CN112127149A - Hydrophilic small-layer-difference smoothing agent for cheese and preparation method thereof - Google Patents
Hydrophilic small-layer-difference smoothing agent for cheese and preparation method thereof Download PDFInfo
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- 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
- D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
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- 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
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- 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
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- 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
- D06M13/46—Compounds containing quaternary nitrogen atoms
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- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- 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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- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/50—Modified hand or grip properties; Softening compositions
Abstract
The invention discloses a hydrophilic small-layer-difference smoothing agent for cheese and a preparation method thereof. The hydrophilic small-layer-difference smoothing agent for the cheese comprises: 8-28 wt% of oxidized Fischer-Tropsch wax, 2-7 wt% of low-melting-point wax, 2-7 wt% of synthetic wax, 0.5-3 wt% of softening agent, 4-16 wt% of emulsifying agent, 0.1-1 wt% of sodium hydroxide or potassium hydroxide, 0.1-4 wt% of cation regulator and 50-80 wt% of water. When the smoothing agent is used for finishing cheese, the smoothness of the yarn can be obviously improved, the dynamic friction coefficient of the yarn is reduced, the sewing performance and the hydrophilicity of knitted fabric are improved, yellowing is reduced, and the difference between the inner layer and the outer layer of the cheese can be effectively reduced compared with the common smoothing agent.
Description
Technical Field
The invention relates to an auxiliary agent for cheese, in particular to a hydrophilic small-layer-difference smoothing agent for cheese and a preparation method thereof.
Background
After the cheese is treated by scouring, bleaching, dyeing and the like, in the process of spooling and subsequent weaving, because a large amount of friction exists between the yarn and parts such as a yarn guide, a heddle eye, a reed and the like, the yarn is easy to break under the action of tension, and the production efficiency and the processing quality are influenced, so the yarn needs to be smoothly finished before the cheese is spooled.
In the field of cheese processing, on one hand, along with the increasing demand of high-end colored woven cloth, the market has more and more demand on high count yarn, and along with the increasing yarn count, the high requirements are provided for the performances of smoothness (friction coefficient reduction), yarn water absorption retention, strength protection and the like of the smoothing agent for the cheese; on the other hand, as the national requirements on environmental protection of the printing and dyeing industry are continuously increased, the bath ratio of cheese processing equipment is smaller and smaller, and the power of the equipment is larger and larger, which can cause the layer difference of the cheese in the processing process to be larger, and the layer difference is one of the most important indexes in the cheese processing process, thus providing extremely high requirements on the stability and permeability of a smoothing agent and the adsorption rate of the yarn.
The cheese smoothing agent used at present is basically divided into silicone oil smoothing agent, low-melting-point wax emulsion, high-melting-point oxidized polyethylene wax emulsion and smoothing agent obtained by compounding the three types of smoothing agents, but the smoothing agents have the defect that the smoothing agents cannot be avoided.
Silicone smoothing agents such as those described in patent publications CN107747224A and CN10480561B can reduce the friction coefficient of yarns, but silicone smoothing agents used in small bath ratio cheese equipment are prone to generate silicone spots due to insufficient stability, and silicone smoothing agents reduce cohesive force between yarns, so that the strength of the yarns is reduced, and the subsequent processes such as winding and weaving are not facilitated.
The low-melting-point wax emulsion has the advantages of uniform film formation, good glossiness and smoothness and the like, can be used as a smoothing agent to be finished on yarns, but the raw materials repel water, the water absorption of the processed yarns is poor, the hand feeling of the yarns processed by the wax raw materials is hard, and even if a large amount of surfactant and softener are added to improve the water absorption and hand feeling, the water absorption of the processed yarns is obviously reduced because the low-melting-point wax serving as the main raw material is not changed. Meanwhile, due to the addition of a large amount of auxiliary raw materials, the emulsion has poor stability and cannot well meet the requirements of more and more cheese dyeing machines with small bath ratio
The high melting point oxidized polyethylene wax emulsion has the advantages of good smoothness, strong adhesive force, good hydrophilicity, good flexibility and the like, but the melting point of the high melting point oxidized polyethylene wax emulsion is above 130 ℃, even if the high melting point oxidized polyethylene wax emulsion is mixed with low melting point wax and a softening agent for emulsification, such as the smoothing agent prepared by patent publications CN102619090A and CN109487560A, the temperature during emulsification is also required to be 130 ℃, higher requirements on production equipment are required, and a pressure container is required during production. Meanwhile, when the emulsion breaking device is used on a cheese dyeing machine with a small bath ratio, the risk of the cheese layer difference caused by the product emulsion breaking is increased.
