Flame Retardant Masterbatch for XPS

Inflammant masterbatch, used for extruded polystyrene board (XPS), its preparation method, which depends on the appropriate materials. Its main ingredients, the first is brominated flame retardants, commonly used such as hexabromocyclododecane (Hexabromocyclododecane, HBCD), is a white powder, easy to melt with polystyrene, in case of fire, it decomposes and releases bromine, which can curb the chain reaction and block the spread of combustion. However, in times of environmental protection, the use of hexabromocyclododecane is prohibited, and people then take new halogen-free flame retardants, such as ammonium polyphosphate (APP), melamine cyanurate (MCA), or halogenated phosphorus and nitrogen compound agents, so as to achieve both flame retardant efficiency and environmental protection needs.
The secondary carrier, the cover masterbatch is based on plastic, so that the flame retardant is evenly dispersed and easy to follow-up processing. Usually the carrier used is polystyrene itself, or the carrier is a thermoplastic polymer such as EVA. It also adds helpful dispersants, lubricants, and coupling agents to fully infiltrate and melt the flame retardant components, preventing agglomeration, and improving the stability of the plate structure.
Complex synergistic agents to enhance the effect of the main agent. Commonly used, such as antimony trioxide (Sb 2O), used in combination with bromine, can synergistically cause flame retardancy. Mineral fillers such as talc, aluminum hydroxide, and magnesium hydroxide can also be seen to suppress smoke and increase efficiency, and help processing.
For the rest, the masterbatch still has antioxidants and light stabilizers to prevent thermal decomposition, ultraviolet aging, and prolong the life of the board. The ingredients take their own strengths and complement each other, so that the flame retardancy, protection and durability of XPS board can be benefited.
In summary, the fire retardant masterbatch is used for XPS. Its main material is bromine-based or halogen-free flame retardant, with polystyrene or similar polymers as the carrier, supplemented by dispersion, lubrication, and synergistic agents. Finally, it is prepared for anti-oxygen and light stability. With ingenious preparation, the fire resistance of XPS thermal insulation materials can be greatly exerted, which not only secures the safety of the substrate, but also goes well with the way of environmental protection.

Flame stop masterbatch is used for extruded polystyrene board (XPS), and its dosage has a constant specification, and the abnormal shape also exists between different production processes and performance requirements. To investigate the addition of flame stop masterbatch, the dosage should be determined according to the combustion grade of the product. The "Building Materials Standard" clearly states: To reach the flame retardant B1 grade, or to strengthen to a higher flame retardant grade, the content of the masterbatch must be increased. Usually, the addition of flame stop masterbatch, the common ratio is between 3% and 8%. Low is three points, high is eight points, and it can fluctuate according to the nature of the raw material and the thickness of the product. If the original polystyrene granule itself is pure, the demand for flame stop masterbatch may be slightly reduced. If there are impurities, the amount of flame stop masterbatch must be increased. The process operation is also exquisite. If the mixing is uniform, the effect will be easy to show. If the dispersion is not good, the flame retardant will reduce the efficiency, and it is necessary to use more. Climate and environment are also involved. If the temperature is too high, the volatile loss of the masterbatch needs to be supplemented.
The flame retardant effect is still closely related to the flame retardant category. There are bromine-based and phosphorus-based, and the performance is different. Bromine-based such as hexabromocyclododecane (HBCD), the dosage is relatively low, and three points is enough; if the phosphorus-based new agent is ammonium polyphosphate and melamine, the dosage may need to be as high as seven or eight points due to the difference in efficiency. There are also compound solutions, which can be used in combination, and can better take into account the double advantages of mechanics and flame retard Accurate dosage must be considered according to the data given by the manufacturer, and sample testing is particularly critical. In practice, it is advisable to test in small batches to see if the combustion, shrinkage, and color affect it, and then set a large production ratio. It is based on the addition of Flame Stop masterbatch. There is no 10% rule, and it is usually three to eight points. It needs to be adjusted according to the actual situation, so as to achieve the standard without residual damage. Due to sincerity, the work of Flame Stop can be very effective. It is the method of Flame Stop masterbatch.

