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Why is it necessary to introduce a modifier when preparing Ammonium Polyphosphate (APP-3)?
The preparation of this material is based on the methods of APP-1 and APP-2, with a modification process added. After the polymerization is completed, the molten material is mixed with 5% silane coupling agent, sheared by a twin-screw extruder, so that the coupling agent molecules are grafted to the ends of the APP chains, and Ammonium Polyphosphate (APP-3) is obtained. The modifier is like a bridge, with one end connected to APP and the other end connected to the resin, which can enhance the compatibility of the two. The unmodified one is easy to agglomerate when mixed with polypropylene. After modification, the dispersed particle size is reduced to less than 5μm, and the tensile strength retention rate is increased from 60% to 85%. The process is like coating wheat grains with sugar, so that the originally hydrophobic APP can be tightly bonded with the resin, which is suitable for incompatible systems such as polyolefins, and broadens the application scenarios.
What is the effect of Ammonium Polyphosphate (APP-3) in polyolefin plastics?
This product is a good material for polyolefin flame retardant. When used in polypropylene, the addition amount is 25%, supplemented with 10% talcum powder, and the oxygen index is increased from 18% to 28%, reaching UL94 V-0 level. After injection molding, the surface of the product has no pitting, and the glossiness is 20% higher than that of unmodified APP. Its melt flow rate matches that of polypropylene, and the die head is not blocked during processing, and the production efficiency is increased by 15%. When burning, the carbon layer expands to 12 times the original thickness, and the structure is dense, which can block oxygen for more than 30 minutes. In the -40℃ low-temperature impact test, the notched impact strength reaches 4kJ/m², which is only 10% lower than that of the unadded one, so it is suitable for low-temperature resistant polyolefin products such as refrigerator liners and car bumpers.
How is the weather resistance of Ammonium Polyphosphate (APP-3)?
After accelerated aging test, this product was exposed to ultraviolet rays for 1000 hours, and the whiteness retention rate was 85%, which is much higher than APP-1's 60%. After being immersed in 5% salt water for 90 days, the weight loss rate was only 2%, indicating that it has excellent salt spray resistance and is suitable for marine environment products. After being immersed in 80℃ hot water for 30 days, the flame retardant efficiency was retained by 90%, while the retention rate of APP-2 during the same period was 75%. Its modified layer can resist photooxidation and hydrolysis, and the molecular chain is not easy to break. Therefore, in polyolefin products such as outdoor pipes and greenhouse films that are exposed to the natural environment for a long time, the service life is extended by 1 times compared with ordinary APP, and frequent replacement is not required.
What are the requirements for the ratio of Ammonium Polyphosphate (APP-3) and synergists?
When used in combination with Melamine Cyanurate (MCA), the optimal ratio is 3:1. When used for polyethylene, the vertical combustion self-extinguishing time is less than 3 seconds, which is 50% shorter than using APP-3 alone. Adding 15% aluminum hydroxide can reduce the smoke density level from 70 to 40, which meets the requirements of smoking control places such as subways. When mixed with pentaerythritol at a ratio of 4:1, the carbon layer expands more evenly, the thickness deviation is less than 0.5mm, and the thermal insulation is stable. If there are too many synergists, the concentration of APP-3 will be diluted, resulting in flame retardant failure; if there are too few, the synergistic effect cannot be exerted, so accurate weighing is required, such as adjusting the formula, and the efficiency varies greatly.
What are the energy consumption and benefits of Ammonium Polyphosphate (APP-3) production?
The production of this product requires additional modification process, and the energy consumption is 10% higher than that of APP-2, but the price per ton of product can be increased by 15%. Due to its excellent performance, the qualified rate of downstream products has increased by 20%, and the comprehensive cost has been reduced. Based on an annual output of 10,000 tons, although 500 tons of coal are consumed more, an additional profit of 3 million yuan can be created. Its modified process can recycle 95% of volatiles for cost-saving and environmentally friendly use. Therefore, although the initial investment is high, it is still economically beneficial in the long run and is the best choice for large-scale production.
