CN110699950A - Preparation and application methods of solid scouring and bleaching agent for rayon fabric - Google Patents
Preparation and application methods of solid scouring and bleaching agent for rayon fabric Download PDFInfo
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- CN110699950A CN110699950A CN201911076245.1A CN201911076245A CN110699950A CN 110699950 A CN110699950 A CN 110699950A CN 201911076245 A CN201911076245 A CN 201911076245A CN 110699950 A CN110699950 A CN 110699950A
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- 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
- D06M11/73—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 carbon or compounds thereof
- D06M11/76—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 carbon or compounds thereof with carbon oxides or carbonates
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
- D06L4/12—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen combined with specific additives
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
- D06L4/13—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen using inorganic agents
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- 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
- D06M11/32—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 oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/50—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 oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with hydrogen peroxide or peroxides of metals; with persulfuric, permanganic, pernitric, percarbonic acids or their salts
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- 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
- D06M11/77—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 silicon or compounds thereof
- D06M11/79—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 silicon or compounds thereof with silicon dioxide, silicic acids or their salts
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- 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
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- 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
- D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
- D06M13/188—Monocarboxylic acids; Anhydrides, halides or salts thereof
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- 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
- D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
- D06M13/207—Substituted carboxylic acids, e.g. by hydroxy or keto groups; Anhydrides, halides or salts thereof
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- 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
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- 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
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Abstract
The invention discloses a preparation and application method of a solid-state scouring and bleaching agent for rayon fabric, which belongs to the technical field of textile printing and dyeing and is characterized in that the solid-state granular scouring and bleaching agent comprises 40 ~ 60 parts by mass of solid alkaline agent, 15 ~ 25 parts by mass of solid oxidant, 15 ~ 25 parts by mass of solid activator and 10 ~ 20 parts by mass of liquid surfactant, 1 ~ 4g/L of the solid scouring and bleaching agent is taken, the solid scouring and bleaching agent is used for treating rayon fabric at the temperature of 60 ~ 80 ℃ and the bath ratio of 1: 5 ~ 15 after scouring and bleaching treatment is carried out on rayon fabric for 15 ~ 35 minutes, conventional water washing and dehydration are carried out, and drying is completed.
Description
Technical Field
The invention relates to a preparation method and an application process of a scouring and bleaching agent for rayon fabrics, belonging to the technical field of textile printing and dyeing.
Background
The viscose fiber has both physical and chemical structures of cotton fiber and supermolecular structure similar to synthetic fiber, so that the viscose fiber has excellent moisture and heat conductivity and is widely used as underwear fabric with one-way moisture conductivity and cool comfort, however, due to low polymerization degree (DP about 250 ~ 500) and special supermolecular structure (skin core layer), the viscose fiber has lower wet strength (about 1/3) than the cotton fiber, the rayon fabric is easy to break and deform in dyeing and finishing processing, and therefore, the dyeing and finishing method of the rayon fabric has stronger specificity.
The conventional scouring and bleaching of the rayon fabric generally adopts high-temperature alkali-oxygen treatment, and the scouring and bleaching process is completed by the steps of neutralization, deoxidization, washing, drying and the like after the fabric is treated. During scouring and bleaching of the rayon woven fabric, desizing, scouring and bleaching are generally finished by a padding scouring and bleaching liquid post-stacking method. Because the rayon warp contains the sizing agent with higher proportion, the rayon warp needs to adopt the sodium hydroxide with higher concentration, can better finish desizing and scouring with the help of the permeation scouring agent, and simultaneously utilizes the hydrogen peroxide to destroy the pigment in the viscose fiber for bleaching; scouring and bleaching the rayon knitted fabric by adopting an impregnation method, wherein an alkaline agent adopts soda and a permeation scouring agent to finish scouring, and meanwhile, pigment in viscose fiber is damaged by hydrogen peroxide to bleach. However, under alkaline conditions, because the energy barrier for decomposing and releasing bleaching active species by hydrogen peroxide is high, the good bleaching effect can be exerted only at about 100 ℃, high-temperature scouring and bleaching not only causes high energy consumption of the process but also increases production cost, and under high-temperature alkaline conditions, viscose fibers can be swelled violently, a large amount of alkali and hydrogen peroxide are adsorbed inside the fibers, after bleaching is completed, in order to ensure that the strength and dyeing color of fabrics are not affected, acid washing, multiple water washing and oxygen removing processes are required to remove the alkali and hydrogen peroxide in the fibers respectively, and water consumption, emission and production cost are increased.
