CN101845744B - Low-temperature scouring and bleaching assistant and preparation method and application thereof - Google Patents
Low-temperature scouring and bleaching assistant and preparation method and application thereof Download PDFInfo
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- CN101845744B CN101845744B CN2010101817952A CN201010181795A CN101845744B CN 101845744 B CN101845744 B CN 101845744B CN 2010101817952 A CN2010101817952 A CN 2010101817952A CN 201010181795 A CN201010181795 A CN 201010181795A CN 101845744 B CN101845744 B CN 101845744B
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Abstract
The invention relates to a low-temperature scouring and bleaching assistant and a preparation method and application thereof. The low-temperature scouring and bleaching assistant is a mixed assistant formed by 25-60 percent by weight of low-temperature oxidation bleaching activating agent and 40-75 percent by weight of matched scouring agent, wherein the low-temperature oxidation bleaching activating agent consists of sodium nonanoyloxy benzene sulfonate, an activating agent promoter, a bleaching promoter and ammonium polycarylate; and the matched scouring agent consists of an emulsifying agent, a penetrating agent, a chelated dispersing agent, a defoaming agent and water. Cellulose fiber unfinished textiles treated by the low-temperature scouring and bleaching assistant have better whiteness, capillary effect, strength and hand feeling than the performances of textiles treated by the traditional process. Compared with the traditional method, the invention can effectively save the consumption of steam and power, reduce the treatment pressure of sewage and reduce the treatment expense of the sewage.
Description
Technical field
The present invention relates to a kind of low-temperature scouring and bleaching assistant and its production and use, be applicable to the pre-treatment of the non-finished product textiles of cellulose fibre, belong to textile printing and dyeing pretreatment technology field.
Background technology
At present, the printing and dyeing assistant industry faces that water price rises steadily, charges for disposing pollutants rise and Export Textiles is subjected to technology barriers, domestic working ability greater than the severe situation of demand, intensified competition, country also requires " unit GDP (gross domestic product) energy resource consumption reduces by 20%, and total emissions of major pollutants reduces 10% " in Eleventh Five-Year Plan simultaneously.Therefore, printing and dyeing mill mainly concentrates on sight the reduction energy consumption, cuts down finished cost, shortens the aspects such as process-cycle and raising end product quality, to improve competitiveness.The printing and dyeing pre-treatment is the key procedure of a high blowdown of high energy consumption, and along with the continuous rising of energy expenditure, the energy cost in the pretreatment procedure has seriously restricted the benefit of enterprise, so energy-conservation short-flow pre-treating process becomes the focus and emphasis of current research.
Conventional pre-treatment Scouring and bleaching process all is to carry out in the high-temperature high-pressure apparatus of 100 ℃ even 135 ℃, time 60-90min scourings and bleaching, consume quantity of steam very large, 1 ton of cotton textiles approximately needs steam 5-6 ton, take about 60% of whole dyeing and finishing steam consumption, in addition, traditional handicraft is because using a large amount of caustic soda, it can generate sodium cellulosate with fibrin reaction, be difficult for washing from fiber, must repeatedly wash after scouringing and bleaching, water consumption is very large, the water consumption of scouringing and bleaching accounts for about 50% of whole dyeing and finishing water consumption, has also increased accordingly the discharge capacity of sewage.
At H
2O
2Add the peroxide activated thing of people in the bleaching bath, can greatly improve H
2O
2The effect of under lower temperature and pH value condition, bleaching, present oxygen floats activator and mainly contains tetraacetyl ethylene diamine (TAED), acyloxy benzene sulfonic acid sodium salt in the ninth of the ten Heavenly Stems (NOBS), tetrem acyl glycosides urea (TAGU), five acetyl glucose (PAG) etc., the mechanism of action is take TAED as example, nucleophilic substitution occurs and generates Peracetic acid anion, Peracetic acid anion ratio H in TAED and HOO-
2O
2Bleaching property is stronger, can produce strong discoloration under low temperature, low pH value condition.In addition, in bleaching process, except destroying natural colouring matter, cotton fiber itself also can sustain damage.The damage of fiber mainly occurs in the bleaching process, is that conventional bleaching or cold bleaching all have certain damage to fiber, but cold bleaching is gentle because of condition, and is little than conventional bleaching to fibre damage.Therefore, the low temperature pre-treatment will obviously be better than conventional pre-treatment to the protective effect of fiber.