In summary, in the application of the smoothing agent for cheese, under the condition of obtaining low dynamic friction coefficient, high strength retention rate and good hydrophilicity, the problem of ensuring that the smoothing agent does not generate large layer difference when used on a cheese dyeing machine with small bath ratio is a problem to be solved urgently.
Therefore, the research and preparation of the hydrophilic small-layer-difference smoothing agent for cheese, which has good hydrophilicity, excellent stability and uniform adsorption and can be produced under normal pressure, has important practical value.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects in the prior art and provide a hydrophilic small-layer-difference smoothing agent for cheese.
Therefore, the invention adopts the following technical scheme: a hydrophilic small-layer-difference smoothing agent for cheese comprises the following components in parts by weight:
oxidation of Fischer-Tropsch wax: 8 to 28 percent;
low melting point wax: 2 to 7 percent;
artificially synthesizing wax: 2 to 7 percent;
softening agent: 0.5-3%;
emulsifier: 4 to 16 percent;
sodium hydroxide or potassium hydroxide: 0.1 to 1 percent;
cationic modifier: 0 to 4 percent;
water: 50 to 80 percent.
The oxidized Fischer-Tropsch wax has the advantages of high hardness, strong adhesive force, good hydrophilicity, good flexibility and the like as well as the advantages of the oxidized Fischer-Tropsch wax with the melting point lower than 100 ℃, thereby providing feasibility for the production of the invention by using a common normal-pressure emulsifying kettle. The wax emulsion with higher hydrophilicity and good smoothness can be prepared by adopting the oxidized Fischer-Tropsch wax with the melting point lower than 100 ℃, the low-melting-point wax and the artificially synthesized wax for composite emulsification.
Furthermore, the oxidized Fischer-Tropsch wax is white powder with the melting point lower than 100 ℃, the molar mass of 4000-8000g/mol and the acid value of 15-50 mgKOH/g. The invention selects the oxidized Fischer-Tropsch wax with the melting point lower than 100 ℃ as the core raw material, and can be prepared by a one-step normal-pressure emulsification method by using a common emulsification kettle.
Further, the low-melting-point wax has a melting point lower than 90 ℃ and is one or more of beeswax, Fischer-Tropsch wax, microcrystalline wax, rice bran wax and paraffin wax.
Further, the synthetic wax has the following structural formula:
in the formula: r1、R2Is C10-C20A saturated alkyl group.
Further, the structure of the softening agent is as follows:
wherein: r1、R2Is C10-C18Saturated or unsaturated alkyl groups.
Further, the emulsifier is a mixture of fatty alcohol-polyoxyethylene ether surfactant, fatty alcohol-polyoxyethylene ether polyoxypropylene ether block surfactant and fatty amine-polyoxyethylene ether surfactant, and the fatty alcohol-polyoxyethylene ether: fatty alcohol polyoxyethylene ether polyoxypropylene ether block: the dosage of the fatty amine polyoxyethylene ether surfactant is 1-3:2.5-5.5:0.5-1, and the EO number in the fatty amine polyoxyethylene ether surfactant is 4-20. The invention adopts the customized fatty alcohol polyoxyethylene ether polyoxypropylene ether block surfactant on the basis of the wax emulsion, and is beneficial to improving the stability and permeability of the wax emulsion. The invention selects the customized block emulsifier, has better product stability and permeability than the common smoothing agent, can better adapt to cheese processing equipment, and reduces the layer difference of the cheese.
Further, the fatty alcohol-polyoxyethylene ether polyoxypropylene ether block surfactant has the following structure:
wherein: r is C8-C18X is an integer from 4 to 14, y is an integer from 2 to 10, and z is an integer from 4 to 14.
Further, the cation regulator is alkylamide hydroxyethyl quaternary ammonium salt. The invention selects the water-soluble hydrophilic cation regulator, and adjusts the ionic property of the product by controlling the addition amount of the water-soluble hydrophilic cation regulator so as to control the adsorption rate of the product on the cheese and ensure that the layer difference of the cheese is smaller.
