1. Overview of Equipment and Application Fields

The PF400-H Intelligent Constant Temperature Coating System is a cutting-edge solution specifically designed for high-end material R&D and precision coating testing. Building upon standard coating machines, this equipment integrates advanced heating control systems and enhanced vacuum adsorption modules, making it ideal for temperature-sensitive processes or complex applications requiring thermal-assisted film formation. The PF400-H seamlessly combines two mainstream coating technologies: precision squeegee coating and wire rod (Meyer rod) coating, capable of processing a wide range of materials from low-viscosity solvent-based coatings to high-solid-content, high-viscosity pastes (e.g., lithium battery electrode pastes, ceramic precursors, conductive inks). Its core advantage lies in providing stable heat sources across a broad temperature range from room temperature to 200°C, combined with a powerful vacuum adsorption platform that ensures absolute flatness and uniform temperature distribution during coating, significantly enhancing film crystallinity, adhesion, and thickness consistency. Equipped with a digital intelligent control system, the PF400-H enables precise setting and real-time monitoring of coating speed (0.1-50mm/s), heating temperature, and operational stroke. This equipment serves as an ideal solution for material screening, process development, and small-batch prototyping in fields such as new energy batteries (lithium batteries, solid-state batteries), next-generation photovoltaics (perovskite, organic PV), printed electronics, functional ceramics, biomedical engineering, and optical coatings. It is widely used in key university laboratories, corporate R&D centers, and third-party testing institutions.

2. Core Functional Highlights

· Dual-mode precision coating, flexibly addressing diverse requirements

o Micron-scale blade coating: Featuring a high-rigidity fine-tuning blade mechanism that enables micron-level gap precision adjustment. Users can precisely control the blade-to-substrate distance according to target dry/wet film thickness. Ideal for thick film preparation of high-viscosity, high-solid-content slurries, ensuring uniform coating edges and thickness. The blade material is available in stainless steel or wear-resistant polymer, resistant to corrosion from various organic/inorganic solvents.

o Standardized rod coating: Compatible with the internationally recognized Mayer Bar interface, this method enables rapid experimental validation of varying coating quantities by replacing rods with different wire diameters. Rod coating is characterized by its simplicity and excellent reproducibility, making it particularly suitable for rapid formulation screening and comparative studies of low-viscosity coatings.

o Modular quick-change design: The scraper assembly and wire rod holder feature a quick-release mechanism, enabling mode switching within minutes without specialized tools, significantly enhancing laboratory efficiency.

· Intelligent Constant Temperature Heating and Excellent Thermal Management

o Wide-range precise temperature control: The working platform is equipped with high-quality heating elements and high-sensitivity temperature sensors, covering a temperature range from room temperature to 200°C. Utilizing PID intelligent algorithms, the temperature control accuracy reaches **±1°C**, effectively simulating preheating in oven or online drying processes in production environments.

o Superior thermal uniformity: The heating panel undergoes specialized heat-diffusion treatment, achieving minimal surface temperature variation (±2% at 100℃). This effectively prevents coating defects like uneven drying, orange peel effects, cracks, or crystallization caused by localized overheating or underheating. The technology is particularly advantageous for film formation on temperature-sensitive materials such as perovskite.

o Temperature rise rate controllable: Users can set up heating programs to meet the specific requirements of different materials for temperature rise curves, optimizing the solvent evaporation kinetics process.

· Strong vacuum adsorption and substrate fixation

o Full-coverage vacuum adsorption: The platform surface is equipped with a high-density micropore array connected to a high-power silent vacuum pump, generating strong and uniform adsorption force. Whether it is ultra-thin flexible films (e.g., PET, PI, copper foil, aluminum foil) that are prone to curling or smooth rigid substrates (e.g., glass, silicon wafers, metal plates), they can be firmly "frozen" on the platform surface.

o Eliminating coating defects: To achieve ultra-uniform nanometer-to-micrometer films, it is crucial to completely resolve common issues in traditional coating processes, such as substrate wrinkling, displacement, bubbles, and edge warping, while maintaining a constant distance between the coating head and the substrate.

o Large-format compatibility: The vacuum adsorption zone is optimally designed to perfectly accommodate substrates of A4 size and larger, meeting the requirements for large-area film production.