Summary of the invention
First purpose of the present invention, be to overcome the problems referred to above, a kind of novel, gentle, easy low-temperature scouring and bleaching assistant of row is provided, thereby can shorten the process time, enhance productivity, save the consumption of steam and electricity, and can alleviate treatment pressure of sewage, reduce the waste water control expense.
Second purpose of the present invention is for a kind of preparation method of low-temperature scouring and bleaching assistant is provided.
The 3rd purpose of the present invention is in order to provide a kind of low-temperature scouring and bleaching assistant to be used for the purposes of fabric.
First purpose of the present invention reaches by following measures:
A kind of low-temperature scouring and bleaching assistant is characterized in that: it is to float the mixed aid that activator and supporting scouring agent consist of by cryogenic oxygen, and the quality percentage composition that cryogenic oxygen is floated activator is 25%～60%, and the quality percentage composition of supporting scouring agent is 40%～75%; Wherein,
1) cryogenic oxygen is floated activator union acyl group benzene sulfonic acid sodium salt, activator promoter, bleaching promoting agent and alkaline agent composition, the quality percentage composition of described material component is respectively: pelargonyl group benzene sulfonic acid sodium salt 40%～60%, activator promoter 5%～20%, bleaching promoting agent 10%～30%, alkaline agent 10%～20%;
2) supporting scouring agent is comprised of emulsifying agent, bleeding agent, chelated dispersants, defoamer and water, the quality percentage composition of described material component part is respectively: emulsifying agent 10%～20%, bleeding agent 5%～10%, chelated dispersants 5%～10%, defoamer 0.1%～0.3%, water 59.7%～79.9%.
First purpose of the present invention can also reach by taking following measure:
One embodiment of the present invention are: float in the material component of activator in cryogenic oxygen, activator promoter can be melamine, dicyandiamide or urea; The bleaching promoting agent can be SODIUM PERCARBONATE or carbamide peroxide; Alkaline agent can be sodium carbonate, potash or solid caustic soda.
One embodiment of the present invention are: in supporting scouring agent: described emulsifying agent can be fatty alcohol-polyoxyethylene ether or isomery alcohol polyoxyethylene ether; Wherein, the C number of described fatty alcohol-polyoxyethylene ether can be 7 or 9 for 10～13, its EO number, and the C number of described isomery alcohol polyoxyethylene ether can be 5 or 7 for 10～13, its EO number; Described bleeding agent can comprise Seconary Alkane Sulphonate Sodium or a-sodium olefin sulfonate; Described chelated dispersants can be natrium citricum or gluconic acid sodium salt; Described defoamer can be conventional silicone defoaming agent.。
One embodiment of the present invention are: the quality percentage composition of each material component can be respectively in the described supporting scouring agent: emulsifying agent 10%～20%, bleeding agent 5%～10%, chelated dispersants 5%～10%, defoamer 0.1%～0.3%, water 64.7%～74.9%.
One embodiment of the present invention are: 1) the cryogenic oxygen quality percentage composition that floats each material component in the activator can be respectively: pelargonyl group benzene sulfonic acid sodium salt 60%, activator promoter 5%, bleaching promoting agent 20%, alkaline agent 15%; 2) the quality percentage composition of each material component can be respectively in the supporting scouring agent: emulsifying agent 10%, bleeding agent 10%, chelated dispersants 5%, defoamer 0.1%, water 74.9%.
One embodiment of the present invention are: 1) the cryogenic oxygen quality percentage composition that floats each material component in the activator can be respectively: pelargonyl group benzene sulfonic acid sodium salt 40%, activator promoter 20%, bleaching promoting agent 30%, alkaline agent 10%; 2) the quality percentage composition of each material component can be respectively in the supporting scouring agent: emulsifying agent 15%, bleeding agent 10%, chelated dispersants 10%, defoamer 0.2%, water 64.8%.
