Multifunctional PVA (polyvinyl alcohol) collodion

Abstract

The invention discloses multifunctional PVA (polyvinyl alcohol) collodion which takes polyvinyl alcohol (PVA) with medium polymerization degree and alcoholysis degree of 95-98% as a main matrix, the collodion contains an additive for washing protection, and the collodion contains functional components for floor cleaning. The washing machine has the beneficial effects of high innovation, remarkable washing effect, excellent floor cleaning effect, practicability, convenience, environmental friendliness and the like.

Description

Technical Field

[0001] The invention relates to the field of cleaning materials, and in particular to a multifunctional PVA collodion. Background Art

[0002] In modern home life, cleaning tasks are complex and diverse, covering many key areas such as clothing washing and floor cleaning, but existing cleaning materials and tools can hardly meet people's growing demand for efficiency and versatility.

[0003] As far as the laundry process is concerned, with the increasing variety of clothing materials and colors, the problem of color transfer and discoloration in the washing process has become more prominent. When dealing with mixed-color clothing, traditional laundry methods often face the problem of dark-colored clothing dyes falling off and staining light-colored clothing, which not only damages the appearance of clothing and shortens its service life, but also may cause consumers to spend extra time and money to repair or repurchase. According to market research statistics, about 70% of households have encountered the problem of clothing color transfer in daily laundry, especially when washing natural fiber fabrics such as cotton and linen, and fashionable clothing with multiple colors. The phenomenon of color transfer is more frequent. At the same time, factors such as frequent washing, mechanical stirring, the effect of chemical detergents, and sun exposure make the problem of clothing discoloration not to be ignored. Every year, a considerable number of clothes are eliminated due to discoloration. Although there are some laundry products on the market that claim to have anti-color transfer and anti-discoloration functions, such as laundry bags and anti-dyeing sheets, most of them have a single function and limited usage scenarios, and cannot fundamentally solve the problem of color protection in the laundry process.

[0004] Let's look at the field of floor cleaning. As an important part of home cleaning, the frequency of floor cleaning is high and the requirements are also high. Traditional mops are the most commonly used floor cleaning tools, but they have many disadvantages. Although cotton mops have good water absorption, they are easy to breed bacteria and mold, and residual water stains after cleaning. If they are not dried in time, the floor will easily become damp and deformed; although rubber cotton mops can solve the problem of water stains, their cleaning function is relatively single, and the cleaning effect is not good for complex stains such as kitchen oil stains, restaurant food residues, and living room dust and footprints. In addition, in order to meet different cleaning needs, families often need to purchase multiple types of mops, which not only takes up space, but also increases the difficulty of storage.

[0005] From the perspective of materials science, polyvinyl alcohol (PVA), as a polymer material with excellent hydrophilicity, film-forming properties and biocompatibility, has been widely used in the cleaning field. However, traditional PVA cotton products only utilize its basic water absorption properties and fail to fully tap its potential functions. In today's context of advocating convenient, efficient and environmentally friendly living concepts, there is an urgent need to develop an innovative multifunctional cleaning product based on PVA material that combines laundry protection and floor cleaning functions into one, fills the market gap, and provides consumers with a one-stop cleaning solution.

[0006] In summary, the development of a multifunctional PVA cotton product that can not only effectively solve the problem of color transfer and fading of clothes during washing, but also excellently complete the task of floor cleaning has great practical significance and broad market prospects. Summary of the invention

[0007] In order to solve the above problems, especially to address the deficiencies in the prior art, the present invention provides a multifunctional PVA collodion that can solve the above problems.

[0008] To achieve the above purpose, the present invention adopts the following technical means:

[0009] A multifunctional PVA material collodion, wherein the collodion uses polyvinyl alcohol (PVA) with a medium degree of polymerization and an alcoholysis degree between 95% and 98% as a main matrix, the collodion contains an additive for laundry protection, and the collodion contains a functional component for floor cleaning.

