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With the diversification of raw materials sources and rapid expansion of production capacity in the domestic polypropylene industry, China's polypropylene industry has developed rapidly and the dependence on imports has shown a downward trend. Although domestically produced modified polypropylene can not compete with imported high-end products, with the acceleration of new technology development, the ability of independent innovation has been continuously enhanced, and domestic high-end polypropylene products are rapidly developing and gradually replacing imports. The following are a number of modified polypropylene products that are currently widely used and are rapidly evolving.
1, ultra-fine talcum powder filled PP
PP plus talc powder can improve the heat distortion temperature of PP plastic, increase the dimensional stability of the product, reduce the molding shrinkage and increase the rigidity; the addition of superfine talcum powder masterbatch, as a reinforcing filler for polypropylene, can not only be remarkable Improve the rigidity, surface hardness, creep resistance and electrical insulation of polypropylene products, and also improve the impact strength of polypropylene, improve the impact resistance of PP, and impart excellent surface properties to the system; talc also has melt flow promotion The role of the agent, as well as synergistic agents with certain flame retardants.
Effect of talc particle size on PP reinforcing properties: The talc particle size is an important factor in the preparation of filled PP composites. As the talc particle size decreases, the surface area increases and the powder's reinforcing properties increase. Mainly because the surface defects of small particles are relatively small, the possibility of physical and chemical bonding with PP is large, and the interface bonding performance is good. Under the impact of external force, more micro-cracks and plastic deformation will occur, but further ultra-fine, The surface of the powder is significantly increased, the interaction between the particles is too strong, and the powder tends to agglomerate, which affects the dispersibility in the PP.
Application of PP and talc automotive special materials The automobile is mainly focused on energy saving, environmental protection and low cost. The plasticization of automotive materials is one of the keys to achieve this direction. Polypropylene modified materials are increasingly used in automotive parts due to their light weight, low cost, easy processing, mature products, recyclable and excellent comprehensive properties. At present, with the improvement of the manufacturing level of PP special materials, the application of modified PP in automobiles will be more extensive. The leading products are PP modified special materials for manufacturing bumpers and instrument panels.
2, whisker enhanced PP
Whisker has a special position in automotive lightweight materials, because whiskers can provide high modulus, scratch resistance, and good appearance.
Calcium carbonate whiskers are high-performance reinforced tougheners for composite materials. When they are added to polymer materials, they often have poor adhesion to the matrix due to uneven dispersion. Especially when using high filling amount, it will cause compounding. The performance of the material drops so sharply that the product is difficult to process and use.
Calcium sulfate whiskers can be used as reinforcing spices for plastics, rubber, polyurethane, metal, etc., such as adding calcium sulfate whiskers to plastics, which can improve mechanical strength, heat resistance and dimensional stability.
Whisker is a new generation of high performance enhancer for the development of modern composite materials. It has microscopic strengthening ability, excellent wear and sliding resistance, high insulation performance, excellent physical properties, good formability, and reinforced composite materials. Recycling cycle performance and other characteristics. A new generation of reinforced composite materials is a composite material filled with whiskers as a reinforcing agent. It has high strength, high modulus, small specific gravity, high temperature resistance and corrosion resistance. It has been used as a high-strength and lightweight car in the automotive field. The frame, the body cover, the collision energy absorbing member and the vibration-damping sound-insulating device are high-strength, heat-resistant and wear-resistant components, and are an ideal new composite material for realizing light weight, energy saving and high performance of the automobile.
Source: DT new material - DT polymer online editing and finishing: China Powder Technology Network
1, ultra-fine talcum powder filled PP
PP plus talc powder can improve the heat distortion temperature of PP plastic, increase the dimensional stability of the product, reduce the molding shrinkage and increase the rigidity; the addition of superfine talcum powder masterbatch, as a reinforcing filler for polypropylene, can not only be remarkable Improve the rigidity, surface hardness, creep resistance and electrical insulation of polypropylene products, and also improve the impact strength of polypropylene, improve the impact resistance of PP, and impart excellent surface properties to the system; talc also has melt flow promotion The role of the agent, as well as synergistic agents with certain flame retardants.
Effect of talc particle size on PP reinforcing properties: The talc particle size is an important factor in the preparation of filled PP composites. As the talc particle size decreases, the surface area increases and the powder's reinforcing properties increase. Mainly because the surface defects of small particles are relatively small, the possibility of physical and chemical bonding with PP is large, and the interface bonding performance is good. Under the impact of external force, more micro-cracks and plastic deformation will occur, but further ultra-fine, The surface of the powder is significantly increased, the interaction between the particles is too strong, and the powder tends to agglomerate, which affects the dispersibility in the PP.
Application of PP and talc automotive special materials The automobile is mainly focused on energy saving, environmental protection and low cost. The plasticization of automotive materials is one of the keys to achieve this direction. Polypropylene modified materials are increasingly used in automotive parts due to their light weight, low cost, easy processing, mature products, recyclable and excellent comprehensive properties. At present, with the improvement of the manufacturing level of PP special materials, the application of modified PP in automobiles will be more extensive. The leading products are PP modified special materials for manufacturing bumpers and instrument panels.
2, whisker enhanced PP
Whisker has a special position in automotive lightweight materials, because whiskers can provide high modulus, scratch resistance, and good appearance.
Calcium carbonate whiskers are high-performance reinforced tougheners for composite materials. When they are added to polymer materials, they often have poor adhesion to the matrix due to uneven dispersion. Especially when using high filling amount, it will cause compounding. The performance of the material drops so sharply that the product is difficult to process and use.
Calcium sulfate whiskers can be used as reinforcing spices for plastics, rubber, polyurethane, metal, etc., such as adding calcium sulfate whiskers to plastics, which can improve mechanical strength, heat resistance and dimensional stability.
Whisker is a new generation of high performance enhancer for the development of modern composite materials. It has microscopic strengthening ability, excellent wear and sliding resistance, high insulation performance, excellent physical properties, good formability, and reinforced composite materials. Recycling cycle performance and other characteristics. A new generation of reinforced composite materials is a composite material filled with whiskers as a reinforcing agent. It has high strength, high modulus, small specific gravity, high temperature resistance and corrosion resistance. It has been used as a high-strength and lightweight car in the automotive field. The frame, the body cover, the collision energy absorbing member and the vibration-damping sound-insulating device are high-strength, heat-resistant and wear-resistant components, and are an ideal new composite material for realizing light weight, energy saving and high performance of the automobile.
Source: DT new material - DT polymer online editing and finishing: China Powder Technology Network
Cooling System Contain Radiator and Hydraulic Oil Cooler. The Material most is Aluminum.
Fuction: Radiator is the excavator engine surplus and useless heat, from the engine out, so that the engine in a variety of speed or driving conditions can maintain normal temperature operation.
Packaging Detail:
1. Acquiescently neutral packing
2. According to the customers' request
3. Delivery Detail: Within 20 days after deposit
Cooling System
Cooling System,Engine Cooling System,Air Cooling System,Ac Cooling System
Jining Tongderui Construction Machinery Co., Ltd. , https://www.tdr-excavatorparts.com