Second purpose of the present invention reaches by following measures:
A kind of preparation method of low-temperature scouring and bleaching assistant, it is characterized in that: configure at first respectively cryogenic oxygen and float activator and supporting scouring agent, then float activator and supporting scouring agent according to the respectively weighing cryogenic oxygen of proportioning of low-temperature scouring and bleaching assistant claimed in claim 1, mixing and stirring namely is re-dubbed low-temperature scouring and bleaching assistant; Wherein, described cryogenic oxygen is floated activator, supporting scouring agent is prepared from respectively by the following method:
1) described cryogenic oxygen is floated the preparation method of activator: the proportioning difference weighing pelargonyl group benzene sulfonic acid sodium salt, activator promoter, bleaching promoting agent, the alkaline agent that float activator by claim 1 or 2 described cryogenic oxygen, then mixing and stirring namely is re-dubbed cryogenic oxygen and floats activator;
2) preparation method of described supporting scouring agent: by proportioning difference weighing emulsifying agent, bleeding agent, chelated dispersants, defoamer, the water of claim 1,3 or 4 described supporting scouring agents, then mixing and stirring namely is re-dubbed supporting scouring agent.
In actual applications, after configuring respectively cryogenic oxygen and floating activator and supporting scouring agent, their are stored separately respectively, during use again by institute's expense and hydrogen peroxide are configured to pretreatment liquid jointly separately.
The 3rd purpose of the present invention can reach by taking following measure:
A kind of purposes of low-temperature scouring and bleaching assistant is characterized in that: be used for the low temperature Scouring and bleaching process of fabric, carry out according to the following steps:
1) adopted bath raio 1: 10, at room temperature fabric, the pretreatment liquid that configures are in proportion added in the dye vat; Wherein, described pretreatment liquid is by 27.5% hydrogen peroxide, 5～7g/L, and claim 1 or 2 described cryogenic oxygen are floated activator 0.5～1.5g/L, claim 1,3 or 4 described supporting scouring agent 1～2g/L, and common configuration forms;
2) parameters is warming up to 75～85 ℃ with 2 ℃/min, insulation operation 40～60min;
3) then use 80 ℃ of hot water wash 5～15min, cold water is cleaned, and oven dry namely makes the fabric through the pre-treatment of low-temperature scouring and bleaching assistant low temperature.
The 3rd purpose of the present invention can also reach by taking following measure:
A kind of embodiment of realization the 3rd purpose of the present invention is: making behind the fabric of low-temperature scouring and bleaching assistant low temperature pre-treatment whiteness, capillary effect, brute force, the feel of test gained fabric.
A kind of embodiment of realization the 3rd purpose of the present invention is: described fabric can be cotton knitted cloth or purified cotton yarns.
The invention has the beneficial effects as follows:
Low-temperature scouring and bleaching assistant of the present invention is applicable to the low temperature Scouring and bleaching process of fabric, the contrast common process, and it has the following advantages:
1, energy savings: scouring and bleaching 100 ℃ of temperature of routine are down to 75～85 ℃, make original 1 ton of cotton used steam of scouringing and bleaching be down to 1.2～3.5 tons from 5～6 tons, save and scouring and bleaching vapour more than 40%, can make printing and dyeing mill always reduce more than 20% with vapour so scouring and bleaching with low temperature.
2, using water wisely: because of the more traditional alkaline oxygen bath of low temperature Scouring and bleaching process amount of caustic soda low, avoided the generation of a large amount of cellulose sodium salts, made washing easier, made original 1 ton of cotton water of scouringing and bleaching be reduced to 30～40 tons from 60 tons, save half, simultaneously also corresponding minimizing of quantity of wastewater effluent.
3, save process time: because washing easily, heat up and temperature fall time minimizing and washing times minimizing, thereby saved process time, generally can make to shorten to process time about 70%, dye-works's time efficiency is improved.
The specific embodiment
Below in conjunction with embodiment content of the present invention is described further.
Specific embodiment 1:
The present embodiment comes the textile double knit grey cloth (32S) of K cryogenic treatment by low-temperature scouring and bleaching assistant.
The described low-temperature scouring and bleaching assistant of the present embodiment, it is to float the mixed aid that activator and supporting scouring agent consist of by cryogenic oxygen, above-mentioned two kinds of auxiliary agents are composed of the following components respectively by weight percentage:
1) cryogenic oxygen is floated activator: pelargonyl group benzene sulfonic acid sodium salt 60%, melamine 5%, SODIUM PERCARBONATE 20%, sodium carbonate 15%.
