CN113386409A - Waterproof corrosion-resistant polyethylene fabric and preparation method thereof - Google Patents

Waterproof corrosion-resistant polyethylene fabric and preparation method thereof Download PDF

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Publication number
CN113386409A
CN113386409A CN202110604387.1A CN202110604387A CN113386409A CN 113386409 A CN113386409 A CN 113386409A CN 202110604387 A CN202110604387 A CN 202110604387A CN 113386409 A CN113386409 A CN 113386409A
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polyethylene
layer
waterproof
parts
fabric
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CN113386409B (en
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翁星星
吕东梅
刘涛涛
沈亚定
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Jiangsu Housheng New Energy Technology Co Ltd
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Jiangsu Housheng New Energy Technology Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/08—Impregnating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B15/00—Preparation of other cellulose derivatives or modified cellulose, e.g. complexes
    • C08B15/05—Derivatives containing elements other than carbon, hydrogen, oxygen, halogens or sulfur
    • C08B15/06—Derivatives containing elements other than carbon, hydrogen, oxygen, halogens or sulfur containing nitrogen, e.g. carbamates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/12—Chemical modification
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J101/00—Adhesives based on cellulose, modified cellulose, or cellulose derivatives
    • C09J101/08—Cellulose derivatives
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/80—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with boron or compounds thereof, e.g. borides
    • D06M11/82—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with boron or compounds thereof, e.g. borides with boron oxides; with boric, meta- or perboric acids or their salts, e.g. with borax
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/144—Alcohols; Metal alcoholates
    • D06M13/148—Polyalcohols, e.g. glycerol or glucose
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
    • D06M13/282—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing phosphorus
    • D06M13/292—Mono-, di- or triesters of phosphoric or phosphorous acids; Salts thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/402—Amides imides, sulfamic acids
    • D06M13/432—Urea, thiourea or derivatives thereof, e.g. biurets; Urea-inclusion compounds; Dicyanamides; Carbodiimides; Guanidines, e.g. dicyandiamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/06—Vegetal fibres
    • B32B2262/062—Cellulose fibres, e.g. cotton
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/02—Natural fibres, other than mineral fibres
    • D06M2101/04—Vegetal fibres
    • D06M2101/06—Vegetal fibres cellulosic
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/30—Flame or heat resistance, fire retardancy properties

Abstract

The invention discloses a waterproof corrosion-resistant polyethylene fabric and a preparation method thereof. The polyethylene fabric comprises a base cloth layer, a waterproof bonding layer and a polyethylene layer which are sequentially stacked; the base cloth layer comprises cotton cloth and a flame retardant; the waterproof bonding layer is a cellulose polymer containing long-chain alkyl. Has the advantages that: (1) boric acid and phytic acid are chelated and crosslinked by glucose to prepare an environment-friendly phosphorus-nitrogen synergistic flame retardant, so that the flame retardance of the fabric is effectively improved; (2) the cellulose polymer containing alkyl long chain and isocyanate is prepared, the waterproofness is increased, and the base cloth layer and the polyethylene layer are effectively bonded through the reaction of the isocyanate, hydroxyl and amino; (3) by adding n-hexadecane into the pre-immersion liquid, the load of the silane coupling agent modified titanium dioxide nano particles on the polyethylene film is effectively enhanced, and the corrosion resistance and the waterproofness are further enhanced.

Description

Waterproof corrosion-resistant polyethylene fabric and preparation method thereof
Technical Field
The invention relates to the technical field of fabrics, in particular to a waterproof corrosion-resistant polyethylene fabric and a preparation method thereof.
Background
In modern life, textiles made of various fabrics can be seen everywhere; with the diversification of society, the requirements for the functions of the fabrics in various industries tend to be diversified. Wherein, in the process of textile dyeing and finishing, chemical substances such as water, acid, salt and the like can be contacted for a long time; therefore, a product fabric with waterproof and corrosion resistance needs to be prepared to meet the use requirements of special industries. On the other hand, the polyethylene film is a waterproof and corrosion-resistant polymer film, and can be compounded with base cloth to form multifunctional fabric; but the polyethylene film has poor oxidizability, the inoxidizability of the polyethylene film can be increased by loading inorganic nano particles on the surface, and meanwhile, the corrosion resistance and the water resistance are further improved, so that the requirements of more severe industries are met; however, the regularity of molecular chains in polyethylene is difficult to load inorganic nanoparticles, so that the load acting force is low and the load capacity is low. In addition, the flame retardant function of the fabric can effectively improve the safety, but the common flame retardant has poor washing resistance and poor environmental protection.
