CN108943271A - A method of improving braiding Lin's grass dyefastness - Google Patents
A method of improving braiding Lin's grass dyefastness Download PDFInfo
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- CN108943271A CN108943271A CN201810559519.1A CN201810559519A CN108943271A CN 108943271 A CN108943271 A CN 108943271A CN 201810559519 A CN201810559519 A CN 201810559519A CN 108943271 A CN108943271 A CN 108943271A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K9/00—Chemical or physical treatment of reed, straw, or similar material
- B27K9/007—Straw
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/025—Controlling the process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/08—Impregnating by pressure, e.g. vacuum impregnation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/02—Staining or dyeing wood; Bleaching wood
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/04—Combined bleaching or impregnating and drying of wood
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
- C08G18/6216—Polymers of alpha-beta ethylenically unsaturated carboxylic acids or of derivatives thereof
- C08G18/622—Polymers of esters of alpha-beta ethylenically unsaturated carboxylic acids
- C08G18/6225—Polymers of esters of acrylic or methacrylic acid
- C08G18/6229—Polymers of hydroxy groups containing esters of acrylic or methacrylic acid with aliphatic polyalcohols
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Coloring (AREA)
Abstract
The invention belongs to weave to use Lin's grass technical field, and in particular to a method of improve braiding Lin's grass dyefastness, including mixed solution preparation, mixed solution processing Lin grass, pigmenting preparation and knitted material preparation.The present invention has the advantage that mixed solution can be modified Lin's grass in the present invention compared with prior art; it can make the organic matter inside Lin's grass in conjunction with mixed solution; in dyeing course; fuel can pass through capillary porosity duct; adhere to its fibre compact; improve dyeing efficiency; cooperate alkali dyeing assistant; the protective film of its lubricating action can be formed on Lin's grass surface; reasonable regulation dyeing condition; Lin's grass molecular density can be made to be in suitable state, the dyeing crock fastness of Lin's grass is improved, meet the coloration requirements of craftwork.
Description
Technical field
The invention belongs to weave to use Lin's grass technical field, and in particular to a kind of side improved braiding and use Lin's grass dyefastness
Method.
Background technique
Lin's grass is a kind of common industrial crops, and the gramineae plant in platymiscium fiber, outer layer is wax powder layer, secondly
It is epidermis, elementary organization, assimilating tissue, fibre bundle, lacuna road, vascular bundle, marrow, a kind of inhomogeneous pore material of monoblock type
Material, is made of, hydrophilic radical hydroxyl rich in, dyestuff in cellulose, hemicellulose cellulose, hemicellulose and lignin
It is settled on the fiber surface after the diffusion of careless cell wall with aqueous solution by Lin's grass capillary channel, so that Lin's grass dyes,
Electric power after stain colored particle is positively charged in the solution for basic dye, and the hydroxyl in Lin's grass fiber makes entirely after ionizing in aqueous solution
Lin's grass fiber is negatively charged, and therefore, ion bond mainly occurs for positively charged basic dye and negatively charged Lin's grass fiber
It closes, color fastness determines by the size of affinity, and Lin's grass is commonly used to weave a straw mat, tatami etc., in order to improve the warp of Lin's grass
Ji value, gradually starts now for weaving various handbags or being made into straw weavings, in order to meet people to color diversity
Demand, to its dyeability, more stringent requirements are proposed, and basic dye is bright in colour, and strong coloring force is with a small amount of dyestuff
Rich and gaudy color can be obtained, but its dye-uptake and dyefastness are poor, in the prior art by adjusting dye liquor pH value, dyeing heat preservation
Temperature, dye dosage, the dosage of electrolyte and dyeing soaking time optimize Lin's grass dye-uptake and crock fastness, but unknown
It is aobvious.
Summary of the invention
The purpose of the present invention is being directed to existing problem, a kind of method for improving braiding and using Lin's grass dyefastness is provided.
