Select high-efficiency heating materials:

• Graphene: It has ultra-high thermal conductivity and carrier mobility, and can quickly convert electrical energy into thermal energy. In low-temperature environments, its excellent electrical properties can rapidly raise the temperature of the heating film, reducing the heating delay caused by low temperatures. For example, the application of graphene heating film in some high-end warm clothing can quickly provide warmth to the human body in cold weather.
• High performance carbon fiber: Not only does it have high heating efficiency, but it can also generate far-infrared radiation that is beneficial to the human body. In low-temperature environments, carbon fiber heating membranes have good stability, and far-infrared radiation can promote blood circulation in the human body, indirectly improving the insulation effect and enhancing overall heating efficiency.

Strengthen insulation measures:

• Add thermal insulation layer: wrap thermal insulation materials around the heating film, such as polystyrene foam, polyurethane foam, etc., to reduce heat loss to the low-temperature environment. For example, when using heating film for underfloor heating, laying insulation board under the heating film can effectively prevent heat from transferring downwards, allowing more heat to stay in the indoor space and improving heating efficiency.
• Improve spatial sealing: For spaces using heating membranes, such as rooms, equipment enclosures, etc., enhance their sealing. Install sealing strips, double-layer glass, etc. to reduce the penetration of cold air and minimize heat loss caused by air convection. In the cold winter, a well sealed room can better maintain the heat generated by the heating film and improve the actual efficiency of its use.

Intelligent temperature control:

• Adopting high-precision temperature controller: Equipped with a high-precision temperature controller, it can more accurately sense temperature changes and adjust the working status of the heating film in a timely manner. In low-temperature environments, the thermostat can accurately control the power output of the heating film based on the slight difference between the set temperature and the actual temperature, avoiding excessive or insufficient operation of the heating film due to inaccurate temperature control and improving heating efficiency.

Adapt to suitable power sources:

• Stable voltage output: For AC powered heating films, select the appropriate power frequency based on their material characteristics and design requirements. The appropriate frequency can make the electronic movement inside the heating film smoother, the current distribution more reasonable, and thus improve the heating efficiency.

1. Raw material costs

• Carbon fiber quality: The quality of carbon fiber is one of the key factors determining its price. High quality carbon fiber has higher strength, better conductivity, and thermal stability. The heating wires produced by well-known carbon fiber brands are relatively expensive because these carbon fibers perform well in terms of raw material purity, uniformity of fiber bundles, etc., ensuring excellent and stable performance of the heating wires.

•  Auxiliary materials: In addition to the carbon fiber body, auxiliary materials such as insulation layer and sheath of the heating wire will also affect the price. High quality insulation materials, such as fluoroplastics (PTFE), polyvinyl chloride (PVC), etc., have good electrical insulation, high temperature resistance, and corrosion resistance, which can improve the safety and service life of heating wires, but the cost is also high. For example, the price of carbon fiber heating wires using high-performance fluoroplastics as insulation layers will be higher than that of ordinary PVC insulated heating wires.

2. Production process

• Manufacturing accuracy: High precision manufacturing processes can ensure consistent performance of carbon fiber heating wires. For example, in the winding and weaving process of carbon fiber filaments, if the technology is advanced and the precision is high, it can make the resistance of the heating wire uniform and the heating efficiency stable. By adopting advanced automated production equipment and precise manufacturing processes, the price of the produced heating wire will correspondingly increase, as these processes can effectively reduce the rate of defective products and improve product quality.

• The complexity of the production process: If the production process involves special processing steps, such as surface modification of carbon fibers, manufacturing of multi-layer composite structures, etc., it will increase production costs and thus affect prices. For example, carbon fiber heating wires that have undergone special surface treatment can enhance the bonding strength between carbon fiber and other materials, improve the overall performance of the heating wire, but this additional treatment process will increase the price.

3. Power and specifications

• Power size: Generally speaking, carbon fiber heating wires with higher power have relatively higher prices. This is because high-power heating wires require the use of more carbon fiber materials, and in the design and manufacturing process, many factors such as heat dissipation and safety need to be considered, resulting in higher requirements for technology and materials. For example, high-power carbon fiber heating wires used for industrial heating (such as those with a power of over 1000W) are more expensive than ordinary household heating wires with lower power (such as 100-500W).

• Length and wire diameter specifications: Carbon fiber heating wires with different length and wire diameter specifications have different prices. A longer heating wire naturally has a higher price, while a thicker wire diameter usually means higher heating efficiency and carrying capacity, and the price will correspondingly increase. For example, a carbon fiber heating wire with a diameter of 6mm will be more expensive than a similar heating wire with a diameter of 3mm.

4. Application areas and market demand

• Market supply and demand relationship: When the demand for far infrared heating cable in the market exceeds the supply, prices often rise; On the contrary, prices may decrease. For example, during the peak season of winter heating demand, the market demand for carbon fiber underfloor heating lines increases significantly. If the supply is relatively tight, the price will rise. In some off-season or emerging application areas where market demand has not yet fully opened up, prices may remain relatively stable or decrease to stimulate market demand.

