CN102561107B - Antibacterial paper paint and preparation method thereof - Google Patents
Antibacterial paper paint and preparation method thereof Download PDFInfo
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- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 81
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000003973 paint Substances 0.000 title abstract description 6
- 238000000576 coating method Methods 0.000 claims abstract description 69
- 239000011248 coating agent Substances 0.000 claims abstract description 62
- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical compound CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229920001661 Chitosan Polymers 0.000 claims abstract description 31
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 26
- FKPUYTAEIPNGRM-UHFFFAOYSA-N 1-(diaminomethylidene)guanidine;hydron;chloride Chemical compound [Cl-].N\C([NH3+])=N/C(N)=N FKPUYTAEIPNGRM-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000002174 Styrene-butadiene Substances 0.000 claims abstract description 17
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000004816 latex Substances 0.000 claims abstract description 17
- 229920000126 latex Polymers 0.000 claims abstract description 17
- 239000011115 styrene butadiene Substances 0.000 claims abstract description 17
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 17
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims abstract description 15
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims abstract description 15
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims abstract description 15
- 239000007787 solid Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000006185 dispersion Substances 0.000 claims description 24
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 4
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical group C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 2
- 239000013078 crystal Substances 0.000 claims description 2
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 2
- 239000004408 titanium dioxide Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 10
- 239000003242 anti bacterial agent Substances 0.000 description 8
- 238000001035 drying Methods 0.000 description 8
- 238000011160 research Methods 0.000 description 8
- 241000191967 Staphylococcus aureus Species 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000002114 nanocomposite Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 208000035473 Communicable disease Diseases 0.000 description 1
- 230000000843 anti-fungal effect Effects 0.000 description 1
- 239000004599 antimicrobial Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 231100000344 non-irritating Toxicity 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
本发明公开了一种抗菌纸涂料及其制备方法。本发明中的涂料由纳米二氧化钛、壳聚糖双胍盐酸盐、羧基丁苯胶乳、叔丁醇和六偏磷酸钠组成。具体的方法为：第一步，将壳聚糖双胍盐酸盐加入水中，然后加入六偏磷酸钠和叔丁醇，高速分散；第二步，加入纳米二氧化钛，高速分散；第三步，加入羧基丁苯胶乳，高速混合均匀、过滤，调节体系pH值，制得固含量为30％抗菌纸涂料。本发明抗菌纸涂料制备过程是在常温常压下进行的，不需要添加新的设备，工艺简单，生产成本低。
The invention discloses an antibacterial paper coating and a preparation method thereof. The paint in the invention is composed of nanometer titanium dioxide, chitosan biguanide hydrochloride, carboxylated styrene-butadiene latex, tert-butanol and sodium hexametaphosphate. The specific method is: first step, add chitosan biguanide hydrochloride into water, then add sodium hexametaphosphate and tert-butanol, and disperse at high speed; second step, add nano-titanium dioxide, and disperse at high speed; third step, add Carboxylated styrene-butadiene latex, mixed evenly at high speed, filtered, adjusted the pH value of the system, and prepared an antibacterial paper coating with a solid content of 30%. The preparation process of the antibacterial paper coating of the invention is carried out under normal temperature and pressure, without adding new equipment, with simple process and low production cost.
Description
技术领域 technical field
本发明属于功能材料及造纸技术领域，具体涉及一种抗菌纸涂料及其制备方法。 The invention belongs to the technical field of functional materials and papermaking, and in particular relates to an antibacterial paper coating and a preparation method thereof.
