CN103485151A - Cold-pad-batch pre-treatment process of chemical fiber shell fabric - Google Patents

Abstract

The invention relates to a cold-pad-batch pre-treatment process of a chemical fiber shell fabric. The process comprises the following steps: padding a gray fabric of the chemical fiber shell fabric by adopting an evenness calender; then cold-padding the padded gray fabric of the chemical fiber shell fabric for 40-55 hours under a condition of 35-40 DEG C, wherein the padding liquor per litter in the padding liquor used in padding contains 98-102g of a caustic soda liquid, 1.8-2.2g of hydrogen peroxide, 1.8-2.2g of a deoxidizing desizing agent TF-127K, 0.4-0.6g of an efficient refining agent TF-188 and 0.4-0.6g of an alkali peeling penetrant TF-107, and the caustic soda liquid is sodium hydroxide solution with the mass concentration of 32%. The process provided by the invention has the economical and environment-friendly effects, is short in production flow, and has the advantages of simplicity in process, small equipment investment, low energy consumption, small occupying area and the like.

Description

A kind of Cold pad-batch pretreatment of chemical fiber plus material

Technical field

The present invention relates to a kind of Cold pad-batch pretreatment of chemical fiber plus material, belong to chemical fiber plus material dyeing and finishing processing technique field.

Background technology

Along with the development of national economy, dyeing be take for a long time and is developed natural resources and gratuitously utilize the style of economic increase that environment is outstanding feature more and more to contradict with sustainable development.Country clearly proposes 2015 in " 12 " planning, and printing and dyeing industry value added energy-output ratio reduced by 20% than 2010, and unit industrial added value water discharge capacity reduced by 30% than 2010, and discharge of major pollutant descended 10% than 2010.In whole dyeing and printing process link, the pretreatment procedure wastewater flow rate accounts for 55～60% left and right of waste water total amount, at present, in process of textile production, destarch is polluted has become one of maximum pollution sources, therefore carries out environmental protection, energy-conservation, clean destarch technology has real economic benefit and environmental benefit.

The pre-treatment desizing is the vital links of printing and dyeing, the principle of the desizing of existing chemical fiber plus material is: in high heat alkali liquid, the synthetic slurries such as the natural slurry such as starch and converted starch, carboxymethyl cellulose and PVA and PVC class, swelling occurs, change collosol state into from gel state, with the adhesion of fiber, fluff, again through mechanism, just easily from fabric, split away off, in water-washing process, the slurry of these dissolvings is just by eccysis, and this technique must cause the increase of pre-treatment water to form the high pollution to environment.Therefore, be necessary to design a kind of new pre-treatment process that is applied to chemical fiber plus material.

Summary of the invention

The object of the invention is to provide a kind of Cold pad-batch pretreatment of chemical fiber plus material.

For achieving the above object, the technical solution used in the present invention is: a kind of Cold pad-batch pretreatment of chemical fiber plus material, adopt evenness calender to be padded processing to described chemical fiber plus material grey cloth, then will be through the chemical fiber plus material grey cloth that pads processing under 35～40 ℃ of conditions, cold dome 40～55 hours; Describedly pad padding in treatment fluid every liter and padding treatment fluid and contain 98～102 gram liquid caustic soda, 1.8～2.2 gram hydrogen peroxide, 1.8～2.2 gram oxidation desizing agent TF-127K, 0.4～0.6 gram high-efficiency refining agent TF-188,0.4～0.6 gram alkali decrement penetrant t F-107 of process using; Described liquid caustic soda is the sodium hydroxide solution that mass concentration is 32%.

Preferred technical scheme is: described padding processed padding in treatment fluid every liter and padding treatment fluid and contain 100 gram liquid caustic soda, 2 gram hydrogen peroxide, 2 gram oxidation desizing agent TF-127K, 0.5 gram high-efficiency refining agent TF-188,0.5 gram alkali decrement penetrant t F-107 of using; Described liquid caustic soda is the sodium hydroxide solution that mass concentration is 32%.

Because technique scheme is used, the present invention compared with prior art has following advantages and effect:

1, technique of the present invention is a kind of economic environmental protection and the shorter technique of production procedure, change the traditional pre-treatment of chemical fiber plus material fabric and quantitatively throw cylinder batch production pattern, change innovatively the semicontinuous production model of normal temperature into, there is the advantages such as technique is simple, equipment investment is few, energy consumption is low, take up an area less, emission reduction effect is remarkable.

2, process conditions of the present invention are relatively gentle, while mainly utilizing cold dome, fabric is carried out to alkali decrement to a certain degree and the dirt surface tension that the expanded decomposition of slurry makes to stick on fiber is reduced, reduced the molecule adhesion between foreign particle and fabric, dirt, slurry and grease are separated and are scattered in emulsification in sink to remove, therefore, two kinds of techniques all have good soil release performance.

The specific embodiment

Below in conjunction with embodiment, the invention will be further described:

Method of testing:

One, whiteness, according to GB/T8245-1987 " the objective ranking method of textiles whiteness ".

