What are the characteristics of PTFE anti adhesive coating sprayed on the material bucket

Source：www.dqig.cn Release date： 2025年12月01日

Information summary：The material bucket (including mixing bucket, storage bucket, conveying bucket, etc.) is sprayed with PTFE (polytetrafluoroethylene, commonly known as "Teflon") anti adhesive coating. The core is to endow the inner wall of the material bucket with the core characteristics of "lower surface energy+strong stability" through the special molecular structure and spraying process of PTFE material, solvi

The material bucket (including mixing bucket, storage bucket, conveying bucket, etc.) is sprayed with PTFE (polytetrafluoroethylene, commonly known as "Teflon") anti adhesive coating. The core is to endow the inner wall of the material bucket with the core characteristics of "lower surface energy+strong stability" through the special molecular structure and spraying process of PTFE material, solving the pain points of material adhesion, corrosion, and cleaning difficulties in industrial production, and adapting to various types of material processing scenarios such as powder, slurry, and viscous materials. Its core features revolve around the four dimensions of "anti sticking, durability, adaptability, and environmental protection", and are analyzed in detail in combination with industrial application requirements:
1、 Anti adhesion: fundamentally solving the problem of material adhesion
The core advantage of PTFE coating is its low surface energy (only 18-20mN/m), which almost does not physically adsorb any solid materials, achieving "material non stick to the wall and residue approaching zero":
For viscous materials such as coatings, adhesives, food sauces, chemical slurries, etc., the coating surface is as smooth as a mirror (roughness Ra ≤ 0.2 μ m), and the material is not easily adhered to the inner wall during mixing and transportation in the bucket. After unloading, there is no obvious residue on the bucket wall, and the unloading efficiency is increased by more than 30%, avoiding material waste (especially high-value materials such as pharmaceutical intermediates and special coatings);
For powder/granular materials such as plastic particles, food powders, chemical powders, etc., it can prevent the materials from clumping and adhering to the barrel wall due to factors such as humidity and pressure, ensure uniform material discharge and correct measurement, and avoid uneven mixing and production process fluctuations caused by wall adhesion;
For easily curable materials such as epoxy resin, hot melt adhesive, curing agent, etc., it can prevent materials from solidifying and clumping on the barrel wall, reduce equipment downtime caused by cleaning cured materials, and avoid the mixing of cured materials into subsequent batches of materials that may affect product quality.
2、 Corrosion resistance: chemical stability suitable for complex working conditions
PTFE material has "chemical inertness", and the coating formed after spraying can resist the corrosion of the vast majority of chemical media, suitable for complex environments such as acid and alkali, solvents, etc. in industrial production:
Acid and alkali corrosion resistance: can withstand strong acids (such as sulfuric acid, hydrochloric acid, nitric acid), strong bases (such as sodium hydroxide, potassium hydroxide), salt solutions and other media, suitable for the storage and treatment of corrosive materials in chemical, electroplating, pharmaceutical and other industries, to prevent the inner wall of the material bucket from being corroded, rusted (such as metal material buckets) or swollen and aged (such as ordinary plastic material buckets);
Solvent corrosion resistance: can withstand organic solvents (such as acetone, ethanol, toluene, gasoline), oils, lubricants, etc., suitable for storage and stirring of materials such as coatings, inks, chemical solvents, etc. The coating does not dissolve or peel off, ensuring the purity of the material is not contaminated;
Wide temperature range adaptation: It can maintain stable performance within the temperature range of -200 ℃~260 ℃, suitable for both low-temperature frozen materials (such as chemical raw materials cooled by liquid nitrogen) and high-temperature materials (such as hot melt plastics and high-temperature reaction slurries), without causing coating cracking or failure due to temperature changes.
3、 Excellent durability: balancing mechanical strength and long-term stability
Industrial material drums need to withstand high-frequency operations such as mixing, transportation, and cleaning. PTFE coating has excellent mechanical properties and service life through optimized spraying processes (such as sandblasting pretreatment, multi-layer spraying, and high-temperature curing):
Wear resistant and impact resistant: The coating has a high bonding strength (adhesion ≥ 5MPa) with the material bucket substrate (metal, plastic, etc.), and can withstand high-speed scratching of the mixing blade and impact collision of materials. It is not easy to peel off or peel off after long-term use (2-5 years under normal working conditions); For high wear scenarios (such as mixing high hardness granular materials), ceramic particle reinforced PTFE coating can be used to further improve wear resistance;
Scratch resistant and easy to clean: The surface hardness of the coating can reach HRC 50 or above, which can withstand the cleaning of conventional cleaning tools such as high-pressure water guns and soft brushes, and is not easy to scratch; When cleaning, only simple rinsing or wiping is needed to remove residual materials, without the need for strong corrosive cleaning agents, reducing cleaning costs and equipment wear and tear;
Long term stability: The coating does not age or decompose, and can maintain stable performance in outdoor exposure and humid environments. It will not turn yellow or crack due to oxidation or ultraviolet radiation, and is suitable for long-term outdoor storage of material barrels or continuous operation of production equipment.
4、 Wide adaptability: compatible with multi material barrels and multi scenario applications
The spraying process of PTFE coating is mature and can adapt to the diverse needs of different material barrels and industrial production
Material compatibility of material buckets: can be sprayed on the surfaces of various substrates such as metal buckets (stainless steel, carbon steel, aluminum alloy), plastic buckets (PP, PE, ABS), glass fiber buckets, etc. Through substrate pretreatment (sandblasting, degreasing, activation), the coating and substrate are tightly bonded, not limited to specific types of buckets;
Material type adaptation: From food grade materials (such as chocolate syrup and baking powder) to industrial grade materials (such as chemical intermediates and building coatings), from viscous materials to corrosive materials, from low-temperature materials to high-temperature materials, PTFE coating can meet the requirements of anti sticking and anti-corrosion; Some food grade PTFE coatings comply with FDA, GB 4806 and other standards, and can directly contact food and pharmaceutical raw materials;
Equipment scene adaptation: Suitable for various material processing equipment such as mixing drums, storage drums, reaction vessels, conveying hoppers, and silos. Whether it is intermittent production (such as small batch sauce mixing) or continuous production (such as chemical slurry conveying), it can play the advantages of anti sticking, anti-corrosion, and easy cleaning, improving production efficiency and product quality.
5、 Environmental protection and safety: meet the needs of industrial green production
The PTFE coating itself is non-toxic, odorless, and does not release harmful substances during use, making it suitable for environmentally friendly production requirements:
Food safety assurance: Food grade PTFE coating does not contain harmful substances such as heavy metals and plasticizers, meets the safety standards for food contact materials, and can be used for material processing in industries such as food, beverage, and medicine to ensure product safety;
Reduce pollution emissions: Due to the anti sticking properties of the coating, there is less material residue, and there is no need to frequently use highly corrosive cleaning agents for cleaning, reducing the discharge of wastewater and waste liquid; At the same time, the coating is stable for a long time and not easy to peel off, avoiding product pollution and environmental emissions caused by coating fragments mixed with materials;
Energy saving and consumption reducing: Smooth material unloading can reduce energy consumption during mixing and unloading processes (such as reducing the load on the mixing motor); Extended cleaning cycle reduces equipment downtime for cleaning, indirectly improves production efficiency, and lowers overall energy consumption.

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