2) supporting scouring agent: isomery alcohol polyoxyethylene ether 10%, Seconary Alkane Sulphonate Sodium 10%, gluconic acid sodium salt 5%, silicone defoaming agent 0.1%, water 74.9%.
The C number of described isomery alcohol polyoxyethylene ether is that 13, its EO number are 7.
The preparation method of described low-temperature scouring and bleaching assistant: configure at first respectively cryogenic oxygen and float activator and supporting scouring agent, and store separately respectively, during use again by institute's expense and hydrogen peroxide are configured to pretreatment liquid jointly separately; Wherein, cryogenic oxygen is floated activator, supporting scouring agent is prepared from respectively by the following method:
1) to float activator be to be respectively by percentage by weight to described cryogenic oxygen: 60% pelargonyl group benzene sulfonic acid sodium salt, and 5% melamine, 20% SODIUM PERCARBONATE, 15% sodium carbonate, mixing and stirring is composite to be formed;
2) described supporting scouring agent is to be respectively by percentage by weight: 10% isomery alcohol polyoxyethylene ether, and 10% Seconary Alkane Sulphonate Sodium, 5% gluconic acid sodium salt, 0.1% silicone defoaming agent, 74.9% water 7, mixing and stirring is composite to be formed.
Described low-temperature scouring and bleaching assistant is used for the low temperature Scouring and bleaching process of fabric, carries out according to the following steps:
1) adopted bath raio 1: 10, at room temperature fabric, the pretreatment liquid that configures are in proportion added in the dye vat; Wherein, described pretreatment liquid is that cryogenic oxygen is floated activator 1g/L by 27.5% hydrogen peroxide 5g/L, supporting scouring agent 2g/L, and common configuration forms;
2) parameters is warming up to 75～85 ℃ with 2 ℃/min, insulation operation 50min;
3) then use 80 ℃ of hot water wash 10min, cold water is cleaned, and oven dry namely makes the fabric through the pre-treatment of low-temperature scouring and bleaching assistant low temperature;
4) making behind the fabric of low-temperature scouring and bleaching assistant low temperature pre-treatment whiteness, capillary effect, brute force, the feel of test gained fabric.
With reference to table 1, whiteness, capillary effect, bursting strength and the feel of contrast low temperature Scouring and bleaching process and common process, as shown in table 1.As seen from Table 1: the whiteness of low temperature process, capillary effect slightly are worse than common process in the time of 75 ℃, but whiteness, capillary effect all can reach the common process level more than 80 ℃ the time; The bursting strength of low temperature process, feel all are better than common process in the time of 75～85 ℃, and the lower brute force of temperature, feel are better.
Table 1 cotton knitted cloth low temperature Scouring and bleaching process and common process performance comparison
Specific embodiment 2:
The present embodiment comes the two-sided grey cloth of K cryogenic treatment pure cotton knitting (20S) by low-temperature scouring and bleaching assistant.
The described low-temperature scouring and bleaching assistant of the present embodiment, it is to float the mixed aid that activator and supporting scouring agent consist of by cryogenic oxygen, above-mentioned two kinds of auxiliary agents are composed of the following components respectively by weight percentage:
1) cryogenic oxygen is floated activator: pelargonyl group benzene sulfonic acid sodium salt 40%, urea 20%, potassium percarbonate 30%, caustic soda 10%;
2) supporting scouring agent: isomery alcohol polyoxyethylene ether 15%, Seconary Alkane Sulphonate Sodium 10%, gluconic acid sodium salt 10%, silicone defoaming agent 0.2%, water 64.8%.
The C number of described isomery alcohol polyoxyethylene ether is that 13, its EO number are 5.
The preparation method of described low-temperature scouring and bleaching assistant: configure at first respectively cryogenic oxygen and float activator and supporting scouring agent, and store separately respectively, during use again by institute's expense and hydrogen peroxide are configured to pretreatment liquid jointly separately; Wherein, cryogenic oxygen is floated activator, supporting scouring agent is prepared from respectively by the following method:
1) to float activator be to be respectively by percentage by weight to described cryogenic oxygen: 40% pelargonyl group benzene sulfonic acid sodium salt, and 20% urea, 30% potassium percarbonate, 10% caustic soda, mixing and stirring is composite to be formed;
2) supporting scouring agent is to be respectively by percentage by weight: 15% isomery alcohol polyoxyethylene ether, and 10% Seconary Alkane Sulphonate Sodium, 10% gluconic acid sodium salt, 0.2% silicone defoaming agent, 64.8% water, mixing and stirring is composite to be formed.