The invention also provides a preparation method of the hydrophilic small-layer-difference smoothing agent for the cheese, which comprises the following steps:
A) putting oxidized Fischer-Tropsch wax, low-melting-point wax, artificially synthesized wax, a softening agent, an emulsifying agent and sodium hydroxide or potassium hydroxide into a reaction kettle;
B) heating to 50 deg.C, stirring, and heating to 80-90 deg.C;
C) adding 80-90 deg.C hot water for several times, heating to maintain the temperature in the kettle above 95 deg.C, and stirring for emulsification;
D) rapidly cooling to room temperature;
E) discharging and filtering to obtain the hydrophilic small-layer-difference smoothing agent for the cheese.
Further, the preparation method also comprises the following steps: after the step D) and before the step E), adding the required amount of the cation regulator into the reaction kettle while stirring, and uniformly stirring.
When the smoothing agent is used for finishing cheese, the smoothness of the yarn can be obviously improved, the dynamic friction coefficient of the yarn is reduced, the sewing performance and the hydrophilicity of knitted fabric are improved, yellowing is reduced, and the difference between the inner layer and the outer layer of the cheese can be effectively reduced compared with the common smoothing agent.
The preparation method of the invention adds hot water in batches, the cheese prepared by the phase inversion emulsification method uses the hydrophilic small-layer-difference smoothing agent, the emulsion particle size is less than 200nm, the centrifugal stability, the circulation stability and the aeration stability are good, the emulsion is used for smoothing and finishing the cheese, especially when the cheese is processed on a cheese dyeing machine with small bath ratio, the dynamic friction coefficient of the yarn can be effectively reduced, the sewing performance is improved, the cheese has good smooth hand feeling, excellent hydrophilicity and small layer difference, and the cheese can be produced by a common normal-pressure emulsification kettle, and the preparation method is simple.
Drawings
FIG. 1 is a graph showing the particle size distribution of a hydrophilic small-layer difference smoothing agent for cheese according to example 1 of the present invention;
FIG. 2 is a graph showing the particle size distribution of a hydrophilic small-layer difference smoothing agent for a cheese according to example 2 of the present invention;
FIG. 3 is a graph showing the particle size distribution of the hydrophilic small-layer difference leveler for cheese according to example 3 of the present invention.
Detailed Description
In a preferred embodiment, the hydrophilic small layer difference smoothing agent for cheese according to the present invention comprises:
oxidation of Fischer-Tropsch wax: 8 to 28 percent by weight of a catalyst,
low melting point wax: 2 to 7 percent by weight of a catalyst,
artificially synthesizing wax: 2 to 7 percent by weight of a catalyst,
softening agent: 0.5 to 3% by weight of a water-soluble polymer,
emulsifier: 4 to 16 percent by weight of a catalyst,
sodium hydroxide or potassium hydroxide: 0.1 to 1% by weight of a stabilizer,
cationic modifier: 0 to 4% by weight of a water-soluble polymer,
water: 50-80 wt%.
In a preferred embodiment, the oxidized Fischer-Tropsch wax is a white powder having a melting point of less than 100 ℃, preferably 70-100 ℃, more preferably 90-100 ℃, a molar mass of 4000-8000g/mol, preferably 5500-8000g/mol, more preferably 7000-8000g/mol, and an acid value of 15-50mgKOH/g, preferably 25-50mgKOH/g, more preferably 35-50 mgKOH/g.
In a preferred embodiment, the low melting wax has a melting point of less than 90 ℃, preferably 50 to 80 ℃; the low-melting-point wax is preferably one or more of beeswax, Fischer-Tropsch wax, microcrystalline wax, rice bran wax and paraffin wax.
In a preferred embodiment, the synthetic wax has the following structural formula:
in the formula: r1、R2Is C10-C20Saturated alkyl, preferably C15-20A saturated alkyl group;
the synthesis method comprises the following steps:
A. c is to be10-20Alcohol and C10-20Adding acid into the reaction kettle according to the mol ratio of 0.8-1.2: 1;
B. heating to 140-200 ℃ while introducing nitrogen; reacting for 2-6 hours;
C. determining the acid value of the reactant to be below 30mgKOH/g, and finishing the reaction;
D. cooling with cooling water to 50-80 deg.C, discharging while hot, slicing, and packaging.
In a preferred embodiment, the softener is of the structure:
wherein: r1、R2Is C10-C18Saturated or unsaturated alkyl groups of (a); preferably C14-18A saturated or unsaturated alkyl group; more preferably C14-18An unsaturated alkyl group.