The present invention is achieved by the following technical solutions: a method of braiding Lin's grass dyefastness is improved, including
The following contents:
(1) by weight, by 22-28 parts of polyacrylate random copolymer modified polyurethane prepolymer, castor oil 16-20
Part, 5-8 parts of boric acid, 1-3 parts of organic metal carboxylic acid compound, 400 parts of water are to be stirred in 85-95 DEG C in temperature, are mixed
Close solution；
(2) it is lower than 20% to water content for dry under conditions of temperature is 35 DEG C after Lin's grass cleaning after collection, is then submerged in
In mixed solution, is handled under conditions of negative pressure 0.08-0.12MPa 1.5-2.5 hours, be after the completion 65-75 DEG C in temperature
Under the conditions of dry 3-4 hour, obtaining that treated, Lin is careless；
(3) by treated, Lin's grass dyes under conditions of pH is 6.2-6.8, and dye dosage is the 0.1- of Lin's grass weight
0.3%, the bath raio of dyeing is 1:10, further includes dyeing assistant, and the additive amount of dyeing assistant is the 6-10% of dyestuff weight, dye
Color obtained pigmenting after 20-30 minutes；
Dyeing is divided into 4 stages, and the first stage is warming up to 40-42 DEG C with 6-8 DEG C/min of speed, second stage, with 3-4
DEG C/min speed be warming up to 67-75 DEG C, keep the temperature 10 minutes, the phase III is heated up with 1.2-1.8 DEG C/min of heating rate
To 85-90 DEG C, 20 minutes are kept the temperature, fourth stage is cooled to 50 DEG C of heel row clear liquids with 1.6-2.2 DEG C/min of cooling rate；
(4) knitted material obtained by drying after successively being washed Lin's grass after the completion of dyeing, soap, wash.
As further improvement of these options, the dyestuff is middle low temperature disperse dyes, mass concentration 2-4%.
As further improvement of these options, the middle low temperature disperse dyes are dispersion orchid 2BLN.
As further improvement of these options, the polyacrylate random copolymer modified polyurethane prepolymer
The preparation method comprises the following steps: by weight, 40-50 parts of polyether Glycols, 3-5 parts of diisocyanate are mixed, in 80-85 DEG C of condition
Lower heating is reacted 30-40 minutes, and base polyurethane prepolymer for use as is obtained；Then by 45-50 parts of (methyl) acrylate, 6-8 parts (methyl)
Crylic acid hydroxy ester, 60 parts of butanone mixing, heat 4.5-5.5 hours under conditions of 65-75 DEG C, remove butanone, obtain poly- third
Olefin(e) acid ester；Then base polyurethane prepolymer for use as and polyacrylate will be mixed with weight ratio 4-5:1, the item for being 65-75 DEG C in temperature
Under part heating reaction 2-3 hours to get.
As further improvement of these options, the organic metal carboxylic acid compound be dibutyl tin dilaurate,
One kind of stannous octoate, stannous acetate, zinc octoate or isooctyl acid lead.
As further improvement of these options, the dyeing assistant includes the raw material of following parts by weight: sodium sulphate 6-
10 parts, 1-3 parts of anhydrous sodium acetate, 0.8-1.6 parts of calgon, 2-4 parts of fatty alcohol polyoxyethylene ether, 50 parts of water.
As further improvement of these options, it is 5g/L that the condition soaped in the step (4), which is soap powder additive amount,
Bath raio is 1:30, is soaped 10 minutes under conditions of temperature is 70 DEG C；The condition of drying is that 40 points are dried under conditions of 57 DEG C
Clock.
The present invention has the advantage that mixed solution can be modified Lin's grass in the present invention, can make compared with prior art
Organic matter inside Lin's grass is in conjunction with mixed solution, and in dyeing course, fuel can be tight with its fiber by capillary porosity duct
Close attachment improves dyeing efficiency, cooperates alkali dyeing assistant, can form the protective film of its lubricating action on Lin's grass surface, rationally
Regulation dyeing condition, Lin's grass molecular density can be made to be in suitable state, the dyeing crock fastness of Lin's grass is improved, meet technique
The coloration requirements of product.
Specific embodiment
Embodiment 1
A method of improving braiding Lin's grass dyefastness, including the following contents:
(1) by weight, by 25 parts of polyacrylate random copolymer modified polyurethane prepolymer, 18 parts of castor oil, boric acid
6.5 parts, 2 parts of organic metal carboxylic acid compound, 400 parts of water in temperature be to be stirred in 90 DEG C, obtain mixed solution；
(2) it is lower than 20% to water content for dry under conditions of temperature is 35 DEG C after Lin's grass cleaning after collection, is then submerged in
In mixed solution, handled under conditions of negative pressure 0.1MPa 2 hours, drying 3.5 is small under conditions of temperature is 70 DEG C after the completion
When, Lin's grass that obtains that treated；
(3) by treated, Lin's grass dyes under conditions of pH is 6.5, and dye dosage is the 0.2% of Lin's grass weight, dyeing
The bath raio of technique is 1:10, further includes dyeing assistant, and the additive amount of dyeing assistant is the 8% of dyestuff weight, after dyeing 25 minutes
To pigmenting；
Dyeing is divided into 4 stages, and the first stage is warming up to 41 DEG C with 7 DEG C/min of speed, second stage, with 3.5 DEG C/min
Speed be warming up to 70 DEG C, keep the temperature 10 minutes, the phase III is warming up to 88 DEG C with 1.5 DEG C/min of heating rate, heat preservation 20
Minute, fourth stage is cooled to 50 DEG C of heel row clear liquids with 2 DEG C/min of cooling rate；
(4) knitted material obtained by drying after successively being washed Lin's grass after the completion of dyeing, soap, wash.
