Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ)
| HS Code | 954825 |
| Flammability Rating | High flame retardancy for pitch |
| Halogen Content | Zero halogen |
| Environmental Friendliness | Low environmental impact |
| Thermal Stability | Good thermal stability |
| Chemical Compatibility | Compatible with pitch |
| Mechanical Property Impact | Minimal impact on pitch's mechanical properties |
| Smoke Generation | Low smoke generation |
| Toxic Gas Emission | Low toxic gas emission |
| Processing Temperature Range | Suitable for pitch processing temperatures |
| Storage Stability | Good storage stability |
As an accredited Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ) factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Packing Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ), industrial grade uses iron barrels lined with polytetrafluoroethylene, the barrel lid is embedded with silicone gasket, and the iron hoop is tightened to reinforce it; engineering grade uses double-layer plastic barrels, the inner barrel is sealed with a screw cap, and the outer barrel is covered with a metal frame, all printed with the "halogen-free and environmentally friendly" logo to prevent leakage. |
| Storage | Store Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ) in a cool warehouse, with the iron barrel half a foot off the ground and the plastic barrel on a wooden frame, away from fire and strong acid, and the stacking does not exceed two layers. The warehouse is well ventilated and checked once a week in summer to prevent high temperature deterioration. |
| Shipping | Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ) is transported in a closed truck, with rubber sheets between barrels to prevent shock, and the words "environmentally friendly flame retardant" are marked. It is covered with tarpaulin on rainy days. It should be placed gently during loading and unloading. If it leaks, it should be covered with sand and collected, and not allowed to flow into the soil. |
Competitive Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ) 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.
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Tel: +8615380400285
Email: sales2@liwei-chem.com
Historical Development
In ancient times, asphalt was waterproof only because of its viscosity. In modern times, asphalt is used in roads and buildings, and flame retardant is required to prevent hazards. Craftsmen abandoned halogen-containing flame retardants and developed halogen-free formulas. Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ) was born out of demand. At first, it had poor compatibility with asphalt. After six years of improvement, it can now be evenly dispersed and become a good asphalt flame retardant.
Product Overview
Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ) is a brown paste with a slight mineral smell. It has good miscibility with asphalt. It releases flame-retardant gas when heated, inhibits asphalt combustion, and does not affect its waterproofness. It is mostly used for road asphalt and building waterproofing membranes. It is environmentally friendly and non-corrosive.
Physical & Chemical Properties
Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ) has a slightly higher density than asphalt, moderate viscosity at room temperature, is easily melted and dispersed when heated, has a decomposition temperature of ≥300℃, is non-flammable, has no reaction with metals, is non-irritating to the skin, and has a storage period of up to two years.
Technical Specifications & Labeling
Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ) is in compliance with the standards, flame retardant efficiency ≥85%, halogen content ≤0.01%, compatibility with asphalt ≥98%, full name Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ) must be written on the label, with environmental certification and usage ratio attached.
Preparation Method
Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ) is prepared by using expandable phosphorus compound and inorganic synergist as raw materials, heating and stirring in a reactor, grinding and homogenizing to obtain Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ), and temperature control is performed during the process to prevent components from volatilizing.
Chemical Reactions & Modifications
Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ) reacts with asphalt to form a carbonized layer at high temperature, isolates oxygen, inhibits smoke generation, has good compatibility with components in asphalt, does not cause harmful side reactions, and has stable chemical properties at room temperature.
Synonyms & Product Names
Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ) is also known as "halogen-free environmentally friendly flame retardant for asphalt", but in trade and technical documents, the full name Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ) must be used to indicate its specificity.
Safety & Operational Standards
When operating Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ), oil-resistant gloves must be worn to avoid direct contact with the skin. The exhaust should be turned on during mixing. If it splashes into the eyes, rinse with clean water. Open flames are prohibited in the storage area, and sand and soil should be prepared for emergency.
Application Area
Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ) is mostly used in highway asphalt pavement, building waterproof asphalt roll, and tunnel fire retardant coating. Adding 5-8% can significantly improve the flame retardancy of asphalt without affecting its mechanical properties.
Research & Development
Artisans are researching Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ) and nano flame retardant to improve smoke suppression effect, optimize production process, reduce cost, and explore application in high-temperature asphalt pipelines.
Toxicity Research
Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ) has extremely low toxicity, rat oral LD50＞10000mg/kg, no irritating odor, long-term contact is harmless to the human body, and meets environmental protection material standards.
Future Prospects
As environmental standards become stricter, the demand for Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ) will increase by 10% annually. Its performance will develop in the direction of low smoke and high efficiency, or it may be used for flame retardant of high-speed rail asphalt to adapt to more stringent scenarios.
Where to Buy Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ) in China?
As a trusted Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ) 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 Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ) 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 process details for adapting the properties of asphalt when preparing Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ)?
This material is made of 80% ammonium polyphosphate (degree of polymerization 20) and 10% expanded graphite as the base material, supplemented with 10% styrene-butadiene modified resin, placed in a stainless steel kneader, controlled at 150℃, and stirred at 50 rpm for 1.5 hours to melt the material into a homogeneous phase. It is granulated by a twin-screw extruder with a die head temperature of 140℃ and cut into cylindrical particles with a diameter of 3mm and a length of 5mm to obtain Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ). Its melting point is 120℃ as determined by differential scanning calorimetry, which accurately matches the softening point of road asphalt of 110-130℃. When heated to 160℃, it can be completely melted with asphalt without stratification. During preparation, the modified resin needs to be uniformly coated with the base material particles, such as coating gravel with asphalt. Scanning electron microscope observation shows that the coating thickness is 5μm, ensuring compatibility with asphalt. After testing, adding 15% to No. 70 road asphalt and stirring for 30 minutes, the dispersed particle size is evenly distributed at 20-50μm, without agglomeration, solving the problem of sedimentation and agglomeration of ordinary flame retardants in asphalt, and is a special material for flame retardant of asphalt pavement and waterproof membrane.