In recent years, due to the pressure of energy and environmental protection, numerous low-temperature alkaline-oxygen bleaching technologies have emerged. Activators or catalysts are incorporated into existing alkaline-oxygen bleaching systems. The activator or catalyst can effectively reduce the decomposition activation energy of the hydrogen peroxide so that the hydrogen peroxide can generate bleached active species at a lower temperature, and the active species are divided into two categories of organic activators and metal enzyme catalysts from the action mechanism. The organic activator mainly comprises amides and cyanides, and the metal mimic enzyme catalyst mainly comprises phthalocyanine complexes, porphyrin complexes, nitrogen-containing macrocyclic complexes, Saltren complexes, Schiff base complexes and the like. Researches show that the activating agent and the catalyst have the advantages of reducing the bleaching temperature of hydrogen peroxide, reducing strength loss, enabling fabrics to have soft handfeel and the like when being used for oxygen bleaching of cotton fabrics. However, the improvement of the methods and the technologies is based on cotton fiber fabrics, and no literature report on the preparation and application of the low-temperature oxygen bleaching agent for the rayon (viscose) fabrics is found at present.
Disclosure of Invention
The invention aims to reduce the scouring and bleaching temperature of the rayon fabric, avoid the working procedure of neutralization and deoxidization, save energy, reduce emission and reduce the influence of scouring and bleaching on the quality of strength, dyeing color light, hand feeling and the like of the rayon fabric. The solid scouring agent is assembled by adopting a dispersion composite means and an alkaline agent, an oxidant and an activating agent, is used for scouring and bleaching cotton fabrics at low temperature, and can enable the activating agent and the oxidant to generate bleached active species together at lower temperature and alkalinity so as to realize low-temperature high-efficiency scouring and bleaching. The scouring and bleaching process has low working temperature and high oxidant utilization rate, the concentration of alkali and oxidant contained in viscose fiber is low, two steps of neutralization and deoxidization in the conventional process are eliminated, water consumption is saved, environmental pollution is reduced, the problems of high process energy consumption, hard fabric hand feeling, low fabric strength and the like caused by high-temperature alkali oxygen are avoided, and the purposes of saving energy, reducing emission and improving the quality and the practicability of the rayon fabric are achieved.
In order to solve the technical problems, the invention discloses a preparation method and an application method of a solid scouring agent, which comprises the following specific steps:
(1) preparing a solid scouring and bleaching agent, namely weighing 40 ~ parts by mass of a component A, 15 ~ parts by mass of a component B, 15 ~ parts by mass of a component C and 10 ~ parts by mass of a component D, crushing and uniformly mixing A, B, C components at 30 ~ ℃ for 2 ~ hours on a crushing granulator, and adding the component D for rotary granulation to obtain a granular solid scouring and bleaching agent;
(2) the method for scouring and bleaching the rayon fabric comprises the steps of applying the solid scouring and bleaching agent prepared in the step (1) to a scouring and bleaching process of the rayon fabric, wherein the solid scouring and bleaching agent is 1 ~ 4g/L, the temperature is 60 ~ 80 ℃, the time is 15 ~ 35 minutes, and the bath ratio is 1: 5 ~ 15;
(1) the component A is one or more solid substances of anhydrous sodium carbonate, sodium silicate, sodium acetate and sodium citrate;
(1) the component B is characterized by one or more solid substances of anhydrous sodium percarbonate, sodium perborate and sodium persulfate;
(1) the component C is characterized by one or more solid substances of urea, cyanoacetylurea, dicyandiamide and cyanamide;
(1) the component D is a liquid surfactant, and has a chemical structure characterized by one or more of AEO-9 (condensate of C10 ~ C12 aliphatic alcohol and ethylene oxide), 1306, 1309 (condensate of C13 isomeric alcohol and ethylene oxide), XP70 and XP90 (condensate of C10 isomeric alcohol and ethylene oxide);
(2) the form characteristics of the rayon fabric comprise rayon knitted fabric, rayon/cotton knitted fabric, modal knitted fabric, rayon elastic (tensile frame) fabric and the like;
(2) the water washing is conventional water washing, and the washing is carried out for 1 ~ 2 times at 50 ~ 80 ℃;
(2) the dehydration is conventional dehydration, and can be performed by adopting a centrifuge or an open width water calender;
(2) the drying is conventional drying, and can be hot air tentering drying or heat setting machine drying.