背景技术 Background technique
随着经济的快速发展，人们生活水平大大提高，健康意识不断增强，尤其是近年来多种疾病的爆发和流行，使人们越来越重视由有害病菌引起的各种传染病、疾病对人类健康造成的严重危害。纸制品是人们生产和生活中不可或缺的产品，已经被广泛用于日常生活中，生活用纸、厨房用纸、食品包装涂布纸、装饰用纸、卫生和医疗用纸、钞票纸等在人们的生产、生活中占有重要的地位，而目前工业化的此类产品都不具有抗菌功能。随着人们生活水平的提高和卫生意识的加强，必然会对抗菌纸的质量和数量提出更高的要求。有关的专用抗菌材料的研究和抗菌功能纸的开发具有重要的理论意义和实践意义。 With the rapid development of the economy, people's living standards have been greatly improved, and their health awareness has been continuously enhanced. Especially in recent years, the outbreak and prevalence of various diseases have made people pay more and more attention to the impact of various infectious diseases and diseases caused by harmful bacteria on human health. serious harm caused. Paper products are indispensable products in people's production and life, and have been widely used in daily life, such as household paper, kitchen paper, coated paper for food packaging, decorative paper, sanitary and medical paper, banknote paper, etc. Occupy an important position in people's production and life, but the current industrialized products do not have antibacterial function. With the improvement of people's living standards and the strengthening of hygiene awareness, higher requirements will inevitably be placed on the quality and quantity of antibacterial paper. The research on special antibacterial materials and the development of antibacterial functional paper have important theoretical and practical significance.
目前，作为人们日常生活中的必需品、消耗量巨大的纸制品的抗菌功能产品仍处于研究初期阶段，加拿大、美国、北欧等国家已经认识到抗菌材料和抗菌纸研究的重要性，投入了大量的研究力量和资金支持，主要研究专用于植物纤维基材的抗菌材料和抗菌纸的开发，我国华南理工大学制浆造纸工程国家重点实验室、天津科技大学、陕西科技大学等单位也已开展了这方面的研究。总体来看，现有的抗菌纸研究，都采用向纸制品中加入单一无机抗菌材料或天然抗菌材料而使纸品具有抗菌功能。研究表明，无论哪一种抗菌材料，其单独使用时都存在不足之处。自然界大量存在的壳聚糖是一种天然抗菌材料，其抗细菌和抗真菌活性已被广泛研究。壳聚糖具有杀菌率高、安全性好的优点，但是也受到耐热性较差，有效时间不长，应用范围较窄等方面的限制。而纳米二氧化钛是优良的具有光催化作用的无机抗菌材料，属于非溶出型，无毒、无味、无刺激，热稳定性和耐热性好。但是，其必须有紫外线照射才能起到杀菌作用，受环境影响较大。鉴于壳聚糖和纳米二氧化钛均具有抗菌性能，如果将二者进行复合，必将完善材料的抗菌性能。然而，在纸张加工领域，对于适用于植物纤维基材的有机/无机纳米复合抗菌材料的研究尚未见报道，对壳聚糖/二氧化钛纳米复合抗菌纸涂料的制备及其在涂布抗菌纸中的应用研究也仍然是全新的研发课题。 At present, as a necessity in people's daily life and a huge consumption of paper products, antibacterial functional products are still in the initial stage of research. Canada, the United States, Northern Europe and other countries have realized the importance of research on antibacterial materials and antibacterial paper, and invested a lot of money The research force and financial support mainly focus on the development of antibacterial materials and antibacterial paper specially used for plant fiber substrates. The State Key Laboratory of Pulp and Paper Engineering of South China University of Technology, Tianjin University of Science and Technology, Shaanxi University of Science and Technology and other units have also carried out this project. aspects of research. Generally speaking, the existing research on antibacterial paper all adopts adding a single inorganic antibacterial material or natural antibacterial material to the paper product to make the paper product have antibacterial function. Studies have shown that no matter which antibacterial material is used alone, there are deficiencies. Chitosan, which exists in abundance in nature, is a natural antibacterial material, and its antibacterial and antifungal activities have been extensively studied. Chitosan has the advantages of high sterilization rate and good safety, but it is also limited by poor heat resistance, short effective time, and narrow application range. Nano-titanium dioxide is an excellent photocatalytic inorganic antibacterial material, which is non-dissolving, non-toxic, tasteless, non-irritating, and has good thermal stability and heat resistance. However, it must have ultraviolet radiation to play a bactericidal effect, which is greatly affected by the environment. Given that both chitosan and nano-titanium dioxide have antibacterial properties, if the two are combined, the antibacterial properties of the material will be improved. However, in the field of paper processing, the research on organic/inorganic nanocomposite antibacterial materials suitable for plant fiber substrates has not been reported. The preparation of chitosan/titanium dioxide nanocomposite antibacterial paper coatings and its application in coated antibacterial paper Applied research is still a new research and development topic.
