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Biodegradable composite cable and preparation method thereof

A composite cable and biodegradation technology, which is applied in the field of composite materials, can solve the problems of little research on the environmental protection performance of wires or cables, the degradation effect is not obvious, the toughness and strength decrease, etc., to achieve outstanding nucleation performance, shorten the biodegradation cycle, Effect of improving strength and modulus

Pending Publication Date: 2020-09-11
MIANYANG BAOHE TAIYUE COMM CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current research hotspots on wires or cables are basically low-smoke, halogen-free, flame-retardant and other characteristics, but there is little research on the environmental protection performance of wires or cables. After being discarded, it will seriously pollute the soil environment
Moreover, most of the degradable materials on the market begin to become thinner, their toughness and strength decrease after being exposed to the general environment for 3 months, and gradually break into pieces
If these fragments are buried in garbage or soil, the degradation effect is not obvious

Method used

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  • Biodegradable composite cable and preparation method thereof
  • Biodegradable composite cable and preparation method thereof
  • Biodegradable composite cable and preparation method thereof

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preparation example Construction

[0030] A method for preparing a biodegradable composite cable, comprising the following steps:

[0031] (1) Place polylactic acid, hemp fiber, nanocellulose, soft toughening agent and hard toughening agent in a drying oven for drying, wherein polylactic acid, nanocellulose and hemp fiber are separated at 50-60 Dry for 15-20 hours at ℃, dry for 15-20 hours for soft toughener at 40-50℃, and dry for 2-5 hours for hard toughener at 90-100℃;

[0032] (2) add the twin-screw extruder after the soft toughening agent after drying, hard toughening agent and coupling agent, crosslinking agent melt and mix, the material after extruding is cooled, obtains material A; Material A After mixing with polylactic acid and hemp fiber, add it to a twin-screw extruder and extrude it into a molten state;

[0033] (3) Rapidly pour the prepared molten body into a mold to cool and shape it, and after drying, trim the edges with a pelletizer to obtain the cable material.

[0034] In this embodiment, in...

Embodiment 1

[0039] A biodegradable composite cable, comprising the following components in parts by weight: 50 parts of polylactic acid, 15 parts of hemp fiber, 10 parts of microfibrillated cellulose, ethylene-methyl acrylate-glycidyl methacrylate 1 part of copolymer, 1 part of talcum powder, 1 part of silane coupling agent, 1 part of borax.

[0040] A method for preparing a biodegradable composite cable, comprising the following steps:

[0041] (1) Put polylactic acid, hemp fiber, microfibrillated cellulose, soft toughening agent and hard toughening agent in a drying oven for drying, wherein polylactic acid, microfibrillated cellulose and hemp Dry the hemp fiber at 50°C for 15 hours, dry the soft toughening agent at 40°C for 15 hours, and dry the hard toughening agent at 90°C for 2 hours;

[0042] (2) add the twin-screw extruder after the soft toughening agent after drying, hard toughening agent and coupling agent, crosslinking agent melt and mix, the material after extruding is cooled, o...

Embodiment 2

[0045] A biodegradable composite cable, comprising the following components in parts by weight: 70 parts of polylactic acid, 25 parts of hemp fiber, 20 parts of microfibrillated cellulose, ethylene-methyl acrylate-glycidyl methacrylate 5 parts of copolymer, 5 parts of talcum powder, 5 parts of silane coupling agent, 5 parts of borax.

[0046] A method for preparing a biodegradable composite cable, comprising the following steps:

[0047] (1) Put polylactic acid, hemp fiber, microfibrillated cellulose, soft toughening agent and hard toughening agent in a drying oven for drying, wherein polylactic acid, microfibrillated cellulose and hemp Dry the hemp fiber at 60°C for 20 hours, dry the soft toughener at 50°C for 20 hours, and dry the hard toughener at 100°C for 5 hours;

[0048] (2) add the twin-screw extruder after the soft toughening agent after drying, hard toughening agent and coupling agent, crosslinking agent melt and mix, the material after extruding is cooled, obtains ...

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Abstract

The invention relates to the field of composite materials and discloses a biodegradable composite cable. The polylactic acid composite material comprises the following components in parts by weight: 50-70 parts of polylactic acid, 15-25 parts of hemp fibers, 10-20 parts of nano cellulose, 1-5 parts of a soft toughening agent, 1-5 parts of a hard toughening agent, 1-5 parts of a coupling agent and1-5 parts of a cross-linking agent. The composite material has relatively good biodegradability, mechanical properties, brittleness, heat resistance and impact resistance. The preparation method comprises the following steps: drying polylactic acid, hemp fibers, nano cellulose, a soft toughening agent and a hard toughening agent; melting and mixing the dried soft toughening agent, hard tougheningagent, coupling agent and cross-linking agent, adding the mixture into a double-screw extruder, cooling the extruded material, mixing the cooled material with polylactic acid and China hemp fiber, continuously extruding and melting the mixture, shaping the mixture in a mold, and granulating the shaped product to obtain the biodegradable cable. The whole process of the method is progressive, the material temperature is uniform, and the stability is excellent; and the production has the advantages of high yield, low cost and high popularization speed, and the preparation efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a biodegradable composite cable and a preparation method thereof. Background technique [0002] The current research hotspots on wires or cables are basically low-smoke, halogen-free, flame-retardant and other characteristics, but there is little research on the environmental protection performance of wires or cables. And the soil environment will be seriously polluted after being discarded. Moreover, most degradable materials on the market begin to become thinner, their toughness and strength decrease after being exposed to the general environment for 3 months, and gradually break into pieces. If these fragments are buried in garbage or soil, the degradation effect is not obvious. [0003] In order to reduce soil pollution after long-term use of wire or cable materials, it is necessary to develop a biodegradable cable material. Contents of the invention [0004]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L1/02C08K13/06C08K9/10C08K3/34C08K3/38
CPCC08L67/04C08L2201/08C08L2201/06C08L2205/06C08L2205/16C08L2205/03C08L2205/025C08L2207/53C08K2003/387C08L1/02C08K13/06C08K9/10C08K3/34C08K3/38
Inventor 范敦现
Owner MIANYANG BAOHE TAIYUE COMM CABLE
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