CN109972411A - A kind of preparation method of yellowing-resistant polyurethane imitation leather coating fabric - Google Patents
A kind of preparation method of yellowing-resistant polyurethane imitation leather coating fabric Download PDFInfo
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- CN109972411A CN109972411A CN201910362320.4A CN201910362320A CN109972411A CN 109972411 A CN109972411 A CN 109972411A CN 201910362320 A CN201910362320 A CN 201910362320A CN 109972411 A CN109972411 A CN 109972411A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0065—Organic pigments, e.g. dyes, brighteners
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
- D06N3/0077—Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/04—Properties of the materials having electrical or magnetic properties
- D06N2209/046—Anti-static
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1678—Resistive to light or to UV
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/28—Artificial leather
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- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Inorganic Chemistry (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The present invention relates to a kind of preparation methods of yellowing-resistant polyurethane imitation leather coating fabric, belong to textile material technical field.The present invention prepares nano zine oxide as anti-yellowing agent using sodium hydroxide and zinc chloride as raw material, in conjunction with ester based quaternary ammonium salt softening agent and the compound of N- dodecyldimethylamine oxide, phosphite ester antioxidant and ultraviolet absorbent UV-531, a kind of yellowing-resistant master batch is prepared by extruding pelletization, the resin based on polyurethane, prepare a kind of yellowing-resistant polyurethane coating, coating uniform is coated on matrix fabric, a kind of yellowing-resistant polyurethane imitation leather coating fabric is obtained after drying；Nano zine oxide has the function of absorbing ultraviolet light；In addition nanoparticle can will act on ultraviolet light thereon and scatter to all directions, to reduce the uitraviolet intensity of direction of illumination；Ester based quaternary ammonium salt softening agent and the compound of N- dodecyldimethylamine oxide can improve the yellowing of fabric, while the softness of fabric is increased.
Description
Technical field
The present invention relates to a kind of preparation methods of yellowing-resistant polyurethane imitation leather coating fabric, belong to textile material technology neck
Domain.
Background technique
In order to meet the needs of people are to cortex fabric, various high-performance leather fabrics come into being.Common imitation leather face
Material is obtained by way of coating, dry coating, wet-process coating and it is transfer coated etc. be common coating mode.Dry method applies
Layer process is simple, but sample feel is poor；The product feel of wet-process coating is preferable, but color is more single；Though and transfer coated
Right manufacture craft is relative complex, but the style of fabric is more various, it is especially transfer coated in foil stamping process, make fabric
Feel, performance get a promotion, therefore leather fabric commonly uses transfer coated be made.
The principal item of coating includes polyurethane coating, and polyurethane is divided into aromatic series according to the type of raw material diisocyanate
Polyurethane and aliphatic polyurethane.Aliphatic polyurethane properties of product are relatively stable, and the performances such as intensity, durability are all preferable,
But price is relatively high；And the performance of aromatic urethane product matches in excellence or beauty with the performance of aliphatic polyurethane product and price is low
Honest and clean, unique defect is that its properties of product is unstable, and especially white or light coloured fabrics are under the action of ultraviolet light in structure
Amine ester bond easily decompose, aoxidize generate quinones chromophoric group, the methylene that is connected with phenyl ring is easily oxidized to and brings it about xanthochromia.
Polyurethane imitation leather shell material is made usually by way of coating, and common coating way includes dry coating, wet process
Coating, transfer coated, foam coating etc. can according to need to select suitable coating way.
Dry coating is the simplest and convenient coating process.Coating agent is homogeneously applied to fabric by spreader
On, then with baking oven etc. by solvent or moisture evaporation, so that coating agent be made to form continuous, tough and tensile film in fabric surface, make
At coated fabric.The technique and equipment of dry coating are simple, are suitable for various coating agents, can obtain soft and full, elastic excellent
Different effect is at present using most coating process.
Wet-process coating only uses unimolecule polyurethane to starch as coating, selects suitable organic solvent, copolymer, which is dissolved in, to be had
Coating adhesive is made in solvent, is handled after coating by coagulating bath, removes solvent, so that copolymer be made to condense, drying coating is knitted
Object, so that copolymer be made to form microporous membrane on the fabric.The coating agent of wet-process coating is mostly solvent type, must be into after coating
The processing of row aqueous solution.
