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I. Characteristics
PET plastic molecular structure is highly symmetric, has a certain crystalline orientation ability, so it has a high film and into the sex. PET plastic has good optical properties and weather resistance, amorphous PET plastic has good optical transparency. In addition PET plastic has excellent abrasion resistance and friction and dimensional stability and electrical insulation. PET made of bottles with high strength, good transparency, non-toxic, anti-penetration, light weight, high production efficiency and so by a wide range of applications. PBT and PET molecular chain structure is similar, most of the properties are also the same, just the main chain of molecules by two methylene into four, so the molecule is more flexible, more excellent processing performance. Processing performance is more excellent.
PET is a milky white or light yellow highly crystalline polymer with a smooth and glossy surface. Creep resistance, fatigue resistance, good friction resistance, small abrasion and high hardness, with the largest toughness in thermoplastics; good electrical insulation properties, little affected by temperature, but poor corona resistance. Non-toxic, weather resistance, good stability against chemicals, high hygroscopicity, drying before moulding is necessary. Resistant to weak acids and organic solvents, but not resistant to hot water immersion, not alkali resistant.
PET resin has a high glass transition temperature, slow crystallisation, long moulding cycle, long moulding cycle, large moulding shrinkage, poor dimensional stability, crystallised moulding is brittle, low heat resistance, etc.
Second, the use of
1. Film and sheet
Thermoplastic polyurethane film and sheet can be extruded by extruder, and its thickness can be from a few microns to a few millimeters, and pigments can be added to get a variety of colours. TPU films have good abrasion resistance, puncture resistance, tear resistance, elasticity, adhesion, and weldability, so they can be used to prepare conveyor belts, and, depending on the type of TPU, conveyor belts made from them can convey dry, wet, and fatty foods. Speciality TPUs fulfil the requirements of the former German Federal Health Commission for food contact materials as well as those of the US Food and Drug Administration. Recently, there has been a great deal of interest in powdered TPUs, which are expected to replace PVC in the automotive industry.
TPUs have a low permeability to air and can be used as a barrier material. Other uses for TPU films include:
¢Ù Welded hollow products;
¢Ú Fabric lamination;
¢Û Protective coatings;
¢Û Protective coatings; ¢Ü Foam sealing;
¢Ý Wear-resistant coatings.
5. Mechanical products and other applications
The high Young's modulus and load resistance of thermoplastic polyurethanes allow them to be used in the manufacture of tooth conveyor belts. The TPUs used are usually polyester-type TPUs with a hardness of Shore A85-93 and are moulded by extrusion.
TPUs are also used for couplings. Depending on the application and size of the parts to be coupled, polyester TPUs with hardnesses ranging from Shore A85 to Shore D60 are used, which have a high Young's modulus and are favourable for energy diffusion. Taking advantage of the vibration-damping properties of TPUs, polyester-based TPUs can be moulded into inlays for modern office equipment. Screens made of TPU can separate dry and wet materials (e.g. stones, coal and coke) and are also used for picking, washing and separation. Due to the high abrasion resistance of thermoplastic polyurethane, these screens can be used for a longer period of time than normal rubber or steel screens. TPU can also be used as cable sheathing due to its high abrasion resistance, cut resistance and tear resistance.
6. Pharmaceutical applications
Thermoplastic polyurethane and human skin compatibility is very good, polyether-type thermoplastic polyurethane and human blood and tissue compatibility is also good, so the use of thermoplastic polyurethane production of blood transfusion vessels, and people have even developed a thermoplastic polyurethane made of microporous, biodegradable, flexible and blood-compatible artificial blood vessels.
Nanjing Suminoe Precision Machinery Co., Ltd. has professional sheet production line, the company's main sheet machine manufacturing production line: PET/PRET sheet production line, PP sheet production line, PP vacuum profile extrusion line, PP/PC vacuum sheet production line, PC/PP corrugated sheet production line, PVDF photovoltaic backing sheet production line, PMMA acrylic sheet production line, PE waterproofing membrane production line, high-performance barrier sheet production line. High-performance barrier sheet production line, optical panel production line, multilayer co-extruded sheet production line, etc.