· High Precision Drive and Stable Operation

o Wide-range stepless speed control: Equipped with a high-performance servo drive system, the coating speed can be continuously adjusted within the range of 0.1 mm/s to 50 mm/s. Low-speed operation is smooth without crawling, suitable for slow leveling of high-viscosity materials; high-speed operation features rapid acceleration and precise positioning, ideal for fast-drying systems.

o Constant-speed control: The system features an integrated closed-loop speed feedback mechanism that dynamically adjusts motor speed, maintaining a consistent speed fluctuation of **±1%** to ensure exceptional film thickness repeatability.

o Precision guide rail drive: The coating head moves along a high-precision, high-rigidity guide rail, effectively eliminating lateral wobble and vertical jump, ensuring uniformity of the coating's lateral thickness.

· Humanized operation and safety protection

o Intuitive digital control: Featuring a high-definition digital display and user-friendly panel, it provides real-time visibility of key parameters including speed, temperature, and stroke, with multi-parameter storage and retrieval capabilities.

o Programmable travel: Users can freely set the start and end points of coating to avoid wasting precious samples with invalid travel. Equipped with soft and hard limit protection to prevent mechanical collisions.

o Corrosion-resistant and easy to clean: The main body and contact components of the equipment are made of acid-and alkali-resistant, organic solvent-resistant materials (such as anodized aluminum, 304/316 stainless steel, and Teflon-coated materials). The smooth surface is easy to clean and suitable for harsh chemical environments.

o Safety emergency stop mechanism: Equipped with a prominent emergency stop button, it automatically cuts off power and heating in abnormal situations to ensure the safety of personnel and equipment.

3. Technical Parameters and Specifications

4. Typical Application Scenarios

· Research and development of lithium-ion batteries: For the constant-temperature coating of high-solid-content positive and negative electrode slurries on copper/aluminum foils, investigating the effects of temperature on slurry rheology, solvent evaporation rate, and electrode microstructure, to optimize battery energy density and cycle life.

· Perovskite solar cells: Crystallization control of precursor solution on heated substrate, utilizing an isothermal platform to induce high-quality perovskite crystal growth, reducing pinhole defects, and enhancing photoelectric conversion efficiency.

· Printed electronics and flexible circuits: Conductive silver paste and carbon nanotube ink are coated on flexible substrates for low-temperature or high-temperature curing, and the conductive performance and adhesion at different temperatures are tested.

· Functional ceramics and solid electrolyte: The preliminary experiments of casting zirconia and sulfide solid electrolyte slurry by heating to reduce viscosity and prepare ultra-thin dense ceramic membrane.

· Biomedical coatings: thermally controlled deposition of biocompatible polymers and drug carriers on the surface of implantable devices to regulate drug release rates and coating degradation behavior.

· Optical thin films and adhesives: coating tests of thermosensitive optical adhesives and antireflection film materials to evaluate the effects of temperature on refractive index, transmittance, and curing rate.

· Teaching and research in universities: In the experiments of materials science and chemical engineering, the influence of temperature field on coating film formation mechanism is demonstrated, and multivariable process exploration is carried out.

5. Why choose the PF400-H heating-controlled coating machine?

The PF400-H Temperature-Controlled Coating Machine is a versatile expert in laboratory film preparation. It not only inherits the high precision and flexibility of standard models but also solves the film-forming challenges of thermosensitive materials and high-viscosity slurries through its intelligent constant temperature system. With ±1℃ precision temperature control and **±2% thermal uniformity**, it provides critical process stability for cutting-edge materials like perovskite and lithium battery slurries. Powerful vacuum adsorption completely eliminates errors caused by substrate deformation, ensuring reliable experimental data. Its wide-speed adjustment range of 0.1-50mm/s and dual-mode coating design enable it to handle complex processes ranging from dilute solutions to thick slurries, and from low-speed leveling to high-speed drying. The robust corrosion-resistant structure and user-friendly interface make scientific research more efficient and convenient. Whether for basic material screening, key process parameter optimization, or small-batch high-quality sample production, the PF400-H delivers consistent, precise, and efficient solutions. Choosing the PF400-H means choosing professionalism, trust, and innovation acceleration – helping you break through bottlenecks in film technology and lead the future.