MANUFACTURE OF STRETCHED AND CURED COMPOSITE

摘要

PURPOSE:To obtain a material which is superior in dimensional stability at the time of heating along with a matter that it is superior in mechanical properties, by a method wherein a shaped material of a resin composite containing two or more kinds of polymers having the polymer having a benzene ring for its indispensable ingredient is quenched after the same has been stretched or rolled within a specific temperature range and further crosslinking treatment is applied to the same along with application of cold stretching to the same. CONSTITUTION:A resin composite containing two or more kinds of polymers having the polymer having a benzene ring for its indispensable ingredient is made into a filmy or fibrous shaped material, to which first stretching is applied, to begin with. The stretching is performed within a temperature range of more than the temperature where a polymer begins to soften and less than that where a flow is generated. Then the stretched material is quenched. The quenching is performed by lowering the temperature suddenly down to the temperature less than the one where softening begins prior to completion of mitigation of stress while the stretched material is held as it is. A filmy or fibrous stretched and cured composite is obtained after that by applying crosslinking treatment to the stretched material while secondary stretching is being performed. Dimensional stability at the time of heating of the stretched and cured composite obtained through this crosslinking treatment is improved.