Therefore, the preparation of the waterproof and corrosion-resistant polyethylene fabric with the flame-retardant function has important significance in solving the problems.
Disclosure of Invention
The invention aims to provide a waterproof corrosion-resistant polyethylene fabric and a preparation method thereof, and aims to solve the problems in the background art.
In order to solve the technical problems, the invention provides the following technical scheme:
a waterproof corrosion-resistant polyethylene fabric comprises a base cloth layer, a waterproof bonding layer and a polyethylene layer which are sequentially stacked; the base cloth layer comprises cotton cloth and a flame retardant; the waterproof bonding layer is a cellulose polymer containing long-chain alkyl.
Preferably, the raw materials of the flame retardant comprise the following components: 13-18 parts of phytic acid, 5-8 parts of boric acid, 25-32 parts of urea and 5-10 parts of glucose by weight.
Preferably, the cellulose polymer is prepared by the steps of firstly amido oxidized cellulose and then polymerizing by taking hexamethylene diisocyanate as a cross-linking agent.
Preferably, the polyethylene layer is obtained by modifying the surface of the polyethylene film through a pre-dipping solution; the raw materials of the polyethylene film comprise the following components: 8-16 parts of high-density polyethylene, 60-70 parts of low-density polyethylene and 5-12 parts of ultrahigh molecular weight polyethylene.
Preferably, the raw materials of the pre-immersion liquid comprise the following components: 60-80 parts of dimethylbenzene, 5-8 parts of 3-aminopropyltriethoxysilane, 10-20 parts of n-hexadecane and 2-5 parts of titanium dioxide nanoparticles.
Preferably, the preparation method of the waterproof corrosion-resistant polyethylene fabric comprises the following steps:
step 1: preparing a base fabric layer: (1) stirring phytic acid, glucose, boric acid and urea solution for reaction to obtain a flame retardant; (2) soaking cotton cloth in the flame retardant, drying, and curing; circularly dipping and curing for 3 times to obtain a base cloth layer;
step 2: preparing a waterproof bonding layer: dissolving oxidized cellulose in deionized water, adding 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride and N-hydroxysuccinimide, and adding N-hexadecylpropionamide solution; carrying out reaction; filtering, washing and dialyzing to obtain amidated cellulose; adding hexamethylene diisocyanate into tetrahydrofuran, reacting, cooling, washing with tetrahydrofuran and dispersing to obtain cellulose polymer dispersion liquid;
and step 3: preparing a polyethylene layer: (1) melting and blending high-density polyethylene, low-density polyethylene and ultrahigh molecular weight polyethylene, casting to form a film, and performing biaxial tension to obtain a polyethylene film; (2) uniformly mixing dimethylbenzene, 3-aminopropyl triethoxysilane and n-hexadecane; adding titanium dioxide nano particles, and mixing to obtain a pre-immersion liquid; (3) immersing the polyethylene film into the pre-immersion liquid, taking out, and drying in vacuum to obtain a polyethylene layer;
and 4, step 4: preparing a polyethylene fabric: and (3) placing the base cloth layer on a hot rolling mill, spraying the cellulose polymer dispersion liquid on the surface of the base cloth layer, covering the polyethylene layer, and hot rolling to obtain the polyethylene fabric.
Preferably, in step 1, the specific steps are as follows: (1) stirring and mixing phytic acid, glucose and boric acid, and stirring for 1-2 hours at the temperature of 58-65 ℃; adding a urea solution with the concentration of 0.05-0.1 mol/L, and reacting for 6-8 hours at the temperature of 85-95 ℃ to obtain a flame retardant; (2) soaking cotton cloth in a flame retardant, and carrying out ultrasonic treatment for 30-40 minutes at the temperature of 40-50 ℃ in a bath ratio of 1 (18-20); taking out and drying, and curing for 5-10 minutes at the set temperature of 170-175 ℃; and (3) circularly dipping and curing to obtain the base fabric layer.