目前常见的抗菌纸主要由两种方法加工而成：一种是在浆料中直接加入抗菌剂，然而，由于抗菌剂在上网抄纸过程中随白水流失，会造成生产过程中，抗菌剂用量大，而纸张上的保留量却不多，既增加了成本，又达不到良好的效果。另一种是通过表面涂布或是喷洒药物层，或是通过浸渍的方法制备，喷洒方法制备的抗菌纸具有抗菌剂用量少而抗菌性能优良、相对生产成本较低的优点，但也存在抗菌剂分布不均匀的缺点。浸渍方法制备的抗菌纸虽具有抗菌性能好和抗菌剂分布均匀等优点，但耗时较长，不适应于大型高速纸机生产。利用施胶和涂布方法生产抗菌纸时，抗菌剂用量较少，且均匀性好，因此其是理想的抗菌纸制备方法。 At present, the common antibacterial paper is mainly processed by two methods: one is to add antibacterial agent directly into the slurry. Large, but not much retention on the paper, which not only increases the cost, but also fails to achieve good results. The other is prepared by surface coating or spraying a drug layer, or by dipping. The antibacterial paper prepared by the spraying method has the advantages of less antibacterial agent consumption, excellent antibacterial performance, and relatively low production cost, but there are also The disadvantage of uneven distribution of antimicrobial agent. Although the antibacterial paper prepared by dipping method has the advantages of good antibacterial performance and uniform distribution of antibacterial agent, it takes a long time and is not suitable for large-scale high-speed paper machine production. When the sizing and coating method is used to produce antibacterial paper, the amount of antibacterial agent is less and the uniformity is good, so it is an ideal antibacterial paper preparation method.
发明内容 Contents of the invention
本发明的目的是提供一种抗菌纸涂料及其制备方法。通过调控有机抗菌剂和无机纳米抗菌剂的配比，优化涂料配伍性，增强纸张的抗菌功能；同时改善涂布纸的印刷适性。 The object of the present invention is to provide a kind of antibacterial paper coating and preparation method thereof. By adjusting the ratio of organic antibacterial agent and inorganic nano antibacterial agent, the compatibility of coatings is optimized, the antibacterial function of paper is enhanced, and the printability of coated paper is improved at the same time.
本发明的目的是通过下述技术方案实现的： The purpose of the present invention is achieved through the following technical solutions:
抗菌纸涂料配方： Antibacterial Paper Coating Formula:
纳米二氧化钛； Nano titanium dioxide;
壳聚糖双胍盐酸盐； Chitosan biguanide hydrochloride;
二者之间的重量比例为1:1～7:1。 The weight ratio between the two is 1:1˜7:1.
以纳米二氧化钛和壳聚糖双胍盐酸盐的加入总量为基准， Based on the total amount of nano-titanium dioxide and chitosan biguanide hydrochloride,
羧基丁苯胶乳 10% Carboxylated styrene-butadiene latex 10%
叔丁醇 1% Tertiary Butanol 1%
六偏磷酸钠 0.5% Sodium hexametaphosphate 0.5%
所述纳米二氧化钛晶型为锐钛型，平均粒径为20nm，比表面积80～220 m2/g。 The crystal form of the nano-titanium dioxide is anatase, the average particle size is 20nm, and the specific surface area is 80-220 m 2 /g.
所述壳聚糖双胍盐酸盐是1份的壳聚糖溶于0.4mol/L的盐酸，再加入3份的双氰胺，在90℃的反应温度下反应2h得到的产物。 The chitosan biguanide hydrochloride is a product obtained by dissolving 1 part of chitosan in 0.4 mol/L hydrochloric acid, adding 3 parts of dicyandiamide, and reacting at a reaction temperature of 90° C. for 2 hours.
