What Additives Are Needed In The Production Process Of Pre-insulated Sleeves?

pre insulated sleeve has high electrical insulation, temperature resistance, corrosion resistance, aging resistance and heat dissipation. Because of its excellent softness and elasticity, it can maintain its softness and bend resistance in a low temperature environment of minus 50℃, and will not reduce its electrical insulation performance. Therefore, it is widely used in electrical appliances, motors, smelting, special equipment and other fields. pre insulated junction sleeve has so many advantages, so what additive products does insulated joint sleeve need in the production process? Below, the editor will give you a detailed introduction to the additives in the production of glass fiber tubes.

1. Coupling agent; The function of the coupling agent is to combine the glass fiber with the impregnation agent. The coupling agent is insoluble in water under normal conditions. It is a chemical solution of an oily substance that can be soluble in water under certain conditions. There are many types of coupling agents with different chemical properties. In the production process, coupling agents with different properties are selected according to the performance of the glass fiber and the variety of production to meet the performance requirements of different products. Some coupling agents can be directly hydrolyzed, such as the commonly used KH550 coupling agent. Some coupling agents require specific acidic conditions to hydrolyze, such as KH570 coupling agent. Whether the coupling agent is completely hydrolyzed has a direct impact on the quality of glass fiber.
2. Lubricant; The lubricants in the glass fiber tube impregnation agent include ethers, alcohol copolymers, cationic amine salts, oleic acid esters, etc. Lubricants are added to avoid the generation of wool yarns in the production and use of glass fiber. If lubricants are not added, the wool yarns generated during the winding process will have a certain impact on the product quality, and the glass fiber tube will also have a blockage in the yarn guide ring or affect the dispersion of the yarn when it is used. The amount of lubricant used must strictly follow the product instructions. Excessive or insufficient use has a great impact on the glass fiber production and processing process and the winding process. For example, excessive use of lubricants will cause the silk cake to be unhooked and the yarn to be messy during the winding process.
3. Film-forming agent; The glass fiber tube film-forming agent is a raw material that is applied to the surface of the glass fiber tube in large quantities and can form a film at a certain temperature. Film formers are also called binders or bundling agents. Film formers are added to ensure that the glass fiber strands are bundled and the strands are intact. They can determine the hardness of the glass fiber strands and the performance of the glass fiber tubes. Common types of film formers include polyesters, epoxies, polyurethanes, acrylates, PVAC copolymers, etc. In the glass fiber production process, the film former uses its own adhesive force to adhere to the surface of the glass fiber, and uses its chemical properties to change the performance of the glass fiber tube, so as to meet the use requirements of the glass fiber tube. Different film formers are required for glass fiber tubes for different purposes, such as: jet yarn, SMC yarn, BMC yarn, chopped mat yarn, direct yarn, pultruded yarn, textile yarn, friction material yarn, engineering plastic yarn, etc. When using a film former, first check whether its appearance color is normal, whether there are stains, and stir it evenly before use.
4. Wetting agent; The impregnation agent for glass fiber tubes should avoid mixing new and old batches of raw materials to ensure the purity of the impregnation agent. The impregnation agent emulsion must be stirred continuously during use to avoid precipitation. Before using the prepared impregnation agent emulsion, the stratification or failure of the impregnation agent emulsion should be avoided to prevent the instability of the solid concentration. The preparation of the impregnation agent should strictly follow the principle of small amounts and multiple times. The prepared impregnation agent emulsion should be used up within one working day, and the longest time should not exceed 24 hours. Some raw materials in the impregnation agent are flammable and explosive materials. It is strictly forbidden to contact with fire during use; and the impregnation agent has a certain corrosive and pungent smell. Before preparation, you should wear dust-free clothes, gas masks and fully enclosed glasses before preparing!
The above are the four major additive products in the production process of glass fiber tubes. Additives are indispensable auxiliary materials in the production process of glass fiber tubes. A full understanding of the use and performance of the four major additives has a decisive impact on the quality and performance of glass fiber tubes!