[0010] A further embodiment of the present invention is that the polymerization degree of the collodion is 1200-1800.

[0011] A further solution of the present invention is that the laundry protective additive includes at least an anti-color transfer agent and an anti-color fading agent; wherein the anti-color transfer agent is polydimethyldiallyl ammonium chloride (PDMDAAC) with a relative molecular mass between 100,000 and 300,000, and its added amount accounts for 3%-6% of the total weight of the collodion; the anti-color fading agent is a nano-scale silica (SiO2) sol with a particle size of 10-30nm, and its added amount accounts for 2%-5% of the total weight of the collodion.

[0012] A further solution of the present invention is that the laundry protective additive also includes fragrance, and the added amount of the fragrance accounts for 0.5%-1.5% of the total weight of the collodion.

[0013] A further solution of the present invention is that the floor cleaning functional components include at least a non-ionic surfactant and an antibacterial agent; wherein the non-ionic surfactant is fatty alcohol polyoxyethylene ether (AEO) with an HLB value between 12 and 15, and the added amount accounts for 4% to 8% of the total weight of the collodion; the antibacterial agent is benzyl dimethyl tetradecyl ammonium chloride, and the added amount accounts for 0.1% to 0.3% of the total weight of the collodion.

[0014] A further solution of the present invention is that the specific preparation method of the multifunctional PVA collodion is:

[0015] Step 1: Preparation of PVA solution:

[0016] Add the selected PVA raw material into deionized water in proportion, and continue stirring in a constant temperature water bath at 85-92°C for 1.5-2.5 hours until the PVA is completely dissolved to form a uniform and transparent PVA solution, and the concentration of the solution is controlled at 8%-12%, to finally obtain a PVA solution;

[0017] Step 2: Add additives:

[0018] The additive for laundry protection and the functional component for floor cleaning are respectively dispersed evenly with a small amount of deionized water by ultrasonication, and then slowly added to the PVA solution in step 1 in sequence. Stirring is continued for 20-40 minutes after each addition of an additive to ensure that the additives are evenly dispersed and to avoid agglomeration that affects performance, and finally a mixed solution is obtained;

[0019] Step 3: Casting:

[0020] The mixed solution prepared in step 2 is poured into a special vacuum mold. A fine filter is set at the bottom of the mold to remove bubbles in the solution and ensure that the internal structure of the collodion is dense. The thickness of the collodion is controlled at 4-7mm by adjusting the height and flow rate of the pouring port.

[0021] Step 4 Post-processing:

[0022] The collodion formed in step 3 is peeled off from the mold and irradiated with ultraviolet light. The wavelength is 280-320nm and the irradiation intensity is 3-8mW / cm 2 The irradiation time is 15-25 minutes to activate the antibacterial components on the surface of the collodion and enhance the antibacterial effect; the collodion is placed in an environment of 65%-75% relative humidity for 18-36 hours for moisture regain treatment, and finally a multifunctional PVA collodion product is obtained.

[0023] Beneficial effects of the present invention:

[0024] 1. The invention is highly innovative. It cleverly integrates the functions of laundry color transfer prevention and color fading prevention with floor cleaning function into PVA cotton, breaking the limitation of single function of traditional cleaning materials, creating a new field of multifunctional cleaning products and filling the market gap.

[0025] 2. The washing effect of the present invention is remarkable. It effectively solves the problem of color transfer and discoloration of clothes, prolongs the beautiful life of clothes, and at the same time adds fragrance to the washing process, improves the user's washing experience, and meets consumers' demand for high-quality laundry.

[0026] 3. The floor cleaning of the present invention is excellent. The powerful decontamination ability and long-lasting antibacterial performance make floor cleaning more efficient and hygienic, saving cleaning time and energy, and creating a clean and healthy living environment for the family.