Preferably, in step 2, the specific steps are as follows: dissolving oxidized cellulose in deionized water, adding 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride and N-hydroxysuccinimide, setting the pH value to be 5.5-6, and adding N-hexadecylpropionamide solution; adjusting the pH value to 7.5-8, and setting the temperature to 60-70 ℃ for reaction for 8-12 hours; filtering, washing and dialyzing to obtain amidated cellulose; ultrasonically dispersing the cellulose polymer in tetrahydrofuran, adding hexamethylene diisocyanate, reacting for 20-24 hours at the temperature of 60-70 ℃, cooling, washing with tetrahydrofuran and dispersing to obtain cellulose polymer dispersion liquid.
Preferably, in step 3 (3), the specific steps are as follows: and heating the pre-immersion liquid to 105-110 ℃, immersing the polyethylene film into the pre-immersion liquid for 5-15 seconds, taking out, and carrying out vacuum drying at 60-70 ℃ to obtain the polyethylene layer.
Preferably, in step 4, the hot pressing conditions are as follows: the temperature is 70-100 ℃, the pressure is 300-500 KPa, and the time is 2-5 minutes.
In the technical scheme, a base cloth layer is obtained by using cotton cloth as a base, dipping a fire retardant and crosslinking on the cotton cloth; modifying oxidized cellulose to obtain a cellulose polymer containing long alkyl chains and isocyanate groups, and taking the cellulose polymer as a waterproof bonding layer; then taking the polyethylene film treated by the pre-dipping solution as a polyethylene layer; the reaction of isocyanate group with amino group and hydroxyl group can effectively bond to obtain the polyethylene fabric with excellent flame retardance, waterproofness and corrosion resistance.
Firstly, phytic acid has great potential for improving the flame retardancy of textile materials, but has poor wash fastness; therefore, glucose is used as a cross-linking agent, and boric acid and phytic acid are chelated and cross-linked to prepare the environment-friendly phosphorus-nitrogen synergistic flame retardant; the glucose is oxidized to form ester bonds with hydroxyl on the cotton cloth, and chelate compounds such as phytic acid and the like are utilized to form covalent bonds with the hydroxyl on the cotton fiber, so that the effective load is carried on the cotton cloth; and through the cross-linking process of the flame retardant, the load is dipped and cured for a few times, the load of the flame retardant is effectively loaded, and the washing fastness and the flame retardant performance of the flame retardant are effectively enhanced. The specific flame retardant mechanism is as follows: firstly, boron can form a compact oxide isolation layer to effectively block heat transfer; secondly, the polysaccharide forms a carbonization layer which cooperates with boron to block oxygen and heat and mass transfer; third, the chemical combination of boron and phosphate reduces acidity in the initial thermal stage, thereby reducing acid-catalyzed degradation.
Secondly, reacting N-hexadecyl propionamide with alkyl long-chain groups with carboxyl on oxidized cellulose, amidating the cellulose, and grafting alkyl long chains with hydrophobicity; and grafting isocyanate group with polyisocyanate as a cross-linking agent to obtain the cellulose polymer with both alkyl long chain and isocyanate group, so that the waterproof capability can be improved, and the bonding effect can be achieved. Specifically, the method comprises the following steps: the flame retardant is effectively sprayed on the base cloth layer by utilizing the reaction of isocyanate groups and hydroxyl groups, the hydroxyl groups on one surface of the base cloth layer are reacted to enhance the waterproofness of the base cloth layer, the bonding effect is achieved, and the washing resistance of the flame retardant is improved.
