阅读说明：本技术 一种纳米导热型腈纶纱线的制备方法 (Preparation method of nano heat-conducting acrylic yarn ) 是由 冼俊谕 李志勇 全金华 李冠螢 于 2020-12-31 设计创作，主要内容包括：本发明涉及腈纶纱线技术领域,尤其涉及一种纳米导热型腈纶纱线的制备方法,包括以下步骤：S1、称取原料；S2、腈纶纺丝液的制备；S3、腈纶纱线的制备,本发明制备的腈纶纱线中含有碳类微纳米导热填料、金属类微纳米导热填料和非金属非碳类微纳米导热填料,碳类微纳米导热填料、金属类微纳米导热填料和非金属非碳类微纳米导热填料与腈纶纱线的相容性好,并且导热填料均为棒状结构,能够更好的与腈纶符合成纤维状,导热填料能够在纤维内形成一个棒状的导热条,能够有效的提高腈纶纱线的导热效果,提高腈纶纱线的运用范围。(The invention relates to the technical field of acrylic yarn, in particular to a preparation method of nano heat-conducting acrylic yarn, which comprises the following steps: s1, weighing the raw materials; s2, preparing acrylic fiber spinning solution; s3, preparing acrylic yarns, wherein the prepared acrylic yarns contain carbon micro-nano heat conducting fillers, metal micro-nano heat conducting fillers and non-metal non-carbon micro-nano heat conducting fillers, the metal micro-nano heat conducting fillers and the non-metal non-carbon micro-nano heat conducting fillers are good in compatibility with the acrylic yarns, the heat conducting fillers are of rod-shaped structures and can better conform to the acrylic fibers to form a fibrous shape, and the heat conducting fillers can form a rod-shaped heat conducting strip in the fibers, so that the heat conducting effect of the acrylic yarns can be effectively improved, and the application range of the acrylic yarns is widened.)

1. The preparation method of the nanometer heat conduction type acrylic yarn is characterized by comprising the following steps of:

s1, weighing the following raw materials: the raw materials comprise the following components in parts by weight: 35-50 parts of polyacrylonitrile, 80-150 parts of dissolving solution, 20-30 parts of carbon micro-nano heat-conducting filler, 20-30 parts of metal micro-nano heat-conducting filler, 20-30 parts of non-metal non-carbon micro-nano heat-conducting filler, 5-12 parts of flame retardant, 0.5-3 parts of compatilizer, 0.5-3 parts of antioxidant and 0.5-3 parts of wetting agent;

s2, preparation of acrylic fiber spinning solution: pretreating polyacrylonitrile, dissolving the pretreated polyacrylonitrile in a dissolving solution to prepare an acrylic fiber stock solution with a certain mass fraction, adding carbon micro-nano heat-conducting filler, metal micro-nano heat-conducting filler, non-metal non-carbon micro-nano heat-conducting filler, a flame retardant, a compatilizer, an antioxidant and a lubricant into the acrylic fiber stock solution, uniformly mixing, and performing ultrasonic dispersion for 10-15min to obtain an acrylic fiber spinning solution;

s3, preparation of acrylic yarns: the acrylic fiber spinning solution is formed by extrusion, solidification, water bath stretching and water washing through a spinning jet, and the nano heat-conducting acrylic fiber yarn is obtained after hot stretching and drying.

2. The method for preparing nanometer heat-conducting acrylic yarn according to claim 1, wherein the metal micro-nano heat-conducting filler is a micro-nano metal compound, the metal in the metal micro-nano heat-conducting filler comprises silver, aluminum and copper, and the mass ratio of silver to aluminum to copper is 0.01-0.03: 1-3: 1; the micro-nano metal composite is formed by combining the metal on the surface of a fibrous micro-nano mineral in a loading, coating, electroplating and chemical plating manner, wherein the micro-nano mineral is at least one of micro-nano potassium titanate fiber, micro-nano titanium dioxide fiber, micro-nano silicon carbide fiber, attapulgite, halloysite, micro-nano talcum powder and micro-nano mica powder.

3. The method for preparing nanometer heat-conducting acrylic yarn according to claim 2, wherein the fibrous micro-nano mineral has a diameter of 20nm to 300nm, an aspect ratio of 30 to 500: 1; the mass ratio of the metal to the micro-nano mineral in the micro-nano metal compound is 0.03-0.2: 1.

4. the method for preparing nanometer heat-conducting acrylic yarn according to claim 1, wherein the carbon-based micro-nano heat-conducting filler is a mixture of carbon nanotubes and graphene, and the mass ratio of the carbon nanotubes to the graphene is 20-40: 1.

