CN111693521A - Visual color development method of non-woven fabric with antimicrobial function - Google Patents
Visual color development method of non-woven fabric with antimicrobial function Download PDFInfo
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- CN111693521A CN111693521A CN202010412185.2A CN202010412185A CN111693521A CN 111693521 A CN111693521 A CN 111693521A CN 202010412185 A CN202010412185 A CN 202010412185A CN 111693521 A CN111693521 A CN 111693521A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N2021/775—Indicator and selective membrane
Abstract
The invention relates to a visual color development method of a non-woven fabric with an antimicrobial function, which is characterized by comprising the following steps of: s1) preparing non-woven fabrics with the antimicrobial function; s2) preparing color developer S3) dropping the color developer prepared in step S2) on the non-woven fabric having an antimicrobial function prepared in step S1), the color developer makes a color developing reaction with cations. According to the visual color development method of the non-woven fabric with the antimicrobial function, the prepared antimicrobial non-woven fabric can be used for quickly, obviously and stably judging whether the produced non-woven fabric has the antimicrobial performance or not, so that a non-woven fabric producer can be helped to timely and accurately control the product quality, and a consumer can be helped to quickly and accurately judge whether the purchased product has the antimicrobial performance or not. Historically, antimicrobial and antimicrobial have been difficult to experience and invisible, and the visual color development method of the present invention addresses the need for a user to experience a displayable antimicrobial and antimicrobial health.
Description
Technical Field
The invention belongs to the technical field of functional non-woven fabric production, and particularly relates to a method for developing color of an antimicrobial non-woven fabric with a visual color developing function.
Background
With the frequent occurrence of public health events, particularly the SARS event in 2003 and the novel pneumonia in 2020, the pursuit of safer and more comfortable living environment and the risk of microbial infection become a long-term contradiction, and consumers have an increasing demand for nonwoven fabric products with microbial cleaning performance to meet their requirements for clean and healthy life. Nonwoven fabrics are commonly used in the manufacture of disposable or non-disposable products such as diapers, wet wipes, and feminine hygiene products, and are generally produced from natural materials such as petrochemical materials like polyolefins, polyesters, polylactic acids, rayon, and the like, or cotton fibers.
Because of the invisible, untouched, and inaudible characteristics of the antimicrobial professional field, consumers tend to have low confidence in purchasing antimicrobial nonwoven articles, limiting the applications of antimicrobial nonwoven articles. In addition, because the biocide is susceptible to storage and transportation during the production of the antimicrobial article, the problem of the antimicrobial article failing to perform is often encountered. To verify that the processed nonwoven fabric still has antimicrobial properties, a color development technique using an antimicrobial material can be used. The prior art antimicrobial material coloration techniques often involve two approaches: 1) the color indicator is added into the non-woven fabric, but the indicator and the biocide have no relevance, such as adding starch on the non-woven fabric product, and additionally arranging iodine as the indicator. The method can visually develop color on the non-woven fabric product for consumers, but can not indicate the concentration of the biocide on the non-woven fabric, can not judge the antimicrobial performance of the non-woven fabric, and is a color development technology with misleading; 2) the cationic developer of the antimicrobial material is provided alone, but the color development technique is susceptible to interference from the nonwoven fabric. Such as acid-base residues or changes in hydrophilicity of the nonwoven, can lead to coloration without antimicrobial materials, while in some cases, nonwovens with antimicrobial properties do not. In addition, the conventional general color indicator is a color developer obtained by a dissolution method, and has the defects of incapability of developing color immediately after dropping on a non-woven fabric, unstable color development, no detailed contrast between antibacterial and non-antibacterial, and the like.
Disclosure of Invention
The invention aims to provide a visual color development method of non-woven fabric with an antimicrobial function, which can quickly, obviously and stably judge whether the produced non-woven fabric has antimicrobial performance or not through the prepared antimicrobial non-woven fabric, help non-woven fabric producers to timely and accurately control the product quality, and help consumers to quickly and accurately judge whether the purchased products have antimicrobial performance or not.