Thirdly, the polyethylene film is treated by pre-immersion liquid, so that the waterproofness and the corrosion resistance of the polyethylene film are further enhanced, and the waterproofness and the corrosion resistance of the polyethylene fabric are effectively enhanced. The pre-immersion liquid consists of dimethylbenzene, silane coupling agent, n-hexadecane and nano titanium dioxide; when the polyethylene film is immersed in the heated pre-immersion liquid, the surface of the polyethylene film is contacted with xylene, the solvent is infiltrated and diffused into the polyethylene, the polyethylene is expanded, the surface is in a gel state, and at the moment, a polymer chain is opened, so that the silane coupling agent is anchored in the polyethylene molecular chain, titanium dioxide with photooxidation resistance is loaded on the surface of the polyethylene film, the cohesive force is increased, and the washing resistance is increased. The effective bonding is also carried out by utilizing the reaction of amino on the silane coupling agent and isocyanate.
In the process, the temperature of the prepreg is set to be close to the melting temperature of the low-density polyethylene; the temperature is not suitable to be too high, the dipping time is not long, solvent molecules are dipped too much, and the polyethylene film is partially dissolved. The n-hexadecane is added into the pre-impregnation liquid, firstly, because of the similarity of alkyl and polyethylene molecular chains, the surface expansion of the polymer can be promoted, so that the alkyl-polyethylene interaction is realized, the silane coupling agent can be grafted to the inner layer of the polymer, the grafting rate and the grafting acting force of the silane coupling agent are increased, and the function of a compatilizer is achieved; and the long amount of alkyl increases hydrophobicity, the corrosion resistance is effectively enhanced by titanium dioxide adsorbed on the surface, the uniformity of the titanium dioxide on a polyethylene film is increased by adding n-hexadecane, and the affinity between the polyethylene layer and the bonding layer is effectively increased by grafting hexadecane on a polyethylene chain.
Compared with the prior art, the invention has the following beneficial effects: (1) boric acid and phytic acid are chelated and crosslinked through glucose to prepare a phosphorus-nitrogen synergistic flame retardant, so that the flame retardance of the fabric is effectively improved; (2) the cellulose polymer containing alkyl long chain and isocyanate is prepared, the waterproofness is increased, and the base cloth layer and the polyethylene layer are effectively bonded through the reaction of the isocyanate, hydroxyl and amino; (3) by adding n-hexadecane into the pre-immersion liquid, the load of the silane coupling agent modified titanium dioxide nano particles on the polyethylene film is effectively enhanced, and the corrosion resistance and the waterproofness are further enhanced.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
step 1: preparing a base fabric layer: stirring and mixing phytic acid, glucose and boric acid, and stirring for 1.5 hours at the set temperature of 60 ℃; adding urea solution with the concentration of 0.08mol/L, and reacting for 7 hours at the set temperature of 90 ℃ to obtain the flame retardant; soaking cotton cloth in a flame retardant, and carrying out ultrasonic treatment at the temperature of 45 ℃ for 35 minutes at a bath ratio of 1: 19; taking out and drying, setting the temperature at 172 ℃ and curing for 8 minutes; circularly dipping and curing for 3 times to obtain a base cloth layer;
step 2: preparing a waterproof bonding layer: dissolving oxidized cellulose in deionized water, adding 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride and N-hydroxysuccinimide, setting the pH to be 5.8, and adding N-hexadecylpropionamide solution; adjusting the pH value to 7.8, and setting the temperature to 65 ℃ for reaction for 10 hours; filtering, washing and dialyzing to obtain amidated cellulose; ultrasonically dispersing the cellulose polymer in tetrahydrofuran, adding hexamethylene diisocyanate, reacting for 22 hours at the set temperature of 65 ℃, cooling, washing by using the tetrahydrofuran and dispersing to obtain cellulose polymer dispersion liquid;
and step 3: preparing a polyethylene layer: melting and blending high-density polyethylene, low-density polyethylene and ultrahigh molecular weight polyethylene, casting to form a film, and performing biaxial tension to obtain a polyethylene film; uniformly mixing dimethylbenzene, 3-aminopropyl triethoxysilane and n-hexadecane to form a mixed solvent; adding titanium dioxide nano particles, and stirring for 2.5 hours to obtain a pre-immersion liquid; heating the pre-immersion liquid to 108 ℃, immersing the polyethylene film into the pre-immersion liquid for 10 seconds, taking out, and drying in vacuum at 65 ℃ to obtain the polyethylene layer.