Transfer coatings are that coating agent is coated in chip carrier (paper or item), form it into a continuous, uniform film,
Then binder is applied in film surface, and fabric (or pilled fabric) lamination, after drying and curing, which is stripped, and will apply
Layer agent film (including adhesive layer) is transmitted to fabric from carrier, and also there is the pattern on carrier on the surface of film.Its most of product is
Artificial leather is mainly used for shoes, clothes, luggage and accessory.Common a kind of thermal transfer coating in transfer coated, under the high temperature conditions
Coating slurry in release paper is transferred in base fabric, coated film is solidified into.Wherein most with the performance of the transfer coated fabric of polyurethane
To be excellent, it not only has the look and feel of similar genuine leather fabric, but also there are also the functions such as cold-resistant, wear-resisting, waterproof, therefore extensively
The industries such as general application and weaving, clothes.
In order to solve the problems, such as the xanthochromia of aromatic urethane, researcher makes on the one hand by being modified to polyurethane
Its yellowing resistance can improve, and on the other hand effectively slow down the reaction of its xanthochromia by preferred suitable anti-yellowing agent.Common is anti-
Xanthochromia agent includes light stabilizer, antioxidant etc..Common light stabilizer be divided into ultraviolet absorbing agent, hindered amine light stabilizer,
Ultraviolet light screener and quencher etc..Quencher is more toxic；Inorganic UV screener is generally insoluble in organic solvent, ultraviolet light
Absorbent can convert thermal energy for the ultraviolet light of absorption under conditions of not changing itself, what reduction reacted with polyurethane
Ultraviolet light；Hindered amine light stabilizer is one of present most common light stabilizer, its mode of action mainly passes through capture freely
Outside base, the multiple efficacies such as hydroperoxide decomposition, singlet-oxygen quenching slow down the xanthochromia reaction of polyurethane；And reasonably by the two
After being compounded, due to synergistic effect, whether function and effect or action time all be will be enhanced.
Summary of the invention
The technical problems to be solved by the invention: asking for xanthochromia and aging easily occurs for existing polyurethane imitation leather shell material
Topic, provides a kind of preparation method of yellowing-resistant polyurethane imitation leather coating fabric.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
(1) zinc chloride and deionized water are mixed, hydroxide is added to get mixed liquor A in stirring in water bath processing in mixed liquor A
Sodium continues 20~30min of stirring to get mixed liquid B, mixed liquid B is placed in a centrifuge, centrifugal treating, collects sediment A,
And 3~5min is centrifuged after being washed with deionized precipitating 3~5 times to get sediment B, by sediment B be placed in temperature be 100~
It dries in 120 DEG C of baking oven to constant weight, is cooled to room temperature, grind up to nano-zinc oxide powder；By nano-zinc oxide powder and
Mass fraction is the mixing of 20% cetyl trimethylammonium bromide solution, and ball-milling treatment is placed in temperature to get blend, by blend
Degree is cooled to room temperature to dry in 60~80 DEG C of baking oven to constant weight to get anti-yellowing agent；
(2) anti-yellowing agent, ester based quaternary ammonium salt softening agent, N- dodecyldimethylamine oxide, phosphite ester antioxidant, purple are taken
Ultraviolet absorbers UV-531, by anti-yellowing agent, ester based quaternary ammonium salt softening agent, N- dodecyldimethylamine oxide, phosphite ester
Kind antioxidant, ultraviolet absorbent UV-531 mixing are placed in extruding pelletization in double screw extruder, are cooled to room temperature to get anti-yellowing
Become master batch；
(3) polyurethane, yellowing-resistant master batch, butanone are taken, yellowing-resistant master batch and butanone are mixed, stir process to get Matrix Solution,
Polyurethane is added in Matrix Solution, continues 1~2h of stirring to get yellowing-resistant polyurethane coating；By yellowing-resistant polyurethane coating
It is uniformly coated on matrix fabric, and is dried, be cooled to room temperature to get yellowing-resistant polyurethane imitation leather coating fabric.
Stirring in water bath processing step described in step (1) are as follows: in mass ratio 1: 5 mixes zinc chloride and deionized water,
Temperature is 60~80 DEG C, and revolving speed is 10~15min of stirring in water bath under 800~1000r/min.
Mass ratio described in step (1) between mixed liquor A and sodium hydroxide is 1: 2.
Centrifugal treating step described in step (1) are as follows: mixed liquid B is placed in a centrifuge, revolving speed be 2000~
3~5min is centrifuged under 3000r/min.
Ball-milling treatment step described in step (1) are as follows: nano-zinc oxide powder and mass fraction are by mass ratio 1: 2
The mixing of 20% cetyl trimethylammonium bromide solution, 1~2h of ball milling in the case where revolving speed is 300~500r/min.