The detection method of two, destarch effect, the cation dyes colouring: adopt cation dyes 2GL red, 0.2%(o.w.f), bath raio 1:40, pH value 4.5,50 ℃ of process conditions, 10min, washing, watch the cloth cover shade after oven dry, cloth cover is redder shows that the cloth cover residual slurry is more, otherwise fewer.

Three, the mensuration of dye uptake, used ultraviolet-visible spectrophotometer to measure the absorbance of dyestuff in the maximum absorption wave strong point, and calculate the dye uptake of dyestuff according to following formula.

E=(A0-A1)/A0×100%

In formula: E is dye uptake; A0 is blank dye liquor absorbance; A1 is the staining solution absorbance.

Four, the inhomogeneity sign of DYED FABRICS.

Randomly draw 10 different points dying on sample, the K/S value of testing respectively them, then according to the mathematical statistics principle, calculate respectively mean value, extreme difference and relative standard deviation (Sr), is used for characterizing the level-dyeing property of DYED FABRICS.Extreme difference, relative deviation are less, and level-dyeing property is better.Correlation formula is as follows:

$\left(\stackrel{\‾}{K/S}\right)=1/n\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{(k/s)}_i$ $\mathrm{Sr}=\sqrt{\frac{\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{\left[\frac{{(k/s)}_i}{(k/s)}\right]}^2}{n-1}}$

In formula: (k/s) _ithe k/s value that-maximum absorption wave strong point is measured for the i time.

the k/s value of-i point and the standard deviation of mean value.

The K/S value of each point of Sr-and the standard deviation of mean value.

Embodiment: a kind of Cold pad-batch pretreatment of chemical fiber plus material

A kind of Cold pad-batch pretreatment of chemical fiber plus material, adopt evenness calender to be padded processing to described chemical fiber plus material grey cloth, then will be through the chemical fiber plus material grey cloth that pads processing under 38 ℃ of condition, and cold dome 48 hours; Describedly pad padding in treatment fluid every liter and padding treatment fluid and contain 100 gram liquid caustic soda, 2 gram hydrogen peroxide, 2 gram oxidation desizing agent TF-127K, 0.5 gram high-efficiency refining agent TF-188,0.5 gram alkali decrement penetrant t F-107 of process using; Described liquid caustic soda is the sodium hydroxide solution that mass concentration is 32%.

Comparative Examples: existing conventional machine cylinder refinery practice, the instrument of processing step and use is same as the prior art, the prescription for the treatment of liquid of its use is to contain 15 gram liquid caustic soda (32%), 1 gram oxidation desizing agent TF-127K, 0.5 gram sodium phosphate trimer, temperature: 120 ℃, temperature retention time: 40min in every liter for the treatment of fluid.

The reagent source used in embodiment and Comparative Examples: liquid caustic soda (32%), hydrogen peroxide and sodium phosphate trimer are commercially available prod.Oxidation desizing agent TF-127K, high-efficiency refining agent TF-188, chelated dispersants TF-510C and alkali decrement penetrant t F-107 are purchased from development of evil in febrile disease chemical industry.Disperse blue TERASILLF, disperse yellow TERASILLF, disperse red TERASILLF, Disperse Leveler UNIVADINETOP steps chemical industry purchased from Hensel.

The object of processing in embodiment and Comparative Examples and chemical fiber plus material grey cloth are: the imitative memory of fabric 50D warp-wise: 50D/72F (FDY), 8 sth. made by twisting; Broadwise: 50D/72F (FDY), 8 sth. made by twisting; 820/10cm * 480/10cm; Grammes per square metre 82g/m ², door width 168cm.

The product that embodiment and Comparative Examples make after tested after, result is as follows:

One, whiteness and soil release performance contrast

The contrast of table 1 fabric whiteness

Technique	Whiteness value	Whiteness value	Whiteness value	Whiteness value
					?	On	In	Under	On average
Embodiment	77.9	78.7	78.8	78.5
					Comparative Examples	78.2	79.0	78.8	78.7

As can be seen from Table 1, Comparative Examples is substantially similar to the embodiment whiteness, and the Comparative Examples whiteness slightly is better than embodiment.The liquid caustic soda of Comparative Examples and auxiliary agent are stronger to the saponification of slurry, grease, and the expanded level of fiber is better relatively, and, in the washing stage, when in cylinder, fabric is by nozzle, are subject to sufficient drip washing, and on fabric, impurity easily comes off from cloth cover.And the Comparative Examples process conditions are relatively gentle, while mainly utilizing cold dome, fabric is carried out to alkali decrement to a certain degree and to the expanded decomposition of slurry with utilize the cavitation of oscillator high frequency oscillation and the disperse, emulsification, washing and the depolymerization that cause, the dirt surface tension that makes to stick on fiber reduces, reduced the molecule adhesion between foreign particle and fabric, dirt, slurry and grease are separated and are scattered in emulsification in sink to remove, therefore, two kinds of techniques all have good soil release performance.