And 4, step 4: preparing a polyethylene fabric: and (3) placing the base fabric layer on a hot rolling mill, spraying the cellulose polymer dispersion liquid on the surface of the base fabric layer, covering the polyethylene layer, and hot rolling at the temperature of 85 ℃ and under the pressure of 400KPa for 3 minutes to obtain the polyethylene fabric.
In the technical scheme, the raw materials of the flame retardant comprise the following components: by weight, 15 parts of phytic acid, 6 parts of boric acid, 29 parts of urea and 7 parts of glucose. The polyethylene layer is obtained by modifying the surface of a polyethylene film through a pre-dipping solution; the raw materials of the polyethylene film comprise the following components: 10 parts of high-density polyethylene, 65 parts of low-density polyethylene and 8 parts of ultrahigh molecular weight polyethylene. The raw materials of the pre-immersion liquid comprise the following components: by weight, 70 parts of dimethylbenzene, 7 parts of 3-aminopropyltriethoxysilane, 18 parts of n-hexadecane and 3 parts of titanium dioxide nanoparticles.
Example 2:
step 1: preparing a base fabric layer: stirring and mixing phytic acid, glucose and boric acid, and stirring for 1 hour at the set temperature of 58 ℃; adding urea solution with the concentration of 0.05mol/L, and reacting for 6 hours at the set temperature of 85 ℃ to obtain the flame retardant; soaking cotton cloth in a flame retardant, and carrying out ultrasonic treatment at 40 ℃ for 30 minutes at a bath ratio of 1: 18; taking out and drying, setting the temperature at 170 ℃ and curing for 5 minutes; circularly dipping and curing for 3 times to obtain a base cloth layer;
step 2: preparing a waterproof bonding layer: dissolving oxidized cellulose in deionized water, adding 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride and N-hydroxysuccinimide, setting the pH to be 5.5, and adding N-hexadecylpropionamide solution; adjusting the pH value to 7.5, and setting the temperature to 60 ℃ for reaction for 8 hours; filtering, washing and dialyzing to obtain amidated cellulose; ultrasonically dispersing the cellulose polymer in tetrahydrofuran, adding hexamethylene diisocyanate, reacting for 20 hours at the set temperature of 60 ℃, cooling, washing by using the tetrahydrofuran and dispersing to obtain cellulose polymer dispersion liquid;
and step 3: preparing a polyethylene layer: melting and blending high-density polyethylene, low-density polyethylene and ultrahigh molecular weight polyethylene, casting to form a film, and performing biaxial tension to obtain a polyethylene film; uniformly mixing dimethylbenzene, 3-aminopropyl triethoxysilane and n-hexadecane to form a mixed solvent; adding titanium dioxide nano particles, and stirring for 2 hours to obtain a pre-immersion liquid; heating the pre-immersion liquid to 105 deg.C, immersing polyethylene film in the pre-immersion liquid for 5 s, taking out, and vacuum drying at 60 deg.C to obtain polyethylene layer.
And 4, step 4: preparing a polyethylene fabric: and (3) placing the base fabric layer on a hot rolling mill, spraying the cellulose polymer dispersion liquid on the surface of the base fabric layer, covering the polyethylene layer, and hot rolling at the temperature of 70 ℃ under the pressure of 300KPa for 2-5 minutes to obtain the polyethylene fabric.
In the technical scheme, the raw materials of the flame retardant comprise the following components: 13 parts of phytic acid, 5-8 parts of boric acid, 25 parts of urea and 5 parts of glucose. The polyethylene layer is obtained by modifying the surface of a polyethylene film through a pre-dipping solution; the raw materials of the polyethylene film comprise the following components: 8 parts of high-density polyethylene, 60 parts of low-density polyethylene and 5 parts of ultrahigh molecular weight polyethylene. The raw materials of the pre-immersion liquid comprise the following components: 60 parts of dimethylbenzene, 5 parts of 3-aminopropyl triethoxysilane, 10 parts of n-hexadecane and 2 parts of titanium dioxide nanoparticles.