Anti-yellowing agent described in step (2), ester based quaternary ammonium salt softening agent, N- dodecyldimethylamine oxide, phosphorous acid
Ratio between esters antioxidant, ultraviolet absorbent UV-531 is respectively as follows: according to parts by weight, weighs 20~30 parts respectively and resists
Xanthochromia agent, 10~15 parts of ester based quaternary ammonium salt softening agents, 5~10 parts of N- dodecyldimethylamine oxide, 8~12 parts of phosphite esters
Kind antioxidant, 5~15 parts of ultraviolet absorbent UV-531s.
Extruding pelletization step described in step (2) are as follows: by anti-yellowing agent, ester based quaternary ammonium salt softening agent, N- dodecyl two
Methyl oxidation amine, phosphite ester antioxidant, ultraviolet absorbent UV-531 mixing are placed in double screw extruder, are in temperature
180~190 DEG C, screw speed is extruding pelletization under 200~220r/min.
Polyurethane described in step (3), yellowing-resistant master batch, the ratio between butanone are respectively as follows: according to parts by weight, respectively
Weigh 40~60 parts of polyurethane, 1~5 part of yellowing-resistant master batch, 40~60 parts of butanone.
Stir process step described in step (3) are as follows: yellowing-resistant master batch and butanone are mixed, low whipping speed is 500~
20~30min is stirred under 600r/min.
Drying process step described in step (3) are as follows: yellowing-resistant polyurethane coating is uniformly coated on matrix fabric, and
It is placed in the baking oven that temperature is 110~120 DEG C and dries to constant weight.
The present invention is compared with other methods, and advantageous effects are:
(1) present invention prepares nano zine oxide as anti-yellowing agent, in conjunction with ester group season using sodium hydroxide and zinc chloride as raw material
Ammonium salt softening agent and the compound of N- dodecyldimethylamine oxide, phosphite ester antioxidant and ultraviolet absorbing agent UV-
531, a kind of yellowing-resistant master batch is prepared by extruding pelletization, the resin based on polyurethane prepares a kind of poly- ammonia of yellowing-resistant
Ester coating, coating uniform is coated on matrix fabric, and a kind of yellowing-resistant polyurethane imitation leather coating fabric is obtained after drying；Nanometer
Zinc oxide can be by refraction, reflection light come shielding ultraviolet rays, it belongs to N-type semiconductor, and the forbidden bandwidth of ZnO is
3.37eV, when by ultraviolet irradiation, the electronics in valence band can absorb ultraviolet light and is excited on conduction band, generates simultaneously
Electron-hole pair, therefore have the function of absorbing ultraviolet light；In addition, the particle size of nano-ZnO is much smaller than the wave of ultraviolet light
Long, nanoparticle can will act on ultraviolet light thereon and scatter to all directions, to reduce the uitraviolet intensity of direction of illumination；
Ester based quaternary ammonium salt softening agent and the compound of N- dodecyldimethylamine oxide can improve the yellowing of fabric, while make face
The softness of material increases；
(2) chief active composition formula of the ester based quaternary ammonium salt as softening agent in the present invention, mainly by single, double and three esters mixed
Object composition is closed, wherein by the most prominent with the softness of dibasic acid esters；Diester quaternary ammonium not only has softness, also quiet with resisting
Electrically, shorten the functions such as drying time, be easy the fabric of washing smooth；Containing one or several length in the structure of softening agent
Alkyl chain, for softening agent Molecular Adsorption in fiber surface, the substance of this backbone can assign textile with soft feel；
In addition, containing groups such as the stronger epoxy group of some reactivities, hydroxyls in soft agent molecule, and can be with ionic forces, quiet
Groups, these groups such as quaternary ammonium salt ion of the electric attraction in conjunction with fabric surface are combined with textile fiber, are made it have excellent
Good softness, while these softening agents also have antistatic, waterproof, anti-recontamination, and it is equivalent to improve lubricity, tearing brute force
Fruit；Weaken the yellowing phenomenon of quaternary ammonium salt softening agent by being compounded with surfactant, is primarily due to such surface
Activating agent has weak reproducibility group, after being compounded with cationic softener, arranges onto fabric, week reduction group
The oxidative phenomena occurred when can effectively inhibit in the processing to fabric of ester based quaternary ammonium salt softening agent achievees the purpose that inhibit xanthochromia；
(3) main function of phosphorous acid ester antioxidant of the present invention is hydroperoxide decomposition, when certain density hydroperoxidation
After object generates, free-radical oxidation reaction will be quickly propelled, therefore phosphite antioxidant is most important to the inhibition of aging；Together
When, phosphite antioxidant has good color protective capability, can improve the processing temperature of polymer；Ultraviolet absorbing agent
UV-531 can consumingly absorbing wavelength be 240~340nm ultraviolet light.