[0027] 4. The present invention is practical and convenient. The multifunctional integrated design reduces the complexity of cleaning tools, facilitates storage and use, and the reusability of the cotton wool further reduces the cost of use, which has a broad market promotion prospect.

[0028] 5. The present invention is environmentally friendly. The main PVA material and additives mostly meet environmental protection requirements, are degradable or low-toxic, and the discarded collodion after use is environmentally friendly and in line with the concept of sustainable development. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example 1

[0031] A multifunctional PVA collodion, which uses polyvinyl alcohol (PVA) with a medium degree of polymerization (degree of polymerization 1200-1800) and a degree of alcoholysis between 95% and 98% as the main matrix. The main matrix gives the collodion basic flexibility, hydrophilicity and film-forming properties, enabling it to maintain structural stability and perform basic water absorption functions in different application scenarios. This article clarifies the core material characteristics of the collodion, lays the basic framework for the product, and provides support for subsequent functional expansion. It is the foundation for distinguishing it from other ordinary collodions and achieving multi-functions.

[0032] Collodion contains additives for laundry protection, which include at least anti-color transfer agents and anti-fading agents; among them, the anti-color transfer agent is polydimethyldiallyl ammonium chloride (PDMDAAC) with a relative molecular mass between 100,000 and 300,000, and its addition amount accounts for 3%-6% of the total weight of the collodion. It combines with the negatively charged dye ions in the laundry water through electrostatic adsorption to prevent the diffusion of dyes and prevent the color transfer of clothes; the anti-fading agent is a nano-scale silica (SiO2) sol with a particle size of 10-30nm, and its addition amount accounts for 2%-5% of the total weight of the collodion. It can form a protective film on the surface of clothing fibers, reduce the damage of dye molecules to washing factors, and play a role in fixing colors. This line refines the key additives for laundry functions, accurately defines the composition, characteristics, working principle, and addition amount, and ensures that the collodion has reliable laundry protection capabilities, which is the core guarantee for achieving anti-color transfer and anti-fading in laundry.

[0033] Laundry protection additives also include fragrances, which are added in an amount of 0.5%-1.5% of the total weight of the cotton pads. They release a fresh fragrance during the laundry process, leaving the clothes with a pleasant fragrance after washing, thus improving the laundry experience. On the basis of ensuring laundry protection, taking into account the sensory needs of consumers, using fragrances to add added value to laundry, further optimizing product practicality and user acceptance.

[0034] The collodion contains functional ingredients for floor cleaning, which include at least non-ionic surfactants and antimicrobial agents; among them, the non-ionic surfactant is fatty alcohol polyoxyethylene ether (AEO), with an HLB value between 12-15, and the added amount accounts for 4%-8% of the total weight of the collodion. With its amphiphilic structure, it reduces the adhesion of dirt when cleaning the floor and enhances the decontamination effect; the antimicrobial agent is benzyl dimethyl tetradecyl ammonium chloride, and the added amount accounts for 0.1%-0.3% of the total weight of the collodion, which is used to inhibit the growth of bacteria after floor cleaning and keep the floor clean. In response to the needs of floor cleaning, the combination of key ingredients is clarified, and each ingredient is accurately quantified according to the characteristics of floor cleaning to ensure that the collodion effectively deals with floor stains and bacteria problems and achieves efficient cleaning.

[0035] The preparation method of collodion includes a solution preparation step, in which the selected PVA raw material is added to deionized water in proportion, and stirred continuously in a constant temperature water bath of 85-92°C for 1.5-2.5 hours until the PVA is completely dissolved to form a uniform and transparent PVA solution. The solution concentration is controlled at 8%-12%, which is a prerequisite for the subsequent addition of functional ingredients to make high-performance collodion. Standardizing the PVA dissolution conditions ensures the stability of the solution quality and lays the foundation for the entire preparation process.