Example 3:
step 1: preparing a base fabric layer: stirring and mixing phytic acid, glucose and boric acid, and stirring for 2 hours at the set temperature of 65 ℃; adding urea solution with the concentration of 0.1mol/L, and reacting for 8 hours at the set temperature of 95 ℃ to obtain the flame retardant; soaking cotton cloth in a flame retardant, and carrying out ultrasonic treatment at 50 ℃ for 40 minutes at a bath ratio of 1: 20; taking out and drying, setting the temperature at 175 ℃ and curing for 10 minutes; circularly dipping and curing for 3 times to obtain a base cloth layer;
step 2: preparing a waterproof bonding layer: dissolving oxidized cellulose in deionized water, adding 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride and N-hydroxysuccinimide, setting the pH value to be 6, and adding N-hexadecylpropionamide solution; adjusting the pH value to 8, and setting the temperature to 70 ℃ for reaction for 12 hours; filtering, washing and dialyzing to obtain amidated cellulose; ultrasonically dispersing the cellulose polymer in tetrahydrofuran, adding hexamethylene diisocyanate, reacting for 24 hours at the set temperature of 70 ℃, cooling, washing by using the tetrahydrofuran and dispersing to obtain cellulose polymer dispersion liquid;
and step 3: preparing a polyethylene layer: melting and blending high-density polyethylene, low-density polyethylene and ultrahigh molecular weight polyethylene, casting to form a film, and performing biaxial tension to obtain a polyethylene film; uniformly mixing dimethylbenzene, 3-aminopropyl triethoxysilane and n-hexadecane to form a mixed solvent; adding titanium dioxide nano particles, and stirring for 3 hours to obtain a pre-immersion liquid; heating the pre-immersion liquid to 1110 deg.C, immersing polyethylene film in the pre-immersion liquid for 15 s, taking out, and vacuum drying at 70 deg.C to obtain polyethylene layer.
And 4, step 4: preparing a polyethylene fabric: and (3) placing the base fabric layer on a hot rolling mill, spraying the cellulose polymer dispersion liquid on the surface of the base fabric layer, covering the polyethylene layer, and hot rolling at the temperature of 90 ℃ and under the pressure of 500KPa for 5 minutes to obtain the polyethylene fabric.
In the technical scheme, the raw materials of the flame retardant comprise the following components: by weight, 18 parts of phytic acid, 8 parts of boric acid, 32 parts of urea and 10 parts of glucose. The polyethylene layer is obtained by modifying the surface of a polyethylene film through a pre-dipping solution; the raw materials of the polyethylene film comprise the following components: 16 parts of high-density polyethylene, 70 parts of low-density polyethylene and 12 parts of ultrahigh molecular weight polyethylene. The raw materials of the pre-immersion liquid comprise the following components: 60-80 parts of dimethylbenzene, 8 parts of 3-aminopropyl triethoxysilane, 20 parts of n-hexadecane and 5 parts of titanium dioxide nanoparticles.
Example 4: no pretreatment of the polyethylene film; the rest is the same as in example 1.
Example 5: n-hexadecane is not added; the rest is the same as in example 1.
Example 6: raising the temperature of the pre-soaking solution to 130 ℃; the rest is the same as in example 1.
Example 7: boric acid is not added; the rest is the same as in example 1.