Described low-temperature scouring and bleaching assistant is used for the low temperature Scouring and bleaching process of fabric, carries out according to the following steps:
1) adopted bath raio 1: 10, at room temperature fabric, the pretreatment liquid that configures are in proportion added in the dye vat; Wherein, described pretreatment liquid is that cryogenic oxygen is floated activator 1g/L by 27.5% hydrogen peroxide 5.6g/L, supporting scouring agent 1g/L, and common configuration forms;
2) parameters is warming up to 80 ℃ with 2 ℃/min, insulation operation 60min;
3) then use 80 ℃ of hot water wash 5min, cold water is cleaned, and oven dry namely makes the fabric through the pre-treatment of low-temperature scouring and bleaching assistant low temperature;
4) make behind the fabric of low-temperature scouring and bleaching assistant low temperature pre-treatment the whiteness of test fabric, capillary effect, feel.
With reference to table 2, whiteness, the capillary effect of contrast low temperature Scouring and bleaching process and common process.As can be seen from Table 2: the whiteness of low temperature process, capillary effect all can reach the level of common process in the time of 80 ℃.
Table 2 cotton knitted cloth low temperature Scouring and bleaching process and common process performance comparison
Specific embodiment 3:
The present embodiment comes the two-sided grey cloth of K cryogenic treatment pure cotton knitting (40S) by low-temperature scouring and bleaching assistant.
The described low-temperature scouring and bleaching assistant of the present embodiment, it is to float the mixed aid that activator and supporting scouring agent consist of by cryogenic oxygen, above-mentioned two kinds of auxiliary agents are composed of the following components respectively by weight percentage:
1) cryogenic oxygen is floated activator: pelargonyl group benzene sulfonic acid sodium salt 50%, dicyandiamide 20%, SODIUM PERCARBONATE 10%, caustic soda 20%;
2) supporting scouring agent: fatty alcohol-polyoxyethylene ether 15%, Seconary Alkane Sulphonate Sodium 8%, natrium citricum 7%, silicone defoaming agent 0.3%, water 69.7%.
The C number of described fatty alcohol-polyoxyethylene ether is that 10, its EO number are 7.
The preparation method of described low-temperature scouring and bleaching assistant: configure at first respectively cryogenic oxygen and float activator and supporting scouring agent, and store separately respectively, during use again by institute's expense and hydrogen peroxide are configured to pretreatment liquid jointly separately; Wherein, cryogenic oxygen is floated activator, supporting scouring agent is prepared from respectively by the following method:
1) to float activator be to be respectively by percentage by weight to described cryogenic oxygen: 50% pelargonyl group benzene sulfonic acid sodium salt, and 20% dicyandiamide, 10% SODIUM PERCARBONATE, 20% caustic soda, mixing and stirring is composite to be formed;
2) described supporting scouring agent is to be respectively by percentage by weight: 15% fatty alcohol-polyoxyethylene ether, and 8% Seconary Alkane Sulphonate Sodium, 7% natrium citricum, 0.3% silicone defoaming agent, 69.7% water, mixing and stirring is composite to be formed.
Described low-temperature scouring and bleaching assistant is used for the low temperature Scouring and bleaching process of fabric, carries out according to the following steps:
1) adopted bath raio 1: 10, at room temperature fabric, the pretreatment liquid that configures are in proportion added in the dye vat; Wherein, described pretreatment liquid is that cryogenic oxygen is floated activator 1.5g/L by 27.5% hydrogen peroxide 5g/L, supporting scouring agent 1.5g/L, and common configuration forms;
2) parameters is warming up to 85 ℃ with 2 ℃/min, insulation operation 40min;
3) then use 80 ℃ of hot water wash 15min, cold water is cleaned, and oven dry namely makes the fabric through the pre-treatment of low-temperature scouring and bleaching assistant low temperature;
4) make behind the fabric of low-temperature scouring and bleaching assistant low temperature pre-treatment whiteness, capillary effect, the feel of test gained fabric.