The invention relates to a visual color development method of non-woven fabric with antimicrobial function, which is characterized by comprising the following steps:
s1) preparing the non-woven fabric with the antimicrobial function, wherein the preparation method comprises the following steps:
s1.1) taking 0.1-0.2 percent of organic acid, 2-3 percent of cationic biocide, 1-2 percent of moisture absorption and perspiration agent and the balance of water by weight percent, stirring and fully mixing evenly,
s1.2) attaching the obtained mixed solution to two surfaces of a non-woven fabric substrate by padding, spraying or coating,
s1.3) drying the non-woven fabric substrate attached with the mixed solution obtained in the step S1.2) until the non-woven fabric substrate is completely dried to obtain the non-woven fabric with the antimicrobial function;
s2), preparing the color developing agent, wherein the preparation method comprises the following steps:
s2.1) weighing 0.3-0.6 part by weight of thymol blue, 0.3 part by weight of bromophenol blue, 0.3-0.6 part by weight of methyl orange, 80-80.8 parts by weight of alcohol, 8-10 parts by weight of polyoxyethylene ether, 0-8 parts by weight of diethylene glycol, 0-2 parts by weight of propylene glycol and 6-8 parts by weight of distilled water, mixing and stirring at 50 ℃ until the materials are fully dissolved, aging at normal temperature to obtain a color developing agent primary liquid,
s2.2) mixing and reacting 1-20% of organic acid, 2-3% of xylitol, 1-6% of glycerol and the balance of the primary liquid of the color developing agent in percentage by weight, and then aging at normal temperature again to obtain a finished product of the color developing agent;
s3) dropping the color developing agent prepared in the step S2) on the non-woven fabric with the antimicrobial function prepared in the step S1), wherein the color developing agent and the cation generate color developing reaction,
the organic acid is acetic acid, formic acid, malic acid, citric acid, and salicylic acid.
The cationic biocide is quaternary ammonium salt or guanidine salt, namely single-chain quaternary ammonium salt, double-chain quaternary ammonium salt, polyhexamethylene biguanide PHMG and polyhexamethylene biguanide PHMB,
the non-woven fabric base material is made of one or more of cotton, terylene, viscose and polypropylene.
Further, the visualized color developing method is further provided with a color chart, and the color developed by the color developing reaction of the color developing agent and the cations in the step S3) is compared with the color chart, and if the color is similar to the color chart, the cationic activity on the non-woven fabric is strongest.
Further, the step S1.3) is to dry the nonwoven fabric substrate with the mixed solution adhered thereon obtained in the step S1.2) at 120 ℃.
Further, the aging time of step S2.1) and step S2.2) is 4 hours.
The invention has the beneficial effects that 1) the components of the organic acid and the moisture absorption and sweat releasing agent are added into the non-woven dry towel, so that the color development is stable and rapid when the color developing agent is dripped. Under different pH values, the color developing agent has different states, and the organic acid is added to the dry non-woven fabric towel, so that the acid-base degree of the dry non-woven fabric towel is kept consistent all the time, and the color developing stability is facilitated. The moisture absorption and sweat releasing are added, so that the moisture absorption and removal of the dry towel are facilitated, the stability of the moisture on the non-woven dry towel is maintained, a conjugated system is added, and the color developing agent can react quickly; 2) on the basis of common color development components of methyl blue, thymol blue, bromophenol blue or methyl orange, diethylene glycol, propylene glycol, polyethylene glycol, polyoxyethylene ether, alcohol, water, organic acid and the like are added, so that the dissolution of the color development components and the display of a conjugated system are enhanced, and the color development can be rapidly realized within 1 second; 2) the color developing components of methyl blue, thymol blue, bromophenol blue or methyl orange are dissolved or reacted with diethylene glycol, propylene glycol, polyethylene glycol and polyoxyethylene ether, the obtained color developing agent has light color, and only when the color developing agent is dripped on the cationic antimicrobial dry towel, the color developing agent reacts again to develop blue color. The color developing agent for developing is light in self color, the color developing agent which does not obviously remain on the non-woven fabric during the color developing reaction has self color, and the contrast with the color developed by the reaction is strong; 4) by adopting the color developing colorimetric card, whether the non-woven fabric with the antimicrobial function is in the best service life can be judged quickly.