Specific embodiment
In mass ratio 1: 5 mixes zinc chloride and deionized water, is 60~80 DEG C in temperature, revolving speed is 800~1000r/
Sodium hydroxide is added to get mixed liquor A, in mass ratio 1: 2 in 10~15min of stirring in water bath in mixed liquor A under min, continues to stir
20~30min is mixed to get mixed liquid B, mixed liquid B is placed in a centrifuge, is centrifuged 3 in the case where revolving speed is 2000~3000r/min
~5min collects sediment A, and is centrifuged 3~5min after being washed with deionized precipitating 3~5 times to get sediment B, will precipitate
Object B is placed in the baking oven that temperature is 100~120 DEG C and dries to constant weight, is cooled to room temperature, and grinds up to nano-zinc oxide powder；
In mass ratio 1: 2 mixes nano-zinc oxide powder and mass fraction for 20% cetyl trimethylammonium bromide solution, in revolving speed
It is 1~2h of ball milling under 300~500r/min to get blend, blend is placed in dry in the baking oven that temperature is 60~80 DEG C
To constant weight, it is cooled to room temperature to get anti-yellowing agent；According to parts by weight, 20~30 parts of anti-yellowing agents, 10~15 parts are weighed respectively
Ester based quaternary ammonium salt softening agent, 5~10 parts of N- dodecyldimethylamine oxide, 8~12 parts of phosphite ester antioxidants, 5~15
Part ultraviolet absorbent UV-531, by anti-yellowing agent, ester based quaternary ammonium salt softening agent, N- dodecyldimethylamine oxide, phosphorous
Acid esters kind antioxidant, ultraviolet absorbent UV-531 mixing are placed in double screw extruder, are 180~190 DEG C in temperature, screw rod
Revolving speed is extruding pelletization under 200~220r/min, is cooled to room temperature to get yellowing-resistant master batch；According to parts by weight, it weighs respectively
40~60 parts of polyurethane, 1~5 part of yellowing-resistant master batch, 40~60 parts of butanone mix yellowing-resistant master batch and butanone, in stirring speed
Degree is that 20~30min is stirred under 500~600r/min to get Matrix Solution, and polyurethane is added in Matrix Solution, continues to stir
1~2h is to get yellowing-resistant polyurethane coating；Yellowing-resistant polyurethane coating is uniformly coated on matrix fabric, temperature is placed in
To dry in 110~120 DEG C of baking ovens to constant weight, it is cooled to room temperature to get yellowing-resistant polyurethane imitation leather coating fabric.
Zinc chloride and deionized water are mixed, hydroxide is added to get mixed liquor A in stirring in water bath processing in mixed liquor A
Sodium continues to stir 20min to get mixed liquid B, mixed liquid B is placed in a centrifuge, centrifugal treating, collects sediment A, be used in combination
Sediment B is placed in the baking oven that temperature is 100 DEG C and does to get sediment B by centrifugation 3min after deionized water washing precipitating 3 times
It is dry to be cooled to room temperature to constant weight, it grinds up to nano-zinc oxide powder；It is 2,0%0 by nano-zinc oxide powder and mass fraction
Blend is placed in the baking oven that temperature is 60 DEG C by the mixing of six alkyl trimethyl ammonium bromide solution, ball-milling treatment to get blend
Drying is cooled to room temperature to constant weight to get anti-yellowing agent；Take anti-yellowing agent, ester based quaternary ammonium salt softening agent, N- dimethyl
Base amine oxide, phosphite ester antioxidant, ultraviolet absorbent UV-531, by anti-yellowing agent, ester based quaternary ammonium salt softening agent, N- ten
Dialkyl dimethyl amine oxide, phosphite ester antioxidant, ultraviolet absorbent UV-531 mixing are placed in double screw extruder
Extruding pelletization is cooled to room temperature to get yellowing-resistant master batch；Polyurethane, yellowing-resistant master batch, butanone are taken, by yellowing-resistant master batch and fourth
Polyurethane is added to get Matrix Solution in ketone mixing, stir process in Matrix Solution, continues to stir 1h to get the poly- ammonia of yellowing-resistant
Ester coating；Yellowing-resistant polyurethane coating is uniformly coated on matrix fabric, and is dried, is cooled to room temperature to get anti-yellowing
Become polyurethane imitation leather coating fabric.Stirring in water bath processing step are as follows: in mass ratio 1: 5 mixes zinc chloride and deionized water,
Temperature is 60 DEG C, and revolving speed is stirring in water bath 10min under 800r/min.Mass ratio between mixed liquor A and sodium hydroxide is 1: 2.