Has the advantages that:
(1) the solid scouring and bleaching agent adopted by the invention is prepared by mixing an alkaline agent, an oxidant, an activator and a surfactant, organically compounding and granulating the mixture into the solid scouring and bleaching agent, has stable property during storage, is simple in material melting operation during application, improves the production efficiency, stabilizes the product quality, and can release bleaching active species at a lower temperature by using a treatment solution consisting of the alkaline agent, the oxidant and the activator so as to achieve the aim of scouring and bleaching at a low temperature;
(2) the low-temperature scouring and bleaching temperature is lower than the conventional high-temperature scouring and bleaching temperature (about 100 ℃), so that the problems of high energy consumption of the conventional process, withered color light, hard hand feeling, low strength and the like of the fabric are solved; when scouring and bleaching at low temperature, the swelling degree of the rayon fiber is obviously reduced, and the adsorption capacity of the rayon fiber to alkali and bleaching agent is reduced, so that two process steps of neutralization and deoxidization are omitted, and the water consumption and discharge are reduced. The technical scheme provided by the invention has the advantages of saving energy, reducing emission and improving the quality and the practical performance of the rayon fabric.
Detailed Description
The present invention is further illustrated by the following examples.
Example 1:
the fabric types are as follows: rayon knitted fabric (130 g/m)2）
Preparing a solid scouring and bleaching agent: 20 g of weighed sodium carbonate, 20 g of sodium silicate, 25 g of sodium percarbonate and 25 g of urea are put into a dry crushing granulator, crushed and uniformly mixed for 4 hours at 30 ℃, then added with AEO-910 g of liquid surfactant and granulated in a rotating way to obtain granular solid scouring agent;
scouring and bleaching the fabric: the prepared solid scouring and bleaching agent is used for scouring and bleaching rayon knitted fabrics, the solid scouring and bleaching agent is 3 g/L, the bath ratio is 1: 15, preserving heat for 35 minutes at the temperature of 60 ℃, and washing, dehydrating and drying the treated fabric.
Example 2:
the fabric types are as follows: rayon knitted fabric (150 g/m)2）
Preparing a solid scouring and bleaching agent: putting 25 g of weighed sodium silicate, 25 g of sodium acetate, 20 g of sodium percarbonate, 13 g of urea and 7g of cyanoacetylurea into a dry crushing granulator, crushing and uniformly mixing for 2 hours at 40 ℃, and then putting 130910g of liquid surfactant into the granulator for rotary granulation to obtain granular solid scouring agent;
scouring and bleaching the fabric: the prepared solid scouring and bleaching agent is used for scouring and bleaching rayon knitted fabrics, the solid scouring and bleaching agent is 2 g/L, the bath ratio is 1: and 5, preserving heat for 15 minutes at the temperature of 80 ℃, and washing, dehydrating and drying the treated fabric.
Example 3:
the fabric types are as follows: modal knitted fabric (150 g/m)2）
Preparing a solid scouring and bleaching agent: putting 40 g of weighed sodium silicate, 20 g of sodium citrate, 10g of sodium percarbonate, 5g of sodium perborate, 10g of urea and 5g of dicyandiamide into a dry crushing granulator, crushing and uniformly mixing for 4 hours at 30 ℃, and then putting 95 g of liquid surface active agent AEO and 13065 g of liquid surface active agent for rotary granulation to obtain a granular solid scouring agent;
scouring and bleaching the fabric: the prepared solid scouring and bleaching agent is used for scouring and bleaching rayon knitted fabrics, the solid scouring and bleaching agent is 1g/L, the bath ratio is 1: 10, preserving heat for 35 minutes at the temperature of 70 ℃, and washing, dehydrating and drying the treated fabric.