[0036] The preparation method also includes the following steps: when preparing the solution, respectively, ultrasonically disperse the anti-coloring agent, anti-fading agent, flavor, surfactant and antibacterial agent with a small amount of deionized water, and then slowly add them to the PVA solution in sequence. After each additive is added, stirring is continued for 20-40 minutes to ensure that the additives are evenly dispersed to avoid agglomeration that affects performance. The additive integration process is carefully controlled, and each functional component is evenly distributed in the PVA solution through ultrasonic dispersion, slow addition and sufficient stirring, ultimately achieving uniform and stable performance of the collodion.

[0037] The preparation method of the collodion includes the steps of molding process, which is formed by vacuum casting. The prepared mixed solution is poured into a special vacuum mold. A fine filter is set at the bottom of the mold to remove bubbles in the solution and ensure the compactness of the internal structure of the collodion. By adjusting the height and flow rate of the pouring port, the thickness of the collodion is controlled at 4-7mm to ensure uniform thickness. The innovative use of vacuum casting combined with filter exhaust optimizes the molding quality of the collodion and accurately controls the thickness, which not only meets the requirements of the thickness of the collodion in different usage scenarios, but also ensures that the product structure is compact and the performance is reliable.

[0038] The preparation method of the collodion includes a post-processing step, wherein the collodion after forming is peeled off from the mold and subjected to ultraviolet irradiation treatment, the wavelength is selected to be 280-320nm, and the irradiation intensity is 3-8mW / cm 2 , irradiation time 15-25 minutes, activate the antibacterial components on the surface of the collodion and enhance the antibacterial effect; place the collodion in a relative humidity environment of 65%-75% for 18-36 hours for moisture resorption treatment, optimize the flexibility and water absorption of the collodion, and make it reach the best use state. The post-processing process is based on the characteristics and functional requirements of the collodion, using ultraviolet light to activate antibacterial and humidity control to optimize physical properties, ensuring that the collodion has the best comprehensive performance when it leaves the factory and meets actual use requirements.

[0039] The method of using multifunctional PVA cotton pads in laundry applications is as follows: put the cotton pads and the clothes to be washed into the washing machine, and select 1-3 pieces of cotton pads according to the number of clothes and the degree of dirtiness. During the washing process, the anti-color transfer agent and anti-color fading agent in the cotton pads will play a role to prevent the clothes from color transfer and fading. At the same time, the fragrance releases fragrance to give the clothes a fragrance. After washing, take out the cotton pads, wash and dry them for next use. Clarify the specific use of cotton pads in laundry scenarios, from dosage, operation procedures to subsequent processing specifications, guide users to use them scientifically, and ensure the washing effect and the life of the cotton pads.

[0040] The method of using the multifunctional PVA cotton wool in floor cleaning applications is: install the cotton wool on cleaning tools such as mops, soak them and wipe the floor. The surfactant allows the cotton wool to effectively remove stains such as oil, dust, and footprints. The antibacterial agent inhibits the growth of bacteria. After cleaning, wash and dry the cotton wool for reuse. Similarly, the method of use is explained in detail for floor cleaning, covering installation, cleaning operations, and subsequent maintenance, to ensure that users can give full play to the cleaning function of the cotton wool floor and improve cleaning efficiency and hygiene.

[0041] Example 2

[0042] A method for preparing multifunctional PVA collodion, the specific method is as follows:

[0043] (I) Raw material preparation

[0044] Strictly screen PVA raw materials, test their degree of polymerization and alcoholysis to ensure that they meet the design requirements, and purchase them from well-known chemical raw material suppliers to ensure stable quality. Strict quality control is carried out on additives such as anti-color transfer agents, anti-fading agents, flavors, surfactants, antibacterial agents, etc. Nanomaterials require uniform particle size distribution, pure and lasting flavors, and high purity and strong activity of antibacterial agents. All raw materials are sampled before entering the factory, and unqualified products are resolutely returned.

