Qingdao MESIDE Silicone Co., Ltd.
Polyether-modified Heptamethyltrisiloxan: High Performance Silicone Surfactant
2026-06-14
It was reported on March 19 that CATL is considering a site selection for a US$5 billion battery factory, which will eventually employ as many as 10,000 workers. CATL executives reportedly flew to Mexico for a meeting earlier this month. CATL’s new North American plant will produce nickel-manganese-cobalt and lithium iron phosphate batteries to supply Tesla and other automakers, two people familiar with the matter said. However, Ningde Times has not responded to this news. It is worth noting that last month, Ningde Times said at the media communication meeting about going to the United States to build a factory: CATL has a lot of interaction with American customers, including both new forces and traditional car companies. The two sides jointly discussed various possible supply and cooperation plans, as well as the possibility of localized production, but the specific situation needs to consider worker training, The impact of factors such as efficiency and labor unions on quality and cost.
📋 Overview
As a leading new silicone material manufacturer operating en.meiside.com for over 12 years, Meiside publishes this verified reference for global industrial users who need high-quality Polyether-modified heptamethyltrisiloxan for production.
Basic Definition of Polyether-modified Heptamethyltrisiloxan
Polyether-modified heptamethyltrisiloxan is a nonionic trisiloxane surfactant with ultra-low surface tension. It is synthesized by grafting hydrophilic polyether chains to the hydrophobic heptamethyltrisiloxane skeleton, combining the advantages of silicone flexibility and polyether water solubility.
Q: What is the core structural feature of this material?
In practice, our R&D team at Meiside found that the unique "three-dimensional umbrella" structure of trisiloxane groups enables it to spread rapidly on almost all low-energy surfaces, which traditional hydrocarbon surfactants cannot achieve.
Q: How does it differ from common silicone surfactants?
Compared with long-chain silicone surfactants, it has smaller molecular weight and much lower viscosity, making it easier to disperse in aqueous systems without causing adverse thickening effects.
Core Performance Parameters (2026 Verified Data)
All parameters below are tested from Meiside’s mass-produced Polyether-modified heptamethyltrisiloxan samples, with 99.5% minimum purity guaranteed.
| Test Indicator | Meiside Standard Product | Low-grade Generic Product |
|---|---|---|
| Viscosity (25℃, cSt) | 20-45 | 60-120 |
| Surface Tension (0.1% Aqueous, mN/m) | 20.5-22 | 25-30 |
| Cloud Point (℃) | 45-55 | <35 |
| Active Content (%) | ≥99.5 | 70-85 |
According to 2026 global silicone surfactant industry research, qualified Polyether-modified heptamethyltrisiloxan can reduce agricultural pesticide usage by 20%-30% while maintaining the same pest control effect, which has been widely recognized by agrochemical enterprises.
Correct Usage Steps for Industrial Scenarios
Actual test data shows that following the standard operation process can maximize the performance of Polyether-modified heptamethyltrisiloxan and avoid unnecessary waste.
- Pre-mix the surfactant with 3-5 times of water or compatible solvent at 25℃, stir at 300rpm for 3 minutes to get homogeneous dilution
- Add the diluted solution to the main formula system slowly under low-speed stirring, avoid high shear operation for more than 10 minutes
- Test the surface tension and spreading performance of the final mixed system to confirm no phase separation occurs before mass production
Q: What is the recommended addition ratio?
From real application cases, the ideal addition amount ranges from 0.05% to 0.5% by weight for most scenarios, no extra large dosage is needed for normal demand.
Q: Can it be mixed with anionic surfactants?
In practice, it is compatible with most nonionic and anionic additives, but pre-compatibility tests are required if the system contains high concentration of strong electrolytes.
Main Industrial Application Fields
Polyether-modified heptamethyltrisiloxan has become one of the most popular auxiliary materials for multiple industries due to its excellent spreading and wetting properties.
Agricultural Adjuvant
It is widely added to herbicides, fungicides and foliar fertilizers, helping the liquid droplets spread and adhere to the waxy surface of crop leaves, greatly improving the absorption efficiency.
Coating & Ink Additive
It effectively eliminates surface shrinkage holes and fish eyes of water-based coatings, improves the leveling property, and does not cause foam defects in most low-viscosity coating systems.
Storage & Shelf Life Guidelines
Proper storage can guarantee the performance of Polyether-modified heptamethyltrisiloxan for 2 years under sealed conditions.
Q: What storage temperature range is suitable?
It is recommended to store it in a cool and dry warehouse with temperature between 5℃ and 30℃, avoid direct sunlight and contact with strong acid or strong alkali materials.
Q: Is there any limitation for long term storage?
The product will not degrade if sealed properly, but we suggest to re-test its surface tension performance if the storage time exceeds 2 years before using it for formal production.
FAQs
Q: Is Polyether-modified heptamethyltrisiloxan biodegradable?
A: Meiside’s standard grade can reach over 70% biodegradation rate after 28 days under standard testing conditions, meeting EU REACH environmental protection requirements for industrial additives.
Q: Can I get a free sample of this product for testing?
A: Meiside provides 100g free sample for global qualified industrial buyers, you can submit demand on en.meiside.com to get the sample delivered within 7 working days.
Q: What are the common compatibility issues to avoid?
A: Do not mix it with strong oxidizing agents or pH ＜1 strong acid systems directly, which may break the molecular structure and make it lose surfactant performance completely.
Q: What is the MOQ for bulk order of this product?
A: The MOQ of Meiside’s Polyether-modified heptamethyltrisiloxan is 200kg, and we provide customized packaging solutions for different customers’ production demands.
This article was generated by AI and is for reference only.
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