The synthesis method comprises the following steps:
A.C10-20adding saturated or unsaturated fatty acid and diethanol amine into a reaction kettle according to the mol ratio of 1.5-2.5: 1;
B. heating to 140-200 ℃ while introducing nitrogen; reacting for 2-6 hours;
C. determining the acid value of the reactant to be below 30mgKOH/g, and finishing the reaction;
D. cooling with cooling water to below 50 deg.C, discharging and packaging.
In a preferred embodiment, the emulsifier is a mixture of fatty alcohol polyoxyethylene ether surfactant, fatty alcohol polyoxyethylene ether polyoxypropylene ether block surfactant, fatty amine polyoxyethylene ether surfactant, and the weight ratio of fatty alcohol polyoxyethylene ether surfactant: fatty alcohol polyoxyethylene ether polyoxypropylene ether block surfactant: the dosage of the fatty amine polyoxyethylene ether surfactant is 1-3:2.5-5.5:0.5-1, preferably 1.2-2.7:3-4.9: 0.6-0.9; more preferably 1.4-2.4:3.5-4.4: 0.7-0.8.
In a preferred embodiment, the fatty alcohol polyoxyethylene ether polyoxypropylene ether block surfactant has the following structure:
wherein: r is C8-C18X is an integer of 4 to 14; y is an integer from 2 to 10; z is an integer from 4 to 14.
In a preferred embodiment, the cationic conditioning agent is an alkylamide hydroxyethyl quaternary ammonium salt.
Application example:
the application performance of the hydrophilic small-layer-difference smoothing agent for the cheese is verified by the following experiment.
1 content of the experiment
1.1 textile: all-cotton cheese (single yarn weight 1kg) and all-cotton knitted fabric
1.2 smoothing agent: AQ product in China, AG product in foreign countries and smoothing agent of the invention
1.3 application process:
all-cotton cheese:
2% owf working solution, adjusting the pH value to 5.0 by acetic acid, soaking at 40 ℃ for 30min → dehydrating → drying, and balancing for 24h for testing at constant temperature and humidity (20 +/-1 ℃, 65 +/-2% RH).
All-cotton knitted fabric:
30g/L of smoothing agent and 0.2g/L of citric acid are used for adjusting the pH value, and the test is carried out after one-time soaking and one-time rolling (the liquid carrying rate is 90%) → 160 ℃ multiplied by 120s drying and constant temperature and humidity (20 +/-1 ℃, 65 +/-2% RH) balance for 24 h.
2 Performance test
2.1 emulsion particle size
0.2 wt% of the smoothing agent microemulsion was prepared and the average particle size and polydispersity index PDI were determined using a Zetasizer Nano ZS 90 laser particle sizer.
2.2 emulsion centrifuge stability
The smoothing agent microemulsion is centrifuged for 30min at 3000rpm by a TD5 type centrifuge from Shanghai Luxiang apparatus centrifuge Limited, and whether layering and oil floating are realized is observed.
2.3 emulsion circulation stability
The internal evaluation method of the company: preparing 300ml of 2g/l emulsion and adjusting to a specified temperature; dripping the emulsion from a position 12cm away from the liquid level by using a small liquid circulating pump and circularly treating for 30 minutes; the emulsion is filtered by using black cotton cloth, the less scum on the black cotton cloth, the more stable the surface product is, the grade is 1-5 according to the amount of the scum, the worst is 1, and the best is 5.
2.4 aeration stability of emulsion
The internal evaluation method of the company: preparing 300ml of 2g/l emulsion and adjusting to a specified temperature; and after continuously aerating the emulsion for 30 minutes by using an air pressure pump, filtering the emulsion by using black cotton cloth, wherein the less scum on the black cotton cloth, the more stable the surface product is, the more the scum is graded by 1-5 minutes, the worst scum is 1 minute, and the best scum is 5 minutes.
2.5 hydrophilicity
Reference is made to the test method for drip diffusion time described in GB/T21655.1-2008.
2.6 coefficient of dynamic friction of yarn
The coefficient of dynamic friction (draw-off rate 60m/min, test 1min) between the finished yarn and stainless steel at a pre-tension of 30cN was tested by a ROTHSHILD R-3088 analyzer, the lower the coefficient of dynamic friction, the better the yarn smoothness.
2.7 breaking Strength
Referring to the GB/T3916-2013 method, the yarn is placed for 24 hours under the conditions that the temperature is 20 +/-1 ℃ and the relative humidity is 65 +/-2%, the breaking strength of the yarn is tested by a Nantong Sansi YG020B single-yarn strength machine, and the average value is taken after 50 times of testing.