[0045] Preparation of deionized water: Multi-stage reverse osmosis and ion exchange resin are used to remove almost all ionic impurities in the water, ensuring that the water resistivity is greater than 15MΩ·cm, providing a pure solvent environment for the preparation of collodion and preventing impurities in the water from affecting the performance of the collodion.

[0046] (II) Solution preparation operation details

[0047] The PVA dissolution operation is carried out in a stainless steel reactor equipped with a high-precision temperature control system and a strong stirring device. First, add a certain amount of deionized water, start stirring, control the speed at 250-400rpm, slowly add PVA powder to prevent agglomeration, and after the PVA powder is completely wetted, heat it to 85-92℃ and continue stirring for 1.5-2.5 hours. During this period, take samples regularly to observe the transparency and viscosity of the solution to ensure that the PVA is completely dissolved.

[0048] Additive dispersion step: For nano-SiO2 sol, use an ultrasonic cell disruptor for dispersion, with an ultrasonic power of 150-250W and an ultrasonic time of 10-15 minutes to ensure that the nanoparticles are evenly dispersed in a small amount of deionized water; the cationic polyquaternary ammonium salt compounds are stirred in a 40-50℃ water bath for 20-30 minutes to fully dissolve them; the flavor, surfactant, and antibacterial agent are diluted with a small amount of deionized water respectively, and then slowly injected into the PVA solution at a speed of 8-15mL / min. After injection, stirring is continued for 20-40 minutes to ensure uniform mixing.

[0049] (III) Key control points of molding process

[0050] The vacuum mold is made of high-strength, corrosion-resistant acrylic material, and the internal structure of the mold is reasonably designed to ensure that the solution is evenly distributed in a vacuum environment. The filter is made of stainless steel with a pore size of 50-100μm, which can effectively remove bubbles without causing solution blockage. During pouring, the solution flow rate is controlled by a precision flow meter, and the pouring port height is adjusted according to the mold size and the required cotton wool thickness to ensure that the cotton wool thickness is 4-7mm and the error is controlled within ±0.3mm.

[0051] The drying process is carried out in a programmable temperature-controlled hot air circulation oven. In the initial 35-45℃ drying stage, the humidity in the oven is controlled at 25%-35% to ensure slow and even evaporation of moisture and prevent the surface of the collodion from drying out. In the later 50-60℃ intensive drying stage, the humidity is appropriately reduced to 15%-25% to accelerate the curing of the internal structure. The oven temperature and heart rate are recorded every hour to ensure a smooth drying process.

[0052] (IV) Post-processing precautions

[0053] The UV irradiation equipment uses a professional UV curing box, which is equipped with UV lamps with uniform intensity. The cotton wool is placed on a rotating tray to ensure that all parts are evenly exposed to light. During the irradiation process, the UV intensity is monitored in real time. If the intensity drops by more than 15%, the lamp is replaced in time to ensure that the antibacterial ingredients are fully activated.

[0054] The rehumidification treatment is carried out in a constant temperature and humidity chamber, with the temperature in the chamber precisely controlled at 22-26°C and relative humidity at 65%-75%. The cotton wool is hung to avoid contact with water at the bottom of the chamber, and the cotton wool is turned over regularly to allow it to absorb moisture evenly and achieve optimal flexibility and water absorption.

[0055] (V) Product quality testing

[0056] Testing of anti-color transfer and anti-fading performance of laundry: Select clothes of different colors made of pure cotton, chemical fiber and other materials, and put the same amount of clothes into two groups of washing machines, one group uses the collodion of the present invention to assist in washing, and the other group uses ordinary washing methods. After 5-10 cycles of washing, the color changes of the two groups of clothes are compared, and the color difference of the clothes is measured by a colorimeter. It is required that the color difference between the clothes after washing with the collodion of the present invention is reduced by more than 80%, and the degree of fading of a single piece of clothing (measured by the change in fabric whiteness) is reduced by more than 70%.