所述羧基丁苯胶乳的丁二烯单体（配比40%），苯乙烯（配比60%），固含量为53.32%。 The carboxylated styrene-butadiene latex has a solid content of 53.32% of butadiene monomer (40% proportion) and styrene (60% proportion).
所述叔丁醇相对密度0.78，折射率1.39。 The tert-butanol has a relative density of 0.78 and a refractive index of 1.39.
抗菌纸涂料的制备方法包括如下步骤： The preparation method of antibacterial paper coating comprises the steps:
第一步，将壳聚糖双胍盐酸盐加入水中，然后加入六偏磷酸钠和叔丁醇，高速分散； In the first step, add chitosan biguanide hydrochloride to water, then add sodium hexametaphosphate and tert-butanol, and disperse at high speed;
第二步，加入纳米二氧化钛，高速分散； The second step is to add nano-titanium dioxide and disperse at high speed;
第三步，加入羧基丁苯胶乳，高速混合均匀、过滤，调节体系pH值，制得固含量为30％抗菌纸涂料。 The third step is to add carboxylated styrene-butadiene latex, mix evenly at high speed, filter, adjust the pH value of the system, and prepare an antibacterial paper coating with a solid content of 30%.
所述的抗菌纸涂料的制备方法，其特征在于第一步分散速度4000r/min，分散时间25min。 The preparation method of the antibacterial paper coating is characterized in that the dispersion speed of the first step is 4000r/min, and the dispersion time is 25min.
所述的抗菌纸涂料的制备方法，其特征在于第二步分散速度4000r/min，分散时间35min。 The preparation method of the antibacterial paper coating is characterized in that the dispersion speed of the second step is 4000r/min, and the dispersion time is 35min.
所述的抗菌纸涂料的制备方法，其特征在于第三步分散速度1500r/min，分散时间15min。 The preparation method of the antibacterial paper coating is characterized in that the dispersion speed of the third step is 1500r/min, and the dispersion time is 15min.
本发明的有益效果: 1.本发明抗菌纸涂料制备过程是在常温常压下进行的，不需要添加新的设备，工艺简单，生产成本低。2.本发明抗菌纸涂料在纸上进行涂布后，不仅能有效改善纸张的抗菌性能，而且可赋予纸张良好的印刷适性。3.相比于浆内添加抗菌剂方式优势在于：保留率较好，不会造成生产过程中的抗菌剂的浪费，可节省原料；其添加的用量可根据所生产的纸张的要求在较大范围内变动。 Beneficial effects of the present invention: 1. The preparation process of the antibacterial paper coating of the present invention is carried out under normal temperature and normal pressure, without adding new equipment, the process is simple, and the production cost is low. 2. After the antibacterial paper coating of the present invention is coated on the paper, it can not only effectively improve the antibacterial performance of the paper, but also endow the paper with good printability. 3. Compared with the method of adding antibacterial agent in pulp, the advantage is that the retention rate is better, it will not cause waste of antibacterial agent in the production process, and it can save raw materials; the amount of addition can be larger according to the requirements of the paper produced. change within the range.
附图说明 Description of drawings
图1（a）为未涂布的原纸抗菌效果图； Figure 1(a) is the antibacterial effect diagram of uncoated base paper;
图1（b）为纳米二氧化钛/壳聚糖双胍盐酸盐1:1的涂料涂布后的抗菌纸的抗菌效果图； Figure 1(b) is the antibacterial effect diagram of the antibacterial paper coated with nano-titanium dioxide/chitosan biguanide hydrochloride 1:1 coating;
图2为纳米二氧化钛/壳聚糖双胍盐酸盐5:1的涂料的扫描电镜照片。 Fig. 2 is the scanning electron micrograph of the coating of nano titanium dioxide/chitosan biguanide hydrochloride 5:1.
