What is Methyl allyl alcohol polyoxyethylene ether HPEG 2400?
HPEG 2400 Polycarboxylate Superplasticizer Monomer
HPEG 2400 is a new macromonomer of a new polycarboxylate superplasticizer developed by our company based on the original.
Scope of application of HPEG 2400
1. HPEG is mainly used to produce polycarboxylic acid superplasticizer products.
2. Dilute the product directly with water to the desired proportion, then mix with unsaturated fatty acids.
Under the condition of redox initiation system, polycarboxylic acid superplasticizer can be synthesized below 60 ℃.
Product characteristics of HPEG
1. The polycarboxylic acid superplasticizer synthesized with it has a higher water-reducing rate, higher slump resistance, good early strength, low alkali, low foam, and low energy consumption.
2. The third monomer is introduced: it has a better molecular weight regulation function.
The synthesized superplasticizer has the advantages of uniform molecular weight distribution, good workability of concrete, and low viscosity.
3. The higher unsaturation ensures the higher effective content of the superagent synthesized in the later stage, which makes the most favorable guarantee for a high water reduction rate and high slump protection.
Packaging, storage, and transportation of HPEG
Packing in 200 Kg or 25 Kg lined plastic bags.
Store in a cool and ventilated place.
Storage period of 1 year
FAQs of HPEG:
Q: What are the advantages of HPEG 2400 over traditional naphthalene or sulfamate based water reducing agents?
A: Compared to traditional types of water reducing agents such as naphthalene-based and sulfamate-based, HPEG 2400, as a component of polycarboxylic acid water reducing agents, offers several significant advantages: Higher water reduction efficiency: lower water-cement ratios can be achieved, resulting in higher early and late strengths. Better fluidity and retention time: a longer time window can be provided to maintain good workability of the concrete. Lower environmental impact: because they are synthesized based on a non-formaldehyde reaction, they are often considered a more environmentally friendly option. Better compatibility: show good adaptability to different types of cement and mineral admixtures.
Q: What do I need to be aware of when using HPEG 2400?
A: When using HPEG 2400 as part of a polycarboxylic acid water reducing agent, the following points need to be noted: Dosage control: It must be added strictly according to the recommended ratio provided by the manufacturer, too much may lead to over-dispersion, causing concrete segregation or water seepage phenomenon; too little will not give full play to its effect. Storage conditions: It should be stored in a cool and dry place and avoid direct sunlight to prevent high temperature from affecting product quality. Mixing uniformity: Ensure that HPEG 2400 is fully dissolved and evenly mixed with other ingredients, which is essential to ensure the performance of the final product.
Mixing ratio design: Adjust the ratio of concrete according to the specific project requirements, including the proportion of cement, sand, gravel, water and other admixtures to achieve the best results.
Q: How does HPEG 2400 affect the setting time and hardening characteristics of concrete?
A: HPEG 2400 itself does not directly change the setting time of concrete, but as part of a polycarboxylic acid water reducing agent, it can indirectly affect these properties. By optimizing the degree of dispersion between cement particles, it slows down the initial reaction rate during cement hydration, which may extend the initial setting time. In addition, by reducing the amount of water used, it may promote the formation of a denser microstructure and accelerate the development of later strength. However, the exact setting time and hardening characteristics can be affected by a variety of factors, such as the type of cement, ambient temperature, and whether other retarders or accelerators have been added.
Q: Are there any potential application limitations or challenges with HPEG 2400?
A: Although HPEG 2400 performs well in many respects, there are some application limitations or challenges that it may face in certain situations: Higher cost: Polycarboxylic acid water reducers can be more costly compared to traditional water reducers, which can be a barrier to large-scale application. Differences in suitability: Although HPEG 2400 is generally suitable for all types of cement, there may sometimes be incomplete matches in specific brands or sources of cement, which need to be verified in tests. Increased complexity: High-performance concrete formulations prepared with HPEG 2400 tend to be more complex, involving more precise control of parameters, which requires a higher level of skill on the part of the construction personnel. Long-term performance evaluation: Despite the superior short-term performance, for structures exposed to extreme environments (e.g., seawater erosion, freeze-thaw cycles) over a long period of time, further studies and tests are needed to confirm their durability and stability.