5. the method for preparing nanometer heat-conducting acrylic yarn according to claim 1, wherein the non-metallic non-carbon micro-nano heat-conducting filler is at least one of micro-nano boron nitride, micro-nano aluminum nitride fiber, micro-nano aluminum oxide fiber and micro-nano magnesium oxide fiber.

6. The method for preparing nanometer heat-conducting acrylic yarn as claimed in claim 5, wherein the diameter of the non-metal non-carbon micro-nano heat-conducting filler is 20nm-400nm, the length-diameter ratio is 30-600: 1.

7. the method for preparing nanometer heat-conducting acrylic yarn as claimed in claim 1, wherein the dissolving solution is one of dimethylformamide and dimethyl sulfoxide, the antioxidant is triphenyl phosphite, the wetting agent is industrial white oil, the flame retardant is a halogen-free flame retardant, and the compatilizer is at least one of silane coupling agent, titanate coupling agent, aluminate coupling agent, phosphate coupling agent, borate coupling agent, stearic acid and lauric acid.

8. The method for preparing nanometer heat-conducting acrylic yarn as claimed in claim 1, wherein the pretreatment in S2 is alkaline pretreatment, and the specific conditions are as follows: treating in water solution containing 10-25 wt% of sodium hydroxide and 20-35 wt% of ethanol at 60-100 deg.C for 30-150min, washing with hot water, and drying at 60-90 deg.C for 3-4 hr.

9. The method for preparing nanometer heat-conducting acrylic yarn as claimed in claim 1, wherein in S3, the acrylic spinning solution is subjected to microwave treatment before being extruded from a spinneret, and the microwave treatment time is 10-20S.

Technical Field

The invention relates to the technical field of acrylic yarn, in particular to a preparation method of nano heat-conducting acrylic yarn.

Background

Acrylic fiber is the trade name of polyacrylonitrile fiber in China. The acrylic fiber has excellent performance, soft and warm hand feeling and good elasticity. The resistance to light and weather is particularly excellent. Typically made as staple fibers. Can be pure spinning or blended with wool. The wool is used for manufacturing textiles, knitgoods, blankets, tents, curtains, filter cloth and the like, and is called synthetic wool because the properties of the wool are close to those of wool. The flat acrylic yarn is an acrylic yarn with a rectangular or nearly rectangular section, has special luster, bulkiness and pilling resistance, and has good post-processing effect. The hand feeling is similar to that of touch feathers and animal fur, so the leather is mainly used as artificial fur, plush toys, interior decoration, decorative materials in cars and the like.

However, the general thermal conductivity of acrylic fibers limits the application of the acrylic fibers in the fields of heat dissipation, heat conduction and the like, and the application range of the acrylic fibers can be further widened by modifying the acrylic fibers to prepare the heat conduction material.

Therefore, we propose a method for preparing nano heat-conducting acrylic yarn to solve the above problems.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a preparation method of nano heat-conducting acrylic yarn.

A preparation method of nanometer heat conduction acrylic yarn comprises the following steps:

s1, weighing the following raw materials: the raw materials comprise the following components in parts by weight: 35-50 parts of polyacrylonitrile, 80-150 parts of dissolving solution, 20-30 parts of carbon micro-nano heat-conducting filler, 20-30 parts of metal micro-nano heat-conducting filler, 20-30 parts of non-metal non-carbon micro-nano heat-conducting filler, 5-12 parts of flame retardant, 0.5-3 parts of compatilizer, 0.5-3 parts of antioxidant and 0.5-3 parts of wetting agent;

s2, preparation of acrylic fiber spinning solution: pretreating polyacrylonitrile, dissolving the pretreated polyacrylonitrile in a dissolving solution to prepare an acrylic fiber stock solution with a certain mass fraction, adding carbon micro-nano heat-conducting filler, metal micro-nano heat-conducting filler, non-metal non-carbon micro-nano heat-conducting filler, a flame retardant, a compatilizer, an antioxidant and a lubricant into the acrylic fiber stock solution, uniformly mixing, and performing ultrasonic dispersion for 10-15min to obtain an acrylic fiber spinning solution;

s3, preparation of acrylic yarns: the acrylic fiber spinning solution is formed by extrusion, solidification, water bath stretching and water washing through a spinning jet, and the nano heat-conducting acrylic fiber yarn is obtained after hot stretching and drying.