Centrifugal treating step are as follows: mixed liquid B is placed in a centrifuge, is centrifuged 3min in the case where revolving speed is 2000r/min.Ball-milling treatment step
Are as follows: in mass ratio 1: 2 mixes nano-zinc oxide powder and mass fraction for 20% cetyl trimethylammonium bromide solution,
Revolving speed is ball milling 1h under 300r/min.Anti-yellowing agent, ester based quaternary ammonium salt softening agent, N- dodecyldimethylamine oxide, phosphorous
Ratio between acid esters kind antioxidant, ultraviolet absorbent UV-531 is respectively as follows: according to parts by weight, weigh respectively 20 parts it is anti-yellowing
Become agent, 10 parts of ester based quaternary ammonium salt softening agents, 5 parts of N- dodecyldimethylamine oxide, 8 parts of phosphite ester antioxidants, 5 parts of purples
Ultraviolet absorbers UV-531.Extruding pelletization step are as follows: by anti-yellowing agent, ester based quaternary ammonium salt softening agent, N- dodecyl dimethyl
Amine oxide, phosphite ester antioxidant, ultraviolet absorbent UV-531 mixing are placed in double screw extruder, are 180 in temperature
DEG C, screw speed is extruding pelletization under 200r/min.Polyurethane, yellowing-resistant master batch, the ratio between butanone are respectively as follows: by weight
Number meter weighs 40 parts of polyurethane, 1 part of yellowing-resistant master batch, 40 parts of butanone respectively.Stir process step are as follows: by yellowing-resistant master batch
It is mixed with butanone, low whipping speed is to stir 20min under 500r/min.It is dried step are as follows: by yellowing-resistant polyurethane coating
It is uniformly coated on matrix fabric, is placed in the baking oven that temperature is 110 DEG C and dries to constant weight.
Zinc chloride and deionized water are mixed, hydroxide is added to get mixed liquor A in stirring in water bath processing in mixed liquor A
Sodium continues to stir 25min to get mixed liquid B, mixed liquid B is placed in a centrifuge, centrifugal treating, collects sediment A, be used in combination
Sediment B is placed in the baking oven that temperature is 110 DEG C and does to get sediment B by centrifugation 4min after deionized water washing precipitating 4 times
It is dry to be cooled to room temperature to constant weight, it grinds up to nano-zinc oxide powder；It is 2,0%0 by nano-zinc oxide powder and mass fraction
Blend is placed in the baking oven that temperature is 70 DEG C by the mixing of six alkyl trimethyl ammonium bromide solution, ball-milling treatment to get blend
Drying is cooled to room temperature to constant weight to get anti-yellowing agent；Take anti-yellowing agent, ester based quaternary ammonium salt softening agent, N- dimethyl
Base amine oxide, phosphite ester antioxidant, ultraviolet absorbent UV-531, by anti-yellowing agent, ester based quaternary ammonium salt softening agent, N- ten
Dialkyl dimethyl amine oxide, phosphite ester antioxidant, ultraviolet absorbent UV-531 mixing are placed in double screw extruder
Extruding pelletization is cooled to room temperature to get yellowing-resistant master batch；Polyurethane, yellowing-resistant master batch, butanone are taken, by yellowing-resistant master batch and fourth
Polyurethane is added to get Matrix Solution in ketone mixing, stir process in Matrix Solution, continues to stir 1h to get the poly- ammonia of yellowing-resistant
Ester coating；Yellowing-resistant polyurethane coating is uniformly coated on matrix fabric, and is dried, is cooled to room temperature to get anti-yellowing
Become polyurethane imitation leather coating fabric.Stirring in water bath processing step are as follows: in mass ratio 1: 5 mixes zinc chloride and deionized water,
Temperature is 70 DEG C, and revolving speed is stirring in water bath 12min under 900r/min.Mass ratio between mixed liquor A and sodium hydroxide is 1: 2.