2.8 whiteness
The CIE whiteness of the textile before and after finishing is tested by a Datacolor 600 type color measuring instrument, and the whiteness is reduced less and the yellowing is reduced less.
2.9 seamable Properties
The internal evaluation method of the company: the sewing machine-high-speed single-needle industrial sewing machine, the needle head type-9 #, 11# or 14#, the seam interval-1 mm or 2mm, the vertical direction, 4 layers of placing sewing, pulling the cloth sample after the wireless sewing, and recording the number of needle holes. The smaller the number of pinholes, the better the seamability.
2.10 hand feeling
And (4) evaluating by a hand touch method. The hand feeling evaluation results of 5 persons are integrated (1-5 points, 1 point is the worst, and 5 points are the best).
2.11 cheese layer difference:
uniformly dividing the treated cheese into 7 layers from the innermost to the outermost, taking out the yarn required by the test from each layer, and respectively testing the hydrophilicity, the friction coefficient, the breaking strength and the whiteness of the yarn, wherein the smaller the difference of the obtained data is, the smaller the layer difference of the surface cheese is.
Preparation of synthetic wax 1 used in example 1:
A. adding 214.39g of C14 alcohol and 228.37g of C14 acid into a reaction kettle;
B. heating to 180 ℃ while introducing nitrogen; after 4 hours of reaction, the acid value of the sample sampled and measured is 7.8mgKOH/g, and the reaction is judged to be completed
C. Cooling with cooling water to 70 deg.C, discharging while hot, slicing, and packaging.
Preparation of softener 1 used in example 1:
A.228.37gC14 acid and 52.57g diethanolamine were added to the reaction kettle;
B. heating to 180 ℃ while introducing nitrogen; reacting for 4 hours, sampling to obtain a sample with the acid value of 5.4mgKOH/g, and judging that the reaction is finished;
C. cooling with cooling water to below 50 deg.C, discharging and packaging.
Preparation of synthetic wax 2 used in example 2:
A. 172.31g of C11 alcohol and 284.48g of stearic acid are added into a reaction kettle;
B. heating to 140 ℃ while introducing nitrogen; after 6 hours of reaction, the acid value of the sample sampled and measured was 11.3mgKOH/g, and the completion of the reaction was judged
C. Cooling with cooling water to 80 deg.C, discharging while hot, slicing, and packaging.
Preparation of softener 2 used in example 2:
a.284.48g of stearic acid and 50g of diethanolamine are added into a reaction kettle;
B. heating to 140 ℃ while introducing nitrogen; reacting for 6 hours, sampling to obtain a sample with the acid value of 14.8mgKOH/g, and judging that the reaction is finished;
C. cooling with cooling water to below 50 deg.C, discharging and packaging.
Preparation of synthetic wax 3 used in example 3:
A. adding 270g of n-18 alcohol and 180g of capric acid into a reaction kettle;
B. heating to 200 ℃ while introducing nitrogen; after reacting for 2.5 hours, sampling and measuring the acid value of the sample to be 9.7mgKOH/g, and judging that the reaction is finished;
C. cooling with cooling water to 80 deg.C, discharging while hot, slicing, and packaging.
Preparation of softener 3 used in example 3:
a.255g 2-hexadecenoic acid and 60g diethanolamine are added into a reaction kettle;
B. heating to 200 ℃ while introducing nitrogen; reacting for 2 hours, sampling to obtain a sample with the acid value of 1.3mgKOH/g, and judging that the reaction is finished;
C. cooling with cooling water to below 50 deg.C, discharging and packaging.
Example 1
A) 140g of oxidized Fischer-Tropsch wax A2 (a sasol oxidized Fischer-Tropsch wax), 35g of 56# semi-refined paraffin wax (high-bridged petrochemical), 35g of synthetic wax 1, 20g of softening agent 1, 20g of fatty alcohol polyoxyethylene ether AE0-9 (royal horse), 40g of customized block emulsifier (C14 alcohol 10EO6PO3EO), 7g of octadecylamine polyoxyethylene ether A-C1815 (royal horse) and 5g of potassium hydroxide are added into a reaction kettle;
B) heating to 50 deg.C, stirring, and heating to 90 deg.C;
C) slowly adding 678g of 95 deg.C hot water for 5 times, heating to keep the temperature in the kettle above 95 deg.C, and stirring for emulsification;
D) rapidly cooling to room temperature;
E) adding 20g of cation regulator (Huaqian chemical) into the reaction kettle while stirring, and uniformly stirring;
F) discharging and filtering to obtain white slightly turbid translucent emulsion.