Preferably, the metal micro-nano heat conducting filler is a micro-nano metal compound, the metal in the metal micro-nano heat conducting filler comprises silver, aluminum and copper, and the mass ratio of the silver to the aluminum to the copper is 0.01-0.03: 1-3: 1; the micro-nano metal composite is formed by combining the metal on the surface of a fibrous micro-nano mineral in a loading, coating, electroplating and chemical plating manner, wherein the micro-nano mineral is at least one of micro-nano potassium titanate fiber, micro-nano titanium dioxide fiber, micro-nano silicon carbide fiber, attapulgite, halloysite, micro-nano talcum powder and micro-nano mica powder.

Preferably, the diameter of the fibrous micro-nano mineral is 20nm to 300nm, the length-diameter ratio is 30 to 500: 1; the mass ratio of the metal to the micro-nano mineral in the micro-nano metal compound is 0.03-0.2: 1.

preferably, the carbon micro-nano heat conducting filler is a mixture of carbon nanotubes and graphene, and the mass ratio of the carbon nanotubes to the graphene is 20-40: 1.

preferably, the nonmetal non-carbon micro-nano heat conducting filler is at least one of micro-nano boron nitride, micro-nano aluminum nitride fibers, micro-nano aluminum oxide fibers and micro-nano magnesium oxide fibers.

Preferably, the diameter of the nonmetal non-carbon micro-nano heat conducting filler is 20nm-400nm, the length-diameter ratio is 30-600: 1.

preferably, the dissolving solution is one of dimethylformamide and dimethyl sulfoxide, the antioxidant is triphenyl phosphite, the wetting agent is industrial white oil, the flame retardant is a halogen-free flame retardant, and the compatilizer is at least one of a silane coupling agent, a titanate coupling agent, an aluminate coupling agent, a phosphate coupling agent, a borate coupling agent, stearic acid and lauric acid.

Preferably, in S2, the pretreatment is an alkaline pretreatment, and the specific conditions are as follows: treating in water solution containing 10-25 wt% of sodium hydroxide and 20-35 wt% of ethanol at 60-100 deg.C for 30-150min, washing with hot water, and drying at 60-90 deg.C for 3-4 hr.

Preferably, in the step S3, the acrylic fiber spinning solution is subjected to microwave treatment before being extruded through a spinneret, and the microwave treatment time is 10 to 20 seconds.

The invention has the beneficial effects that: the acrylic yarn prepared by the invention contains the carbon micro-nano heat-conducting filler, the metal micro-nano heat-conducting filler and the non-metal non-carbon micro-nano heat-conducting filler, the metal micro-nano heat-conducting filler and the non-metal non-carbon micro-nano heat-conducting filler have good compatibility with the acrylic yarn, the heat-conducting fillers are all rod-shaped structures and can better conform to the acrylic fibers to form a fiber shape, and the heat-conducting fillers can form a rod-shaped heat-conducting strip in the fibers, so that the heat-conducting effect of the acrylic yarn can be effectively improved, and the application range of.

Detailed Description

The present invention will be further illustrated with reference to the following specific examples.

In example 1, a method for preparing a nano heat-conducting acrylic yarn includes the following steps:

s1, weighing the following raw materials: the raw materials comprise the following components in parts by weight: 35 parts of polyacrylonitrile, 80 parts of dissolving solution, 20 parts of carbon micro-nano heat-conducting filler, 20 parts of metal micro-nano heat-conducting filler, 20 parts of non-metal non-carbon micro-nano heat-conducting filler, 5 parts of flame retardant, 0.5 part of compatilizer, 0.5 part of antioxidant and 0.5 part of wetting agent;

s2, preparation of acrylic fiber spinning solution: pretreating polyacrylonitrile, dissolving the pretreated polyacrylonitrile in a dissolving solution to prepare an acrylic fiber stock solution with a certain mass fraction, adding carbon micro-nano heat-conducting filler, metal micro-nano heat-conducting filler, non-metal non-carbon micro-nano heat-conducting filler, a flame retardant, a compatilizer, an antioxidant and a lubricant into the acrylic fiber stock solution, uniformly mixing, and performing ultrasonic dispersion for 10-15min to obtain an acrylic fiber spinning solution;

s3, preparation of acrylic yarns: the acrylic fiber spinning solution is formed by extrusion, solidification, water bath stretching and water washing through a spinning jet, and the nano heat-conducting acrylic fiber yarn is obtained after hot stretching and drying.

Further, the metal micro-nano heat conducting filler is a micro-nano metal compound, the metal in the metal micro-nano heat conducting filler comprises silver, aluminum and copper, and the mass ratio of the silver to the aluminum to the copper is 0.01: 1: 1; the micro-nano metal composite is formed by combining the metal on the surface of a fibrous micro-nano mineral in a loading, coating, electroplating and chemical plating manner, wherein the micro-nano mineral is at least one of micro-nano potassium titanate fiber, micro-nano titanium dioxide fiber, micro-nano silicon carbide fiber, attapulgite, halloysite, micro-nano talcum powder and micro-nano mica powder.

