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What are the main ingredients of Flame Retardant Masterbatch for Polyamide?
Polyamide flame retardant masterbatch has four main components: First, it is an organic phosphorus compound, which is an essential flame retardant drug, such as ammonium polyphosphate, phosphate ester and phosphonate ester, which can release phosphorus during combustion to form a film and isolate the air to suppress the flame. Second, nitrogen-based flame retardants, such as melamine, cyanuric acid and their derivatives, generate nitrogen at high temperature, block oxygen flow, and reduce flammability sharply. Third, halogen-based additives, mainly including bromine compounds and chlorides, are added to adjust the amount, preserve physical properties, decompose at high temperature, generate hydrogen halides, capture free radicals, and terminate the chain reaction. In this world, it is becoming more environmentally friendly, and more halogens are discarded, and halogen-free is still used. The fourth is a synergist, such as antimony trioxide, zinc oxide, aluminum hydroxide or magnesium hydroxide, etc., which cooperates with organic and inorganic main agents, which benefits flame retardancy, adjusts the decomposition temperature, and enhances thermal stability.
In addition, because the masterbatch needs to be dispersed in the polyamide matrix, the carrier resin is usually based on the polyamide itself, and the compatibility agent is added to maintain the uniform distribution of the main agent. In addition to the main agent, lubricants, dispersants, anti-static agents, etc. are added to improve processing and physical properties.
The reason is that the flame retardant masterbatch has the effect of flame removal in the microscopic realm. High-grade polyamide is flammable and burns rapidly in case of open flame. The main agent of the masterbatch can inhibit the combustion chain by foaming and carbonization in the combustion zone, or releasing non-flammable gases, or capturing high-energy free radicals. In the test of the finished product, the main agent ratio is different, and it is used for the high and low flame retardant grades.
In recent years, it pays attention to environmental protection and safety. There are many inventions of halogen-free and non-toxic flame retardants. Only by combining high efficiency, low smoke and function can the polyamide flame retardant masterbatch contain chemical compatibility, organic phosphorus and nitrogen, cooperate with inorganic, auxiliary carrier affinity, and be used together, can the polyamide products have flame resistance and are suitable for various uses such as electronics, electrical appliances, automobiles, textiles, etc.
What types of polyamide materials are suitable for Flame Retardant Masterbatch for Polyamide?
Flame retardant masterbatch is a special additive used in polyamide materials to give it flame retardant properties. Its suitable types cover a wide range of polyamide materials, especially polyamide 6 (PA6) and polyamide 66 (PA66). PA6 and PA66, both tough and tough, are widely used, and can be seen in automotive, electronics, electrical appliances, textiles and other fields. Its molecular structure contains amide bonds, although it gives excellent mechanical and heat resistance, it is naturally flame retardant and flammable in case of fire, so it must be improved with flame retardant masterbatch.
This flame retardant masterbatch should be prepared with more consideration for its affinity with polyamide molecules, so that it can be evenly dispersed without failure. It is not only used for PA6 and PA66, but also suitable for a variety of special polyamides such as polyamide 11 (PA11), polyamide 12 (PA12), polyamide 610 (PA610), polyamide 612 (PA612), etc. PA11 and PA12 exhibit flexibility and low temperature resistance due to the difference in the length of methylene contained in their molecular chains. They are widely used in pipes, films, and high-end parts. However, the choice of flame retardant masterbatch must also take into account its processing characteristics.
In addition to basic polyamides, many copolymerized and modified polyamides, such as glass fiber reinforced polyamides, mineral-filled polyamides, and alloy polyamides, can be used for flame retardant masterbatches. Only the formula and dosage should be adjusted according to the type of polyamide used, processing conditions and end-use requirements, so that its flame retardant effect and physical properties can be combined. Therefore, the application range of flame retardant masterbatch is wide, and it can be flexibly selected and optimized according to the nature and application of polyamide materials.
As for the type of flame retardant masterbatch, or bromine-based, phosphorus-based, nitrogen-based, or halogen-free environmental protection, it can be used according to the specific properties of polyamide and the safety level of the product. The ancients said: "The material used must be accurate", and the material should be used appropriately to ensure that the product can achieve harmony between mechanics, heat and flame retardancy. From this perspective, the flame retardant masterbatch can be applied to a variety of polyamides, but the application should be reviewed for material properties and carefully matched, so that the safety performance of polyamides can be significantly improved, achieving a state of perfection.
What is the percentage of Flame Retardant Masterbatch for Polyamide?
However, when it comes to the use of Polyamide, considering its use in fireworks, it is necessary to apply a flame retardant masterbatch (Flame Retardant Masterbatch) to increase its protective effect. If it is a masterbatch, its properties are specially designed to increase flame retardancy, and it is applied to Polyamide materials to make it flame-resistant. Examine the method of use, the rate depends on the proportion of the added material, covering different masterbatches, the required share may be similar or different, but there are rules to follow.
Generally, when the flame retardant masterbatch is added to Polyamide, it is usually between 3% and 10%. What ratio is applicable depends on actual needs. If it is mild flame retardant, follow the lower limit of three points; if you want higher protection, the upper limit will tend to be ten points, or slightly adjusted according to specific standards. In case of national prescribed flame retardant grade UL94 V-0 or V-2, the appropriate addition should be based on the test results. In the actual process, it is necessary to refer to the content of active ingredients in the masterbatch itself, and the amount varies, and the addition ratio also changes accordingly. If the prepared masterbatch contains high main agent, the addition can be reduced, otherwise it needs to be slightly increased. This matter is always adjusted in engineering applications, not static.