The prepared smoothing agent was prepared into a 0.2 wt% solution with deionized water, and the particle size of the resulting smoothing agent was 165.2nm as measured with a Zetasizer Nano ZS 90 laser particle sizer, the polydispersity index PDI was 0.191, and the particle size distribution plot is shown in FIG. 1. Under the centrifugal test of 3000rpm multiplied by 30min, the emulsion has no floating oil and no layering, and no particles are separated out after the deionized water is arbitrarily diluted. The circulation stability and aeration stability of the smoothing agent are shown in Table 1. The performance properties of the smoothing agent are shown in tables 2 to 6.
Example 2
A) 250g of oxidized Fischer-Tropsch wax A28 (a saso oxidized Fischer-Tropsch wax), 65g of 70# microcrystalline wax (purchased from the bee wax industry), 65g of synthetic wax 2, 30g of softener 2, 20g of fatty alcohol polyoxyethylene ether XL-140 (basf), 110g of a custom block emulsifier (C10 alcohol 20EO3PO10EO), 18g of octadecylamine polyoxyethylene ether A-C1820 (royal horse), 5g of potassium hydroxide are added into a reaction kettle;
B) heating to 50 deg.C, stirring, and heating to 90 deg.C;
C) slowly adding 417g of 95 deg.C hot water for 5 times, heating to maintain the temperature in the kettle above 95 deg.C, and stirring for emulsification;
D) rapidly cooling to room temperature;
E) adding 20g of cation regulator (Huaqian chemical) into the reaction kettle while stirring, and uniformly stirring;
F) discharging and filtering to obtain white slightly turbid translucent emulsion.
The prepared smoothing agent is prepared into a 0.2 wt% solution by deionized water, the particle size of the obtained smoothing agent is 156.7nm as measured by a Zetasizer Nano ZS 90 laser particle sizer, the polydispersity index PDI is 0.145, and the particle size distribution diagram is shown in FIG. 2. Under the centrifugal test of 3000r multiplied by 30min, the emulsion has no floating oil and no layering, and no particles are separated out after the emulsion is randomly diluted by deionized water. The circulation stability and aeration stability of the smoothing agent are shown in Table 1. The performance properties of the smoothing agent are shown in tables 2 to 6.
Example 3
A) 100g of oxidized Fischer-Tropsch wax A28 (a sasol oxidized Fischer-Tropsch wax), 25g of Fischer-Tropsch wax (H1 sasol), 25g of synthetic wax 3, 10g of a softening agent 3, 10g of fatty alcohol polyoxyethylene ether peregal 0-25 (Hangzhou white waves), 25g of a customized block emulsifier (C18 alcohol 8EO8PO8EO), 5g of octadecylamine polyoxyethylene ether A-C1806 (royal horse) and 5g of potassium hydroxide are added into a reaction kettle;
B) heating to 50 deg.C, stirring, and heating to 90 deg.C;
C) slowly adding 791g of 95 ℃ hot water for 5 times, heating to keep the temperature in the kettle above about 95 ℃, and stirring for emulsification;
D) rapidly cooling to room temperature;
E) adding 4g of cation regulator (Huaqian chemical) into an emulsifying kettle while stirring, and uniformly stirring;
F) discharging and filtering to obtain white slightly turbid translucent emulsion.
The prepared smoothing agent was prepared into a 0.2 wt% solution with deionized water, and the particle size of the resulting smoothing agent was 183.3nm as measured with a Zetasizer Nano ZS 90 laser particle sizer, the polydispersity index PDI was 0.177, and the particle size distribution is shown in FIG. 3. Under the centrifugal test of 3000r multiplied by 30min, the emulsion has no floating oil and no layering, and no particles are separated out after the emulsion is randomly diluted by deionized water. The circulation stability and aeration stability of the smoothing agent are shown in Table 1. The performance properties of the smoothing agent are shown in tables 2 to 6.
Table 1 sample circulation, aeration stability comparison:
as can be seen from Table 1, the circulation stability and aeration stability of the smoothing agent prepared by the invention are obviously improved compared with those of the domestic product AQ and the foreign product AG, and the smoothing agent is more suitable for the processing environment of the cheese.