Why is it necessary to introduce a modifier when preparing Ammonium Polyphosphate (APP-3)?
The preparation of this material is based on the methods of APP-1 and APP-2, with a modification process added. After the polymerization is completed, the molten material is mixed with 5% silane coupling agent, sheared by a twin-screw extruder, so that the coupling agent molecules are grafted to the ends of the APP chains, and Ammonium Polyphosphate (APP-3) is obtained. The modifier is like a bridge, with one end connected to APP and the other end connected to the resin, which can enhance the compatibility of the two. The unmodified one is easy to agglomerate when mixed with polypropylene. After modification, the dispersed particle size is reduced to less than 5μm, and the tensile strength retention rate is increased from 60% to 85%. The process is like coating wheat grains with sugar, so that the originally hydrophobic APP can be tightly bonded with the resin, which is suitable for incompatible systems such as polyolefins, and broadens the application scenarios.
What is the effect of Ammonium Polyphosphate (APP-3) in polyolefin plastics?
This product is a good material for polyolefin flame retardant. When used in polypropylene, the addition amount is 25%, supplemented with 10% talcum powder, and the oxygen index is increased from 18% to 28%, reaching UL94 V-0 level. After injection molding, the surface of the product has no pitting, and the glossiness is 20% higher than that of unmodified APP. Its melt flow rate matches that of polypropylene, and the die head is not blocked during processing, and the production efficiency is increased by 15%. When burning, the carbon layer expands to 12 times the original thickness, and the structure is dense, which can block oxygen for more than 30 minutes. In the -40℃ low-temperature impact test, the notched impact strength reaches 4kJ/m², which is only 10% lower than that of the unadded one, so it is suitable for low-temperature resistant polyolefin products such as refrigerator liners and car bumpers.
How is the weather resistance of Ammonium Polyphosphate (APP-3)?
After accelerated aging test, this product was exposed to ultraviolet rays for 1000 hours, and the whiteness retention rate was 85%, which is much higher than APP-1's 60%. After being immersed in 5% salt water for 90 days, the weight loss rate was only 2%, indicating that it has excellent salt spray resistance and is suitable for marine environment products. After being immersed in 80℃ hot water for 30 days, the flame retardant efficiency was retained by 90%, while the retention rate of APP-2 during the same period was 75%. Its modified layer can resist photooxidation and hydrolysis, and the molecular chain is not easy to break. Therefore, in polyolefin products such as outdoor pipes and greenhouse films that are exposed to the natural environment for a long time, the service life is extended by 1 times compared with ordinary APP, and frequent replacement is not required.
What are the requirements for the ratio of Ammonium Polyphosphate (APP-3) and synergists?
When used in combination with Melamine Cyanurate (MCA), the optimal ratio is 3:1. When used for polyethylene, the vertical combustion self-extinguishing time is less than 3 seconds, which is 50% shorter than using APP-3 alone. Adding 15% aluminum hydroxide can reduce the smoke density level from 70 to 40, which meets the requirements of smoking control places such as subways. When mixed with pentaerythritol at a ratio of 4:1, the carbon layer expands more evenly, the thickness deviation is less than 0.5mm, and the thermal insulation is stable. If there are too many synergists, the concentration of APP-3 will be diluted, resulting in flame retardant failure; if there are too few, the synergistic effect cannot be exerted, so accurate weighing is required, such as adjusting the formula, and the efficiency varies greatly.
What are the energy consumption and benefits of Ammonium Polyphosphate (APP-3) production?
The production of this product requires additional modification process, and the energy consumption is 10% higher than that of APP-2, but the price per ton of product can be increased by 15%. Due to its excellent performance, the qualified rate of downstream products has increased by 20%, and the comprehensive cost has been reduced. Based on an annual output of 10,000 tons, although 500 tons of coal are consumed more, an additional profit of 3 million yuan can be created. Its modified process can recycle 95% of volatiles for cost-saving and environmentally friendly use. Therefore, although the initial investment is high, it is still economically beneficial in the long run and is the best choice for large-scale production.
