High-purity chemical auxiliaries custom-engineered to optimize municipal and industrial wastewater processes, control excessive foam, and isolate hazardous heavy metals.
In industrial systems, foam is not merely an aesthetic nuisance; it is a complex dispersion of gas in a liquid stabilized by surface-active agents (surfactants). The stability of industrial foam is governed by interfacial properties such as the Marangoni effect, electrostatic repulsion, and bulk viscosity. To break this stability, a formulated defoamer or antifoam must possess a precise balance of low surface tension, controlled insolubility, and highly coordinated spreading capabilities.
Our OEM formulations target the core destabilization indices. When the defoamer droplet enters the foam lamellae (the thin liquid walls separating bubbles), it acts via two primary mechanisms:
Antifoams work preventatively, added to the system before foam generates. They remain dispersed, waiting to break newly formed bubble precursors. Defoamers, conversely, are knock-down agents formulated to destroy existing foam rapidly on contact.
Smedic’s chemical laboratories customize the balance of active hydrophobic ingredients, carrier oils, and surfactant emulsifiers to match the exact temperature, pH, and salinity profile of your target medium.
Industrial processes demand divergent chemistry to prevent contamination, withstand shearing forces, and survive severe thermal variations.
Utilizing high-performance Polydimethylsiloxane (PDMS) modified with polyether side chains. This hybrid composition yields exceptional spreading coefficients combined with unmatched heat resistance (up to 150°C) and excellent stability in both highly acidic and strongly alkaline media.
Optimal Applications: Textile dyeing, chemical synthesis, extreme pH wastewater.Synthesized via the block copolymerization of ethylene oxide (EO) and propylene oxide (PO). These defoamers exhibit a distinct "inverse solubility" temperature property known as the cloud point. Above the cloud point, they become insoluble and highly active at breaking foam; below it, they dissolve completely, avoiding membrane fouling.
Optimal Applications: Fermentation, paper pulping, high-pressure boilers, RO systems.Formulated with refined mineral hydrocarbons combined with hydrophobic particle dispersions. Highly efficient at stripping macro-foam from high-viscosity coatings, paints, and polymer dispersions. They maintain prolonged performance and provide excellent mechanical shear stability without affecting coating gloss or paint adhesion.
Optimal Applications: Architectural paints, printing inks, adhesive manufacturing.| Defoamer Type | Active Component | Working pH Range | Temperature Threshold | Key Performance Attribute |
|---|---|---|---|---|
| Silicone-Based (PDMS) | Polydimethylsiloxane & Silica | 1.0 – 14.0 | Up to 160°C | Ultra-low dosage, fast knock-down, inert chemistry |
| Polyether Copolymers | EO/PO Block Copolymers | 5.0 – 10.0 | Cloud-point dependent | Zero silicon residue, prevents membrane scaling |
| Mineral Oil Complexes | Aliphatic hydrocarbons & waxes | 4.0 – 11.0 | Up to 60°C | Excellent shear resistance, paints/coatings friendly |
| Fatty Alcohol Systems | C16-C18 Natural fatty alcohols | 6.0 – 9.0 | Up to 45°C | 100% biodegradable, designed for municipal drainage |
Smedic Technology Co., Ltd. was established in 2011 as a comprehensive solution provider specialized in environmental protection agents, integrating R&D, production, sales, and engineering-related technical services. We are dedicated to providing customers with customized chemical products, technical solutions, and services.
Smedic produces environmental protection agents covering multiple sectors such as municipal sewage, industrial wastewater, and tap water treatment, as well as mineral processing agents, and oilfield chemicals. We offer more than 80 different environmental protection products, with an annual production capacity exceeding 1 million tons.
Founded in Beijing, establishing core synthetic research capabilities.
Extensive chemical portfolio covering flocculants, defoamers, and heavy metal binders.
Consolidated annual capacity across our massive manufacturing nodes.
Our advanced materials laboratory operates 24/7, refining custom defoamer polymer designs.
We are a leading player in the high-end environmental chemical segment in China, backed by deep research integrations and industrial capabilities.
Our corporate headquarters is located in Beijing, with multiple wholly-owned production bases in Hebei, Guizhou, Shanxi, and other regions. To ensure immediate local supply, Smedic has established over ten OEM partner factories and regional warehousing and logistics hubs in Shandong, Shanxi, Anhui, Guangxi, and Sichuan provinces. This layout guarantees supply security and lowers transportation cost structures for chemical delivery.
We maintain deep strategic partnerships with China's largest water environmental protection groups, including:
Smedic is recognized as a National Specialized, Refined, Unique and Innovative "Little Giant" Enterprise. Our technological capabilities stem from an ecosystem of one academy, three research institutes, and five production bases. We have established:
Smedic holds over sixty Chinese patents, including more than forty invention patents, leading the drafting of over ten national standards.