Centrifugal treating step are as follows: mixed liquid B is placed in a centrifuge, is centrifuged 4min in the case where revolving speed is 2500r/min.Ball-milling treatment step
Are as follows: in mass ratio 1: 2 mixes nano-zinc oxide powder and mass fraction for 20% cetyl trimethylammonium bromide solution,
Revolving speed is ball milling 1h under 400r/min.Anti-yellowing agent, ester based quaternary ammonium salt softening agent, N- dodecyldimethylamine oxide, phosphorous
Ratio between acid esters kind antioxidant, ultraviolet absorbent UV-531 is respectively as follows: according to parts by weight, weigh respectively 25 parts it is anti-yellowing
Become agent, 12 parts of ester based quaternary ammonium salt softening agents, 8 parts of N- dodecyldimethylamine oxide, 10 parts of phosphite ester antioxidants, 10 parts
Ultraviolet absorbent UV-531.Extruding pelletization step are as follows: by anti-yellowing agent, ester based quaternary ammonium salt softening agent, N- dimethyl
Base amine oxide, phosphite ester antioxidant, ultraviolet absorbent UV-531 mixing are placed in double screw extruder, are in temperature
185 DEG C, screw speed is extruding pelletization under 210r/min.Polyurethane, yellowing-resistant master batch, the ratio between butanone be respectively as follows: by
Parts by weight meter weighs 50 parts of polyurethane, 3 parts of yellowing-resistant master batches, 50 parts of butanone respectively.Stir process step are as follows: by yellowing-resistant
Master batch and butanone mixing, low whipping speed are to stir 25min under 550r/min.It is dried step are as follows: by yellowing-resistant polyurethane
Coating uniform is coated on matrix fabric, is placed in the baking oven that temperature is 115 DEG C and is dried to constant weight.
Zinc chloride and deionized water are mixed, hydroxide is added to get mixed liquor A in stirring in water bath processing in mixed liquor A
Sodium continues to stir 30min to get mixed liquid B, mixed liquid B is placed in a centrifuge, centrifugal treating, collects sediment A, be used in combination
Sediment B is placed in the baking oven that temperature is 120 DEG C and does to get sediment B by centrifugation 5min after deionized water washing precipitating 5 times
It is dry to be cooled to room temperature to constant weight, it grinds up to nano-zinc oxide powder；It is 2,0%0 by nano-zinc oxide powder and mass fraction
Blend is placed in the baking oven that temperature is 80 DEG C by the mixing of six alkyl trimethyl ammonium bromide solution, ball-milling treatment to get blend
Drying is cooled to room temperature to constant weight to get anti-yellowing agent；Take anti-yellowing agent, ester based quaternary ammonium salt softening agent, N- dimethyl
Base amine oxide, phosphite ester antioxidant, ultraviolet absorbent UV-531, by anti-yellowing agent, ester based quaternary ammonium salt softening agent, N- ten
Dialkyl dimethyl amine oxide, phosphite ester antioxidant, ultraviolet absorbent UV-531 mixing are placed in double screw extruder
Extruding pelletization is cooled to room temperature to get yellowing-resistant master batch；Polyurethane, yellowing-resistant master batch, butanone are taken, by yellowing-resistant master batch and fourth
Polyurethane is added to get Matrix Solution in ketone mixing, stir process in Matrix Solution, continues to stir 2h to get the poly- ammonia of yellowing-resistant
Ester coating；Yellowing-resistant polyurethane coating is uniformly coated on matrix fabric, and is dried, is cooled to room temperature to get anti-yellowing
Become polyurethane imitation leather coating fabric.Stirring in water bath processing step are as follows: in mass ratio 1: 5 mixes zinc chloride and deionized water,
Temperature is 80 DEG C, and revolving speed is stirring in water bath 15min under 1000r/min.Mass ratio between mixed liquor A and sodium hydroxide is 1: 2.
