ガラス繊維強化ポリエチレンの溶接性に関する研究(第 3 報) : 熱板溶接について

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In the previous report, an experimental study of the molding property and ultrasonic weldability of fiber glass reniforced polyethylene was described. The present report explains the weldability of fiber glass reinforced polyethylene by heat-tool welding. That is to say, as a new method of molding of fiber glass erinforced polyethylene (FRPE), we have made an impregnation sheet by combining glass fiber base material in the form of mat and resin made into a film beforehand. We wish to present here the properties and weldability of such impregnation sheet obtained through a series of experiments. Fiber glass reinforced polyethylene has been made by impregnation sheet method with hot press, and possibility of welding by heating plate has been explored. In an experiment like this, it is essential that the glass fiber base material be satisfactorily impregnated with resin and that the adhesion between these two be strong. The impregnation sheet we have used in the experiments was 30% in the ratio of glass fiber content, registered approximately 5 times what of the tensile strength of the resin base mateial and showed comparatively good condition of impregnation in microscopic examination. Now, in welding of fiber glass reinforced polyethylene, it is necessary that the glass fiber diffuses mutually on both sides of welding part, and that the resin is deposited sufficiently and induces fully the glass fiber which has diffused mutaually. It is interesting to note that fiber glass reinforced polyethylene has excellent physical properties and economic advantage of polyethylene, plus strength and heat resisting properties. However, the adhesive properties which are dependent upon polarity peculiar to polyethylene are controversial and this is why the industrialization of polyethylene has somewhat fallen behind. In this report, we have treated adhesive properties of a fiber glass reinforced polyethylene sheet itself, or, in other words, the weldability including a combination of glass fiber base material and resin. From this report, you may find that a composite material of polyethylene of higher strength can be obtained by the impregnation sheet method in which a glass fiber base material of mat form is combined with resin, and that the result of welding can be as excellent as the composite material itself.
社団法人溶接学会の論文
1973-03-25

ガラス繊維強化ポリエチレンの溶接性に関する研究(第 3 報) : 熱板溶接について

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