Polyurethane, also known as superior glue or spring glue, is a polymer called isocyanate. It falls between plastic and rubber, making it an elastomer with exceptional properties. Ordinary plastics and rubber cannot match its excellent comprehensive characteristics.
1. Characteristics of polyurethane casters
Polyurethane casters boast exceptional characteristics, including remarkable wear resistance, effective resistance against chemical corrosion, superior strength, heightened elasticity, reduced pressure sensitivity, outstanding shock absorption capabilities, remarkable tear resistance, excellent radiation resistance, impressive load-bearing capabilities, and exceptional shock absorption. Additionally, the hardness range of polyurethane wheels is quite extensive, spanning from Shore A10 to Shore A100. The versatility and reliability offered by polyurethane casters make them an ideal choice for various applications.
As of now, there are already numerous products available in the market that surpass the Shaw A100 and provide even better performance. Moreover, polyurethane casters are known for their superior sound-absorbing properties and their ability to keep the wheels silent while they are in motion. This makes them an excellent option for achieving a noise-free environment. The features of PU wheels make them a highly suitable material for caster manufacturing.
Polyurethane casters have multiple processing options available. They can be manipulated and molded using various techniques to achieve desirable results.
(2) Just like regular plastics, polyurethane casters can also be created using processes such as injection, extrusion, calendering, and blow molding. Specifically, casters made of CPU can be formed through a variety of methods.
Polyurethane caster elastomers can undergo plasticizing, mixing, and vulcanization processes, just like general rubber materials (referred to as MPU). These methods are used to shape and enhance the properties of the elastomers. By plasticizing the polyurethane, it becomes more flexible and easier to process. Mixing various additives, such as fillers or colorants, into the polyurethane mixture can modify its properties, such as hardness or resistance to abrasion. Finally, the vulcanization process involves cross-linking the polymer chains through chemical reactions, resulting in improved strength, durability, and heat resistance of the elastomer. Overall, these processes allow for the creation of versatile and high-performance polyurethane caster elastomers.
Polyurethane casters are versatile and can be fabricated using various methods, such as liquid rubber casting, molding and spraying, potting, and centrifugal molding. For instance, CPU is a type of polyurethane casters that can be produced using the centrifugal molding technique. Additionally, polyester or polyether materials can be used to make these high-quality casters. Regardless of the method used, polyurethane casters are a reliable solution for reducing wear and tear and enhancing mobility in various applications.
3. The use environment of polyurethane casters:
The versatile nature of this product makes it an ideal choice for a wide range of applications. Its high demand is due to its extensive use in the medical, food processing, and manufacturing industries. Furthermore, it is well-suited for logistics, warehousing, and machinery handling purposes. It boasts a wide temperature range of -35 to 80°C, making it suitable for use in various environments.
◆Polypropylene (PP) casters
Polypropylene, also known as PP plastic, is known for its exceptional heat resistance. With a heat deformation temperature ranging from 80 to 100 ℃, it can endure boiling water without any complications. In addition to its remarkable ability to withstand high temperatures, PP exhibits excellent resistance to stress cracking, making it a reliable choice for various applications. Moreover, this versatile material boasts a high bending fatigue life and is often referred to as "Bai Zhe glue." Its outstanding toughness and chemical resistance further enhance its suitability for a wide range of uses.
1. The advantages of polypropylene casters
(1) Our materials are recyclable, non-toxic, tasteless, and environmentally friendly, making them an excellent choice for anyone concerned about sustainability.
There are several notable properties of this substance, including its resistance to oil, acids, and alkalis. It also displays remarkable durability against common organic solvents, such as acids and alkalis, which have minimal impact on its overall composition.
This material is resilient, sturdy, and capable of withstanding repeated stress and strain, making it resistant to cracking under tension. It is also impervious to humidity, maintaining its reliability regardless of the surrounding environment.
(4) It has the advantage of cheap price.
2. The use environment of polypropylene casters:
This product is versatile and can be used on different surfaces, making it ideal for applications in factory handling, warehousing, logistics, and machinery manufacturing industries. It is widely used and relied upon in these sectors. The operating temperature range for this product is -15°C to 80°C, allowing for flexible and efficient performance in various conditions.
◆Nylon (PA) casters
Nylon, also known as polyamide or PA, is a type of plastic made up of polyamide resins. These resins can be produced through the polycondensation of diamines and dibasic acids, or by the ring-opening polymerization of lactams derived from the dehydration of amino acids.
1. The advantages of nylon PA casters
(2) Excellent toughness and high tensile and compressive strength are key traits of this material, which boasts great mechanical strength overall.
The impact strength of this material surpasses that of regular plastics, thanks to its exceptional ability to absorb shock and dampen vibration. Its strong resilience makes it an excellent choice for applications requiring these properties.
The material under consideration boasts of a softening point that is on the higher side and exhibits excellent heat resistance. It can effortlessly endure temperatures as high as 150 ℃ for prolonged periods. Additionally, combining glass fiber with high-temperature nylon casters can enhance the thermal deformation temperature to above 250 ℃. Therefore, this material is an apt choice for applications that require the components to undergo exposure to high temperatures over a protracted time.
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This material has a plethora of useful properties. Firstly, it has the ability to extinguish itself, making it ideal for use in situations where fire safety is a concern. Additionally, it is non-toxic and odorless, so there is no danger of harmful fumes being released. Furthermore, this material has excellent resilience against the elements, making it perfect for outdoor applications. It is also resistant to biological erosion and has effective antibacterial and mildew resistance, making it ideal for areas where hygiene is a priority.