Environment-friendly high-flame-retardant sheath material for PVC optical cable

Abstract

The invention discloses an environment-friendly high-flame-retardant sheath material for a PVC optical cable. The environment-friendly high-flame-retardant sheath material comprises the following components in percentage by weight: 48%-52% of PVC, 20%-24% of a first plasticizer, 7%-12% of a second plasticizer, 5%-9% of a flame retardant, 5%-8% of a stabilizer, 3%-5% of an anti-shrinking agent and 0.5%-1% of an antioxidant. Through combination of polyvinyl chloride, the first plasticizer, the second plasticizer, the flame retardant, the stabilizer, the anti-shrinking agent and the antioxidant, the flame retardant property of the environment-friendly high-flame-retardant sheath material for the PVC optical cable can be effectively improved, the cold resistance is improved, and the sheath material is low in thermal shrinkage rate, suitable for different environments, high in adaptability and wide in application range.

Description

technical field [0001] The invention belongs to the technical field of optical cable sheaths, in particular to an environmentally friendly and highly flame-retardant sheath material for PVC optical cables. Background technique [0002] With the rapid development of optical communication, the demand for optical cables is increasing day by day; daily life (mobile phones, computers, televisions, networks, etc.) is inseparable from optical communication; optical communication relies on optical cables to transmit information, and the core material of optical cables is optical fibers. The protector of the optical fiber is the fiber filling paste; the optical fiber will produce stress corrosion under the action of moisture, moisture and stress, and hydrogen loss will occur in a hydrogen-containing environment; once the optical fiber is subjected to stress, high temperature, corrosion and hydrogen loss, it will be greatly damaged. Reduce the transmission performance of optical cable...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of optical communication, the demand for optical cables is increasing day by day; daily life (mobile phones, computers, televisions, networks, etc.) is inseparable from optical communication; optical communication relies on optical cables to transmit information, and the core material of optical cables is optical fibers. The protector of the optical fiber is the fiber filling paste; the optical fiber will produce stress corrosion under the action of moisture, moisture and stress, and hydrogen loss will occur in a hydrogen-containing environment; once the optical fiber is subjected to stress, high temperature, corrosion and hydrogen loss, it will be greatly damaged. Reduce the transmission performance of optical cable information; therefore, a kind of optical cable sheath that can be flame-retardant, cold-resistant, and heat-shrinkable is required to protect the optical fiber