All-directional conductive polyurethane foam and preparation method thereof

Abstract

The invention discloses all-directional conductive polyurethane foam and a preparation method thereof. The method comprises the following specific steps that S1, foam is prepared, wherein a foamed sponge taking polyurethane as the main component is cut into sheets; S2, conductive cloth is prepared, wherein polyurethane fiber plaid cloth is put into a vacuum chamber, and the plaid cloth is subjected to copper plating through multi-arc ion plating to form a conductive cloth; S3, the foam is cleaned; and S4, glue spraying and cloth pasting are carried out on the foam, wherein the cut foam is subjected to liquid glue spraying and conductive cloth pasting through a glue spraying and cloth pasting device. The polyurethane foam has the advantages of high conductivity, high softness, large extrusion degree, good shielding effect and the like, and has extremely high cost performance; and a cloth winding mechanism of the glue spraying and cloth pasting device can be disassembled, the replaceableproperty of the conductive cloth is ensured, and the all-directional conductive polyurethane foam with different sizes can be produced in large batches. The device has the advantages of being convenient to operate, firm in conductive cloth pasting, time-saving, labor-saving and the like.

Description

technical field [0001] The invention belongs to the field of conductive foam, and in particular relates to an all-round conductive polyurethane foam and a preparation method thereof. Background technique [0002] Conductive foam is a three-dimensional network structure functional material that integrates conduction and electromagnetic shielding functions. It is widely used in conduction due to its long period of conduction validity, good electric cool shielding effect, and surface resistance value can be set according to actual use. material field. At present, conductive sponges produced by electroless vacuum plating, ion sputtering, vapor deposition, and conductive adhesive coating methods also have poor coating penetration, uneven coating, unstable surface resistance, poor fire and moisture resistance, and brittleness. Easy to drop powder, poor resilience, short service life and other defects, it is difficult to meet the quality requirements of modern electronic products....

AI Technical Summary

Problems solved by technology

When producing conductive foam, it is necessary to spray glue and paste the foam. The existing glue spraying device has low applicability and reduces the production speed of conductive foam. In today's rapid development of electronic technology, a Good conductivity, the coating is not easy to fall off, and can meet the requirements of ultra-thin electromagnetic shielding materials has become an inevitable demand for the development of conductive sponges

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