The addition of the flame retardant masterbatch must be thoroughly mixed with the resin, so that it can exert its work. However, if the amount is too much, it will often affect the mechanical properties and color of the product. Therefore, it is important to balance the flame retardant and material properties. As for the benefits of operation, it is better to rely on the practical experience and test results of the formulator to obtain the most suitable ratio. The shape and thickness of the product, the load strength, etc. are also sufficient to affect the flame retardant effect and cannot be generalized. In case of special requirements, it is also necessary to combine other additives and apply them together.
In short, when the flame retardant masterbatch is added to Polyamide, the commonly used ratio is often between 3% and 10%. The required flame retardant grade, effective content of masterbatch, process conditions and final performance requirements of the product are all factors to be considered. Only through personal testing and testing can we obtain good results. Believe it, this is the practice today.
Does the Flame Retardant Masterbatch for Polyamide affect the physical properties of the product?
Flame retardant masterbatch is used in polyamide products, and its impact on the physical properties of the product should be carefully considered. Polyamides are light and tough, with good toughness and strength, and are widely used in engineering materials. However, if you want to give flame retardant properties, adding flame retardant masterbatch to raw materials can greatly improve its flame resistance level, but it is quite relevant to the profit and loss of physical properties.
The flame retardant masterbatch used to cover the flame retardant masterbatch is mostly phosphorus-containing, bromine-containing, or inorganic additives. When these substances are mixed into the polymer system and fail to form a complete homogeneous fusion with the polyamide polymer chain, their dispersion and compatibility are all key. If the dispersion is good, the particle size is small, and it is not easy to form a group, it will have little impact on the performance of the product. If the dispersion is not uniform and agglomerates into pieces, it is easy to form a source of defects, which will reduce the tensile strength, impact strength, elongation at break and other indicators of the product, and increase the brittleness and rough surface.
And the thermal properties of the product may also be affected by the flame retardant masterbatch. At high temperatures, the decomposition products of the masterbatch may interfere with the regularity of the polyamide molecular chain, resulting in a decrease in crystallinity, glass transition temperature and thermal distortion temperature. However, high-quality flame retardant masterbatches on the market are mostly treated by surface coating or microencapsulation to enhance compatibility with polyamide, trying to minimize the loss of mechanical properties. However, some high-efficiency flame retardant systems, such as halogen type and red phosphorus type, if their content is too high, the intrinsic properties of the polyamide matrix will still be inevitably damaged.
The processing technology of the machine is also affected. The temperature and shear rate are slightly controlled, and the flame retardant components are easy to decompose or degrade the polymer, which will also affect the performance of the finished product. Therefore, in actual use, it is necessary to take into account the flame retardant requirements and mechanical properties, select the appropriate masterbatch variety and addition ratio, and optimize the processing parameters.
To sum up, the addition of flame retardant masterbatch may affect the physical properties of polyamide products. The depth of the impact depends on the type of masterbatch, dosage, dispersion and compatibility, and the control of the processing technology. If you want to do a good job, you must first choose good materials and balance them according to your needs in order to achieve both flame retardancy and physical beauty.
What Flame Retardant Standards Does the Flame Retardant Masterbatch for Polyamide Meet?
Flame suppression masterbatch, used for polyamide materials, meets the flame retardant standards and has their own regulations. Based on its summary, it is listed as follows: The first American UL94 is a globally accepted standard, which is divided into V-0, V-1, and V-2. It is graded according to the number of times the test piece is burned, extinguished, and the presence or absence of droplets. There are also GWFI and GWIT, which are respectively the ignition test of the hot wire and the ignition temperature of the hot wire, which are limited to 850 ° C and 960 ° C, etc., to measure the material's ability to prevent fire from electrical short circuits, which must be followed for electronic and electrical purposes.
Continued European standards, EN 60695-2, EN 13501, EN ISO 11925-2, EN ISO 9239-1, etc., are all authoritative and suitable for construction, engineering, vehicles and other fields. Among them, EN 13501 is the fire protection grade of building materials, which is divided into six grades from A to F, and its reaction and combustion performance are strictly evaluated. In Japan, JIS K 7201 and in China, GB 8624 are the main judges. Materials with V-0 or higher grades can mostly meet the general needs of the market.
Masterbatch formula, various organic halogen, phosphorus, halogen-free, etc., with the characteristics of polyamide, fine-tuning its dosage and process to ensure the flame retardant efficacy of the material, and also requires the environmental protection requirements of European Union RoHS and REACH. After strict testing of the masterbatch, its finished products can pass the above international standards, and common compliance credentials are attached to the technical data table to prove the quality sold.
When burned again, the flame retardant components in the masterbatch release smoke, inhibit the spread of fire, or form a carbonized layer to protect its structure. This is through vertical and horizontal combustion tests to measure its effectiveness. Polyamide is flammable by nature, and it is difficult to meet the above standards without the addition of masterbatches. The use of masterbatches is actually relied on by the product industry.
To sum up, the flame suppression masterbatch for polyamide, according to the formula and test, can usually meet UL94 V-0, GB 8624, EN 13501, GWFI, GWIT and other flame retardant standards, which are important in the market today. For example, electronic and electrical components, automotive parts, and new building materials all rely on their compliance and safety, so they are widely promoted and applied.