Centrifugal treating step are as follows: mixed liquid B is placed in a centrifuge, is centrifuged 5min in the case where revolving speed is 3000r/min.Ball-milling treatment step
Are as follows: in mass ratio 1: 2 mixes nano-zinc oxide powder and mass fraction for 20% cetyl trimethylammonium bromide solution,
Revolving speed is ball milling 2h under 500r/min.Anti-yellowing agent, ester based quaternary ammonium salt softening agent, N- dodecyldimethylamine oxide, phosphorous
Ratio between acid esters kind antioxidant, ultraviolet absorbent UV-531 is respectively as follows: according to parts by weight, weigh respectively 30 parts it is anti-yellowing
Become agent, 15 parts of ester based quaternary ammonium salt softening agents, 10 parts of N- dodecyldimethylamine oxide, 12 parts of phosphite ester antioxidants, 15
Part ultraviolet absorbent UV-531.Extruding pelletization step are as follows: by anti-yellowing agent, ester based quaternary ammonium salt softening agent, N- dodecyl two
Methyl oxidation amine, phosphite ester antioxidant, ultraviolet absorbent UV-531 mixing are placed in double screw extruder, are in temperature
190 DEG C, screw speed is extruding pelletization under 220r/min.Polyurethane, yellowing-resistant master batch, the ratio between butanone be respectively as follows: by
Parts by weight meter weighs 60 parts of polyurethane, 5 parts of yellowing-resistant master batches, 60 parts of butanone respectively.Stir process step are as follows: by yellowing-resistant
Master batch and butanone mixing, low whipping speed are to stir 30min under 600r/min.It is dried step are as follows: by yellowing-resistant polyurethane
Coating uniform is coated on matrix fabric, is placed in the baking oven that temperature is 120 DEG C and is dried to constant weight.
Reference examples: the yellowing-resistant polyurethane imitation leather coating fabric of Dongguan company production.
The yellowing-resistant polyurethane imitation leather coating fabric that embodiment and reference examples are prepared is detected, specific detection is such as
Under:
Ultraviolet permeability: sample is tested into its transmitance under ultraviolet light spectrophotometer, measurement wavelength is 200~400nm.
Color difference measurement: xanthochromia treated sample being tested with color measurement and color match instrument, measures its whiteness, calculate its with not
Xanthochromia handles the difference of sample, and resulting value is smaller, shows that color variation is smaller, xanthochromia degree is smaller；Before xanthochromia is calculated by formula
The color difference expected below, and according to GB/T1766-2008 " ranking method of paint and varnish coating aging " evaluate discoloration grade, 0
Grade indicates no discoloration, 5 grades of expression serious discolorations, and the more big then xanthochromia degree of series is bigger.
Specific test result such as table 1.
1 performance characterization contrast table of table
| Detection project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Reference examples |
| Ultraviolet permeability/% | 95.6 | 92.3 | 96.1 | 56.1 |
| Whiteness is poor | 5.83 | 6.40 | 7.87 | 109.51 |
| Change colour grade/grade | 1 | 1 | 2 | 5 |
As shown in Table 1, kraft inner paper interlaminar strength prepared by the present invention is high, bond strength with higher, plucking speed
Degree is fast, and surface strength is high, and phenomena such as being less prone to scaling, fall off, while whiteness is high, and floating phenomenon is less prone to after printing.
Claims (10)
1. a kind of preparation method of yellowing-resistant polyurethane imitation leather coating fabric, it is characterised in that specific preparation step are as follows:
(1) zinc chloride and deionized water are mixed, hydroxide is added to get mixed liquor A in stirring in water bath processing in mixed liquor A
Sodium continues 20~30min of stirring to get mixed liquid B, mixed liquid B is placed in a centrifuge, centrifugal treating, collects sediment A,
And 3~5min is centrifuged after being washed with deionized precipitating 3~5 times to get sediment B, by sediment B be placed in temperature be 100~
It dries in 120 DEG C of baking oven to constant weight, is cooled to room temperature, grind up to nano-zinc oxide powder；By nano-zinc oxide powder and
Mass fraction is the mixing of 20% cetyl trimethylammonium bromide solution, and ball-milling treatment is placed in temperature to get blend, by blend
Degree is cooled to room temperature to dry in 60~80 DEG C of baking oven to constant weight to get anti-yellowing agent；
(2) anti-yellowing agent, ester based quaternary ammonium salt softening agent, N- dodecyldimethylamine oxide, phosphite ester antioxidant, purple are taken
Ultraviolet absorbers UV-531, by anti-yellowing agent, ester based quaternary ammonium salt softening agent, N- dodecyldimethylamine oxide, phosphite ester
Kind antioxidant, ultraviolet absorbent UV-531 mixing are placed in extruding pelletization in double screw extruder, are cooled to room temperature to get anti-yellowing
Become master batch；
(3) polyurethane, yellowing-resistant master batch, butanone are taken, yellowing-resistant master batch and butanone are mixed, stir process to get Matrix Solution,
Polyurethane is added in Matrix Solution, continues 1~2h of stirring to get yellowing-resistant polyurethane coating；By yellowing-resistant polyurethane coating
It is uniformly coated on matrix fabric, and is dried, be cooled to room temperature to get yellowing-resistant polyurethane imitation leather coating fabric.
