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Low-smoke halogen-free flame-retardant cable and preparation method thereof

A flame-retardant cable and sheath technology, which is applied in the direction of cable/conductor manufacturing, insulated cables, cables, etc., can solve the problems of low biodegradation rate of halogen compounds, large amount of production, environmental pollution, etc.

Pending Publication Date: 2021-02-02
深圳市华亿电讯实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In daily situations, some volatile organic halogen compounds will be absorbed by the human body and accumulate in the human body, which will have adverse effects on human health. The biodegradation rate of halogen compounds is very low, and they are easy to accumulate in the ecosystem, causing pollution to the environment, and Enter the human body through the food chain and affect the human body
In addition, when waste is burned or a fire occurs, halogen-containing materials will produce a lot of smoke and toxic corrosive gases when they are not completely burned, which hinders fire fighting and personnel evacuation

Method used

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  • Low-smoke halogen-free flame-retardant cable and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0080] A kind of microencapsulation red phosphorus, is made by following method:

[0081] Step 1: Put 1 kg of red phosphorus in 1 kg of water, add sodium bicarbonate solution while stirring to make the mixed solution neutral, and obtain pretreated red phosphorus after drying;

[0082] Step 2: Add the pretreated red phosphorus obtained in step 1 into 0.8 kg of zinc sulfate and calcium sulfate mixed solution, wherein the weight ratio of zinc sulfate to calcium sulfate is 1:2, add sodium hydroxide solution to the mixed solution, The pH value of the mixed solution is 8, and the inorganic coated red phosphorus is obtained after drying;

[0083] Step 3: After soaking the inorganic coated red phosphorus obtained in step 2 in water for 2 days, add 10 g of sodium lauryl sulfate to the water soaked with red phosphorus, stir for 5 minutes, add saturated urea solution, and the weight of urea is 20 g, and continue stirring After 10 minutes, add formaldehyde solution dropwise. The weight o...

preparation example 2

[0085] A kind of microencapsulation red phosphorus, is made by following method:

[0086] Step 1: Put 1 kg of red phosphorus in 1 kg of water, add sodium bicarbonate solution while stirring to make the mixed solution neutral, and obtain pretreated red phosphorus after drying;

[0087] Step 2: Add the pretreated red phosphorus obtained in step 1 into 0.8 kg of zinc sulfate and calcium sulfate mixed solution, wherein the weight ratio of zinc sulfate to calcium sulfate is 1:1, add sodium hydroxide solution to the mixed solution, The pH value of the mixed solution is 9, and the inorganic coated red phosphorus is obtained after drying;

[0088] Step 3: After soaking the inorganic coated red phosphorus obtained in step 2 in water for 1 day, add 20 g of sodium lauryl sulfate to the water soaked with red phosphorus, stir for 10 minutes, add saturated urea solution, and the weight of urea is 50 g, and continue stirring After 5 minutes, add formaldehyde solution dropwise. The weight of...

preparation example 3

[0090] A kind of microencapsulation red phosphorus, is made by following method:

[0091] Step 1: Put 1 kg of red phosphorus in 1 kg of water, add sodium bicarbonate solution while stirring to make the mixed solution neutral, and obtain pretreated red phosphorus after drying;

[0092] Step 2: Add the pretreated red phosphorus obtained in step 1 into 0.8kg of zinc sulfate and calcium sulfate mixed solution, wherein the weight ratio of zinc sulfate to calcium sulfate is 1:1.5, add sodium hydroxide solution to the mixed solution, The pH value of the mixed solution is 8.5, and the inorganic coated red phosphorus is obtained after drying;

[0093] Step 3: After soaking the inorganic coated red phosphorus obtained in step 2 in water for 1.5d, add 15g of sodium lauryl sulfate to the water soaked with red phosphorus, stir for 8min, add urea saturated solution, and the weight of urea is 35g, continue Stir for 8 minutes, and then add formaldehyde solution dropwise. The weight of formal...

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Abstract

The invention relates to the field of cables, and particularly discloses a low-smoke halogen-free flame-retardant cable and a preparation method thereof. The flame-retardant cable comprises a core layer and a sheath, the sheath is prepared from the following raw materials: polyethylene, montmorillonite, a dispersing agent, an antioxidant and a flame retardant, wherein the flame retardant comprisesmicroencapsulated red phosphorus, aluminum oxide and hydrotalcite, and the microencapsulated red phosphorus is sequentially subjected to inorganic coating and organic coating in the preparation process, so that the microencapsulated red phosphorus has better stability and flame retardancy. The preparation method of the flame-retardant cable comprises the following steps: firstly preparing the core layer, and then mixing, heating and extruding the raw materials of the sheath, so as to enable the sheath to wrap the outer side of the core layer to form the flame-retardant cable. The flame-retardant cable provided by the invention has a relatively good flame-retardant effect, generates less smoke during combustion, and is relatively small in influence on the environment and relatively green and environment-friendly due to the fact that the flame retardant does not contain halogen.

Description

technical field [0001] The present application relates to the field of cables, more specifically, it relates to a low-smoke, halogen-free flame-retardant cable and a preparation method thereof. Background technique [0002] A cable is a wire that transmits power or information from one place to another and is used to connect circuits, appliances, etc. Among them, cables can be divided into power cables, control cables, compensation cables, shielded cables, high temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, aluminum alloy cables, etc., the application of cables more extensive. [0003] Since cables are generally laid in relatively hidden places in buildings, once a fire occurs due to aging, short circuit or overload, it will be difficult to detect at the beginning, and the smoke will billow when it is discovered. Moreover, the cables will connect each room or unit on the same floor. The wires and cab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K13/06C08K9/10C08K9/04C08K9/02C08K3/34C08K3/02C08K3/22C08K3/26H01B3/44H01B7/17H01B7/18H01B7/295H01B13/24
CPCC08K13/06C08K9/10C08K9/04C08K9/02C08K9/08C08K3/346C08K3/02C08K3/22C08K3/26H01B3/441H01B7/17H01B7/18H01B7/295H01B13/24C08K2003/026C08K2003/2227C08L2201/02C08L2201/22C08L2203/202C08L23/06
Inventor 张大明黄维勇梁新
Owner 深圳市华亿电讯实业有限公司