Wherein, the dyestuff is middle low temperature disperse dyes, mass concentration 3%；The middle low temperature disperse dyes are that dispersion is blue
2BLN。
Wherein, the polyacrylate random copolymer modified polyurethane prepolymer the preparation method comprises the following steps: by weight,
45 parts of polyether Glycols, 4 parts of diisocyanate are mixed, heating reaction 35 minutes, it is pre- to obtain polyurethane under conditions of 82 DEG C
Aggressiveness；Then 48 parts of (methyl) acrylate, 7 parts of (methyl) crylic acid hydroxy esters, 60 parts of butanone are mixed, in 70 DEG C of condition
Lower heating 5 hours, removes butanone, obtains polyacrylate；It then will be by base polyurethane prepolymer for use as and polyacrylate with weight ratio
4.5:1 mixing, temperature be 70 DEG C under conditions of heating reaction 2.5 hours to get.
Wherein, the organic metal carboxylic acid compound is dibutyl tin dilaurate；The dyeing assistant includes following heavy
Measure the raw material of part: 8 parts of sodium sulphate, 2 parts of anhydrous sodium acetate, 1.2 parts of calgon, 3 parts of fatty alcohol polyoxyethylene ether, water 50
Part.
Wherein, the condition soaped in the step (4) is that soap powder additive amount is 5g/L, bath raio 1:30, is 70 in temperature
It soaps under conditions of DEG C 10 minutes；The condition of drying is to dry 40 minutes under conditions of 57 DEG C.
Embodiment 2
A method of improving braiding Lin's grass dyefastness, including the following contents:
(1) by weight, by 22 parts of polyacrylate random copolymer modified polyurethane prepolymer, 20 parts of castor oil, boric acid 5
Part, 3 parts of organic metal carboxylic acid compound, 400 parts of water are to be stirred in 85 DEG C in temperature, obtain mixed solution；
(2) it is lower than 20% to water content for dry under conditions of temperature is 35 DEG C after Lin's grass cleaning after collection, is then submerged in
In mixed solution, handled under conditions of negative pressure 0.08MPa 2.5 hours, drying 3 is small under conditions of temperature is 65 DEG C after the completion
When, Lin's grass that obtains that treated；
(3) by treated, Lin's grass dyes under conditions of pH is 6.8, and dye dosage is the 0.1% of Lin's grass weight, dyeing
The bath raio of technique is 1:10, further includes dyeing assistant, and the additive amount of dyeing assistant is the 10% of dyestuff weight, after dyeing 30 minutes
Obtain pigmenting；
Dyeing is divided into 4 stages, and the first stage is warming up to 40 DEG C with 6 DEG C/min of speed, second stage, with 4 DEG C/min
Speed is warming up to 67 DEG C, keeps the temperature 10 minutes, and the phase III is warming up to 90 DEG C with 1.2 DEG C/min of heating rate, keeps the temperature 20 points
Clock, fourth stage are cooled to 50 DEG C of heel row clear liquids with 2.2 DEG C/min of cooling rate；
(4) knitted material obtained by drying after successively being washed Lin's grass after the completion of dyeing, soap, wash.
Wherein, the dyestuff is middle low temperature disperse dyes, mass concentration 4%；The middle low temperature disperse dyes are that dispersion is blue
2BLN。
Wherein, the polyacrylate random copolymer modified polyurethane prepolymer the preparation method comprises the following steps: by weight,
50 parts of polyether Glycols, 3 parts of diisocyanate are mixed, heating reaction 30 minutes, it is pre- to obtain polyurethane under conditions of 85 DEG C
Aggressiveness；Then 50 parts of (methyl) acrylate, 8 parts of (methyl) crylic acid hydroxy esters, 60 parts of butanone are mixed, in 75 DEG C of condition
Lower heating 5.5 hours, removes butanone, obtains polyacrylate；It then will be by base polyurethane prepolymer for use as and polyacrylate with weight
Than 4:1 mix, temperature be 75 DEG C under conditions of heating reaction 3 hours to get.