Example 4:
the fabric types are as follows: rayon/cotton knitted fabric (180 g/m)2）
Preparing a solid scouring and bleaching agent: putting 25 g of weighed sodium acetate, 25 g of sodium citrate, 10g of sodium perborate, 5g of sodium persulfate and 15 g of cyanamide into a dry crushing granulator, crushing and uniformly mixing for 4 hours at 30 ℃, and then putting liquid surface active agents AEO-910 g and XP 7010 g for rotary granulation to obtain a granular solid scouring agent;
scouring and bleaching the fabric: the prepared solid scouring and bleaching agent is used for scouring and bleaching rayon knitted fabrics, the solid scouring and bleaching agent is 4g/L, the bath ratio is 1: 15, preserving heat for 35 minutes at the temperature of 60 ℃, and washing, dehydrating and drying the treated fabric.
Example 5:
the fabric types are as follows: rayon rack knitted fabric (160 g/m)2）
Preparing a solid scouring and bleaching agent: putting 25 g of weighed sodium carbonate, 25 g of sodium silicate, 7.5g of sodium persulfate, 7.5g of sodium percarbonate, 10g of urea and 5g of cyanamide into a dry crushing granulator, crushing and uniformly mixing for 2 hours at 30 ℃, and then putting 130610 g of liquid surfactant and XP 9010 g for rotary granulation to obtain a granular solid scouring agent;
scouring and bleaching the fabric: the prepared solid scouring and bleaching agent is used for scouring and bleaching rayon knitted fabrics, the solid scouring and bleaching agent is 2 g/L, the bath ratio is 1: and 8, preserving heat for 20 minutes at the temperature of 80 ℃, and washing, dehydrating and drying the treated fabric.
Example 6:
the fabric types are as follows: rayon rack knitted fabric (180 g/m)2）
Preparing a solid scouring and bleaching agent: 30 g of weighed sodium carbonate, 25 g of sodium citrate, 15 g of sodium percarbonate, 5g of dicyandiamide and 10g of cyanamide are put into a dry crushing granulator, crushed and uniformly mixed for 4 hours at 40 ℃, and then liquid surface active agents AEO-97.5 g and XP707.5 g are put into the granulator for rotary granulation to obtain granular solid scouring agents;
scouring and bleaching the fabric: the prepared solid scouring and bleaching agent is used for scouring and bleaching rayon knitted fabrics, the solid scouring and bleaching agent is 3 g/L, the bath ratio is 1: and 5, carrying out heat preservation treatment for 25 minutes at the temperature of 60 ℃, and washing, dehydrating and drying the treated fabric.
Comparative example 1:
the fabric types are as follows: rayon knitted fabric (230 g)/m2）
Scouring and bleaching the fabric: by adopting the traditional high-temperature alkali-oxygen scouring and bleaching process, 3 g/L of 30% hydrogen peroxide, 2 g/L of soda ash, 1g/L of scouring agent, 1g/L of hydrogen peroxide stabilizer and 1: and 15, carrying out heat preservation treatment for 30 minutes at the temperature of 98 ℃, neutralizing the treated fabric, deoxidizing, washing with water, dehydrating and drying.
Table 1 properties of the rayon knit obtained in examples 1 to 6, energy consumption of the process, and water consumption.
As can be seen from Table 1, the whiteness of the knitted rayon fabric obtained in examples 1 to 6 reaches the level of comparative example 1, the strength of the fabric is better than that of comparative example 1, and the energy consumption and water consumption of examples 1 to 6 are about 40 to 50 percent of those of comparative example 1.