Invention Patent
Invention Patent
Green Factory Certification
ISO 9001 Qualification
Little Giant Enterprise
Enterprise Standard Award
National Invention Award
Excessive foaming disrupts continuous operations, causes safety hazards, and ruins product quality. Our target-specific formulations address these challenges.
Aeration basins and membrane reactors (MBR) are prone to biological foam from filamentous bacteria. Our specialized polyether defoamers eliminate surface foam without clogging ultrafiltration membranes or poisoning biological sludge. They exhibit high biodegradeability and contain zero heavy metals.
In mineral slurry flotation, control over the froth layer thickness is critical for metal recovery. Smedic's defoamers selectively destroy parasitic macro-foam while preserving the target micro-froth containing mineral-collector complexes, maximizing throughput and grade recovery.
High shear, high temperatures, and chemical complexity in oil wells destabilize conventional defoamers. Our silicon-polyether block copolymers withstand high salinity (up to 200,000 ppm TDS) and high temperatures (up to 180°C) to keep drill fluids degassing properly.
Our independently developed "Inorganic-Organic Covalent Bond Flocculant and Its Advanced Water Purification Technology" won the 22nd China Patent Award, the First Prize for Technological Invention from the China Petrochemical Industry Association, and Hebei Province Science and Technology Progress Award. It is selected as a "Belt and Road" SME Recommended Project.
By pairing this technology with our OEM silicone and polyether defoamers, industrial facilities can resolve co-existing sediment and foam problems simultaneously, reducing overall operational expenditure by up to 30% compared to traditional treatment schemes.
Operating out of highly digitized factories, Smedic leverages state-of-the-art chemical automation. Our production bases execute continuous-flow polymerization for silicon oils and polyethers. Automated synthesis ensures chemical batch uniformity (with standard deviation of viscosity <3%).
As a global OEM/ODM manufacturer, we offer end-to-end customization services:
Our Hebei Green Factory is highly automated, minimizing contamination and outputting over 1 million tons annually.
Invention Patent Doc
Intellectual Property Cert
Science & Tech Certificate
Specialized Enterprise Doc
Green Production Honor
Academic Workstation Cert
From a specialized environmental lab to a national chemical supplier, tracking Smedic's trajectory.
Smedic products comply with stringent environmental standards worldwide. We assist global procurement departments in securing safe, high-efficacy chemicals.
Our chemicals meet REACH, RoHS, FDA, and EPA requirements. Smedic operates in strict accordance with ISO 9001 (Quality Management), ISO 14001 (Environmental Management), and ISO 45001 (Occupational Health & Safety).
By leveraging regional warehousing and logistics hubs across multiple provinces in China, Smedic assures reliable shipping times and buffers international supply lines against freight disruptions.
Every product batch is accompanied by a Certificate of Analysis (COA) and tested on HPLC, GC-MS, and surface tensiometer units. We guarantee zero batch-to-batch deviation.
Detailed technical and commercial answers to help procurement and engineering specialists make informed sourcing decisions.
A defoamer is formulated to destroy existing foam rapidly on contact (also known as a knock-down agent). It has high surface spreading capabilities. An antifoam is designed to prevent foam generation before it occurs. Antifoams are usually dispersed into the system beforehand and must have long-lasting persistence to keep foam from consolidating.
Silicone defoamers can cause fouling in membrane bioreactors (MBR) or Reverse Osmosis (RO) systems if they are poorly formulated or overused. To prevent this, we engineer modified silicone polyether copolymers or pure polyether defoamers that exhibit a distinct cloud point. Above the cloud point, they are highly active foam control agents; below it, they dissolve fully into the aqueous solution, allowing them to pass through the membrane pores without scaling or fouling.
Because of their ultra-low surface tension and high active content, Smedic organic silicone emulsions are extremely efficient. Standard dosages range between 50 to 300 parts per million (ppm) or 0.05 to 0.3 kg per ton of foaming liquid. For high-concentration systems or chemical syntheses, we recommend starting with a 100 ppm dosage and scaling accordingly.
Yes, our R&D system, supported by Tsinghua University and Shandong University joint labs, specializes in custom chemical synthesis. We analyze your sample's pH, temperature, surfactant composition, and shear rate to formulate an OEM/ODM defoamer that fits your operating parameters perfectly.
With over ten OEM partner factories and regional warehousing hubs across China, we boast an annual capacity exceeding 1 million tons. This diversifies our supply nodes, protecting against local raw material shortages or shipping delays, ensuring that large contracts are delivered on time, every time.
Explore our complete range of specialized industrial agents and defoamer variants below.
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