具体实施方式 Detailed ways
实施例1： Example 1:
纳米二氧化钛/壳聚糖双胍盐酸盐 1:1； Nano titanium dioxide/chitosan biguanide hydrochloride 1:1;
以纳米二氧化钛和壳聚糖双胍盐酸盐的加入总量为基准， Based on the total amount of nano-titanium dioxide and chitosan biguanide hydrochloride,
羧基丁苯胶乳， 10%； Carboxylated styrene-butadiene latex, 10%;
六偏磷酸钠， 0.5%； Sodium hexametaphosphate, 0.5%;
叔丁醇 1%。 Tert-butanol 1%.
依据以上配方取壳聚糖双胍盐酸盐加入涂料分散桶的水中，加入六偏磷酸钠及叔丁醇，分散速度保持在4000r/min，分散时间为25min。降低转速至1000r/min，然后加入纳米二氧化钛，逐渐提高转速至4000r/min，持续分散35min。其后，再降低转速至1500r/min，加入丁苯胶乳，分散时间为15min，调节涂料体系pH值至8.0，制得固含量为30％抗菌纸涂料。 According to the above formula, add chitosan biguanide hydrochloride into the water in the paint dispersion tank, add sodium hexametaphosphate and tert-butanol, keep the dispersion speed at 4000r/min, and the dispersion time is 25min. Reduce the rotation speed to 1000r/min, then add nano-titanium dioxide, gradually increase the rotation speed to 4000r/min, and continue to disperse for 35min. Thereafter, reduce the rotation speed to 1500r/min, add styrene-butadiene latex, disperse for 15 minutes, adjust the pH value of the coating system to 8.0, and prepare an antibacterial paper coating with a solid content of 30%.
将原纸按要求平整的放在涂布机上，压下张紧辊，再把涂布辊压在纸张前端，放下固定翼，取一定量的抗菌纸涂料，均匀分布在纸张前端，启动按钮，纸张涂布完成，涂布速度50m/min。涂布后的纸张放入纸样快速干燥器，干燥温度105℃，干燥时间为1min。依据以上配方涂料及涂布工艺制得的抗菌纸，经震荡烧瓶法定量检测，结果表明，涂布抗菌纸对金黄色葡萄球菌抗菌效率达到了92.19%，涂布前后的纸张抗菌试验效果，见图1（a）和图1（b）。同时，经以上配方涂料涂布后，纸张的印刷适性得以明显改善。 Put the base paper flatly on the coating machine as required, press down the tension roller, then press the coating roller on the front of the paper, put down the fixed wings, take a certain amount of antibacterial paper coating, evenly distribute it on the front of the paper, start the button, the paper Coating is completed, and the coating speed is 50m/min. The coated paper is put into the paper sample quick dryer, the drying temperature is 105°C, and the drying time is 1min. According to the antibacterial paper prepared by the above formula coating and coating process, the results show that the antibacterial efficiency of the coated antibacterial paper to Staphylococcus aureus has reached 92.19%, and the paper antibacterial test effect before and after coating, see Figure 1(a) and Figure 1(b). At the same time, the printability of the paper is significantly improved after being coated with the above formula coating.
实施例2： Example 2:
纳米二氧化钛/壳聚糖双胍盐酸盐 2:1； Nano titanium dioxide/chitosan biguanide hydrochloride 2:1;
以纳米二氧化钛和壳聚糖双胍盐酸盐的加入总量为基准， Based on the total amount of nano-titanium dioxide and chitosan biguanide hydrochloride,
羧基丁苯胶乳， 10%； Carboxylated styrene-butadiene latex, 10%;
六偏磷酸钠， 0.5%； Sodium hexametaphosphate, 0.5%;
叔丁醇 1%。 Tert-butanol 1%.
