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Preparation method of flame-retardant carbon nanotube enhanced ultra-high molecular weight polyethylene fiber

A technology of ultra-high molecular weight and polyethylene fibers, which is applied in the manufacture of fire-resistant and flame-retardant filaments, single-component polyolefin artificial filaments, and fiber chemical characteristics. Combustion and other problems, to achieve the effect of improving creep resistance and flame retardant effect

Inactive Publication Date: 2016-05-11
西安艾菲尔德复合材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a method for preparing flame-retardant carbon nanotube-reinforced ultra-high molecular weight polyethylene fibers, which solves the technical problem that ultra-high molecular weight polyethylene fibers are prone to creep and flammability existing in the prior art, and improves ultra-high molecular weight polyethylene fibers. Strength and Modulus of High Molecular Weight Polyethylene Fibers

Method used

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Examples

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preparation example Construction

[0019] The preparation method of flame-retardant carbon nanotube reinforced ultra-high molecular weight polyethylene fiber of the present invention comprises the following steps:

[0020] Step 1: carbon nanotube acid oxygen purification, the detailed steps are as follows:

[0021] Add carbon nanotubes to concentrated sulfuric acid for ultrasonic treatment (the volume ratio of carbon nanotubes to concentrated sulfuric acid is 1:50-1:60), slowly raise the temperature to 110-130°C under the condition of magnetic stirring, and then add Drop in KMNO4 aqueous solution with a concentration of 5% to 10% (the volume ratio of the mass of carbon nanotubes to potassium permanganate is 1:20 to 1:30), reflux for 2 to 4 hours after the drop, and add after cooling after the reaction Concentrated hydrochloric acid (the volume ratio of the mass of carbon nanotubes to concentrated hydrochloric acid is 1:10 to 1:15), finally washed with deionized water to pH=7, and filtered through a sand core fu...

Embodiment 1

[0033] Add 2g of CNTs into 120mL of concentrated sulfuric acid for ultrasonic treatment, and slowly raise the temperature to 110°C under the condition of magnetic stirring, at this time, drop KMNO with a concentration of 10% into it 460mL aqueous solution, reflux for 4h, add 30ml of concentrated hydrochloric acid after the reaction is cooled, and finally wash with deionized water to pH = 7, and filter through a sand core funnel to obtain purified CNTs;

[0034] Add the above purified CNTs into 200mL ethanol for ultrasonic dispersion, raise the temperature to 70°C under high-speed magnetic stirring, after stirring evenly, add 30 drops of 5% titanate 201 isopropanol solution, and continue stirring for 2h , after cooling, filter through a sand core funnel, dry, and finally extract through isopropanol Soxhlet, and dry to obtain functionalized CNTs;

[0035] Weigh 80g UHMWPE, prepare it into a 5% concentration UHMWPE solution, add 1.6g of the above-mentioned functionalized CNTs, 0....

Embodiment 2

[0039] Add 1g of CNTs to 50mL of concentrated sulfuric acid for ultrasonic treatment, and slowly raise the temperature to 120°C under the condition of magnetic stirring. Hydrochloric acid, finally washed with deionized water to pH = 7, and filtered through a sand core funnel to obtain purified CNTs;

[0040] Add the above-mentioned CNTs purified by the acid oxygen into 100 mL of ethanol for ultrasonic dispersion, heat up to 70°C under high-speed magnetic stirring, and after stirring evenly, add 12 drops of 4% titanate 101 in isopropanol solution, and continue stirring for 1.5 h, after cooling, filter through a sand core funnel, dry, and finally extract through isopropanol Soxhlet, and dry to obtain functionalized CNTs;

[0041] Weigh 15g UHMWPE, be prepared into a 5% concentration of UHMWPE solution, add 1.05g of the above-mentioned functionalized CNTs, 0.05g of antioxidant JY-1010 and antioxidant JY-168, 0.45g by weight parts respectively 10 parts of ammonium polyphosphate, ...

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Abstract

The invention discloses a preparation method of a flame-retardant carbon nanotube enhanced ultra-high molecular weight polyethylene fiber. Carbon nanotubes are purified and functionalized firstly, and thus good interface performance between the carbon nanotubes and a polyethylene fiber matrix can be achieved; the carbon nanotubes and a fire retardant are subjected to ultrasonic dispersion so that all additives can be uniformly dispersed into the matrix of the ultra-high molecular weight polyethylene fiber. As the carbon nanotubes are added, the creep resistance, strength and modulus of the ultra-high molecular weight polyethylene fiber are improved; besides, as the compound intumescent flame retardant prepared from ammonium polyphosphate, pentaerythritol, melamine and aluminum hydroxide can achieve a synergism effect together with the carbon nanotubes, the flame-retarding effect of the intumescent flame retardant is further improved. The prepared flame-retardant carbon nanotube enhanced ultra-high molecular weight polyethylene fiber can be applied the fields of protective articles and the like with high flame retardancy requirements and is low in creep rate and suitable for long-term use.

Description

technical field [0001] The invention belongs to the field of polymer material preparation, and in particular relates to a method for preparing flame-retardant carbon nanotube-reinforced ultra-high molecular weight polyethylene fibers. Background technique [0002] Ultra-high molecular weight polyethylene fiber (UHMWPE) has a molecular weight between 3 million and 6 million. It is also called gel-spun polyethylene fiber. It is a high-strength, high-modulus fiber and one of the three high-performance fibers today. Due to its excellent mechanical properties, UV resistance, moisture resistance, good durability, flex fatigue resistance, and abrasion resistance, it is widely used in ropes, safety protection, nets, high-performance textiles and composites. Material. But since it is made by -CH 2 -The flexible polymer consists of no polar groups between molecular chains, and the interaction force between them is small. It is prone to creep and poor heat resistance under the action...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/46D01F1/10D01F1/07D01F11/06D01D1/02D01D10/06D01D5/12
Inventor 齐海港
Owner 西安艾菲尔德复合材料科技有限公司
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