Why is it necessary to introduce a modifier when preparing Ammonium Polyphosphate (APP-3)?
The preparation of this material is based on the methods of APP-1 and APP-2, with a modification process added. After the polymerization is completed, the molten material is mixed with 5% silane coupling agent, sheared by a twin-screw extruder, so that the coupling agent molecules are grafted to the ends of the APP chains, and Ammonium Polyphosphate (APP-3) is obtained. The modifier is like a bridge, with one end connected to APP and the other end connected to the resin, which can enhance the compatibility of the two. The unmodified one is easy to agglomerate when mixed with polypropylene. After modification, the dispersed particle size is reduced to less than 5μm, and the tensile strength retention rate is increased from 60% to 85%. The process is like coating wheat grains with sugar, so that the originally hydrophobic APP can be tightly bonded with the resin, which is suitable for incompatible systems such as polyolefins, and broadens the application scenarios.
What is the effect of Ammonium Polyphosphate (APP-3) in polyolefin plastics?
This product is a good material for polyolefin flame retardant. When used in polypropylene, the addition amount is 25%, supplemented with 10% talcum powder, and the oxygen index is increased from 18% to 28%, reaching UL94 V-0 level. After injection molding, the surface of the product has no pitting, and the glossiness is 20% higher than that of unmodified APP. Its melt flow rate matches that of polypropylene, and the die head is not blocked during processing, and the production efficiency is increased by 15%. When burning, the carbon layer expands to 12 times the original thickness, and the structure is dense, which can block oxygen for more than 30 minutes. In the -40℃ low-temperature impact test, the notched impact strength reaches 4kJ/m², which is only 10% lower than that of the unadded one, so it is suitable for low-temperature resistant polyolefin products such as refrigerator liners and car bumpers.
How is the weather resistance of Ammonium Polyphosphate (APP-3)?
After accelerated aging test, this product was exposed to ultraviolet rays for 1000 hours, and the whiteness retention rate was 85%, which is much higher than APP-1's 60%. After being immersed in 5% salt water for 90 days, the weight loss rate was only 2%, indicating that it has excellent salt spray resistance and is suitable for marine environment products. After being immersed in 80℃ hot water for 30 days, the flame retardant efficiency was retained by 90%, while the retention rate of APP-2 during the same period was 75%. Its modified layer can resist photooxidation and hydrolysis, and the molecular chain is not easy to break. Therefore, in polyolefin products such as outdoor pipes and greenhouse films that are exposed to the natural environment for a long time, the service life is extended by 1 times compared with ordinary APP, and frequent replacement is not required.
What are the requirements for the ratio of Ammonium Polyphosphate (APP-3) and synergists?
When used in combination with Melamine Cyanurate (MCA), the optimal ratio is 3:1. When used for polyethylene, the vertical combustion self-extinguishing time is less than 3 seconds, which is 50% shorter than using APP-3 alone. Adding 15% aluminum hydroxide can reduce the smoke density level from 70 to 40, which meets the requirements of smoking control places such as subways. When mixed with pentaerythritol at a ratio of 4:1, the carbon layer expands more evenly, the thickness deviation is less than 0.5mm, and the thermal insulation is stable. If there are too many synergists, the concentration of APP-3 will be diluted, resulting in flame retardant failure; if there are too few, the synergistic effect cannot be exerted, so accurate weighing is required, such as adjusting the formula, and the efficiency varies greatly.
What are the energy consumption and benefits of Ammonium Polyphosphate (APP-3) production?
The production of this product requires additional modification process, and the energy consumption is 10% higher than that of APP-2, but the price per ton of product can be increased by 15%. Due to its excellent performance, the qualified rate of downstream products has increased by 20%, and the comprehensive cost has been reduced. Based on an annual output of 10,000 tons, although 500 tons of coal are consumed more, an additional profit of 3 million yuan can be created. Its modified process can recycle 95% of volatiles for cost-saving and environmentally friendly use. Therefore, although the initial investment is high, it is still economically beneficial in the long run and is the best choice for large-scale production.
