PVC sheathing material for anti-ant cables and preparation method thereof

Abstract

The invention provides a PVC sheath material for anti-termite cables. The PVC sheath material is composed of the following components by weight: 100 parts of PVC, 6-10 parts of a Chinese prickly ash composite anti-termite agent, 5-25 parts of a filler, 0.1-0.5 part of a coupling agent, 0.5-2 parts of a lubricant, 4-8 parts of a stabilizer, 1-2 parts of ACR, 6-9 parts of a flame retardant, and 15-30 parts of a plasticizer. The preparation steps of the Chinese prickly ash composite anti-termite agent include: A. cleaning and airing Chinese prickly ash fruits, conducting grinding and sieving to obtain Chinese prickly ash fruit powder, performing wrapping with filter paper, then adding the product into a Soxhlet extractor, adding chloroform and carrying out reflux extraction, and subjecting the extracted solution to vacuum concentration so as to obtain a Chinese prickly ash extract; B. adding lauric acid into a chloroform solution, stirring the mixture evenly, then adding the Chinese prickly ash extract, further performing stirring, then adding nano-alumina powder, carrying out mechanical stirring, discharging and filtering, washing the filter cake, then conducting drying, grinding and sieving. The invention also provides a preparation method of the sheath material. The PVC sheath material for anti-termite cables provided by the invention has good anti-termite properties, and can effectively avoid decaying damage of termites.

Description

[0001] Technical field: [0002] The invention relates to a PVC sheathing material, in particular to a PVC sheathing material for ant-proof cables and a preparation method thereof. [0003] Background technique: [0004] At present, the sheath material of cables is generally based on polyolefin, among which PVC occupies a relatively large proportion due to its relatively balanced performance in various aspects and low cost. In the laying place of wires and cables, the sheathing material is often damaged by termites in the natural environment. The bitten PVC sheathing material will have holes, which are easy to be damp or soaked in water, resulting in leakage and short circuit, causing power outages, communication interruptions and even Serious accidents such as fire and explosion. At present, there are two main anti-ant methods for cable sheathing materials. One is to add repellents with anti-ant effects. However, most repellents are also harmful to humans and pollute the envi...

AI Technical Summary

Problems solved by technology

In the laying place of wires and cables, the sheathing material is often damaged by termites in the natural environment. The bitten PVC sheathing material will have holes, which are easy to be damp or soaked in water, resulting in leakage and short circuit, causing power outages, communication interruptions and even Serious accidents such as fire and explosion

At present, there are two main anti-ant methods for cable sheathing materials. One is to add repellents with anti-ant effects. However, most repellents are also harmful to humans and pollute the environment. The hardness and wear resistance of the cover material are used to achieve the anti-termite effect. For example, nylon or imitation nylon with higher hardness is used instead of PVC, but the cost is correspondingly higher, and the anti-ant effect is not very good, and termites will still cause a certain degree of damage

[0005] The publication number is CN101492554B, the publication date is 2011.04.27, and the applicant is the Chinese patent application of Tongji University, which discloses "an environmentally friendly anti-termite and rodent-proof cable sheath material and its preparation method". The sheath material is composed of polyethylene, reinforcing agent , colorant, antioxidant, rheology modifier and lubricant; the mass parts of each component are as follows: polyethylene 94-97 parts, reinforcing agent 2-4 parts, rheology modifier 0.03-0.06 parts , 2-3 parts of colorant, 0.4-1 part of antioxidant, 0.01-0.03 part of lubricant, the invention improves the hardness and Wear resistance, so as to achieve the effect of insect and rodent protection, but it has certain defects: the anti-ant effect is not good, and it cannot effectively avoid the damage of termites to the sheath material

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