Terminal blocks are essential components in electrical systems, providing a safe and efficient way to connect wires and manage electrical connections. However, like all electrical components, they have a lifespan influenced by various factors. Understanding how long a terminal block can be used and what affects its longevity is crucial for maintaining safe and reliable electrical systems.

Factors Influencing the Lifespan of Terminal Blocks

Material Quality

The quality of materials used in terminal blocks significantly affects their durability. Terminal blocks made from high-quality plastics and metals are more resistant to wear, heat, and corrosion. Look for terminal blocks made from materials that meet industry standards for electrical and mechanical properties.

Electrical Load

Every terminal block has a specified current rating. Exceeding this rating can cause overheating, which may lead to premature failure. Regularly assess the electrical load on the terminal block to ensure it remains within safe limits.

Environmental Conditions

Terminal blocks are often exposed to various environmental factors, such as humidity, temperature fluctuations, and chemical exposure. Environments with high moisture or corrosive substances can degrade the materials, shortening the terminal block's lifespan. Choosing terminal blocks rated for specific environmental conditions can help extend their usage.

Mechanical Stress

During installation, terminal blocks may experience physical stress from vibrations, shocks, or excessive torque. Proper installation techniques and securing methods can minimize mechanical stress and enhance longevity.

Frequency of Maintenance

Regular inspections and maintenance can identify signs of wear or damage early. Cleaning connections and tightening screws can prevent oxidation and improve electrical contact, prolonging the terminal block's life.

Terminal blocks are essential components in electrical systems, providing a reliable means to connect wires and facilitate electrical power distribution. Understanding where and how to use terminal blocks can enhance safety, organization, and efficiency in various applications. In this blog, we’ll explore the primary uses of terminal blocks across different industries.

1. Industrial Automation

In industrial settings, terminal blocks connect control panels to machinery. They simplify wiring by allowing multiple wires to be attached securely and neatly. This is particularly important in environments where machinery needs frequent maintenance or upgrades, as terminal blocks make it easier to isolate sections of wiring without disrupting the entire system.

2. Building Wiring

In residential and commercial buildings, terminal blocks are used in electrical panels to connect circuits to the main power supply. They help in organizing wires, making it easier to identify circuits for maintenance or troubleshooting. Using terminal blocks in building wiring promotes safety, reducing the risk of loose connections that could lead to electrical fires.

3. Automotive Applications

Terminal blocks are often found in automotive wiring harnesses. They serve as junction points for connecting various electrical components, such as sensors, lights, and control modules. Their robust design withstands vibrations and harsh environments, making them ideal for vehicles where reliability is crucial.

4. Telecommunications

In telecommunications, terminal blocks facilitate connections between cables and equipment. They provide a secure and organized way to manage the numerous wires involved in data transmission systems. Terminal blocks help in minimizing signal loss and interference, which is vital for maintaining communication quality.

5. Home Appliances

Many household appliances utilize  terminal blocks for internal wiring connections. They simplify the manufacturing process by providing a standardized method for connecting power and control wires. Terminal blocks in appliances ensure that connections remain secure, even with frequent use.

6. Railway Systems

Terminal blocks are used extensively in railway signaling and control systems. They help connect various electrical devices, ensuring the safe and reliable operation of trains. Their ability to handle high voltages and currents makes them ideal for this demanding application.

Carbon fiber is a new type of high-performance fiber-reinforced material with excellent properties such as high strength, high modulus, high temperature resistance, wear resistance, fatigue resistance, corrosion resistance, creep resistance, conductivity, and thermal conductivity. It can reduce the weight of components, thereby improving their technical performance. Therefore, using carbon fiber as an electric heating element has many excellent properties that cannot be compared to metal, PTC and other electric heating elements:

1. Rapid heating up

Capable of producing the life light required by the human body, far-infrared radiation ranging from 8 μ m to 15 μ m.

2. High efficiency of electric thermal conversion, saving energy

Floor infrared heating wire is a type of all black body material, with an electric heating conversion efficiency that is 30% higher than metal heating, and an electric heating efficiency of about 100%.

3. High tensile strength

Under the same allowable current load area, the strength of carbon fiber is 6-10 times higher than that of metal wire, and it will not break during use, so the tensile strength does not change much during the electric heating process.

4. No arcing due to broken wires

Effectively prevent the occurrence of fires.

5. Lightweight

Effectively reducing the weight of components, thereby improving their technical performance.

6. Stable chemical properties

Corrosion resistant and not easily oxidized. When heated to 3000 degrees Celsius in an anaerobic state, its mechanical properties do not change, and it overcomes the limitations of metal wires in an electric heating state PTC、 The disadvantage of low strength and easy oxidation and burning of silicon carbide heating elements.

