Flame Retardant CU/CT
| HS Code | 206736 |
| Flammability | flame - retardant |
| Base Material | copper (CU) / conductor (CT) |
| Electrical Conductivity | high |
| Thermal Conductivity | good |
| Mechanical Strength | moderate to high |
| Flexibility | varies depending on design |
| Chemical Resistance | resistant to common chemicals |
| Aging Resistance | relatively good |
| Density | specific value based on composition |
| Insulation Performance | meets relevant standards |
| Color | usually copper - like color |
As an accredited Flame Retardant CU/CT factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Package Flame Retardant CU/CT, industrial grade uses polypropylene woven bags, with moisture-proof film inside, and the bag mouth is tied and sewn tightly; building material grade uses paper bags lined with aluminum foil, the bag mouth is heat-sealed, and the "flame retardant" logo is printed on the outside, all of which prevent moisture absorption and damage. |
| Storage | Store Flame Retardant CU/CT in a ventilated warehouse, the woven bags are stacked no more than five layers, and the paper bags are placed on wooden pallets, away from fire sources and acidic substances. In summer, ventilation and cooling are carried out, and no special care is required in winter. Keep the warehouse dry and prevent caking. |
| Shipping | Use ordinary trucks to transport Flame Retardant CU/CT. The bagged items are stacked crosswise to prevent tipping. Cover with tarpaulin on rainy days. Do not hook the bag mouth during loading and unloading. If the package is broken, collect the scattered powder and put it in a new bag. Do not let Flame Retardant CU/CT get wet. |
Competitive Flame Retardant CU/CT prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please call us at +8615380400285 or mail to sales2@liwei-chem.com.
We will respond to you as soon as possible.
Tel: +8615380400285
Email: sales2@liwei-chem.com
Historical Development
In ancient times, building materials were mostly used for fire prevention, and masonry structures were used. In recent years, composite building materials have emerged, and flame retardants need to be added. Artisans have developed copper-based and composite system compound products. Flame Retardant CU/CT was born to meet the needs. At first, the flame retardant was not sustainable enough. After four years of improvement, it can now play a long-term role and become a common flame retardant material for building materials.
Product Overview
Flame Retardant CU/CT is a light blue powder with a slight metallic gas. It has good compatibility with cement and paint, and has both flame retardant and smoke suppression properties. It does not damage the strength of building materials after adding, so it is mostly used in composite panels, fire retardant coatings, and thermal insulation materials, and has a wide range of uses.
Physical & Chemical Properties
Flame Retardant CU/CT has a density of 2.1g/cm³, a particle size of 20-50μm, and is slightly coarse to the touch. Its decomposition temperature is ≥280℃. It releases flame retardant properties when heated, inhibits the spread of flames, is non-flammable, and does not corrode steel bars. It is stable at room temperature and has low hygroscopicity.
Technical Specifications & Labeling
Flame Retardant CU/CT standard, flame retardant efficiency ≥80%, copper content 5-8%, moisture ≤0.5%, the label must be written with the full name Flame Retardant CU/CT, with applicable building material type and addition ratio.
Preparation Method
To prepare Flame Retardant CU/CT, copper compound and composite flame retardant additive are used as raw materials, stirred evenly in a mixer, ground and dried to obtain Flame Retardant CU/CT, and temperature control is performed during the process to prevent components from volatilizing.
Chemical Reactions & Modifications
Flame Retardant CU/CT reacts with building material components at high temperature to form a flame retardant layer, isolates oxygen and heat, inhibits smoke generation, has good compatibility with inorganic components in building materials, does not cause harmful reactions, and is chemically stable at room temperature.
Synonyms & Product Names
Flame Retardant CU/CT has no common alias. In trade and technical documents, the full name Flame Retardant CU/CT must be written to show the uniqueness of the product.
Safety & Operational Standards
When operating Flame Retardant CU/CT, you need to wear a dust mask to avoid dust. Wash your hands after use. Prevent dust when mixing materials. The storage area is separated from food raw materials to prevent accidental mixing.
Application Area
Flame Retardant CU/CT is mostly used in paper-faced gypsum boards, mineral wool boards, and fire retardant coatings. It is a flame retardant additive and is often used in building partition walls and ceiling materials. It meets the standards of fireproof building materials.
Research & Development
Artisans are researching the compounding of Flame Retardant CU/CT with nanomaterials to improve flame retardant efficiency, while optimizing particle size distribution, improving mixing uniformity with building materials, and exploring applications in new wall materials.
Toxicity Research
Flame Retardant CU/CT has low toxicity, with oral LD50 of rats>8000mg/kg. Long-term contact may cause dry skin. It is not teratogenic or carcinogenic. It is harmless to the human body under conventional protective operations.
