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Characteristics of POM materials

Characteristics of POM materials Polyoxymethylene (POM), also known as polypropylene, is an engineering plastic with a range of properties that make it widely used in a variety of applications. The following are the main characteristics of POM materials: Mechanical properties: POM has high hardness, rigidity and strength. Its ability to maintain these mechanical properties over a wide temperature range makes it an excellent structural material. Low friction coefficient: The POM surface has good self-lubricating properties, making it an excellent sliding material. This makes POM widely used in bearings, gears, sliders and other applications that require low friction and wear. Dimensional stability: POM materials have good dimensional stability in environments with humidity changes and temperature changes, and are not prone to expansion or contraction. Chemical Resistance: POM has good chemical resistance to many chemicals, including oils, solvents and alkalis. This makes POM widely used in the automotive and mechanical engineering fields. Electrical insulation: POM is a good electrical insulation material with excellent electrical properties. It is commonly used in electrical and electronic equipment. Fatigue resistance: POM material has good fatigue resistance, making it suitable for parts and structures that require long-term use. Ease of processing: POM is easy to process and can manufacture parts of various shapes through injection molding and other methods. This ease of processing makes it ideal for manufacturing complex parts. Wear resistance: POM has good wear resistance, making it excellent in applications that require wear resistance, such as gears, bearings, etc. Anti-aging: POM has good UV and oxidation resistance, so it can maintain stability outdoors or in environments exposed to sunlight for a long time. Although POM has many advantages, it should be noted that it may be sensitive to some strongly alkaline media. In addition, use at high temperatures may cause the performance of POM to degrade. Therefore, the characteristics of the POM need to be carefully considered to ensure its suitability in a specific application.

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11/23

The difference between nylon 66 and nylon 6

The difference between nylon 66 and nylon 6 Nylon 66 (Nylon 66) and Nylon 6 (Nylon 6) are two common nylon materials. They have some differences in chemical structure, properties and applications. Here are their main differences: Chemical structure: Nylon 66: Nylon 66 is produced through the polymerization reaction of terephthalic acid and hexamethylenediamine. Each monomer in this chemical structure contains 6 carbon atoms, hence the name nylon 66. Nylon 6: Nylon 6 is made from caprolactam through polymerization. The monomer in this chemical structure contains 6 carbon atoms, hence the name nylon 6. Melting point: Nylon 66: Nylon 66 generally has a higher melting point, giving it higher thermal stability. This allows nylon 66 to maintain better performance in high-temperature environments. Nylon 6: Nylon 6 has a relatively low melting point but still has good heat resistance. Under some low temperature and high humidity conditions, nylon 6 may perform better than nylon 66. Water absorbency: Nylon 66: Nylon 66 is relatively absorbent and has high water absorbency. Performance may be degraded in humid environments. Nylon 6: Nylon 6 has low water absorbency and is relatively less sensitive to humidity. This allows nylon 6 to remain relatively stable in wet conditions. Mechanical behavior: Nylon 66: Nylon 66 generally has higher strength and hardness, as well as better wear resistance, making it suitable for applications requiring high mechanical properties. Nylon 6: Nylon 6 is relatively low in strength and hardness, but has good toughness and impact properties. Application areas: Nylon 66: Due to its high strength, heat resistance and wear resistance, nylon 66 is often used in fields that require high performance, such as automotive parts, industrial parts, and electronic devices. Nylon 6: Nylon 6 is commonly used in textiles, ropes, plastic parts, electrical insulation and other applications due to its better toughness and lower cost. In general, there are some differences in chemical structure and properties between nylon 66 and nylon 6, so when selecting materials, their advantages and disadvantages need to be considered based on specific application requirements.

2023

11/23

What plastic is the hardest?

What plastic is the hardest? Polyetheretherketone (PEEK) is an engineering plastic and is considered one of the hardest plastics. PEEK has excellent high-temperature resistance, chemical stability, mechanical properties and wear resistance, making it widely used in high-performance applications. The main characteristics of PEEK include: Hardness: PEEK has very high hardness, comparable to some metal materials. This makes it excellent in some applications that require high hardness and rigidity. High-temperature resistance: PEEK is able to maintain its mechanical properties at high temperatures, and its glass transition temperature can reach approximately 143°C (289°F). This makes PEEK suitable for engineering applications in high-temperature environments. Chemical stability: PEEK has good corrosion resistance to many chemicals, including acids, alkalis, solvents, etc., making it an excellent material for use in harsh chemical environments. Electrical properties: PEEK has excellent electrical insulation properties, so it is also widely used in the electrical and electronic fields. Wear resistance: PEEK exhibits good wear resistance, making it suitable for applications requiring high wear resistance, such as bearings, gears, etc. Due to its excellent performance, PEEK is often used in applications in high-demand fields such as aerospace, medical, electronics, automotive, and chemical industries. It should be noted that the high performance of PEEK is usually accompanied by a relatively high cost. When selecting plastic materials, various factors should be considered based on the requirements of the specific application.