Historically, antimicrobial and antimicrobial have been difficult to experience and invisible, and the visual color development method of the present invention addresses the need for a user to experience a displayable antimicrobial and antimicrobial health.
Detailed Description
The non-woven fabric substrate used in the examples is made of one or more of cotton, polyester, viscose and polypropylene.
Example 1
The non-woven fabric with the antimicrobial function is prepared by taking 0.1 percent of acetic acid, 2 percent of single-chain quaternary ammonium salt, 1 percent of moisture absorption and perspiration agent and the balance of water by weight percent, stirring and fully and uniformly mixing. And adjusting the roller coating speed by using a roller coating device, and attaching the obtained mixed solution to two surfaces of the non-woven fabric base material. And drying the obtained non-woven fabric base material attached with the mixed solution at 120 ℃ until the non-woven fabric base material is completely dried to obtain the non-woven fabric with the antimicrobial function. The moisture absorption and sweat releasing agent adopts Shanghai elysees science and technology company Limited, brand number: PRO-2361.
Preparing a color developing agent, weighing 0.3 part of thymol blue, 0.3 part of bromophenol blue, 0.3 part of methyl orange, 80 parts of alcohol, 8 parts of polyoxyethylene ether and 6 parts of distilled water in parts by weight, mixing and stirring at 50 ℃ until the mixture is fully dissolved, and aging at normal temperature for 4 hours to obtain a primary color developing agent liquid. Mixing and reacting 1-20% of acetic acid, 2-3% of xylitol, 1-6% of glycerol and the balance of primary liquid of the color developing agent in percentage by weight, and aging at normal temperature for 4 hours to obtain a finished product of the color developing agent.
And dropping the prepared color developing agent on the prepared non-woven fabric with the antimicrobial function, wherein the color developing agent and the cation generate color development reaction, and finally, the color developed by the color developing agent and the cation generates color development reaction is compared with the color card.
Example 2
The non-woven fabric with the antimicrobial function is prepared by taking 0.16 percent of citric acid, 2.4 percent of polyhexamethylene guanidine PHMG, 1.5 percent of moisture absorption and perspiration agent and the balance of water by weight percent, stirring and fully mixing uniformly. The obtained mixed solution is attached to two surfaces of the non-woven fabric base material by a spray gun spraying method. And drying the obtained non-woven fabric base material attached with the mixed solution at 120 ℃ until the non-woven fabric base material is completely dried to obtain the non-woven fabric with the antimicrobial function.
Preparing a color developing agent, weighing 0.4 part of thymol blue, 0.3 part of bromophenol blue, 0.45 part of methyl orange, 80.5 parts of alcohol, 9 parts of polyoxyethylene ether, 5 parts of diethylene glycol, 1 part of propylene glycol and 7 parts of distilled water by weight, mixing and stirring at 50 ℃ until the materials are fully dissolved, and aging at normal temperature for 4 hours to obtain a primary liquid of the color developing agent. Mixing and reacting 10 weight percent of salicylic acid, 2.5 weight percent of xylitol, 4 weight percent of glycerin and the balance of primary liquid of a color developing agent, and aging at normal temperature for 4 hours to obtain a finished product of the color developing agent.
And dropping the prepared color developing agent on the prepared non-woven fabric with the antimicrobial function, wherein the color developing agent and the cation generate color development reaction, and finally, the color developed by the color developing agent and the cation generates color development reaction is compared with the color card.
Example 3
Preparing the non-woven fabric with the antimicrobial function, taking 0.2 percent of acetic acid, 3 percent of polyhexamethylene biguanide PHMB, 2 percent of moisture absorption and perspiration agent and the balance of water by weight percent, stirring and fully and uniformly mixing. The obtained mixed solution was attached to both surfaces of the nonwoven fabric substrate by brush coating. And drying the obtained non-woven fabric base material attached with the mixed solution at 120 ℃ until the non-woven fabric base material is completely dried to obtain the non-woven fabric with the antimicrobial function.