[0057] Floor cleaning performance test: Use the collodion mop of the present invention to clean a floor with simulated stains such as oil, dust, and footprints, and compare the cleaning effect of a traditional mop. The evaluation is based on indicators such as the percentage of residual stain area and the change in floor gloss after cleaning. It is required that the percentage of residual stain area after cleaning with the collodion mop of the present invention is less than 10%, and the gloss recovery rate is more than 80%. At the same time, the plate count method is used to detect the bacterial growth of the floor after cleaning. Within the specified time (24-48 hours), the growth rate of the number of bacteria is controlled within 50%.

[0058] The examples given in the present invention are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here, and the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A multifunctional PVA collodion, characterized in that: The collodion uses polyvinyl alcohol (PVA) with a medium polymerization degree and an alcoholysis degree between 95% and 98% as a main matrix, contains additives for laundry protection, and contains functional ingredients for floor cleaning.

2. The multifunctional PVA collodion according to claim 1, characterized in that: The polymerization degree of the collodion is 1200-1800.

3. The multifunctional PVA collodion according to claim 1, characterized in that: The laundry protective additives at least include an anti-color transfer agent and an anti-color fading agent; wherein the anti-color transfer agent is polydimethyldiallyl ammonium chloride (PDMDAAC) with a relative molecular mass between 100,000 and 300,000, and its added amount accounts for 3% to 6% of the total weight of the collodion; the anti-color fading agent is a nano-scale silica (SiO2) sol with a particle size of 10-30nm, and its added amount accounts for 2% to 5% of the total weight of the collodion.

4. The multifunctional PVA collodion according to claim 3, characterized in that: The laundry protective additive also includes fragrance, and the added amount of the fragrance accounts for 0.5%-1.5% of the total weight of the collodion.

5. The multifunctional PVA collodion according to claim 1, characterized in that: The floor cleaning functional components at least include a nonionic surfactant and an antibacterial agent; wherein the nonionic surfactant is fatty alcohol polyoxyethylene ether (AEO), the HLB value is between 12-15, and the added amount accounts for 4%-8% of the total weight of the collodion; the antibacterial agent is benzyl dimethyl tetradecyl ammonium chloride, and the added amount accounts for 0.1%-0.3% of the total weight of the collodion.

6. The multifunctional PVA collodion according to claim 1, characterized in that: The specific preparation method of the multifunctional PVA collodion is as follows: Step 1: Preparation of PVA solution: Add the selected PVA raw material into deionized water in proportion, and continue stirring in a constant temperature water bath at 85-92°C for 1.5-2.5 hours until the PVA is completely dissolved to form a uniform and transparent PVA solution, and the concentration of the solution is controlled at 8%-12%, to finally obtain a PVA solution; Step 2: Add additives: The additive for laundry protection and the functional component for floor cleaning are respectively dispersed evenly with a small amount of deionized water by ultrasonication, and then slowly added to the PVA solution in step 1 in sequence. Stirring is continued for 20-40 minutes after each addition of an additive to ensure that the additives are evenly dispersed and to avoid agglomeration that affects performance, and finally a mixed solution is obtained; Step 3: Casting: The mixed solution prepared in step 2 is poured into a special vacuum mold. A fine filter is set at the bottom of the mold to remove bubbles in the solution and ensure that the internal structure of the collodion is dense. The thickness of the collodion is controlled at 4-7mm by adjusting the height and flow rate of the pouring port. Step 4 Post-processing: The collodion formed in step 3 is peeled off from the mold and irradiated with ultraviolet light. The wavelength is 280-320nm and the irradiation intensity is 3-8mW / cm 2 , irradiation time 15-25 minutes, activate the antibacterial components on the surface of the cotton wool and enhance the antibacterial effect; The collodion is placed in an environment of 65%-75% relative humidity for 18-36 hours to perform moisture regain treatment, and finally a multifunctional PVA collodion finished product is obtained.