依据以上配方取壳聚糖双胍盐酸盐加入涂料分散桶的水中，加入六偏磷酸钠及叔丁醇，分散速度保持在4000r/min，分散时间为25min。降低转速至1000r/min，然后加入纳米二氧化钛，逐渐提高转速至4000r/min，持续分散35min。其后，再降低转速至1500r/min，加入丁苯胶乳，分散时间为15min，调节涂料体系pH值至8.0，制得固含量为30％抗菌纸涂料。 According to the above formula, add chitosan biguanide hydrochloride into the water in the paint dispersion tank, add sodium hexametaphosphate and tert-butanol, keep the dispersion speed at 4000r/min, and the dispersion time is 25min. Reduce the rotation speed to 1000r/min, then add nano-titanium dioxide, gradually increase the rotation speed to 4000r/min, and continue to disperse for 35min. Thereafter, reduce the rotation speed to 1500r/min, add styrene-butadiene latex, disperse for 15 minutes, adjust the pH value of the coating system to 8.0, and prepare an antibacterial paper coating with a solid content of 30%.
将原纸按要求平整的放在涂布机上，压下张紧辊，再把涂布辊压在纸张前端，放下固定翼，取一定量的抗菌纸涂料，均匀分布在纸张前端，启动按钮，纸张涂布完成，涂布速度50m/min。涂布后的纸张放入纸样快速干燥器，干燥温度105℃，干燥时间为1min。依据以上配方涂料及涂布工艺制得的抗菌纸，经震荡烧瓶法定量检测，结果表明，涂布抗菌纸对金黄色葡萄球菌抗菌效率达到了82.53%。同时，涂布纸的印刷适性得以明显改善。 Put the base paper flatly on the coating machine as required, press down the tension roller, then press the coating roller on the front of the paper, put down the fixed wings, take a certain amount of antibacterial paper coating, evenly distribute it on the front of the paper, start the button, the paper Coating is completed, and the coating speed is 50m/min. The coated paper is put into the paper sample quick dryer, the drying temperature is 105°C, and the drying time is 1min. The antibacterial paper prepared according to the above formula coating and coating process was quantitatively tested by the shaking flask method. The results showed that the antibacterial efficiency of the coated antibacterial paper against Staphylococcus aureus reached 82.53%. At the same time, the printability of the coated paper is significantly improved.
实施例3： Example 3:
纳米二氧化钛/壳聚糖双胍盐酸盐 5:1； Nano titanium dioxide/chitosan biguanide hydrochloride 5:1;
以纳米二氧化钛和壳聚糖双胍盐酸盐的加入总量为基准， Based on the total amount of nano-titanium dioxide and chitosan biguanide hydrochloride added,
羧基丁苯胶乳， 10%； Carboxylated styrene-butadiene latex, 10%;
六偏磷酸钠， 0.5%； Sodium hexametaphosphate, 0.5%;
叔丁醇 1%。 Tert-butanol 1%.
依据以上配方取壳聚糖双胍盐酸盐加入涂料分散桶的水中，加入六偏磷酸钠及叔丁醇，分散速度保持在4000r/min，分散时间为25min。降低转速至1000r/min，然后加入纳米二氧化钛，逐渐提高转速至4000r/min，持续分散35min。其后，再降低转速至1500r/min，加入丁苯胶乳，分散时间为15min，调节涂料体系pH值至8.0，制得固含量为30％抗菌纸涂料，涂料的扫描电镜照片见图2。 According to the above formula, add chitosan biguanide hydrochloride into the water in the paint dispersion tank, add sodium hexametaphosphate and tert-butanol, keep the dispersion speed at 4000r/min, and the dispersion time is 25min. Reduce the rotation speed to 1000r/min, then add nano-titanium dioxide, gradually increase the rotation speed to 4000r/min, and continue to disperse for 35min. Thereafter, reduce the rotation speed to 1500r/min, add styrene-butadiene latex, disperse for 15 minutes, adjust the pH value of the coating system to 8.0, and prepare an antibacterial paper coating with a solid content of 30%. The scanning electron microscope photo of the coating is shown in Figure 2.