Wherein, the organic metal carboxylic acid compound is stannous acetate；The dyeing assistant includes the original of following parts by weight
Material: 10 parts of sodium sulphate, 3 parts of anhydrous sodium acetate, 0.8 part of calgon, 2 parts of fatty alcohol polyoxyethylene ether, 50 parts of water.
Wherein, the condition soaped in the step (4) is that soap powder additive amount is 5g/L, bath raio 1:30, is 70 in temperature
It soaps under conditions of DEG C 10 minutes；The condition of drying is to dry 40 minutes under conditions of 57 DEG C.
Embodiment 3
A method of improving braiding Lin's grass dyefastness, including the following contents:
(1) by weight, by 28 parts of polyacrylate random copolymer modified polyurethane prepolymer, 16 parts of castor oil, boric acid 8
Part, 1 part of organic metal carboxylic acid compound, 400 parts of water are to be stirred in 95 DEG C in temperature, obtain mixed solution；
(2) it is lower than 20% to water content for dry under conditions of temperature is 35 DEG C after Lin's grass cleaning after collection, is then submerged in
In mixed solution, handled under conditions of negative pressure 0.12MPa 1.5 hours, drying 4 is small under conditions of temperature is 75 DEG C after the completion
When, Lin's grass that obtains that treated；
(3) by treated, Lin's grass dyes under conditions of pH is 6.2, and dye dosage is the 0.3% of Lin's grass weight, dyeing
The bath raio of technique is 1:10, further includes dyeing assistant, and the additive amount of dyeing assistant is the 6% of dyestuff weight, and dyeing obtains after twenty minutes
To pigmenting；
Dyeing is divided into 4 stages, and the first stage is warming up to 42 DEG C with 8 DEG C/min of speed, second stage, with 3 DEG C/min
Speed is warming up to 75 DEG C, keeps the temperature 10 minutes, and the phase III is warming up to 85 DEG C with 1.8 DEG C/min of heating rate, keeps the temperature 20 points
Clock, fourth stage are cooled to 50 DEG C of heel row clear liquids with 1.6 DEG C/min of cooling rate；
(4) knitted material obtained by drying after successively being washed Lin's grass after the completion of dyeing, soap, wash.
Wherein, the dyestuff is middle low temperature disperse dyes, mass concentration 2%；The middle low temperature disperse dyes are that dispersion is blue
2BLN。
Wherein, the polyacrylate random copolymer modified polyurethane prepolymer the preparation method comprises the following steps: by weight,
40 parts of polyether Glycols, 5 parts of diisocyanate are mixed, heating reaction 40 minutes, it is pre- to obtain polyurethane under conditions of 80 DEG C
Aggressiveness；Then 45 parts of (methyl) acrylate, 6 parts of (methyl) crylic acid hydroxy esters, 60 parts of butanone are mixed, in 65 DEG C of condition
Lower heating 4.5 hours, removes butanone, obtains polyacrylate；It then will be by base polyurethane prepolymer for use as and polyacrylate with weight
Than 5:1 mix, temperature be 65 DEG C under conditions of heating reaction 2 hours to get.
Wherein, the organic metal carboxylic acid compound is isooctyl acid lead；The dyeing assistant includes the original of following parts by weight
Material: 6 parts of sodium sulphate, 1 part of anhydrous sodium acetate, 1.6 parts of calgon, 2 parts of fatty alcohol polyoxyethylene ether, 50 parts of water.
Wherein, the condition soaped in the step (4) is that soap powder additive amount is 5g/L, bath raio 1:30, is 70 in temperature
It soaps under conditions of DEG C 10 minutes；The condition of drying is to dry 40 minutes under conditions of 57 DEG C.
Control group 1 is set, the process that mixed solution in embodiment 1 is handled is removed, remaining content is constant；Control group is set
2, dyeing phase in embodiment 1 is replaced with, required temperature is warming up to the speed of 3 DEG C/min, temperature-fall period is not necessarily to control,
Remaining content is constant；Control group 3 is set, dyeing assistant in embodiment 1 is removed, remaining content is constant；
Dye-uptake is measured according to spectrophotometry, referring to " GB/T 3920-1997 textile color stability tests rub resistance color jail
Degree ", " GB 251-1995 grey scale for assessing staining of colour " grading；Lin's grass is Lin's grass of Fuyang plantation, after detection
Obtain following result:
Table 1
It can be seen that the dye-uptake in the present invention compared to basic dye by data in table 1 and reached higher level, while it is dry
Crock fastness is all compared with fastness to wet rubbing and is greatly improved using basic dye merely.