With reference to table 3, whiteness, the capillary effect of contrast low temperature Scouring and bleaching process and common process.As can be seen from Table 3: the whiteness of low temperature process, capillary effect all can reach the level of common process in the time of 85 ℃.
Table 3 cotton knitted cloth low temperature Scouring and bleaching process and common process performance comparison
Specific embodiment 4:
The present embodiment comes the textile general comb yarn (20S) of K cryogenic treatment by low-temperature scouring and bleaching assistant.
The described low-temperature scouring and bleaching assistant of the present embodiment, it is to float the mixed aid that activator and supporting scouring agent consist of by cryogenic oxygen, above-mentioned two kinds of auxiliary agents are composed of the following components respectively by weight percentage:
1) cryogenic oxygen is floated activator: pelargonyl group benzene sulfonic acid sodium salt 50%, dicyandiamide 15%, carbamide peroxide 15%, sodium carbonate 20%;
2) supporting scouring agent: isomery alcohol polyoxyethylene ether 15%, a-sodium olefin sulfonate 5%, natrium citricum 10%, silicone defoaming agent 0.3%, water 69.7%.
The C number of described isomery alcohol polyoxyethylene ether is that 10, its EO number are 7.
The preparation method of described low-temperature scouring and bleaching assistant: configure at first respectively cryogenic oxygen and float activator and supporting scouring agent, and store separately respectively, during use again by institute's expense and hydrogen peroxide are configured to pretreatment liquid jointly separately; Wherein, cryogenic oxygen is floated activator, supporting scouring agent is prepared from respectively by the following method:
1) to float activator be to be respectively by percentage by weight to described cryogenic oxygen: 50% pelargonyl group benzene sulfonic acid sodium salt, and 15% dicyandiamide, 15% carbamide peroxide, 20% sodium carbonate, mixing and stirring is composite to be formed;
2) supporting scouring agent is to be respectively by percentage by weight: 15% isomery alcohol polyoxyethylene ether, and 5% a-sodium olefin sulfonate, 10% natrium citricum, 0.3% silicone defoaming agent, 69.7% water, mixing and stirring is composite to be formed.
Described low-temperature scouring and bleaching assistant purposes is carried out according to the following steps for being used for the low temperature Scouring and bleaching process of fabric:
1) adopted bath raio 1: 10, at room temperature fabric, the pretreatment liquid that configures are in proportion added in the dye vat; Wherein, described pretreatment liquid is that cryogenic oxygen is floated activator 0.5g/L by 27.5% hydrogen peroxide 7g/L, supporting scouring agent 1.5g/L, and common configuration forms;
2) parameters is warming up to 75 ℃ with 2 ℃/min, insulation operation 45min;
3) then use 80 ℃ of hot water wash 15min, cold water is cleaned, and oven dry namely makes the fabric through the pre-treatment of low-temperature scouring and bleaching assistant low temperature;
4) making behind the fabric of low-temperature scouring and bleaching assistant low temperature pre-treatment, the whiteness of test gained fabric, capillary effect,
Table 4 purified cotton yarns low temperature Scouring and bleaching process and common process performance comparison
| The base yarn | Low temperature is scouringed and bleaching/75 ℃ * 45min | Common process/98 ℃ * 60min | |
| Whiteness | 8.63 | 77.69 | 78.35 |
| Capillary effect/(cm/30min) | 0 | 14.6 | 15.1 |
| Yarn strength/cN | 145.7 | 130.9 | 125.5 |
Specific embodiment 5:
The present embodiment comes K cryogenic treatment pure cotton combed yarn (40S) by low-temperature scouring and bleaching assistant.
The described low-temperature scouring and bleaching assistant of the present embodiment, it is to float the mixed aid that activator and supporting scouring agent consist of by cryogenic oxygen, above-mentioned two kinds of auxiliary agents are composed of the following components respectively by weight percentage:
1) cryogenic oxygen is floated activator: pelargonyl group benzene sulfonic acid sodium salt 60%, urea 10%, carbamide peroxide 20%, sodium carbonate 10%;
2) supporting scouring agent: fatty alcohol-polyoxyethylene ether 20%, a-sodium olefin sulfonate 10%, gluconic acid sodium salt 5%, silicone defoaming agent 0.3%, water 64.7%.