Preparing a color developing agent, weighing 0.6 part by weight of thymol blue, 0.3 part by weight of bromophenol blue, 0.6 part by weight of methyl orange, 80.8 parts by weight of alcohol, 10 parts by weight of polyoxyethylene ether, 8 parts by weight of diethylene glycol, 2 parts by weight of propylene glycol and 8 parts by weight of distilled water, mixing and stirring at 50 ℃ until the materials are fully dissolved, and aging at normal temperature for 4 hours to obtain a primary liquid of the color developing agent. Mixing and reacting 20% of organic acid, 3% of xylitol, 6% of glycerol and the balance of the primary liquid of the color developing agent by weight percentage, and aging for 4 hours at normal temperature to obtain a finished product of the color developing agent.
And dropping the prepared color developing agent on the prepared non-woven fabric with the antimicrobial function, wherein the color developing agent and the cation generate color development reaction, and finally, the color developed by the color developing agent and the cation generates color development reaction is compared with the color card.
Claims (4)
1. A visual color development method of non-woven fabric with antimicrobial function is characterized by comprising the following steps:
s1) preparing the non-woven fabric with the antimicrobial function, wherein the preparation method comprises the following steps:
s1.1) taking 0.1-0.2 percent of organic acid, 2-3 percent of cationic biocide, 1-2 percent of moisture absorption and perspiration agent and the balance of water by weight percent, stirring and fully mixing evenly,
s1.2) attaching the obtained mixed solution to two surfaces of a non-woven fabric base material by a padding, spraying or coating method,
s1.3) drying the non-woven fabric base material attached with the mixed solution obtained in the step S1.2) until the non-woven fabric base material is completely dried to obtain the non-woven fabric with the antimicrobial function;
s2), preparing the color developing agent, wherein the preparation method comprises the following steps:
s2.1) weighing 0.3-0.6 part by weight of thymol blue, 0.3 part by weight of bromophenol blue, 0.3-0.6 part by weight of methyl orange, 80-80.8 parts by weight of alcohol, 8-10 parts by weight of polyoxyethylene ether, 0-8 parts by weight of diethylene glycol, 0-2 parts by weight of propylene glycol and 6-8 parts by weight of distilled water, mixing and stirring at 50 ℃ until the materials are fully dissolved, aging at normal temperature to obtain a color developing agent primary liquid,
s2.2) mixing and reacting 1-20% of organic acid, 2-3% of xylitol, 1-6% of glycerol and the balance of the primary liquid of the color developing agent in percentage by weight, and then aging at normal temperature again to obtain a finished product of the color developing agent;
s3) dropping the color developing agent prepared in the step S2) on the non-woven fabric with the antimicrobial function prepared in the step S1), wherein the color developing agent generates color development reaction with cation,
the organic acid is acetic acid, formic acid, malic acid, citric acid, and salicylic acid.
The cationic biocide is quaternary ammonium salt or guanidine salt, namely single-chain quaternary ammonium salt, double-chain quaternary ammonium salt, polyhexamethylene biguanide PHMG and polyhexamethylene biguanide PHMB,
the non-woven fabric base material is made of one or more of cotton, terylene, viscose and polypropylene.
2. The method of claim 1, wherein the color card is further provided, and the color developed by the color developing reaction between the color developing agent and the cation in step S3) is compared with the color card, and if the color is similar to the color card, the cation activity on the nonwoven fabric is strongest.
3. The method of claim 2, wherein the step S1.3) comprises drying the nonwoven fabric substrate with the mixed solution adhered thereon obtained in the step S1.2) at 120 ℃.
4. The method for visually developing an antimicrobial nonwoven fabric according to claim 3, wherein the aging time of step S2.1) and step S2.2) is 4 hours.
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| CN202010412185.2A CN111693521A (en) | 2020-05-15 | 2020-05-15 | Visual color development method of non-woven fabric with antimicrobial function |
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