Preparation methods for soluble core mould and nonmetal-lining or no-lining fibre winding container

Abstract

A preparation method of a solube core mold comprises: blank moulding of a mortar mould: a) the ingredients of the mortar die consists of quartz sand, polyvinyl alcohol and water with a weight ratio of 100:1-2:6; b) the inner sleeve of the mortar mould is sleeved in a moulding mould, then adding the uniformly stirred ingredients of the mortar mould into the moulding mould until the moulding mould is full; c) demoulding; and d) solidifying; and a mandrel is penetrated in the mortar mould, the mandrel and the mortar mould are fixed in a circumferential direction by using the inner sleeve of the mortar mould and fixed in an axial direction by using a locking ring. A preparation method of a nonmetal-lining or no-lining fibre winding container comprises: infiltrating a fibre reinforced material in a resin solution, winding the fibre reinforced material on the soluble core mould in a circumferential direction and in a longitudinal direction by using a winder, solidifying, washing with water and demoulding. By using the container, demoulding can be finished by water washing. The soluble core mould is especially suitable for preparing composite material containers with a complex-shape internal profile as well as hard to demould, is low in cost and reusable in raw materials.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a manufacturing method of a soluble mandrel and a manufacturing method of using the mandrel as a winding mandrel to make a non-metallic lining or a fiber-wound container without a lining. Background technique [0002] Filament-wound composite material containers have the advantages of high specific strength and strong designability. The winding law can be designed according to the stress state of the product, and the performance of high specific strength and high specific modulus of fibers can be fully utilized. The core mold is the mold used for fiber winding, and the size and shape of the core mold also determine the inner surface of the winding container. Among them, the metal-lined container, such as a high-pressure gas cylinder, is directly wound on the metal liner. The metal lining is directly used as the mandrel. In this case, the metal lining plays the role of winding ...

AI Technical Summary

Problems solved by technology

[0004] Non-lined or non-metal lined containers often use metal mandrels, wood molds, plaster molds, etc. Metal mandrels are costly and heavy, and are not suitable for making certain inner surfaces with complex shapes, difficult demoulding or openings smaller than Products whose inner diameter cannot be released

Wooden molds and plaster molds are low in cost, although they can make up for these deficiencies, but it is difficult to demould, and the raw materials cannot be reused

Images