Further, the diameter of the fibrous micro-nano mineral is 20nm-300nm, the length-diameter ratio is 30-500: 1; the mass ratio of metal to micro-nano mineral in the micro-nano metal compound is 0.03: 1.

further, the carbon-based micro-nano heat conducting filler is a mixture of carbon nanotubes and graphene, and the mass ratio of the carbon nanotubes to the graphene is 20: 1.

furthermore, the non-metal non-carbon micro-nano heat conducting filler is at least one of micro-nano boron nitride, micro-nano aluminum nitride fibers, micro-nano aluminum oxide fibers and micro-nano magnesium oxide fibers.

Further, the diameter of the nonmetal non-carbon micro-nano heat conducting filler is 20nm-400nm, the length-diameter ratio is 30-600: 1.

further, the dissolving solution is one of dimethylformamide and dimethyl sulfoxide, the antioxidant is triphenyl phosphite, the wetting agent is industrial white oil, the flame retardant is a halogen-free flame retardant, and the compatilizer is at least one of a silane coupling agent, a titanate coupling agent, an aluminate coupling agent, a phosphate coupling agent, a borate coupling agent, stearic acid and lauric acid.

Further, in S2, the pretreatment is an alkaline pretreatment, and the specific conditions are as follows: treating in water solution containing 10 wt% of sodium hydroxide and 20 wt% of ethanol at 60-100 deg.C for 30-150min, washing with hot water, and drying at 60-90 deg.C for 3-4 hr.

Further, in S3, the acrylic fiber spinning solution is subjected to microwave treatment before being extruded through a spinneret, and the microwave treatment time is 10-20S.

In embodiment 2, a method for preparing a nano heat-conducting acrylic yarn includes the following steps:

s1, weighing the following raw materials: the raw materials comprise the following components in parts by weight: 50 parts of polyacrylonitrile, 150 parts of a dissolving solution, 30 parts of carbon micro-nano heat-conducting filler, 30 parts of metal micro-nano heat-conducting filler, 30 parts of non-metal non-carbon micro-nano heat-conducting filler, 12 parts of a flame retardant, 3 parts of a compatilizer, 3 parts of an antioxidant and 3 parts of a wetting agent;

s2, preparation of acrylic fiber spinning solution: pretreating polyacrylonitrile, dissolving the pretreated polyacrylonitrile in a dissolving solution to prepare an acrylic fiber stock solution with a certain mass fraction, adding carbon micro-nano heat-conducting filler, metal micro-nano heat-conducting filler, non-metal non-carbon micro-nano heat-conducting filler, a flame retardant, a compatilizer, an antioxidant and a lubricant into the acrylic fiber stock solution, uniformly mixing, and performing ultrasonic dispersion for 10-15min to obtain an acrylic fiber spinning solution;

s3, preparation of acrylic yarns: the acrylic fiber spinning solution is formed by extrusion, solidification, water bath stretching and water washing through a spinning jet, and the nano heat-conducting acrylic fiber yarn is obtained after hot stretching and drying.

Further, the metal micro-nano heat conducting filler is a micro-nano metal compound, the metal in the metal micro-nano heat conducting filler comprises silver, aluminum and copper, and the mass ratio of the silver to the aluminum to the copper is 0.03: 3: 1; the micro-nano metal composite is formed by combining the metal on the surface of a fibrous micro-nano mineral in a loading, coating, electroplating and chemical plating manner, wherein the micro-nano mineral is at least one of micro-nano potassium titanate fiber, micro-nano titanium dioxide fiber, micro-nano silicon carbide fiber, attapulgite, halloysite, micro-nano talcum powder and micro-nano mica powder.

Further, the diameter of the fibrous micro-nano mineral is 20nm-300nm, the length-diameter ratio is 30-500: 1; the mass ratio of metal to micro-nano mineral in the micro-nano metal compound is 0.2: 1.

further, the carbon-based micro-nano heat conducting filler is a mixture of carbon nanotubes and graphene, and the mass ratio of the carbon nanotubes to the graphene is 40: 1.

furthermore, the non-metal non-carbon micro-nano heat conducting filler is at least one of micro-nano boron nitride, micro-nano aluminum nitride fibers, micro-nano aluminum oxide fibers and micro-nano magnesium oxide fibers.