Two, two kinds of process energy consumption contrasts

Table 2: contrast with water consumption:

Table 3: contrast with electric consumption:

Table 4: steam consumption contrast:

Table 5: contrast with consumption of coal:

Table 6: each energy fractional energy savings contrast table

The energy used	Cold dome open width energy saving technology rate
		Water	68.27%
Electricity	59.51%
		Steam	44.41%
Conversion kilogram mark coal	56.14%

Remarks: the textile industry standard FZ/T01002-2010 that (1) above data are announced with reference to the Ministry of Industry and Information Technology of the People's Republic of China (PRC).

(2) above-mentioned fabrics is 40-70g/m ², the door width be below 1.7 meters, every hundred meters calculating.

(3) steam used in above-mentioned technique, electricity, water are all rolled over for standard coal calculating.

From table 2～table 6, embodiment technique has great advantage than Comparative Examples technique at saving water, economize on electricity, joint steam and aspect economizing on coal, and meets national energy-saving and reduces discharging and enterprise's cleaner production requirement.

Three, two kinds of technique waste water COD contrasts

Table 7: COD value of waste water contrast

As can be seen from Table 7, embodiment technique, due to mild condition, is used the liquid caustic soda relative concentration higher, and COD value of waste water is higher, but, by actual production, the COD value embodiment technique of dividing on every meter cloth is starkly lower than Comparative Examples technique, is a kind of technique of more environmental protection.

Four, destarch effect

Adopt the slurry content of cation dyes colouring qualitative determination cloth cover.Dye completely, washing, dry, observe the cloth cover shade.Cloth cover is redder, shows that the cloth cover residual slurry is more, otherwise fewer.

Embodiment technique is compared with Comparative Examples technique, has similar destarch effect, is mainly to have utilized the 1. effect of TF-127K, makes slurry generation oxidation, emulsification degraded until molecular chain rupture, and solubility increases.2. the emulsion dispersion effect of TF-188A prevents the cohesion of the little molecule slurry of solution tank, increases dispersive property, prevents from that slurry is counter to be stained with.3. utilize the osmosis of TF-107, make destarch auxiliary agent and liquid caustic soda more easily be penetrated into fibrous inside, be beneficial to destarch and reduced the consumption of liquid caustic soda.Therefore guarantee the removal of textile sizing material, met the demand of processing.

Five, absorbance and dye uptake

It is also the effective ways of check pre-treatment destarch effect that the Color of the fabric after pre-treatment is contrasted, the terylene super fine fabric is after destarch, more conventional desizing and cold dome open width technique by disperse dyeing after absorbance and dye-uptake and the fabric K/S value of solution, (the blue TERASILLF of method DISPERSE DYES (o.w.f) 1.5%, the yellow TERASILLF of DISPERSE DYES (o.w.f) 0.85%, the red TERASILLF of DISPERSE DYES (o.w.f) 0.15%, Disperse Leveler UNIVADINETOP0.5g/l, pH value 4.5, bath raio 1:8, 1 ℃/min of heating rate, 130 ℃ * 60min of dyeing temperature).

Solution absorbance and dye uptake after the cylinder refining of table 8 machine and the pre-treatment of cold dome open width

Fabrics cloth cover K/S value after the cylinder refining of table 9 machine and the pre-treatment of cold dome open width

Table 8, table 9 data are known, no matter be Comparative Examples technique or embodiment technique, the absorbance of dyeing residual liquid is lower, and fabric has dye uptake preferably.And embodiment technique is due to omnidistance low-tension, and fabric fibre obtains abundant swelling and discharges internal stress, and destarch is complete, basic identical with the result of Comparative Examples technique on the uniformity of therefore dying on dyeability and fabric.

Above-described embodiment is only explanation technical conceive of the present invention and characteristics, and its purpose is to allow the person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.

Claims (2)

1. the Cold pad-batch pretreatment of a chemical fiber plus material is characterized in that: adopt evenness calender to be padded processing to described chemical fiber plus material grey cloth, then will be through the chemical fiber plus material grey cloth that pads processing under 35 ~ 40 ℃ of conditions, and cold dome 40 ~ 55 hours; Describedly pad padding in treatment fluid every liter and padding treatment fluid and contain 98 ~ 102 gram liquid caustic soda, 1.8 ~ 2.2 gram hydrogen peroxide, 1.8 ~ 2.2 gram oxidation desizing agent TF-127K, 0.4 ~ 0.6 gram high-efficiency refining agent TF-188,0.4 ~ 0.6 gram alkali decrement penetrant t F-107 of process using; Described liquid caustic soda is the sodium hydroxide solution that mass concentration is 32%.

2. the Cold pad-batch pretreatment of chemical fiber plus material according to claim 1 is characterized in that: described padding processed padding in treatment fluid every liter and padding treatment fluid and contain 100 gram liquid caustic soda, 2 gram hydrogen peroxide, 2 gram oxidation desizing agent TF-127K, 0.5 gram high-efficiency refining agent TF-188,0.5 gram alkali decrement penetrant t F-107 of using; Described liquid caustic soda is the sodium hydroxide solution that mass concentration is 32%.