The C number of described fatty alcohol-polyoxyethylene ether is that 12, its EO number are 9.
The preparation method of described low-temperature scouring and bleaching assistant: configure at first respectively cryogenic oxygen and float activator and supporting scouring agent, and store separately respectively, during use again by institute's expense and hydrogen peroxide are configured to pretreatment liquid jointly separately; Wherein, cryogenic oxygen is floated activator, supporting scouring agent is prepared from respectively by the following method:
1) to float activator be to be respectively by percentage by weight to described cryogenic oxygen: 60% pelargonyl group benzene sulfonic acid sodium salt, and 10% urea, 20% carbamide peroxide, 10% sodium carbonate, mixing and stirring is composite to be formed;
2) supporting scouring agent is to be respectively by percentage by weight: 20% fatty alcohol-polyoxyethylene ether, and 10% a-sodium olefin sulfonate, 5% gluconic acid sodium salt, 0.3% silicone defoaming agent, 64.7% water, mixing and stirring is composite to be formed.
Described low-temperature scouring and bleaching assistant is used for the low temperature Scouring and bleaching process of fabric, carries out according to the following steps:
1) adopted bath raio 1: 10, at room temperature fabric, the pretreatment liquid that configures are in proportion added in the dye vat; Wherein, described pretreatment liquid is that cryogenic oxygen is floated activator 1.5g/L by 27.5% hydrogen peroxide 6g/L, supporting scouring agent 1g/L, and common configuration forms;
2) parameters is warming up to 80 ℃ with 2 ℃/min, insulation operation 45min;
3) then use 80 ℃ of hot water wash 15min, cold water is cleaned, and oven dry namely makes the fabric through the pre-treatment of low-temperature scouring and bleaching assistant low temperature;
4) make behind the fabric of low-temperature scouring and bleaching assistant low temperature pre-treatment the whiteness of test fabric, capillary effect, brute force.
With reference to table 5, whiteness, the capillary effect of contrast low temperature Scouring and bleaching process and common process.As can be seen from Table 5: the whiteness of low temperature process, capillary effect all can reach the level of common process in the time of 80 ℃.
Table 5 purified cotton yarns low temperature Scouring and bleaching process and common process performance comparison
| The base yarn | Low temperature is scouringed and bleaching/80 ℃ * 45min | Common process/98 ℃ * 60min | |
| Whiteness | 7.75 | 76.68 | 76.57 |
| Capillary effect/(cm/30min) | 0 | 10.9 | 11.2 |
| Yarn strength/cN | 154.3 | 135.6 | 130.4 |
Claims (7)
1. low-temperature scouring and bleaching assistant is characterized in that: it is to float the mixed aid that activator and supporting scouring agent consist of by cryogenic oxygen, and the quality percentage composition that cryogenic oxygen is floated activator is 25%-60%, and the quality percentage composition of supporting scouring agent is 40%-75%; Wherein,
1) cryogenic oxygen is floated activator union acyl group benzene sulfonic acid sodium salt, activator promoter, bleaching promoting agent and alkaline agent composition, the quality percentage composition of described material component is respectively: pelargonyl group benzene sulfonic acid sodium salt 40%-60%, activator promoter 5%-20%, bleaching promoting agent 10%-30%, alkaline agent 10%-20%;
2) supporting scouring agent is comprised of emulsifying agent, bleeding agent, chelated dispersants, defoamer and water, the quality percentage composition of described material component is respectively: emulsifying agent 10%-20%, bleeding agent 5%-10%, chelated dispersants 5%-10%, defoamer 0.1%-0.3%, water 59.7%-79.9%;
3) float in the material component of activator in cryogenic oxygen, activator promoter is melamine, dicyandiamide or urea; The bleaching promoting agent is SODIUM PERCARBONATE or carbamide peroxide; Alkaline agent is sodium carbonate, potash or solid caustic soda; In the material component of supporting scouring agent, described emulsifying agent is fatty alcohol-polyoxyethylene ether or isomery alcohol polyoxyethylene ether; Wherein, the C number of described fatty alcohol-polyoxyethylene ether is that 10-13 is individual, its EO number is 7 or 9, and the C number of described isomery alcohol polyoxyethylene ether is that 10-13 is individual, its EO number is 5 or 7; Described bleeding agent comprises Seconary Alkane Sulphonate Sodium or a-sodium olefin sulfonate; Described chelated dispersants is natrium citricum or gluconic acid sodium salt; Described defoamer is conventional silicone defoaming agent.