Why is it necessary to introduce a modifier when preparing Ammonium Polyphosphate (APP-3)?
The preparation of this material is based on the methods of APP-1 and APP-2, with a modification process added. After the polymerization is completed, the molten material is mixed with 5% silane coupling agent, sheared by a twin-screw extruder, so that the coupling agent molecules are grafted to the ends of the APP chains, and Ammonium Polyphosphate (APP-3) is obtained. The modifier is like a bridge, with one end connected to APP and the other end connected to the resin, which can enhance the compatibility of the two. The unmodified one is easy to agglomerate when mixed with polypropylene. After modification, the dispersed particle size is reduced to less than 5μm, and the tensile strength retention rate is increased from 60% to 85%. The process is like coating wheat grains with sugar, so that the originally hydrophobic APP can be tightly bonded with the resin, which is suitable for incompatible systems such as polyolefins, and broadens the application scenarios.
What is the effect of Ammonium Polyphosphate (APP-3) in polyolefin plastics?
This product is a good material for polyolefin flame retardant. When used in polypropylene, the addition amount is 25%, supplemented with 10% talcum powder, and the oxygen index is increased from 18% to 28%, reaching UL94 V-0 level. After injection molding, the surface of the product has no pitting, and the glossiness is 20% higher than that of unmodified APP. Its melt flow rate matches that of polypropylene, and the die head is not blocked during processing, and the production efficiency is increased by 15%. When burning, the carbon layer expands to 12 times the original thickness, and the structure is dense, which can block oxygen for more than 30 minutes. In the -40℃ low-temperature impact test, the notched impact strength reaches 4kJ/m², which is only 10% lower than that of the unadded one, so it is suitable for low-temperature resistant polyolefin products such as refrigerator liners and car bumpers.
How is the weather resistance of Ammonium Polyphosphate (APP-3)?
After accelerated aging test, this product was exposed to ultraviolet rays for 1000 hours, and the whiteness retention rate was 85%, which is much higher than APP-1's 60%. After being immersed in 5% salt water for 90 days, the weight loss rate was only 2%, indicating that it has excellent salt spray resistance and is suitable for marine environment products. After being immersed in 80℃ hot water for 30 days, the flame retardant efficiency was retained by 90%, while the retention rate of APP-2 during the same period was 75%. Its modified layer can resist photooxidation and hydrolysis, and the molecular chain is not easy to break. Therefore, in polyolefin products such as outdoor pipes and greenhouse films that are exposed to the natural environment for a long time, the service life is extended by 1 times compared with ordinary APP, and frequent replacement is not required.
What are the requirements for the ratio of Ammonium Polyphosphate (APP-3) and synergists?
When used in combination with Melamine Cyanurate (MCA), the optimal ratio is 3:1. When used for polyethylene, the vertical combustion self-extinguishing time is less than 3 seconds, which is 50% shorter than using APP-3 alone. Adding 15% aluminum hydroxide can reduce the smoke density level from 70 to 40, which meets the requirements of smoking control places such as subways. When mixed with pentaerythritol at a ratio of 4:1, the carbon layer expands more evenly, the thickness deviation is less than 0.5mm, and the thermal insulation is stable. If there are too many synergists, the concentration of APP-3 will be diluted, resulting in flame retardant failure; if there are too few, the synergistic effect cannot be exerted, so accurate weighing is required, such as adjusting the formula, and the efficiency varies greatly.
What are the energy consumption and benefits of Ammonium Polyphosphate (APP-3) production?
The production of this product requires additional modification process, and the energy consumption is 10% higher than that of APP-2, but the price per ton of product can be increased by 15%. Due to its excellent performance, the qualified rate of downstream products has increased by 20%, and the comprehensive cost has been reduced. Based on an annual output of 10,000 tons, although 500 tons of coal are consumed more, an additional profit of 3 million yuan can be created. Its modified process can recycle 95% of volatiles for cost-saving and environmentally friendly use. Therefore, although the initial investment is high, it is still economically beneficial in the long run and is the best choice for large-scale production.