2. a kind of preparation method of yellowing-resistant polyurethane imitation leather coating fabric according to claim 1, it is characterised in that: step
Suddenly stirring in water bath processing step described in (1) are as follows: in mass ratio 1: 5 mixes zinc chloride and deionized water, temperature be 60~
80 DEG C, revolving speed is 10~15min of stirring in water bath under 800~1000r/min.
3. a kind of preparation method of yellowing-resistant polyurethane imitation leather coating fabric according to claim 1, it is characterised in that: step
Suddenly the mass ratio described in (1) between mixed liquor A and sodium hydroxide is 1: 2.
4. a kind of preparation method of yellowing-resistant polyurethane imitation leather coating fabric according to claim 1, it is characterised in that: step
Suddenly centrifugal treating step described in (1) are as follows: mixed liquid B is placed in a centrifuge, is centrifuged in the case where revolving speed is 2000~3000r/min
3~5min.
5. a kind of preparation method of yellowing-resistant polyurethane imitation leather coating fabric according to claim 1, it is characterised in that: step
Suddenly ball-milling treatment step described in (1) are as follows: nano-zinc oxide powder and mass fraction are 20% cetyl by mass ratio 1: 2
The mixing of trimethylammonium bromide solution, 1~2h of ball milling in the case where revolving speed is 300~500r/min.
6. a kind of preparation method of yellowing-resistant polyurethane imitation leather coating fabric according to claim 1, it is characterised in that: step
Suddenly anti-yellowing agent, ester based quaternary ammonium salt softening agent described in (2), N- dodecyldimethylamine oxide, phosphite ester antioxidant,
Ratio between ultraviolet absorbent UV-531 is respectively as follows: according to parts by weight, weigh respectively 20~30 parts of anti-yellowing agents, 10~
15 parts of ester based quaternary ammonium salt softening agents, 5~10 parts of N- dodecyldimethylamine oxide, 8~12 parts of phosphite ester antioxidants, 5
~15 parts of ultraviolet absorbent UV-531s.
7. a kind of preparation method of yellowing-resistant polyurethane imitation leather coating fabric according to claim 1, it is characterised in that: step
Suddenly extruding pelletization step described in (2) are as follows: by anti-yellowing agent, ester based quaternary ammonium salt softening agent, N- dodecyldimethylamine oxide,
Phosphite ester antioxidant, ultraviolet absorbent UV-531 mixing are placed in double screw extruder, are 180~190 DEG C in temperature,
Screw speed is extruding pelletization under 200~220r/min.
8. a kind of preparation method of yellowing-resistant polyurethane imitation leather coating fabric according to claim 1, it is characterised in that: step
Suddenly polyurethane, yellowing-resistant master batch described in (3), the ratio between butanone are respectively as follows: according to parts by weight, weigh 40~60 respectively
Part polyurethane, 1~5 part of yellowing-resistant master batch, 40~60 parts of butanone.
9. a kind of preparation method of yellowing-resistant polyurethane imitation leather coating fabric according to claim 1, it is characterised in that: step
Suddenly stir process step described in (3) are as follows: mix yellowing-resistant master batch and butanone, low whipping speed is under 500~600r/min
Stir 20~30min.
10. a kind of preparation method of yellowing-resistant polyurethane imitation leather coating fabric according to claim 1, it is characterised in that:
Drying process step described in step (3) are as follows: yellowing-resistant polyurethane coating is uniformly coated on matrix fabric, is placed in temperature
To dry in 110~120 DEG C of baking ovens to constant weight.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110592939A (en) * | 2019-09-16 | 2019-12-20 | 苏州联胜化学有限公司 | Thermal yellowing resistant soft sheet and synthesis method thereof |
| CN111610140A (en) * | 2020-05-20 | 2020-09-01 | 固克节能科技股份有限公司 | Yellowing resistance test method of emulsion for exterior wall building coating |
-
2019
- 2019-04-30 CN CN201910362320.4A patent/CN109972411A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110592939A (en) * | 2019-09-16 | 2019-12-20 | 苏州联胜化学有限公司 | Thermal yellowing resistant soft sheet and synthesis method thereof |
| CN111610140A (en) * | 2020-05-20 | 2020-09-01 | 固克节能科技股份有限公司 | Yellowing resistance test method of emulsion for exterior wall building coating |
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