How can you improve the gloss of high-quality inflatable laryngeal mask? In the research and development of high quality inflatable laryngeal mask products, it is often mentioned that the surface gloss is high or the surface is bright. So how to improve the gloss of the product surface in the process of formulation design, raw material selection and processing?
Firstly, in the selection of the system, the gloss of the TPR system is generally higher than that of the high quality inflatable laryngeal mask system. If the performance restricts the selection of the system, the selection and ratio of raw materials are used as the starting point.
For raw material SEBS selection, linear, low molecular weight products to improve the glossiness effect is relatively obvious, and it is recommended to use narrow molecular weight distribution of raw materials, do not recommend the use of compound; The paraffin base of plasticized white oil is better than naphthenic, and the low viscosity is better than the high viscosity. Resin PP recommended to choose random copolymerization, PE selection of LDPE, PS HIPS, high mobility not low, avoid the use of high water absorption resin, jellyfish material and other materials.
For the choice of filler can not be added in principle, do not add, if there are other requirements, in the choice of filler recommended to use metal salt or calcium carbonate filler, grain shape to avoid the use of needle, heavy filler, choose a higher number of filler, surface after treatment of products.
In the selection of additives can also use gloss agent to improve the product surface gloss, such as advanced aliphatic hydrocarbons, amide compounds, surfactants, etc., at the same time, the combination of internal and external lubricants can also improve gloss, such as amide, polyethylene wax, paraffin, stearic acid, silicone oil and so on.
Products in the process of processing some means can also improve the product surface gloss, such as control of processing temperature, reduce the surface roughness of molding equipment, product surface layer bright treatment.
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