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11/23

What plastics are suitable for 3D printing?

What plastics are suitable for 3D printing? 3D printing technology can use many types of plastic materials, each with its own unique properties and applications. Here are some plastic materials commonly used for 3D printing: Polylactic Acid (PLA): PLA is a biodegradable plastic usually based on corn starch. It is environment-friendly, easy to use and suitable for beginners. PLA is suitable for making concept models and decorations. Polypropylene (PP): PP is a plastic that is chemically resistant, lightweight and flexible. It is suitable for making parts that require flexibility and chemical resistance. Polyethylene (PE): PE is a common plastic suitable for some simple 3D printing applications. Low-density polyethylene (LDPE) is generally softer, while high-density polyethylene (HDPE) is harder. Polyethylene Terephthalate Glycol (PETG): PETG is a strong, transparent plastic that has the ease of printing of PLA. It is suitable for applications requiring transparency and abrasion resistance. Acrylonitrile Butadiene Styrene (ABS): ABS is a tough, strong plastic suitable for making parts with high strength requirements. However, printing on ABS requires higher printing temperatures and ventilation. Nylon: Nylon is a strong, abrasion-resistant plastic suitable for applications requiring abrasion resistance and strength. However, 3D printing of nylon often requires specialized printers and environmental controls. Polystyrene (PS): PS is suitable for making lightweight parts, usually used for concept models and prototypes. TPU (Thermoplastic Polyurethane): TPU is an elastic, soft plastic suitable for making parts that require flexibility and elasticity, such as rubber seals and insoles. Each material has its own unique properties, and choosing the appropriate material depends on your printing needs, the purpose of the part, and the desired performance.

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11/23

What kind of plastic cannot be 3D printed?

What kind of plastic cannot be 3D printed? While many plastic materials can be used in 3D printing, not all plastics are suitable for the process. Here are some plastics that are often not well suited for or cannot be used with traditional 3D printing techniques such as fused deposition modeling: Fluoropolymers: Fluoropolymers like polytetrafluoroethylene (PTFE) are generally not suitable for 3D printing because their melting points are usually very high, while traditional 3D printing technology usually requires the material to melt at relatively low temperatures. High-temperature engineering plastics: Although some high-temperature engineering plastics, such as polyetheretherketone (PEEK) and polyphenylene sulfide (PPS), have excellent high-temperature resistance, their high melting point and thermal sensitivity make them less suitable for traditional 3D printing technology. Epoxy Resin: Traditional 3D printing technology is often difficult to use epoxy resin because it requires UV curing or other special curing processes. Polyurethane: Polyurethane is typically a flexible and soft material, but its chemical properties and curing requirements make it less common in traditional 3D printing. Certain biodegradable plastics: The degradation mechanisms of some biodegradable plastics may not be suitable for traditional 3D printing processes. This includes some environmentally friendly materials such as starch-based plastics. It should be noted that with the development of 3D printing technology, new materials and technologies are constantly emerging, so some materials that were not suitable in the past may be adapted or new materials developed in the future. In addition, some special 3D printing technologies, such as light-curing 3D printing, can handle some materials that are difficult to process with traditional 3D printing.

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What materials cannot be used for 3D printing?

