As a leading Polyethylene Fire Resistance Masterbatch 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 main components and functions of Polyethylene Fire Resistance Masterbatch?
Polyethylene Fire Resistance Masterbatch is also a polyethylene flame retardant masterbatch. Its main ingredients are polyethylene carriers, which are used to carry flame retardant agents, supplemented by various flame retardant substances, such as aluminum hydroxide, magnesium hydroxide, bromine-based compounds, phosphorus-based compounds, etc. Or due to different applications, synergistic agents and dispersants are added to help each ingredient to be uniformly precipitated in polyethylene. To make it, it needs to be melted at high temperature and highly mixed, so that each agent and the carrier can be melted together before it can be shaped into particles, which is convenient for subsequent plastic processing.
The person it is used for is to improve the flame retardancy of polyethylene materials. Polyethylene is flammable by nature, and it spreads rapidly in case of fire. It is toxic to smoke and difficult to self-extinguish. If used alone, it often causes fire. This addition of flame retardant masterbatch, its main components can decompose and release inert gas during combustion, or decompose endothermally, reduce temperature, and delay combustion potential. Or form a dense carbon layer on the surface of the material to isolate oxygen, block the source of combustion support, and inhibit the spread of flame. Brominated components can capture free radicals and destroy the combustion chain reaction. When phosphorus-based substances melt and precipitate, they form a glassy film that covers the surface and can effectively isolate heat. Synergist agents such as antimony compounds can enhance the effect of the main flame retardant and make the reaction more thorough. The use of
dispersant, the auxiliary agent is evenly distributed between the carriers, so that all parts of the product have the same flame retardant effect, without the difference of density. The process used requires the accuracy of temperature and pressure to ensure that the composition does not dissolve and has the best performance. Made into masterbatch, it can be mixed into pure polyethylene as needed, molded by injection molding, extrusion and other processes, and is widely used in wire and cable, electronic devices, building boards and other fields. With this method, polyethylene can maintain its original flexibility, excellent flame retardancy, long-term durability, and is indispensable for safety.
How is Polyethylene Fire Resistance Masterbatch Dispersed in Polyethylene Materials?
Where polyethylene fire resistance masterbatch (Polyethylene Fire Resistance Masterbatch) is dispersed in polyethylene material, the first step and the second time is appropriate. The masterbatch is made of refractory and polyethylene, so its rationality is similar, and the self-energy is compatible with the original. If you want to achieve uniform dispersion, you must carefully follow the method step by step.
At the beginning, the masterbatch is suitable for the purpose of polyethylene resin, and the weight and type of refractory also match the finished product. Before mixing, first measure the original polyethylene and refractory masterbatch properly to calculate the proportion, so that the refractory effect is sufficient, but not the original performance.
In operation, either use high-quality melt mixing, or high-quality snails, add polyethylene to melt, and slowly add the refractory masterbatch to it. Mixing twice makes the masterbatch uniformly distributed in polyethylene. If the snail is damaged, it will be carefully dispersed at the same time due to its shear force. And in the appropriate temperature, the high-quality refractory will decompose, and the low-quality mixing will not work. The speed is also low, to prevent agglomeration or separation.
After mixing, cold-cutting begins. The granulation process is based on the re-aggregation of rapid-cooling and small refractory polyethylene, and the grain shape is convenient for processing. By injection molding, blow molding, extrusion and other methods, the finished product is completed, and the distribution of fire resistance and masterbatch is uniform and good.
And the dispersion of the refractory masterbatch helps the application of surface active dispersion. If it helps to cooperate, it can reduce the interfacial force, make the refractory particles slightly surrounded, and improve the dispersion in one step.
In terms of the dispersion of polyethylene refractory masterbatch, there is a way to combine the ratio, accuracy, shear, assist, and cold. Only by careful operation can we disperse and ensure that the refractory efficiency is not lost.
What is the proportion of Polyethylene Fire Resistance Masterbatch?
Polyethylene flame retardant masterbatch is a commonly used additive in plastic processing to improve the safety performance of polymers in flames. The amount of its dosage is closely related to the use of the product, the required flame retardant grade, and the particularity of the matrix resin. In this case, the addition ratio of flame retardant masterbatch varies from about 3% to 10%. If it is a general civilian product, such as wire coating, daily utensils, or needs to reach UL94 V-2 grade flame retardant, it is usually 3 to 5% of the five-point amount. To achieve higher flame retardant efficacy, such as UL94 V-0, or engineering materials, fire boards, and building materials, the dose should be appropriately increased to 8 to 10%.
However, there are also flexibility in this. The content of flame retardant active ingredients in the masterbatch is different. If high-concentration masterbatch is used, the amount required can be reduced, otherwise it should be selected according to its efficiency. In particular, it should be noted that if the amount of masterbatch is too large, it may affect the physical properties such as color, strength, and extension of the product. Therefore, the principle of appropriate treatment is to take into account the flame retardant needs without compromising the fundamental properties.