What is the specific performance of Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ) applied to asphalt pavement?
This product is added to road asphalt, the dosage is 12%, mixed in a forced mixing station, and the mixing time is 3 minutes to ensure uniform dispersion before paving. The formed pavement has been tested by Marshall, and the stability is 8kN, the flow value is 3mm, and the compressive strength is 10MPa, which is only 5% lower than that without addition, meeting the technical standards of highway engineering. In the combustion performance test, the self-ignition temperature of the asphalt pavement increased from 230℃ to 320℃. It was burned with an alcohol torch for 30 seconds, and the self-extinguishing time was 3 seconds after the fire source was removed. There was no melting and flowing phenomenon, and the carbonization depth was only 2mm. It forms stable hydrogen bonds with the colloid and asphalt in the asphalt. After 100 cycles of freezing at -20℃ and melting at 60℃, the pavement has no cracks and no peeling, and the flame retardant performance is retained by 90%. At the high temperature of 60℃ in summer, the dynamic stability reached 3000 times/mm after the rutting test, which is 15% higher than that without addition, without precipitation and oil. Therefore, it is widely used in scenes where fire prevention is required, such as tunnel asphalt pavement, airport runway, and highway service area. It not only maintains the strength of the road structure, but also effectively blocks the spread of flames. It is halogen-free and antimony-free, and meets the EU CE certification requirements.
What are the specific test data of the weather resistance of Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ)?
Added 10% of it to SBS modified asphalt waterproofing membrane, after 1000 hours of QUV UV aging test (irradiance 0.7W/m², temperature 60℃), the membrane was not brittle, and the elongation at break dropped from the original 300% to 240%, with a retention rate of 80%, 30% higher than the 50% without addition. After soaking in 3% sodium chloride solution for 90 days, the phosphorus content in the solution was regularly tested, and the amount of flame retardant precipitation was calculated to be less than 0.5%. The oxygen index in the flame retardant performance test of the membrane remained at 28%, with no significant decrease. Placed in a -30℃ low-temperature box for 24 hours, taken out and bent 180°, the membrane had no cracks and the low-temperature bending performance was qualified, indicating that it can withstand the severe cold climate in the north. After artificial accelerated aging test, simulating outdoor exposure for 5 years, its molecular structure has no obvious change, no discoloration, and no degradation after infrared spectroscopy analysis. Therefore, the service life in outdoor asphalt projects can reach more than 15 years, which greatly reduces the maintenance and replacement frequency and reduces the cost of the whole life cycle.
What are the advantages of Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ) compared with other asphalt flame retardants?
Compared with brominated asphalt flame retardants, this product is halogen-free and antimony-free. Through the smoke toxicity test, the smoke density rating (SDR) during combustion is 50, which is 40% lower than the 85 of the brominated series, and the emission of toxic gases (such as hydrogen bromide) is reduced by 60%, which complies with EU RoHS and REACH standards. Compared with pure ammonium polyphosphate, after surface modification, its compatibility with asphalt is increased by 50%. After adding 15%, the viscosity of asphalt changes from 3000cP to 3200cP, and the change rate is less than 10%, which does not affect the construction fluidity. In terms of flame retardant efficiency, adding 15% can make asphalt reach the B1 flame retardant standard in GB8624-2012, which is 5% less than similar halogen-free flame retardants, and the cost per ton of asphalt can be reduced by 80 yuan. The surface of its particles is treated with silane coupling agent, and the wetting angle with asphalt is reduced from 60° to 30°, which is easier to disperse. After stirring, it can reach a uniform state in 30 minutes, so the comprehensive performance is better than that of traditional asphalt flame retardants.
Halogen-free environment-friendly flame retardant for use in pitch (XXFR-LQ) What are the operating specifications in construction?
This product needs to be added when the asphalt is heated to 160℃, and the screw conveyor is used to feed at a uniform speed. The feeding rate matches the asphalt pumping volume (5 tons of asphalt per hour with 750kg flame retardant), and the stirring speed is 80 rpm while adding. The stirring shaft needs to have upper and lower stirring paddles to ensure that the upper and lower layers are evenly mixed to avoid local overheating and flame retardant decomposition. The bagged product (25kg/bag) must be poured into the hopper immediately after opening to prevent moisture absorption and agglomeration. If agglomerates, it must be filtered through a 100-mesh vibrating screen. The residue on the screen can be reused after being crushed by a crusher. After mixing with asphalt, it must be spread within 4 hours. If it exceeds the time limit, the viscosity must be re-tested. If the viscosity rises by more than 20%, an appropriate amount of diesel must be added for adjustment. Construction tools such as mixing tanks and pavers can be cleaned with diesel without the need for special solvents. The cleaning wastewater can be recycled after sedimentation. The dust particle size is mostly above 10μm, which is less irritating. Wearing a KN90 dust mask during operation is sufficient, which meets the requirements of the "Environmental Noise Emission Standards for Construction Sites".
