Black 90-DEG C thermal-plasticity low-smoke zero-halogen flame-retardant polyolefin rat-proof sheathing compound and preparation method thereof

Abstract

The invention discloses a black 90-DEG C thermal-plasticity low-smoke zero-halogen flame-retardant polyolefin rat-proof sheathing compound. The thermal-plasticity low-smoke zero-halogen flame-retardant polyolefin rat-proof sheathing compound comprises the following components in parts by weight: 70-80 parts of black regenerated low-smoke zero-halogen granular materials, 0-10 parts of EVA (ethylene vinyl acetate copolymer), 0-15 parts of aluminum hydroxide, 0-5 parts of magnesium hydroxide, 0-6 parts of lubricants, 0-0.5 parts of coupling reagents, 0-3 parts of compatilizers, 0-0.4 parts of antioxidants, 2-3 parts of rat-proof master batches and 0.5-1.5 parts of color master batches, wherein the black regenerated low-smoke zero-halogen granular materials are recycled waste low-smoke zero-halogen plastic particles, in the content, the weight of the EVA is not less than 25%, the weight of the aluminum hydroxide or the magnesium hydroxide is not less than 50%. According to the regenerated thermal-plasticity low-smoke zero-halogen flame-retardant polyolefin rat-proof sheathing compound which is detected, the mechanical property and the anti-ultraviolet-ray property both surpass the national standard and conform to the using requirements of enterprises completely. The detection indexes are as follows: the tensile strength is more than or equal to 9.0MPa, the elongation at break is more than or equal to 150.0%, the low-temperature embrittlement impact temperature is below 30 degrees, the oxygen index is more than or equal to 32, after the aging is performed to the sheathing compound at 158 DEG C plus or minus 2 DEG C for 168h, the change ratio of the tensile strength of the sheathing compound is less than or equal to plus or minus 25, the change ratio of the elongation at break of the sheathing compound is less than or equal to 25, and the protection ratio of the sheathing compound is 100%.

Description

technical field [0001] The invention belongs to the technical field of recycling waste cable sheaths, and in particular relates to a black 90°C thermoplastic low-smoke halogen-free flame-retardant polyolefin rodent-proof sheath material and a preparation method thereof. Background technique [0002] At present, mice are one of the three major hazards that endanger plastic cables and optical cables, causing many accidents every year and causing huge economic losses. Therefore, it is necessary to carry out research on low-smoke, halogen-free, flame-retardant and regenerative rodent-proof sheathing materials. The existing rodent-proof sheath materials are all prepared from fresh materials, and cannot fully meet the requirements of non-toxic, harmless and environmentally friendly. In the existing cables, as the service life increases, more and more cables are replaced and eliminated, forming a lot of waste cable sheaths, which causes waste of resources and environmental pollutio...

AI Technical Summary

Problems solved by technology

[0002] At present, rats are one of the three major hazards that endanger plastic cables and optical cables. They cause many accidents every year and cause huge economic losses. Therefore, it is necessary to carry out research on low-smoke, halogen-free, flame-retardant and regenerative rodent-proof sheathing materials.

The existing rodent-proof sheath materials are all prepared from fresh materials, and cannot fully meet the requirements of non-toxic, harmless and environmentally friendly

In the existing cables, as the service life increases, more and more cables are replaced and eliminated, forming a lot of waste cable sheaths, which causes waste of resources and environmental pollution. Therefore, how to recycle waste Cable skin to prepare rodent-proof sheath material has become the top priority