The role of thin films in everyday life and technology
FAQ 2025-09-01 99
Thin films are layers of material ranging in thickness from a few nanometers to several microns, and are widely used in everyday objects and advanced technologies. Examples of thin films include soap bubbles, the metal coating on the back of household mirrors, and various technological applications such as magnetic recording media, electronic devices, semiconductors, light-emitting diodes, optical coatings, and thin-film drug delivery systems. Th
Common fluororubber production problems and solutions
FAQ 2025-06-30 136
Common fluororubber production problems mainly include: Roller sticking during mixing, white particles in the mixed rubber, rough surface of semi-finished products, easy tearing and shrinkage of products, serious mold pollution, traces on joints, lack of rubber, cracks on the surface, slow vulcanization speed, product deformation, unstable size, etc. Main problems and solutions 1. Easy to stick to the roller during mixing The main manifestation
What is a self-lubricating rubber seal?
FAQ 2025-06-30 151
A self-lubricating rubber seal is made by adding lubricating oil to the rubber material. After the rubber product is vulcanized and formed, the surface of the rubber seal is smooth and lubricated, which can reduce friction. Polytetrafluoroethylene (PTFE) has excellent properties such as chemical stability, high and low temperature resistance, low friction coefficient, and self-lubricating properties, so it has been widely used in all walks of li
What is fluororubber?
FAQ 2025-06-30 143
Fluororubber (FKM) is a type of synthetic rubber containing gas. It is widely used in aerospace, automotive and chemical industries due to its heat resistance, chemical resistance and weather resistance. The following is a detailed introduction to fluororubber. Characteristics of fluororubber 1. High temperature resistance: fluororubber can be used for a long time at 200°C or even higher temperatures, and some specially formulated fluororubbers
Plasticizing method and influencing factors
FAQ 2025-06-30 156
Preparation process 1. Rubber baking NR rubber baking temperature is generally 50~60℃, time is 24~36h, winter heating time is 36~72h. CR rubber baking temperature is generally 24~40℃, time is 4~6h. The rubber baking temperature should not be too high, otherwise it will affect the physical and mechanical properties of rubber. 2. Rubber cutting Use a rubber cutting machine to cut the raw rubber into small pieces. The weight of each piece varies dep
Plasticity determination method
FAQ 2025-06-30 180
There are usually three methods for determining the plasticity of raw rubber and mixed rubber: compression method, rotational torque method and extrusion method. They all need to be carried out at a constant temperature because plasticity changes with temperature. Compression method This type of determination method is commonly used in three methods: Williams method, Wallace rapid plasticity method and Dever plasticity method. 1. Williams method
Summary of the advantages and disadvantages of various rubbers
FAQ 2025-06-30 144
Fluororubber (FKM) Advantages: Fluororubber (FKM) is a special elastomer that is resistant to extreme heat, oil, gasoline, hydraulic oil and hydrocarbon solvents. It has good resistance to oxygen, ozone, sunlight, and good impermeability to gases and steam. Disadvantages: Fluororubber is generally not resistant to oxygen-containing solvents and has poor tear resistance. It is also not resistant to low temperatures, generally only to around -25 d
Common fluororubber production problems and solutions
FAQ 2025-06-26 136
Common fluororubber production problems mainly include: Roller sticking during mixing, white particles in the mixed rubber, rough surface of semi-finished products, easy tearing and shrinkage of products, serious mold pollution, traces on joints, lack of rubber, cracks on the surface, slow vulcanization speed, product deformation, unstable size, etc. Main problems and solutions 1. Easy to stick to the roller during mixing The main manifestation
What is the reason for residue after pickling and phosphating?
FAQ 2025-06-26 163
Today, a customer gave feedback: Acidic rust remover reacts with rust-proof oil. Is there a better rust remover alternative? Background: The factory manufactures fuel tanks and hydraulic oil tanks for construction machinery such as excavators; Process: phosphoric acid pickling + phosphating Problem: After phosphating, a mixed rust remover of phosphoric acid + vegetable acid is used for rust removal, and rust-proof oil is applied after rust remova
What is the relationship between oil defoamers and surfactants?
FAQ 2025-06-26 145
Is defoamer a surfactant? Hey, this question is very technical. In fact, many workers who use defoamers for the first time will think about this question. Since defoamers are processing aids, are they surfactants? In fact, surfactants have many functions, and different HLB values have different functions. When the HLB value of a surfactant reaches 1-3. it has a defoaming function, regardless of being limited to a certain field rather than all
Functions and classification of inorganic dispersants and organic dispersants
FAQ 2025-06-26 154
Dispersants can be divided into inorganic dispersants and organic dispersants. Among them, inorganic dispersants are ionic dispersants, while organic dispersants are surfactants. For ionic dispersants, dispersants can ionize positive ions and negative ions after dissolving in water. These ions are adsorbed on the surface of colloidal particles with opposite charges, and then a double electric layer is formed on the surface of the ions, resulting
Comparison between metalworking fluid and cutting fluid
FAQ 2025-06-24 138
In modern industrial production, metalworking fluid and cutting fluid are two indispensable auxiliary fluids, which play an important role in improving metalworking efficiency, protecting equipment and improving product quality. Although they have similarities in some aspects, there are obvious differences in function, composition and application range. Versatility of metalworking fluid Metalworking fluid is a broad concept, which includes vario