What materials cannot be used for 3D printing? Generally speaking, almost any material that can be melted and shaped can be used for 3D printing to some extent. However, some materials may not be suitable or difficult to use with traditional 3D printing technology due to special properties, processing requirements, or other technical limitations. Here are some materials that may not be suitable or available for 3D printing: Metals: Traditional 3D printing techniques (such as fused deposition modeling) often have difficulty working directly with metals. Although there are some metal 3D printing technologies, such as Selective Laser Melting (SLM) and Electron Beam Melting (EBM), they belong to the field of Metal Additive Manufacturing (Metal Additive Manufacturing) and are different from traditional plastics. 3D printing is very different. Silicone and rubber-based materials: Due to their elasticity and fluidity, silicone and rubber-based materials can be difficult to process in traditional 3D printing. Some special light-curing 3D printing technologies (such as SLA or DLP) can handle some elastic materials but require special handling and equipment. Ceramics: Ceramics usually require high-temperature sintering or other special processing processes, and traditional 3D printing technology may make it difficult to use ceramic materials directly. There are some technologies specifically used for ceramic 3D printing, such as Selective Laser Sintering (SLS). Glass: Traditional 3D printing technology usually cannot be used directly on glass because it requires high-temperature melting and special processing. However, there are some new technologies being developed that try to use glass as a 3D printing material. Certain biomaterials: Despite the availability of bioprinting technology, some complex biomaterials, such as living cells, may be difficult to use directly with traditional 3D printing technology. It is important to note that 3D printing technology is constantly evolving and new materials and technologies are emerging, so these limitations may change. Especially in the field of advanced 3D printing technology, research and applications involving metals, ceramics, biomaterials, etc. are constantly advancing.

2023

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What does titanium alloy do?

What does titanium alloy do? Titanium alloys are composed of titanium and other metallic elements and have a series of excellent properties, so they are widely used in many fields. The following are some common functions and applications of titanium alloys:   Lightweight and high strength: Titanium alloy has the characteristics of low density and high strength. It is lighter than many traditional structural materials such as steel, but can provide similar or higher strength. This makes titanium alloys widely used in the aerospace and aviation industries, reducing the weight of aircraft and spacecraft and improving fuel efficiency and performance. Corrosion Resistance: Titanium alloys have excellent corrosion resistance and can withstand oxidation, acidic and alkaline environments. This makes titanium alloys an ideal choice for fields with high corrosion resistance requirements such as marine engineering, chemical equipment, and seawater treatment equipment. Biocompatibility: Titanium alloy has good biocompatibility, is basically non-irritating to human tissues, and is not likely to cause rejection reactions. Therefore, titanium alloys are widely used in the medical field, such as making artificial joints, implants, dental and surgical instruments, etc. High-temperature strength: Titanium alloys can maintain high strength and stability at high temperatures, so they are used to manufacture high-temperature parts, such as turbine blades for jet engines and combustion chambers in aero-engines. Electrical conductivity: Titanium alloy has good electrical conductivity, so it is also used in electronic devices and aviation electrical systems, such as making aviation cables and connectors. Plasticity: Titanium alloy has good plasticity and formability, and can be made into complex-shaped parts through various processing methods, making it suitable for a variety of industrial fields. Overall, the unique combination of properties of titanium alloys makes it a versatile material widely used in aerospace, medical, chemical, energy and other fields.

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Why is titanium alloy the most commonly used material in the medical industry?

Why is titanium alloy the most commonly used material in the medical industry? There are several reasons why titanium alloys are widely used in the medical industry:   Biocompatibility: Titanium alloy has excellent biocompatibility, is basically non-irritating to human tissues, and is not likely to cause rejection reactions. This makes titanium alloys ideal for manufacturing medical implants and prostheses, such as artificial joints, dental implants, bone plates and screws.   Lightweight and high strength: Titanium alloy is lighter than many other metal materials, but has high strength. In medical devices and implants, this lightweight yet high-strength property helps reduce device weight, reduce patient burden, and improve implant durability.   Corrosion Resistance: Titanium alloys have excellent corrosion resistance, which is very important for use in the human body. The internal environment may contain salt water, body fluids and other corrosive substances. Titanium alloys can resist corrosion of materials in these environments, ensuring the long-term stability of implants and medical devices.   High-temperature strength: Titanium alloy can still maintain high strength and stability at high temperatures. This is crucial for some medical equipment that needs to be used in high-temperature environments, such as sterilization instruments. Plasticity: Titanium alloy has good plasticity and formability, and can be made into complex-shaped parts through various processing methods to adapt to the design needs of medical equipment and implants.   Non-magnetic: Titanium alloys are non-magnetic, which is important when manufacturing implants that require magnetic resonance imaging (MRI). Traditional metals such as stainless steel may interfere with MRI, but titanium alloys can avoid this problem. Taking the above factors into consideration, titanium alloys have become widely used materials in the medical industry due to their unique properties, especially in the manufacture of implants and high-demand medical devices.

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