将原纸按要求平整的放在涂布机上，压下张紧辊，再把涂布辊压在纸张前端，放下固定翼，取一定量的抗菌纸涂料，均匀分布在纸张前端，启动按钮，纸张涂布完成，涂布速度50m/min。涂布后的纸张放入纸样快速干燥器，干燥温度105℃，干燥时间为1min。依据以上配方涂料及涂布工艺制得的抗菌纸，经震荡烧瓶法定量检测，结果表明，涂布抗菌纸对金黄色葡萄球菌抗菌效率达到了50.56%。同时，涂布纸的印刷适性得以明显改善。 Put the base paper flatly on the coating machine as required, press down the tension roller, then press the coating roller on the front of the paper, put down the fixed wings, take a certain amount of antibacterial paper coating, evenly distribute it on the front of the paper, start the button, the paper Coating is completed, and the coating speed is 50m/min. The coated paper is put into the paper sample quick dryer, the drying temperature is 105°C, and the drying time is 1min. The antibacterial paper prepared according to the above formula coating and coating process was quantitatively tested by the shaking flask method. The results showed that the antibacterial efficiency of the coated antibacterial paper against Staphylococcus aureus reached 50.56%. At the same time, the printability of the coated paper is significantly improved.
实施例4： Example 4:
纳米二氧化钛/壳聚糖双胍盐酸盐 7:1； Nano titanium dioxide/chitosan biguanide hydrochloride 7:1;
以纳米二氧化钛和壳聚糖双胍盐酸盐的加入总量为基准， Based on the total amount of nano-titanium dioxide and chitosan biguanide hydrochloride added,
羧基丁苯胶乳， 10%； Carboxylated styrene-butadiene latex, 10%;
六偏磷酸钠， 0.5%； Sodium hexametaphosphate, 0.5%;
叔丁醇 1%。 Tert-butanol 1%.
依据以上配方取壳聚糖双胍盐酸盐加入涂料分散桶的水中，加入六偏磷酸钠及叔丁醇，分散速度保持在4000r/min，分散时间为25min。降低转速至1000r/min，然后加入纳米二氧化钛，逐渐提高转速至4000r/min，持续分散35min。其后，再降低转速至1500r/min，加入丁苯胶乳，分散时间为15min，调节涂料体系pH值至8.0，制得固含量为30％抗菌纸涂料。 According to the above formula, add chitosan biguanide hydrochloride into the water in the paint dispersion tank, add sodium hexametaphosphate and tert-butanol, keep the dispersion speed at 4000r/min, and the dispersion time is 25min. Reduce the rotation speed to 1000r/min, then add nano-titanium dioxide, gradually increase the rotation speed to 4000r/min, and continue to disperse for 35min. Thereafter, reduce the rotation speed to 1500r/min, add styrene-butadiene latex, disperse for 15 minutes, adjust the pH value of the coating system to 8.0, and prepare an antibacterial paper coating with a solid content of 30%.
将原纸按要求平整的放在涂布机上，压下张紧辊，再把涂布辊压在纸张前端，放下固定翼，取一定量的抗菌纸涂料，均匀分布在纸张前端，启动按钮，纸张涂布完成，涂布速度50m/min。涂布后的纸张放入纸样快速干燥器，干燥温度105℃，干燥时间为1min。依据以上配方涂料及涂布工艺制得的抗菌纸，经震荡烧瓶法定量检测，结果表明，涂布抗菌纸对金黄色葡萄球菌抗菌效率达到了45.72%。同时，涂布纸的印刷适性得以明显改善。 Put the base paper flatly on the coating machine as required, press down the tension roller, then press the coating roller on the front of the paper, put down the fixed wings, take a certain amount of antibacterial paper coating, evenly distribute it on the front of the paper, start the button, the paper Coating is completed, and the coating speed is 50m/min. The coated paper is put into the paper sample quick dryer, the drying temperature is 105°C, and the drying time is 1min. The antibacterial paper prepared according to the above formula coating and coating process was quantitatively tested by the shaking flask method. The results showed that the antibacterial efficiency of the coated antibacterial paper against Staphylococcus aureus reached 45.72%. At the same time, the printability of the coated paper is significantly improved.
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