2. a kind of low-temperature scouring and bleaching assistant according to claim 1 is characterized in that:
1) the cryogenic oxygen quality percentage composition that floats each material component in the activator is respectively: pelargonyl group benzene sulfonic acid sodium salt 60%, activator promoter 5%, bleaching promoting agent 20%, alkaline agent 15%;
2) the quality percentage composition of each material component is respectively in the supporting scouring agent: emulsifying agent 10%, bleeding agent 10%, chelated dispersants 5%, defoamer 0.1%, water 74.9%.
3. a kind of low-temperature scouring and bleaching assistant according to claim 1 is characterized in that:
1) the cryogenic oxygen quality percentage composition that floats each material component in the activator is respectively: pelargonyl group benzene sulfonic acid sodium salt 40%, activator promoter 20%, bleaching promoting agent 30%, alkaline agent 10%;
2) the quality percentage composition of each material component is respectively in the supporting scouring agent: emulsifying agent 15%, bleeding agent 10%, chelated dispersants 10%, defoamer 0.2%, water 64.8%.
4. the preparation method of a low-temperature scouring and bleaching assistant, it is characterized in that: configure at first respectively cryogenic oxygen and float activator and supporting scouring agent, then float activator and supporting scouring agent according to the respectively weighing cryogenic oxygen of proportioning of low-temperature scouring and bleaching assistant claimed in claim 1, mixing and stirring namely is re-dubbed low-temperature scouring and bleaching assistant; Wherein, described cryogenic oxygen is floated activator, supporting scouring agent is prepared from respectively by the following method:
1) described cryogenic oxygen is floated the preparation method of activator: the proportioning difference weighing pelargonyl group benzene sulfonic acid sodium salt, activator promoter, bleaching promoting agent, the alkaline agent that float activator by the described cryogenic oxygen of claim 1, then mixing and stirring namely is re-dubbed cryogenic oxygen and floats activator;
2) preparation method of described supporting scouring agent: by proportioning difference weighing emulsifying agent, bleeding agent, chelated dispersants, defoamer, the water of the described supporting scouring agent of claim 1, then mixing and stirring namely is re-dubbed supporting scouring agent.
5. the purposes of a low-temperature scouring and bleaching assistant is characterized in that: be used for the low temperature Scouring and bleaching process of fabric, carry out according to the following steps:
1) adopts bath raio 1:10, at room temperature fabric, the pretreatment liquid that configures are in proportion added in the dye vat; Wherein, described pretreatment liquid is that cryogenic oxygen claimed in claim 1 is floated activator 0.5-1.5 g/L by 27.5% hydrogen peroxide 5-7 g/L, supporting scouring agent 1-2 g/L claimed in claim 1, and common configuration forms;
2) parameters is warming up to 75-85 ℃ with 2 ℃/min, insulation operation 40-60min;
3) then use 80 ℃ of hot water wash 5-15min, cold water is cleaned, and oven dry namely makes the fabric through the pre-treatment of low-temperature scouring and bleaching assistant low temperature.
6. the purposes of a kind of low-temperature scouring and bleaching assistant according to claim 5 is characterized in that: making behind the fabric of low-temperature scouring and bleaching assistant low temperature pre-treatment whiteness, capillary effect, brute force, the feel of test gained fabric.
7. the purposes of a kind of low-temperature scouring and bleaching assistant according to claim 5, it is characterized in that: described fabric is cotton knitted cloth or purified cotton yarns.
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| CN102321970B (en) * | 2011-08-12 | 2013-05-08 | 江苏金辰针纺织有限公司 | Dyeing pretreatment boiling and bleaching process for cotton fabric |
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| CN103304481B (en) * | 2012-03-15 | 2015-07-01 | 广东德美精细化工股份有限公司 | Preparation method of low-temperature oxygen bleaching activator as well as scouring and bleaching formula and method thereof |
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