Experiment: the following experiment is carried out on the waterproof and corrosion-resistant polyethylene fabric prepared in the embodiment 1-7: firstly, referring to a standard test method of GB/T5454-1997, the Limit Oxygen Index (LOI) of the polyethylene fabric is detectedA) Judging the flame retardance of the polyethylene fabric; dripping water drops on the prepared fabric, and measuring the water contact angle of the fabric by adopting a video contact angle instrument to obtain hydrophobicity; and the hydrostatic pressure of the fabric is detected by referring to a GB/T4744-2013 standard test method; the waterproof performance of the polyethylene fabric is judged. Thirdly, placing the polyethylene layer prepared in the embodiment 1-7 in a salt fog box, and spraying a sodium chloride solution for 2 hours at 35 ℃; and (3) in a constant temperature and humidity box with the temperature of 40 ℃ and the humidity of 80%, observing whether the surface has pulverization and other conditions to judge the surface corrosion resistance of the polyethylene fabric, wherein the pulverization time is the salt spray time. Fourthly, after the polyethylene fabric is washed for 50 times, the Limit Oxygen Index (LOI) is detected againB) The data obtained are shown in the following table:
examples LOIA/％ Contact Angle/° Hydrostatic pressure/mbar Salt spray time/h LOIB/％
Example 1 34.7 145 56 213 34.2
Example 2 34.2 141 54 208 33.4
Example 3 34.5 143 55 210 33.5
Example 4 32.1 103 42 163 31.2
Example 5 33.6 133 50 201 32.1
Example 6 34.1 140 52 206 33.0
Example 7 32.2 144 55 213 29.5
And (4) conclusion: from the data of examples 1 to 3, it can be seen that: the prepared waterproof corrosion-resistant polyethylene fabric has excellent flame retardance, and the limited oxygen index is more than 34%; the surface is super-hydrophobic, the contact angle reaches more than 140 degrees, and the hydrostatic pressure is more than 50mbar, which shows that the water-proof paint has excellent water resistance; the salt spray resistance time is more than 200h, which shows that the cloth has better corrosion resistance.
The data of comparative example 4 can find that: when polyethylene films were not treated with a pre-dip, all properties were significantly reduced because: the embedding of long paraffin and siloxane in the pretreatment can effectively increase the surface hydrophobicity of the polyethylene fabric, and the flame retardance and the corrosion resistance of the polyethylene fabric can be effectively increased by utilizing the titanium dioxide loaded by the siloxane.
The data of comparative example 5 can find that: without the addition of n-hexadecane, all data had a small reduction in amplitude due to: on one hand, the surface expansion of the polymer can be promoted by the similarity of alkyl and polyethylene molecular chains, so that the interaction between alkyl and polyethylene can be realized, the silane coupling agent can be grafted to the inner layer of the polymer, the grafting rate and the grafting force of the silane coupling agent are increased, and the effect of a compatilizer is achieved.
The data of comparative example 6 can find that: the prepreg temperature increased and the data also decreased slightly due to: the temperature of the prepreg is set to be close to the melting temperature of the low-density polyethylene; the temperature should not be too high, otherwise, solvent molecules will be soaked too much, the polyethylene film will be partially dissolved, and the water resistance and corrosion resistance of the polyethylene layer will be reduced.
The data of comparative example 7 can find that: no addition of boric acid reduces LOIASimultaneous LOIBThe rate of decrease of (a) is increased to 6%, because: boron forms a dense oxide barrier; boric acid and phytic acid effectively increase the washability by chelating and crosslinking glucose, and the lack of boric acid reduces crosslinking sites and covalent sites with cotton cloth, thereby reducing the washability of the flame retardant.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The waterproof corrosion-resistant polyethylene fabric is characterized in that: the polyethylene fabric comprises a base cloth layer, a waterproof bonding layer and a polyethylene layer which are sequentially stacked; the base cloth layer comprises cotton cloth and a flame retardant; the waterproof bonding layer is a cellulose polymer containing long-chain alkyl.
2. The waterproof corrosion-resistant polyethylene fabric according to claim 1, wherein: the raw materials of the flame retardant comprise the following components: 13-18 parts of phytic acid, 5-8 parts of boric acid, 25-32 parts of urea and 5-10 parts of glucose by weight.
3. The waterproof corrosion-resistant polyethylene fabric according to claim 1, wherein: the cellulose polymer is prepared by firstly amido oxidized cellulose and then polymerizing by taking hexamethylene diisocyanate as a cross-linking agent.
4. The waterproof corrosion-resistant polyethylene fabric according to claim 1, wherein: the polyethylene layer is obtained by modifying the surface of a polyethylene film through a pre-dipping solution; the raw materials of the polyethylene film comprise the following components: 8-16 parts of high-density polyethylene, 60-70 parts of low-density polyethylene and 5-12 parts of ultrahigh molecular weight polyethylene.