Sample for cheese processing application Performance comparison
TABLE 2 hydrophilicity
| Second of | Innermost layer | Inner layer | Inner → middle | Middle layer | Middle → outer | Outer layer | Outermost |
| Blank sample | |||||||
| 1 | 1 | <1 | <1 | <1 | <1 | <1 | |
| Example 1 | 3 | 2 | 2 | 1 | 1 | 1 | 1 |
| Example 2 | 2.5 | 2 | 2 | 1 | 1 | 1 | 1 |
| Example 3 | 4 | 3 | 2 | 2 | 1 | 1 | 1 |
| Domestic product AQ | 135 | 110 | 89 | 67 | 13 | 5 | 1 |
| Foreign product AG | 26 | 16 | 5 | 3 | 3 | 2 | 2 |
TABLE 3 coefficient of friction
| Innermost layer | Inner layer | Inner → middle | Middle layer | Middle → outer | Outer layer | Outermost layer | |
| Blank sample | Broken yarn | Broken yarn | Broken yarn | Broken yarn | Broken yarn | Broken yarn | Broken yarn |
| Example 1 | 0.248 | 0.243 | 0.247 | 0.255 | 0.259 | 0.264 | 0.265 |
| Example 2 | 0.240 | 0.244 | 0.249 | 0.257 | 0.260 | 0.263 | 0.269 |
| Example 3 | 0.244 | 0.249 | 0.255 | 0.259 | 0.267 | 0.267 | 0.270 |
| Domestic product AQ | 0.235 | 0.249 | 0.297 | 0.303 | 0.458 | Broken yarn | Broken yarn |
| Foreign product AG | 0.239 | 0.257 | 0.333 | 0.398 | 0.435 | 0.488 | Broken yarn |
TABLE 4 breaking Strength
| cN | Innermost layer | Inner layer | Inner → middle | Middle layer | Middle → outer | Outer layer | Outermost layer |
| Blank sample | 244.3 | 246.3 | 241.6 | 246.4 | 235.7 | 240.6 | 254.3 |
| Example 1 | 234.9 | 237.8 | 229.6 | 236.8 | 228.5 | 239.6 | 244.7 |
| Example 2 | 230.5 | 231.4 | 236.9 | 241.6 | 235.6 | 243.6 | 250.5 |
| Example 3 | 229.5 | 234.5 | 237.6 | 238.8 | 240.9 | 244.3 | 249.7 |
| Domestic product AQ | 198.5 | 205.6 | 223.6 | 230.4 | 250.6 | 255.4 | 255.6 |
| Foreign product AG | 210.3 | 215.7 | 222.2 | 230.7 | 238.7 | 240.5 | 253.4 |
TABLE 5 whiteness
| Innermost layer | Inner layer | Inner → middle | Middle layer | Middle → outer | Outer layer | Outermost layer | |
| Blank sample | 78.8 | 80.3 | 81.4 | 82.5 | 82.3 | 82.3 | 80.1 |
| Example 1 | 76.7 | 78.4 | 79.6 | 80.5 | 80.4 | 80.6 | 78.5 |
| Example 2 | 76.9 | 78.7 | 79.9 | 81.1 | 80.9 | 80.9 | 79.0 |
| Example 3 | 77.0 | 79.2 | 80.0 | 81.3 | 81.8 | 81.6 | 79.3 |
| Domestic product AQ | 73.6 | 75.4 | 77.7 | 78.2 | 82.2 | 82.5 | 80.2 |
| Foreign product AG | 74.2 | 75.0 | 78.9 | 79.8 | 82.0 | 82.6 | 80.0 |
As can be seen from tables 2-5, the smoothing agent prepared by the invention is finished on the cotton cheese, and on the premise of ensuring high hydrophilicity and low yellowing, obviously reducing the dynamic friction coefficient of the yarn and reducing the breaking strength, the performances show high consistency from the innermost layer to the outermost layer of the cheese, and compared with a domestic product AQ and a foreign product AG, the smoothing agent can obviously reduce the difference between the inner layer and the outer layer of the cheese.