7. Long service life

Carbon fiber electric heating wire have the same lifespan as buildings.

characteristic：

1.Using heating cables for heating is a green and environmentally friendly heating method that achieves zero emissions and no pollution.Good heating effect and high heating rate.

2. Good heating effect and high heating rate.

3. Highly controllable, truly achieving household, room, and area control, easy to operate.

4. Abandoning the construction and investment of pipelines, pipe trenches, radiator fins, etc. has saved land and increased the usable area. According to statistics, it can save land and increase the usable area of buildings by about 3-5% each.

5. Comfortable and cozy, not occupying walls, conducive to building decoration and renovation.

6. Long lifespan, low maintenance costs, installation that meets regulatory requirements, and proper operation. The system has the same lifespan as a building and does not require maintenance or repair for many years.

7. Easy installation and low operating costs.

The heating cable heating system is not limited by environmental conditions and can be installed in any place with heating needs. It can be installed on the ground, walls, or ceilings, providing room heating, antifreeze insulation for pipelines, and melting snow and ice on outdoor roads and roofs. Especially for larger spaces such as clubs, exhibition halls, cinemas, sports halls, etc., the heat transfer distance of wall mounted radiators is limited, making it difficult to meet the heating requirements of the entire indoor space. In addition, the indoor heat distribution is uneven, and the ground radiation heating method of heating cables uses the entire ground as a radiator, resulting in uniform indoor temperature distribution. At any position in the room, there will be a warm and comfortable feeling. For large space buildings with glass curtain wall structures, since radiators cannot be installed on the wall, it is more suitable to install heating cable heating systems.

The reason why heating cable heating is called the most ideal heating method in winter is not only because of its economy, safety, convenience, and high quality, but also because it regards people as the main body of life, highlighting the three modern life themes of comfort, health, and environmental protection; Highly humanized design, simple and flexible control methods, bring great convenience to users; The system structure hidden underground maximizes the saving of indoor space.

Comfortable physical sensation：

The heating cable heating system mainly relies on far-infrared radiation for heat transfer (accounting for more than 60% of the total heat transfer), and its radiation principle is the same as that of solar radiation. The ways of heat transfer are divided into three forms: convection, conduction, and radiation. Radiant heat is the most comfortable way of heat transfer for the human body, giving people a warm feeling like sunshine without air flow or dryness. People can set the most suitable indoor temperature according to their own needs, which is not affected by outdoor temperature or seasonal restrictions, and always maintains a warm and spring like feeling indoors.

Having health functions：

Due to the use of the ground as a heat dissipation surface, heat is transferred from bottom to top, giving people a feeling of warmth and coolness. According to medical principles, the most comfortable temperature for human foot sensation is 29 ℃, and the most comfortable temperature for head sensation is 18 ℃. The environmental temperature created by the heating cable heating system is exactly in line with the physiological needs of the human body, which is very beneficial to human health. At the same time, far-infrared radiation has health benefits for the human body, making it the most scientific heating method.

    With the growing emphasis on quality living, the demand for better clothing care solutions has surged. Garment steamers have become an essential household appliance, offering a convenient way to maintain wrinkle-free and hygienic clothing. These devices enable users to quickly smooth out various garments, such as suits and shirts, turning them into perfectly presentable attire in no time. Behind this seamless functionality lies the indispensable contribution of NTC thermistors.

    Garment steamers operate by producing high-temperature steam, typically around 98°C, which softens fabric fibers and eliminates wrinkles through a combination of heat and gentle pressure. The steam not only smooths clothing but also provides effective sterilization. With just a minute of preparation, the steamer generates high-pressure steam to treat clothing wrinkles, requiring no ironing board and simplifying the traditionally tedious ironing process. Suitable for a variety of materials, garment steamers are versatile tools for clothing, curtains, and carpets, saving time and effort while delivering excellent results.

    The temperature control module of a garment steamer integrates a temperature-measuring NTC thermistor, which plays a critical role in ensuring the device operates efficiently and safely. By continuously monitoring the temperature of heating components, the thermistor transmits this data to the control module, which adjusts the connection circuit between the rechargeable battery and the low-voltage DC water pump accordingly. Operating in high-temperature, high-humidity conditions, this thermistor must meet rigorous standards for performance and reliability.

    Nanjing Shiheng Electronic Technology Co., Ltd. has developed NTC thermistors specifically designed for such demanding environments. Through extensive research and innovation, the company has overcome numerous technical challenges, enabling the mass production of reliable, high-performance thermistors. These components deliver the accuracy and durability required for garment steamers to function optimally.

    Our NTC thermistor products are designed for a variety of applications, including surge suppression, temperature compensation, precise temperature measurement, and temperature control. With a commitment to advancing temperature-sensing technology, we ensure that our solutions meet the highest industry standards, offering dependable performance across diverse use cases.