When operating, it is advisable to pre-check the compatibility and dispersion uniformity of the flame retardant masterbatch and the polyethylene substrate, and adjust the high and low proportions to prepare samples. It is verified by combustion experiments. The proportion used shall be subject to the measured effect. Today's process progress, there are different halogen and halogen-free flame retardant systems, and the performance of masterbatch is also slightly different. Halogen systems generally have strong flame retardant performance and low addition amount. Halogen-free green systems may require higher addition amount to achieve compliance.
Summarize the rationale, the proportion of polyethylene flame retardant masterbatch, when depending on product specifications, application fields, flame retardant requirements, masterbatch activity and substrate suitability, is roughly 3% to 10%. When making a formula decision, especially when testing, multi-consideration, careful consideration, so as to be clear and appropriate. It should not be limited to 10%, nor should it be added lightly. This is the way of process experience.
How does Polyethylene Fire Resistance Masterbatch affect the physical properties of polyethylene products?
Polyethylene is a common polymer material, tough and tough, and many products are made. However, it is flammable, and it melts in case of fire, and the smoke is large and dripping, and the burn is endless. Today, there is a flame retardant masterbatch, which is combined with polyethylene, which can resist fire and is widely favored. It is a masterbatch, mixed with flame retardant substances, such as halogen compounds, expanded graphite, aluminum hydroxide, etc., which fuses into polyethylene with melting, giving it flame retardant energy, reducing combustion rate, and inhibiting smoke formation.
However, the combination of this masterbatch also affects the physical properties. First, the strength is slightly reduced. The cover flame retardant material and the polyethylene body, the interface compatibility or poor, if the dispersion is not uniform, the attractive force is weak, the overall structure is loose, resulting in tensile strength, tear strength slightly reduced. Second, the toughness is damaged. The masterbatch is mostly inorganic fillers or polymer additives, if aggregated between the matrix, can cause brittle fracture, so that the ductility and impact strength are reduced, especially the product is easy to crack. Third, the thermal stability may change. Flame retardants can absorb heat decomposition, absorb part of the heat to delay combustion, but this also makes the product in high temperature environment performance changes, softening temperature is reduced. Fourth, the surface gloss is damaged. If the masterbatch is not well dispersed, the polymer surface is not very uniform, resulting in the gloss of the product is not as good as before, and the appearance is slightly inferior to the glossiness of natural polyethylene.
However, modern technology is becoming more and more sophisticated, the finer the particle size of the flame retardant masterbatch, the more uniform the distribution, the interface modifier is applied, and the loss of its physical properties has been greatly alleviated. If the materials are well selected and the process is correct, the flame retardant, heat resistance and mechanical properties of the product can be checked and balanced. In short, polyethylene plus flame retardant masterbatch, although it slightly detracts from the physical beauty, can be replaced with safety, wider use, and the advantages outweigh the disadvantages.
What flame retardant standards does Polyethylene Fire Resistance Masterbatch meet?
Polyethylene flame retardant masterbatch is used in modern polymer industry to increase the fire resistance of its materials, and is widely used in electronic appliances, building decoration, transportation and other fields. It is based on polyethylene resin, supplemented by high-efficiency flame retardant additives, and is melted and granulated at high temperature. The flame retardant standards it follows are formulated in accordance with national regulations and international authorities. The content is detailed and advanced in the industry.
First discuss the Chinese standard, GB 8624 "Classification of combustion performance of building materials and products", GB/T 2408 "Plastics, flammability test methods, oxygen index method", GB/T 5455 "Textiles, determination of combustion performance, flame spread method" are all commonly used by people. Its polyethylene flame retardant masterbatch has been identified to reach the grades of V-0, V-1, V-2, etc., especially V-0. It self-extinguishes when burning, and the droplets do not ignite cotton. This is an excellent product. The oxygen index value is often above 28%, indicating that it is refractory.
UL94 standard is commonly used in Europe and the United States, especially the authority of the global flame retardant evaluation of plastics. UL94 is divided into HB, V-2, V-1, V-0 grades, with V-0 as the most. It is instantly self-extinguishing when it breaks fire, and does not burn cotton when it burns. There are also EN 13501-1 European building materials combustion performance standards, B and C grades or above, which are called high flame retardant products. Germany DIN 4102, B1 grade is also a high standard.
Others such as ASTM E84 (American Society for Testing and Materials), CSA C22.2 (Canadian Standard), and IEC 60695 (International Electrotechnical Commission on Flame Test) are also global regulations for measuring flame retardant masterbatches. Through the above tests, polyethylene flame retardant masterbatch can enter the European, American, Asia-Pacific and other international markets.
In summary, polyethylene flame retardant masterbatch complies with a number of national and international flame retardant standards, such as UL94 V-0, GB 8624 B1 grade, EN 13501-1 B grade and even DIN 4102-B1. Its preparation method has excellent performance and is widely adopted by all industries. However, in practical applications, what standards it can meet still depends on the raw materials, addition ratio and application environment. The production process is cautious and the test is qualified to ensure the reliability and safety of the product.