TABLE 6 comparison of finishing application Properties on Cotton knit fabrics
| Number of needle holes | Hydrophilicity | Hand feeling | Whiteness degree | |
| Blank sample | >200 | < |
1 | 83.7 |
| Example 1 | 8 | 4 | 5 | 82.9 |
| Example 2 | 9 | 3 | 5 | 83.2 |
| Example 3 | 6 | 5 | 5 | 83.3 |
| Domestic product AQ | 16 | >180 | 5 | 82.1 |
| |
10 | 5 | 5 | 83.3 |
As can be seen from the data in Table 6, the smoothing agent provided by the invention can remarkably reduce needle holes generated in the sewing process of the knitted fabric, obtain smooth hand feeling and improve the sewing performance of the knitted fabric on the premise of not influencing the hydrophilicity and whiteness of the knitted fabric.
The foregoing is only a preferred embodiment of the present invention. Any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention fall within the scope of the present invention.
Claims (10)
1. A hydrophilic small-layer-difference smoothing agent for cheese is characterized by comprising the following components in parts by weight:
oxidation of Fischer-Tropsch wax: 8 to 28 percent;
low melting point wax: 2 to 7 percent;
artificially synthesizing wax: 2 to 7 percent;
softening agent: 0.5-3%;
emulsifier: 4 to 16 percent;
sodium hydroxide or potassium hydroxide: 0.1 to 1 percent;
cationic modifier: 0 to 4 percent;
water: 50 to 80 percent.
2. The hydrophilic small-layer-difference smoothing agent for cheese as claimed in claim 1, wherein the oxidized Fischer-Tropsch wax is white powder with melting point lower than 100 ℃, molar mass 4000-8000g/mol and acid value 15-50 mgKOH/g.
3. The hydrophilic small-layer-difference smoothing agent for the cheese as claimed in claim 1, wherein the low-melting-point wax has a melting point of less than 90 ℃ and is one or more of beeswax, Fischer-Tropsch wax, microcrystalline wax, rice bran wax and paraffin wax.
4. The hydrophilic small-layer-difference smoothing agent for the cheese as claimed in claim 1, wherein the synthetic wax has the following structural formula:
in the formula: r1、R2Is C10-C20A saturated alkyl group.
5. The hydrophilic small-layer-difference smoothing agent for the cheese as claimed in claim 1, wherein the structure of the softening agent is as follows:
wherein: r1、R2Is C10-C18Saturated or unsaturated alkyl groups.
6. The hydrophilic small-layer difference smoothing agent for the cheese as claimed in claim 1, wherein the emulsifier is a mixture of fatty alcohol polyoxyethylene ether surfactant, fatty alcohol polyoxyethylene ether polyoxypropylene ether block surfactant and fatty amine polyoxyethylene ether surfactant, and the fatty alcohol polyoxyethylene ether: fatty alcohol polyoxyethylene ether polyoxypropylene ether block: the dosage of the fatty amine polyoxyethylene ether surfactant is 1-3:2.5-5.5:0.5-1, and the EO number in the fatty amine polyoxyethylene ether surfactant is 4-20.
7. The hydrophilic small-layer-difference smoothing agent for the cheese as claimed in claim 6, wherein the fatty alcohol polyoxyethylene ether polyoxypropylene ether block surfactant has the following structure:
wherein: r is C8-C18X is an integer from 4 to 14, y is an integer from 2 to 10, and z is an integer from 4 to 14.
8. The hydrophilic small-layer-difference smoothing agent for the cheese as claimed in claim 1, wherein the cationic modifier is alkylamide hydroxyethyl quaternary ammonium salt.
9. A process for the preparation of a smoothing agent as claimed in any one of claims 1 to 8, characterized in that it comprises the steps of:
A) putting oxidized Fischer-Tropsch wax, low-melting-point wax, artificially synthesized wax, a softening agent, an emulsifying agent and sodium hydroxide or potassium hydroxide into a reaction kettle;
B) heating to 50 deg.C, stirring, and heating to 80-90 deg.C;
C) adding 80-90 deg.C hot water for several times, heating to maintain the temperature in the kettle above 95 deg.C, and stirring for emulsification;
D) rapidly cooling to room temperature;
E) discharging and filtering to obtain the hydrophilic small-layer-difference smoothing agent for the cheese.
10. The method of claim 9, further comprising: after the step D) and before the step E), adding the required amount of the cation regulator into the reaction kettle while stirring, and uniformly stirring.
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| DE1593950A1 (en) * | 1966-02-21 | 1971-02-25 | Procter & Gamble | Treatment of textiles |
| US5389136A (en) * | 1992-03-04 | 1995-02-14 | Sandoz Ltd. | Wax dispersions, their production and use |
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