Further, the diameter of the nonmetal non-carbon micro-nano heat conducting filler is 20nm-400nm, the length-diameter ratio is 30-600: 1.

further, the dissolving solution is one of dimethylformamide and dimethyl sulfoxide, the antioxidant is triphenyl phosphite, the wetting agent is industrial white oil, the flame retardant is a halogen-free flame retardant, and the compatilizer is at least one of a silane coupling agent, a titanate coupling agent, an aluminate coupling agent, a phosphate coupling agent, a borate coupling agent, stearic acid and lauric acid.

Further, in S2, the pretreatment is an alkaline pretreatment, and the specific conditions are as follows: treating in water solution containing 25% sodium hydroxide and 35% ethanol at 60-100 deg.C for 30-150min, washing with hot water, and drying at 60-90 deg.C for 3-4 hr under vacuum.

Further, in S3, the acrylic fiber spinning solution is subjected to microwave treatment before being extruded through a spinneret, and the microwave treatment time is 10-20S.

In embodiment 3, a method for preparing a nano heat-conducting acrylic yarn includes the following steps:

s1, weighing the following raw materials: the raw materials comprise the following components in parts by weight: 42 parts of polyacrylonitrile, 110 parts of a dissolving solution, 25 parts of a carbon micro-nano heat-conducting filler, 25 parts of a metal micro-nano heat-conducting filler, 25 parts of a non-metal non-carbon micro-nano heat-conducting filler, 8 parts of a flame retardant, 2 parts of a compatilizer, 2 parts of an antioxidant and 2 parts of a wetting agent;

s2, preparation of acrylic fiber spinning solution: pretreating polyacrylonitrile, dissolving the pretreated polyacrylonitrile in a dissolving solution to prepare an acrylic fiber stock solution with a certain mass fraction, adding carbon micro-nano heat-conducting filler, metal micro-nano heat-conducting filler, non-metal non-carbon micro-nano heat-conducting filler, a flame retardant, a compatilizer, an antioxidant and a lubricant into the acrylic fiber stock solution, uniformly mixing, and performing ultrasonic dispersion for 10-15min to obtain an acrylic fiber spinning solution;

s3, preparation of acrylic yarns: the acrylic fiber spinning solution is formed by extrusion, solidification, water bath stretching and water washing through a spinning jet, and the nano heat-conducting acrylic fiber yarn is obtained after hot stretching and drying.

Further, the metal micro-nano heat conducting filler is a micro-nano metal compound, the metal in the metal micro-nano heat conducting filler comprises silver, aluminum and copper, and the mass ratio of the silver to the aluminum to the copper is 0.02: 2: 1; the micro-nano metal composite is formed by combining the metal on the surface of a fibrous micro-nano mineral in a loading, coating, electroplating and chemical plating manner, wherein the micro-nano mineral is at least one of micro-nano potassium titanate fiber, micro-nano titanium dioxide fiber, micro-nano silicon carbide fiber, attapulgite, halloysite, micro-nano talcum powder and micro-nano mica powder.

Further, the diameter of the fibrous micro-nano mineral is 20nm-300nm, the length-diameter ratio is 30-500: 1; the mass ratio of metal to micro-nano mineral in the micro-nano metal compound is 0.1: 1.

further, the carbon-based micro-nano heat conducting filler is a mixture of carbon nanotubes and graphene, and the mass ratio of the carbon nanotubes to the graphene is 30: 1.

furthermore, the non-metal non-carbon micro-nano heat conducting filler is at least one of micro-nano boron nitride, micro-nano aluminum nitride fibers, micro-nano aluminum oxide fibers and micro-nano magnesium oxide fibers.

Further, the diameter of the nonmetal non-carbon micro-nano heat conducting filler is 20nm-400nm, the length-diameter ratio is 30-600: 1.

further, the dissolving solution is one of dimethylformamide and dimethyl sulfoxide, the antioxidant is triphenyl phosphite, the wetting agent is industrial white oil, the flame retardant is a halogen-free flame retardant, and the compatilizer is at least one of a silane coupling agent, a titanate coupling agent, an aluminate coupling agent, a phosphate coupling agent, a borate coupling agent, stearic acid and lauric acid.

Further, in S2, the pretreatment is an alkaline pretreatment, and the specific conditions are as follows: treating in water solution containing 18 wt% of sodium hydroxide and 27 wt% of ethanol at 60-100 deg.C for 30-150min, washing with hot water, and drying at 60-90 deg.C for 3-4 hr.

Further, in S3, the acrylic fiber spinning solution is subjected to microwave treatment before being extruded through a spinneret, and the microwave treatment time is 10-20S.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.