5. The waterproof corrosion-resistant polyethylene fabric according to claim 4, wherein: the raw materials of the pre-immersion liquid comprise the following components: 60-80 parts of dimethylbenzene, 5-8 parts of 3-aminopropyltriethoxysilane, 10-20 parts of n-hexadecane and 2-5 parts of titanium dioxide nanoparticles.
6. A preparation method of a waterproof corrosion-resistant polyethylene fabric is characterized by comprising the following steps: the method comprises the following steps:
step 1: preparing a base fabric layer: (1) stirring phytic acid, glucose, boric acid and urea solution for reaction to obtain a flame retardant; (2) soaking cotton cloth in the flame retardant, drying, and curing; circularly dipping and curing for 3 times to obtain a base cloth layer;
step 2: preparing a waterproof bonding layer: dissolving oxidized cellulose in deionized water, adding 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride and N-hydroxysuccinimide, and adding N-hexadecylpropionamide solution; carrying out reaction; filtering, washing and dialyzing to obtain amidated cellulose; adding hexamethylene diisocyanate into tetrahydrofuran, reacting, cooling, washing with tetrahydrofuran and dispersing to obtain cellulose polymer dispersion liquid;
and step 3: preparing a polyethylene layer: (1) melting and blending high-density polyethylene, low-density polyethylene and ultrahigh molecular weight polyethylene, casting to form a film, and performing biaxial tension to obtain a polyethylene film; (2) uniformly mixing dimethylbenzene, 3-aminopropyl triethoxysilane and n-hexadecane; adding titanium dioxide nano particles, and mixing to obtain a pre-immersion liquid; (3) immersing the polyethylene film into the pre-immersion liquid, taking out, and drying in vacuum to obtain a polyethylene layer;
and 4, step 4: preparing a polyethylene fabric: and (3) placing the base cloth layer on a hot rolling mill, spraying the cellulose polymer dispersion liquid on the surface of the base cloth layer, covering the polyethylene layer, and hot rolling to obtain the polyethylene fabric.
7. The preparation method of the waterproof and corrosion-resistant polyethylene fabric according to claim 6, characterized in that: in the step 1, the concrete steps are as follows: (1) stirring and mixing phytic acid, glucose and boric acid, and stirring for 1-2 hours at the temperature of 58-65 ℃; adding a urea solution with the concentration of 0.05-0.1 mol/L, and reacting for 6-8 hours at the temperature of 85-95 ℃ to obtain a flame retardant; (2) soaking cotton cloth in a flame retardant, and carrying out ultrasonic treatment for 30-40 minutes at the temperature of 40-50 ℃ in a bath ratio of 1 (18-20); taking out and drying, and curing for 5-10 minutes at the set temperature of 170-175 ℃; and (3) circularly dipping and curing to obtain the base fabric layer.
8. The preparation method of the waterproof and corrosion-resistant polyethylene fabric according to claim 6, characterized in that: in the step 2, the concrete steps are as follows: dissolving oxidized cellulose in deionized water, adding 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride and N-hydroxysuccinimide, setting the pH value to be 5.5-6, and adding N-hexadecylpropionamide solution; adjusting the pH value to 7.5-8, and setting the temperature to 60-70 ℃ for reaction for 8-12 hours; filtering, washing and dialyzing to obtain amidated cellulose; ultrasonically dispersing the cellulose polymer in tetrahydrofuran, adding hexamethylene diisocyanate, reacting for 20-24 hours at the temperature of 60-70 ℃, cooling, washing with tetrahydrofuran and dispersing to obtain cellulose polymer dispersion liquid.
9. The preparation method of the waterproof and corrosion-resistant polyethylene fabric according to claim 6, characterized in that: in the step (3) of the step 3, the concrete steps are as follows: and heating the pre-immersion liquid to 105-110 ℃, immersing the polyethylene film into the pre-immersion liquid for 5-15 seconds, taking out, and carrying out vacuum drying at 60-70 ℃ to obtain the polyethylene layer.
10. The preparation method of the waterproof and corrosion-resistant polyethylene fabric according to claim 6, characterized in that: in step 4, the hot pressing conditions are as follows: the temperature is 70-100 ℃, the pressure is 300-500 KPa, and the time is 2-5 minutes.
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