Claims (7)
1. a kind of method for improving braiding and using Lin's grass dyefastness, which is characterized in that including the following contents:
(1) by weight, by 22-28 parts of polyacrylate random copolymer modified polyurethane prepolymer, castor oil 16-20
Part, 5-8 parts of boric acid, 1-3 parts of organic metal carboxylic acid compound, 400 parts of water are to be stirred in 85-95 DEG C in temperature, are mixed
Close solution；
(2) it is lower than 20% to water content for dry under conditions of temperature is 35 DEG C after Lin's grass cleaning after collection, is then submerged in
In mixed solution, is handled under conditions of negative pressure 0.08-0.12MPa 1.5-2.5 hours, be after the completion 65-75 DEG C in temperature
Under the conditions of dry 3-4 hour, obtaining that treated, Lin is careless；
(3) by treated, Lin's grass dyes under conditions of pH is 6.2-6.8, and dye dosage is the 0.1- of Lin's grass weight
0.3%, the bath raio of dyeing is 1:10, further includes dyeing assistant, and the additive amount of dyeing assistant is the 6-10% of dyestuff weight, dye
Color obtained pigmenting after 20-30 minutes；
Dyeing is divided into 4 stages, and the first stage is warming up to 40-42 DEG C with 6-8 DEG C/min of speed, second stage, with 3-4
DEG C/min speed be warming up to 67-75 DEG C, keep the temperature 10 minutes, the phase III is heated up with 1.2-1.8 DEG C/min of heating rate
To 85-90 DEG C, 20 minutes are kept the temperature, fourth stage is cooled to 50 DEG C of heel row clear liquids with 1.6-2.2 DEG C/min of cooling rate；
(4) knitted material obtained by drying after successively being washed Lin's grass after the completion of dyeing, soap, wash.
2. a kind of method for improving braiding and using Lin's grass dyefastness as described in claim 1, which is characterized in that during the dyestuff is
Low temperature disperse dyes, mass concentration 2-4%.
3. a kind of method for improving braiding and using Lin's grass dyefastness as claimed in claim 2, which is characterized in that the middle low temperature point
Dissipating dyestuff is dispersion orchid 2BLN.
4. a kind of method for improving braiding and using Lin's grass dyefastness as described in claim 1, which is characterized in that the polyacrylic acid
Ester random copolymer modified polyurethane prepolymer the preparation method comprises the following steps: by weight, by 40-50 parts of polyether Glycols, 3-5 parts
Diisocyanate mixing, heating reaction 30-40 minutes, obtain base polyurethane prepolymer for use as under conditions of 80-85 DEG C；Then by 45-
50 parts of (methyl) acrylate, 6-8 parts of (methyl) crylic acid hydroxy esters, 60 parts of butanone mixing, are heated under conditions of 65-75 DEG C
4.5-5.5 hours, butanone is removed, polyacrylate is obtained；It then will be by base polyurethane prepolymer for use as and polyacrylate with weight ratio
4-5:1 mixing, temperature be 65-75 DEG C under conditions of heating reaction 2-3 hours to get.
5. a kind of method for improving braiding and using Lin's grass dyefastness as described in claim 1, which is characterized in that the organic metal
Carboxylic acid compound is one kind of dibutyl tin dilaurate, stannous octoate, stannous acetate, zinc octoate or isooctyl acid lead.
6. a kind of method for improving braiding and using Lin's grass dyefastness as described in claim 1, which is characterized in that the dyeing assistant
Raw material including following parts by weight: 6-10 parts of sodium sulphate, 1-3 parts of anhydrous sodium acetate, 0.8-1.6 parts of calgon, fatty alcohol
2-4 parts of polyoxyethylene ether, 50 parts of water.
7. a kind of method for improving braiding and using Lin's grass dyefastness as described in claim 1, which is characterized in that the step (4)
In the condition soaped be soap powder additive amount be 5g/L, bath raio 1:30, soap 10 minutes under conditions of temperature is 70 DEG C；Drying
Condition be dried 40 minutes under conditions of 57 DEG C.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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Application publication date: 20181207 |