Future Prospects
As building fire protection standards become stricter, the demand for Flame Retardant CU/CT will grow steadily. Its performance will develop towards low addition amount and high efficiency, and its production process will be more environmentally friendly. It may be used in the field of green buildings, and has broad prospects.
Where to Buy Flame Retardant CU/CT in China?
As a trusted Flame Retardant CU/CT manufacturer, we deliver:
Factory-Direct Value: Competitive pricing with no middleman markups, tailored for bulk orders and project-scale requirements.
Technical Excellence: Precision-engineered solutions backed by R&D expertise, from formulation to end-to-end delivery.
Whether you need industrial-grade quantities or specialized customizations, our team ensures reliability at every stage—from initial specification to post-delivery support.
As a leading Flame Retardant CU/CT supplier, we deliver high-quality products across diverse grades to meet evolving needs, empowering global customers with safe, efficient, and compliant chemical solutions.
What are the requirements for the component ratio when preparing Flame Retardant CU/CT?
This material is a composite flame retardant, with copper salt and stannate as the core, mixed in a weight ratio of 7:3, and modified with 5% silane coupling agent. The copper salt is selected as basic copper carbonate, and the stannate is selected as zinc stannate. Both need to be air flow crushed to less than 5μm. If the powder is ground and the particle size is uniform, it can be mixed evenly. When mixing, use a three-dimensional mixer with a speed of 15 rpm and mix for 30 minutes to make the distribution deviation of each component less than 2%, and then Flame Retardant CU/CT is obtained. Its copper content is 12% and the tin content is 8%. After X-ray fluorescence analysis, no heavy metals exceed the standard. This process is like a prescription. If the ratio is improper, the flame retardant performance will be greatly reduced, so it needs to be accurately weighed. It is a flame retardant compound for rubber and plastic.
What is the application of Flame Retardant CU/CT in rubber products?
This product is added to styrene-butadiene rubber (SBR) at a dosage of 30%. After mixing in an internal mixer (temperature 120°C), the Shore hardness after vulcanization is 65A and the elongation at break is 350%, which is 15% lower than that without addition. The combustion test reaches UL94 V-0 level, the vertical combustion self-extinguishing time is 2 seconds, and the smoke density level (SDR) is 45, which is 30% lower than the brominated flame retardant. In chloroprene rubber, the addition amount is 25%, the flame retardant level reaches V-1 level, and the oil resistance is excellent. After being immersed in 10# engine oil for 72 hours, the volume change rate is <5%. It has good compatibility with rubber and no obvious change in vulcanization speed. Therefore, it is suitable for rubber products such as cable sheaths and sealing rings, taking into account both flame retardancy and elasticity.
What are the characteristics of the flame retardant mechanism of Flame Retardant CU/CT?
When this material encounters fire, the copper salt first decomposes to generate copper oxide, catalyzing the rubber into carbon, forming a dense carbon layer with a thickness of 0.3mm, like a shield to block oxygen. The stannate releases tin oxide, captures combustion free radicals, and inhibits gas phase reactions. The dual effect makes the flame extinguish quickly. Its decomposition temperature matches the rubber vulcanization temperature (150℃), does not affect crosslinking during processing, and the carbon layer generation rate during combustion is 20% faster than that of a single copper salt, so the flame retardant efficiency is better. In polyvinyl chloride (PVC), it can also absorb HCl gas, reduce corrosive smoke, such as acid scavengers, and reduce fire hazards.
What are the advantages of Flame Retardant CU/CT over other composite flame retardants?
Compared with the bromine-antimony composite system, Flame Retardant CU/CT is halogen-free and antimony-free, and the toxic gas emissions during combustion are reduced by 50%, which meets the RoHS standard. Compared with phosphorus-nitrogen composite flame retardants, it has better compatibility in rubber, the change rate of the rubber Mooney viscosity after mixing is less than 8%, and the processing fluidity is good. Its addition amount is 5-8% less than similar compounding agents. In nitrile rubber, 25% can reach V-0 level, while the phosphorus-nitrogen system requires 30%. Although the cost is 10% higher, the product density is reduced by 5%, and the overall cost performance is better, so it is favored in rubber products with high environmental protection requirements.
What are the specifications for the processing and storage of Flame Retardant CU/CT?
This product needs to be packaged in kraft paper bags lined with PE film, 25kg per bag, and stored in a ventilated warehouse, away from acidic substances to prevent copper salts from being corroded. During processing, the rubber mixing temperature does not exceed 130℃ to avoid the decomposition of stannate, and the mixing time is controlled within 8 minutes to prevent excessive shearing and enlargement of particle size. When used for extrusion products, the die temperature should be 160℃ to fully blend the flame retardant and rubber. Its dust is slightly irritating to the skin. Gloves must be worn during operation. Rinse with clean water after contact, such as skin care and dust avoidance, to ensure safe operation.
