjustment window for complex tiling.
2. Optimized Material Performance
Enhanced water retention: Reduces the risk of cracking caused by excessive water absorption by the substrate, especially performing excellently in high-temperature and dry environments.
Improved adhesion: Improves the adhesion between the mortar and the substrate, reducing the risk of delamination and peeling.
Synergistic effect: Often used in combination with hydroxypropyl methylcellulose ether (HPMC), it can reduce the amount of HPMC used by about 30%, reducing costs while achieving complementary thickening and water retention.