The flame retardant masterbatch is used for polystyrene extruded foam board (XPS), and there are profound reasons for its impact on physical properties. The cover XPS board is mainly used for heat preservation, with a dense structure, uniform pores and excellent strength. In the preparation process, such as adding flame retardant masterbatch, it is designed to improve the flame retardant grade and make it meet the fire protection specifications, and is used in construction, cold storage and other projects. However, its impact on physical properties cannot be ignored.
First, the flame retardant masterbatch is mostly organic bromine-based, phosphorus-based, or inorganic substances such as antimony trioxide are combined into the polymer system, which changes the nucleation and growth process of the foam, resulting in subtle changes in the cell structure. If the dosage is moderate and the process is appropriate, the cell is still uniform, the closed cell rate is high, and the thermal conductivity changes extremely little; if the dosage is inappropriate, or the dispersion is uneven, the cell is coarse, the closed cell rate decreases, resulting in increased heat transfer and greatly reduced heat insulation performance. This is the one end that affects the thermal performance.
Second, the partial flame retardant masterbatch particles are large and dispersed in the resin matrix, which is easy to become a source of stress concentration, resulting in a slight decrease in compressive strength. The higher the amount of filling, the more pores are increased, and the overall strength of the plate is slightly reduced. If the production process is not improved, even the brittleness increases and the flexural resistance decreases. This is the second end that affects the mechanical properties.
Third, the flame retardant system mostly contains trace amounts of volatile components, which are partially precipitated during the foaming and curing stages, which may lead to an increase in foam shrinkage rate and affect dimensional stability. If the flame retardant is both mobile and has a subtle corrosion on the performance of the board for a long time, it is more difficult to avoid it.
However, with the improvement of technology, the particle size of the new environmentally friendly flame retardant is fine, and the compatibility with polystyrene is gradually better, and its impact on the physical properties of XPS board can be reduced to very little. If the production process is adjusted according to the optimal formula, the structure and distribution of the bubble cells are controlled, and various indicators are checked, the physical properties of XPS board, although the flame retardant masterbatch is added, are not a big problem, and are sufficient to meet the needs of practical projects. Weigh the benefits, carefully choose the proportion of materials, and follow science in order to achieve the wonders of heat preservation and flame retardancy.

The flame retardant masterbatch is used for extruding polystyrene sheets, which is produced by modern technology to inhibit the spread of fire and ensure building safety. However, to test whether it meets the environmental protection standards, it is necessary to also check its raw materials, process, emissions, and impact on human body and the environment to understand its benefits.
At present, the flame retardants used in the flame retardant masterbatch are mostly halogen-free flame retardants, among which phosphorus and nitrogen are the most popular. Compared with traditional bromine and chlorine-containing flame retardants, halogen-free flame retardants are less likely to precipitate harmful gases during combustion, less smoke and dust, and have little harm to the environment. Today, the environmental protection regulations of various countries, the REACH and RoHS of the European Union, and the GB standards of the country are all stricter and more detailed, and certain harmful elements are clearly prohibited. If the formulation, production, and use of the masterbatch comply with these standards, those who pass the inspection can be said to comply with environmental protection laws.
If the masterbatch contains bromine compounds, it may release toxic substances such as polybrominated diphenyl ethers and polybrominated biphenyls when decomposed at high temperature, which not only pollutes the air, but also threatens human health. Therefore, it has been gradually banned in recent years. Looking at the process, if the manufacturer actively adopts clean technology and reasonably disposes of waste gas, wastewater, and residues without spilling, it will not be a big problem. After the product is in service, whether it can be properly recycled is also the big end of environmental protection. If the polystyrene board has non-degradable flame retardants, incineration or burial are not good methods and must be considered.
With the passage of time, the trend of environmental protection is becoming more and more obvious. Only by clearly abiding by the laws, adopting green materials, optimizing the process, and taking into account the way of production and recycling can it be called environmental protection masterbatch. If you only pursue profits, ignore laws, or contain toxic ingredients, and abuse the market, it will be a big disaster to the ecology and people will be uneasy. The environmental protection of the masterbatch is related to national regulations and international standards. It is also the sincerity of production and advanced technology. It cannot be discussed uniformly. When it depends on the specific product, its materials, processes, applications and end point disposal can be carefully examined. In this way, it can be identified whether it is environmentally friendly or not.

Flame Retardant Masterbatch is used for XPS board, and its storage and transportation have strict rules, which must be carefully followed. Its properties are mostly flammable, moisture-prone, and perishable products, so it should be protected from light, sealed, far from fire, and dry. Its properties remain unchanged and its effectiveness is not reduced. Store it in a warehouse. The first choice is to use a well-ventilated house. It should not be exposed to the hot sun to prevent its high temperature from causing denaturation. It should be kept away from heat sources and fire, placed at room temperature, suitable for between 5 and 35 degrees Celsius, and the humidity should not be too high to prevent melting and moisture.
Its packaging should be sealed composite bags or barrels, and there are fixed, moisture-proof, and leak-proof facilities outside. When stacking, it should not be mixed with acids, alkalis, oils and other harmful chemicals, nor should it be placed next to food and beverages. Place in a clean place, with wooden boards on the bottom to prevent damage to the packaging. No heavy pressure, appropriate amount of accumulation, to ensure ventilation. Where the packaging is damaged, it must be replaced immediately, and it must not be allowed to leak out.
When handling, when handling with care, avoid using sharp instruments, and do not crack the plastic bag. Do not operate brutally to prevent leakage of contents and loss of goods. During transportation, it must be covered with a caravan to prevent rain and sun exposure. During transportation, it is necessary to keep the load stable and prevent dumping. Long-distance transportation, especially pay attention to temperature changes. In case of humid climate, desiccant should be added to protect it.
In case of heavy snow, frost or wet weather, do not open the box for inspection at will, and must be dried and cleaned before operation. If there is a special discoloration, agglomeration, or odor, you must inquire about the reason and do not use it without authorization. The storage period is generally one year. If it is overdue, it must be tested and qualified before use.
People are the main thing, and things are more expensive than prevention. Adhering to the scientific way of storage and transportation can not only ensure the constant performance of Flame Retardant Masterbatch, but also prevent disasters before they occur, which is conducive to industrial safety and environmental safety. Be careful and do it without future troubles.