Translated with DeepL.com (free version)
PET plastic molecular structure is highly symmetric, has a certain crystalline orientation ability, so it has a high film and into the sex. PET plastic has good optical properties and weather resistance, amorphous PET plastic has good optical transparency. In addition PET plastic has excellent abrasion resistance and friction and dimensional stability and electrical insulation. PET made of bottles with high strength, good transparency, non-toxic, anti-penetration, light weight, high production efficiency and so by a wide range of applications. PBT and PET molecular chain structure is similar, most of the properties are also the same, just the main chain of molecules by two methylene into four, so the molecule is more flexible, more excellent processing performance. Processing performance is more excellent.
PET is a milky white or light yellow highly crystalline polymer with a smooth and glossy surface. Creep resistance, fatigue resistance, good friction resistance, small abrasion and high hardness, with the largest toughness in thermoplastics; good electrical insulation properties, little affected by temperature, but poor corona resistance. Non-toxic, weather resistance, good stability against chemicals, high hygroscopicity, drying before moulding is necessary. Resistant to weak acids and organic solvents, but not resistant to hot water immersion, not alkali resistant.
PET resin has a high glass transition temperature, slow crystallisation, long moulding cycle, long moulding cycle, large moulding shrinkage, poor dimensional stability, crystallised moulding is brittle, low heat resistance, etc.
Second, the use of
1. Film and sheet
Thermoplastic polyurethane film and sheet can be extruded by extruder, and its thickness can be from a few microns to a few millimeters, and pigments can be added to get a variety of colours. TPU films have good abrasion resistance, puncture resistance, tear resistance, elasticity, adhesion, and weldability, so they can be used to prepare conveyor belts, and, depending on the type of TPU, conveyor belts made from them can convey dry, wet, and fatty foods. Speciality TPUs fulfil the requirements of the former German Federal Health Commission for food contact materials as well as those of the US Food and Drug Administration. Recently, there has been a great deal of interest in powdered TPUs, which are expected to replace PVC in the automotive industry.
TPUs have a low permeability to air and can be used as a barrier material. Other uses for TPU films include:
¢Ù Welded hollow products;
¢Ú Fabric lamination;
¢Û Protective coatings;
¢Û Protective coatings; ¢Ü Foam sealing;
¢Ý Wear-resistant coatings.
5. Mechanical products and other applications
The high Young's modulus and load resistance of thermoplastic polyurethanes allow them to be used in the manufacture of tooth conveyor belts. The TPUs used are usually polyester-type TPUs with a hardness of Shore A85-93 and are moulded by extrusion.
TPUs are also used for couplings. Depending on the application and size of the parts to be coupled, polyester TPUs with hardnesses ranging from Shore A85 to Shore D60 are used, which have a high Young's modulus and are favourable for energy diffusion. Taking advantage of the vibration-damping properties of TPUs, polyester-based TPUs can be moulded into inlays for modern office equipment. Screens made of TPU can separate dry and wet materials (e.g. stones, coal and coke) and are also used for picking, washing and separation. Due to the high abrasion resistance of thermoplastic polyurethane, these screens can be used for a longer period of time than normal rubber or steel screens. TPU can also be used as cable sheathing due to its high abrasion resistance, cut resistance and tear resistance.
6. Pharmaceutical applications
Thermoplastic polyurethane and human skin compatibility is very good, polyether-type thermoplastic polyurethane and human blood and tissue compatibility is also good, so the use of thermoplastic polyurethane production of blood transfusion vessels, and people have even developed a thermoplastic polyurethane made of microporous, biodegradable, flexible and blood-compatible artificial blood vessels.
Nanjing Suminoe Precision Machinery Co., Ltd. has professional sheet production line, the company's main sheet machine manufacturing production line: PET/PRET sheet production line, PP sheet production line, PP vacuum profile extrusion line, PP/PC vacuum sheet production line, PC/PP corrugated sheet production line, PVDF photovoltaic backing sheet production line, PMMA acrylic sheet production line, PE waterproofing membrane production line, high-performance barrier sheet production line. High-performance barrier sheet production line, optical panel production line, multilayer co-extruded sheet production line, etc.
Translated with DeepL.com (free version)