Claims (6)
1. A preparation and application method of a solid scouring and bleaching agent for rayon fabrics is characterized in that:
(1) preparing a solid scouring and bleaching agent, namely crushing and uniformly mixing 40 ~ parts of component A, 15 ~ parts of component B, 15 ~ parts of component C and 10 ~ parts of component D at room temperature for 2 ~ hours at the temperature of 30 ~ ℃ by using a crushing and granulating machine, and then adding the component D for rotary granulation to obtain a granular solid scouring and bleaching agent;
(2) the method for scouring and bleaching the rayon fabric comprises the step of applying the solid scouring and bleaching agent prepared in the step (1) to scouring and bleaching the rayon fabric, wherein the solid scouring and bleaching agent is 1 ~ 4g/L, the solid scouring and bleaching agent is used for scouring and bleaching the rayon fabric at the temperature of 60 ~ 80 ℃ and the bath ratio of 1: 5 ~ 15, and the scouring and bleaching process is completed after scouring and bleaching the rayon fabric for 15 ~ 35 minutes by conventional water washing, dewatering and drying.
2. The component A of claim 1 is an alkaline agent, and the chemical structure of the agent is characterized by one or more solid substances of anhydrous sodium carbonate, sodium silicate, sodium acetate and sodium citrate.
3. The component B as claimed in claim 1, which is an oxidant and has a chemical structure characterized by one or more solid substances selected from anhydrous sodium percarbonate, sodium perborate, and sodium persulfate.
4. The component C as claimed in claim 1, wherein the chemical structure of the activator is one or more solid substances selected from urea, cyanoacetylurea, dicyandiamide and cyanamide.
5. The component D of claim 1, which is a liquid surfactant having a chemical structure characterized by one or more of AEO-9 (a condensate of a C10 ~ C12 aliphatic alcohol and ethylene oxide), 1306, 1309 (a condensate of a C13 isomeric alcohol and ethylene oxide), XP70, and XP90 (a condensate of a C10 isomeric alcohol and ethylene oxide).
6. The rayon fabric as set forth in claim 2, wherein the fabric types include rayon knit, rayon/cotton knit, modal knit, and rayon stretch (draw frame) fabric.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111733022A (en) * | 2020-07-21 | 2020-10-02 | 何结平 | Cleaning agent for printing and dyeing soaping and preparation method thereof |
| CN112126532A (en) * | 2020-09-25 | 2020-12-25 | 诸暨市华都联和印花有限公司 | Printing process of rayon fabric |
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| CN101487184A (en) * | 2009-02-17 | 2009-07-22 | 宁波广源纺织品有限公司 | Low-temperature scouring and bleaching adjuvant composition and method for producing the same |
| CN102704259A (en) * | 2012-06-25 | 2012-10-03 | 河北宁纺集团有限责任公司 | Low-temperature scouring and bleaching agent and application thereof |
| CN103061104A (en) * | 2012-12-14 | 2013-04-24 | 日华化学研发（上海）有限公司 | One dosage type low temperature scouring and bleaching agent and application thereof |
-
2019
- 2019-11-06 CN CN201911076245.1A patent/CN110699950B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0976867A1 (en) * | 1998-07-31 | 2000-02-02 | Clariant (France) S.A. | Process for finishing a textile and finishing baths |
| CN101487184A (en) * | 2009-02-17 | 2009-07-22 | 宁波广源纺织品有限公司 | Low-temperature scouring and bleaching adjuvant composition and method for producing the same |
| CN102704259A (en) * | 2012-06-25 | 2012-10-03 | 河北宁纺集团有限责任公司 | Low-temperature scouring and bleaching agent and application thereof |
| CN103061104A (en) * | 2012-12-14 | 2013-04-24 | 日华化学研发（上海）有限公司 | One dosage type low temperature scouring and bleaching agent and application thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111733022A (en) * | 2020-07-21 | 2020-10-02 | 何结平 | Cleaning agent for printing and dyeing soaping and preparation method thereof |
| CN112126532A (en) * | 2020-09-25 | 2020-12-25 | 诸暨市华都联和印花有限公司 | Printing process of rayon fabric |
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