Starch Ether in Portland Cement
I. Definition and Functional Overview of Starch Ether
- Starch ether is a type of etherified starch produced through chemical reactions using raw materials such as potato, corn, and tapioca. In building dry-mix mortars, starch ether primarily functions as a thickener, effectively enhancing the anti-sag properties of mortar, reducing application viscosity, improving workability, and extending open time.
II. Research Objective and Experimental Data
This article briefly presents the thickening performance of starch ether in Portland cement systems. The experimental data are shown in the following table:
| Test No. | Origin | Dosage / ‰ | Water Addition / % | Consistency / mm | Remarks |
| 1# | / | 0 | 50 | 150 | |
| 2# | China | 0.3 | 50 | 121 | |
| 3# | China | 0.3 | 50 | 117 | SE-302 |
| 4# | China | 0.3 | 50 | 108 | SE-501 |
| 5# | China | 0.3 | 50 | 85 | SE-801 |
| 6# | Netherlands | 0.3 | 50 | 90 | |
| 7# | Netherlands | 0.3 | 50 | 120 | |
| 8# | Austria | 0.3 | 50 | 103 | |
| 9# | Germany | 0.3 | 50 | 96 | |
| 10# | Germany | 0.3 | 50 | 89 | |
| 11# | Germany | 0.3 | 50 | 120 |
Note: 302, 501, and 801 are our company’s products.
III. Experimental Results Analysis
Starch ethers of European origin generally demonstrate good thickening effects, with some samples exhibiting significant thickening performance;
Conventional starch ethers show slightly lower thickening effectiveness compared to European products; Our manufactured starch ether SE-302 is suitable for tile adhesives, SE-501 for cement-based putty products, and SE-801 for gypsum products.
We welcome customers with relevant needs to inquire about cooperation. We will provide professional technical support and product services.
Drymix mortar Tech+
Tile adhesive open time
This article tests cellulose ethers (MP 17N01, ME 14N02, etc.) with varying viscosities and dosages to verify their effect on the open time of C1 tile adhesive, providing experimental data and conclusions… Continue reading
Dry-mix mortar shrinkage reducing admixture
This article details how Shrinkage Reducing Admixtures (SRAs) inhibit shrinkage and cracking in dry-mix mortars, covering mechanisms, advantages, powdered product selection, application guidelines, a self-leveling compound reference formula, and recommends SidleyChem’s high-performance SR-… Continue reading
Silicone hydrophobic powder weathering test
This article presents a 4-month outdoor weathering test on mortar containing silicone hydrophobic powder (e.g., WS80/WS90) and RDP. Results show surface effect variation but lasting internal hydrophobicity, with SidleyChem’s recommended product portfolio… Continue reading
ETIRS adhesive powder additives
This article analyzes the formulation technology of bonding powder for EPS Insulation Rendering Systems (ETIRS), detailing the functions of components like cellulose ether, RDP, PVA, and fibers. It presents targeted high-performance additive solutions from SidleyChem (e.g., HEMC, RDP, PEO) to help develop stable and reliable insulation mortar products… Continue reading
ETICS base coat mortar formulation
How to formulate high-durability ETICS base coat mortar? This article analyzes the core functions of Cellulose Ether, RDP, Hydrophobic Agents, and Fibers, and provides targeted SidleyChem product solutions (e.g., RDP 86353, WS 80). Get the complete guide to high-performance reinforcing mortar formulation… Continue reading
ETICS adhesive mortar additives
his article details the key performance requirements for adhesive mortar in ETICS. Explore SidleyChem’s high-performance solutions including Cellulose Ethers (HEMC/HPMC), Redispersible Polymer Powder (RDP), and Hydrophobic Agents to formulate strong, durable adhesive mortar… Continue reading
Nanoscale Enhancer Tile Adhesive
How to break through the water-resistant strength bottleneck of tile adhesive? SidleyChem’s Nanoscale Enhancer HS-93 significantly boosts performance via pore-filling and hydration promotion, delivering exceptional results even with low polymer powder dosage… Continue reading
Starch ether gypsum thickening
How does starch ether thicken building gypsum? This analysis with test data compares products from different origins and showcases optimized starch ethers for tile adhesive, cement putty, and gypsum applications… Continue reading
sand clay influence tile adhesive
How does high clay content in sand damage tile adhesive? This article reveals its severe negative impact on wetting time, open time, and final bond strength, with experimental data… Continue reading
Improve mortar workability
Struggling with poor mortar workability? Learn how Redispersible Polymer Powder (RPP) extends open time, enhances adhesion, and prevents sagging to solve common construction challenges… Continue reading
