CN114438771A - Preparation method of biological hyaluronic acid flame-retardant polyester cotton based on complexation of reactive sericin and metal ions - Google Patents
Preparation method of biological hyaluronic acid flame-retardant polyester cotton based on complexation of reactive sericin and metal ions Download PDFInfo
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Abstract
Description
技术领域technical field
本发明涉及生物质阻燃纺织品材料的生产领域，具体涉及一种基于反应型丝胶蛋白与金属离子络合生物质酸阻燃涤棉的方法。The invention relates to the field of production of biomass flame retardant textile materials, in particular to a method based on reactive sericin and metal ions complexing biomass acid flame retardant polyester cotton.
背景技术Background technique
随着社会的进步和科技的发展，涤棉的消费量与品种呈现逐年急剧增加的趋势。由于涤棉具有良好的吸湿透气性、优良的机械强度、价格低廉、制备工序简单等优势，在现代纺织工业中占据重要地位，然而，涤棉具有极高的燃烧危险性，在燃烧过程中火蔓延速度快、助燃性强，极容易对人员的生命安全造成威胁。随着火灾安全意识日益增强，如何减缓涤棉的燃烧过成己然成为近年来世界各国十分重视并竭力解决的问题之一。当前，有机隣阻燃剂由于具有低烟、低毒、无卤、高效阻燃的优点，受到国内外学者广泛的重视。然而，磷系阻燃整理剂在制备过程中用到的原料甲醛与中间体双氯甲醚均对人体有致癌性，且此类方法具有较大的危险性。同时，无机磷系阻燃纤维又因发烟量大、燃烧后产生毒烟且不环保等问题而备受质疑。With the progress of society and the development of science and technology, the consumption and varieties of polyester and cotton show a trend of sharp increase year by year. Polyester-cotton occupies an important position in the modern textile industry due to its good moisture absorption and air permeability, excellent mechanical strength, low price and simple preparation process. It spreads quickly and has strong combustion-supporting properties, which can easily threaten the life safety of personnel. With the increasing awareness of fire safety, how to slow down the burning of polyester and cotton has become one of the problems that countries around the world attach great importance to and try to solve in recent years. At present, organic ortho flame retardants are widely valued by scholars at home and abroad due to their advantages of low smoke, low toxicity, halogen-free, and high efficiency flame retardant. However, both the raw material formaldehyde and the intermediate bischloromethyl ether used in the preparation process of the phosphorus-based flame retardant finishing agent are carcinogenic to the human body, and such methods have great danger. At the same time, inorganic phosphorus-based flame-retardant fibers have been questioned due to the large amount of smoke, toxic smoke generated after combustion, and unenvironmental protection.
制备阻燃纤维、织物阻燃涂层整理、阻燃纤维和阻燃整理相结合是目前制备阻燃纺织品的主要方法。例如，中国科学技术大学的胡源等人[CarbohydratePolymers.15August 2017,Pages133-139]通过使用带正电的聚乙烯亚胺和带负电的海藻酸盐利用层层组装法来制备改性棉织物。然后将金属离子成功构建在基底上，发现棉织物在高温下的降解得到了抑制。该研究为充分利用金属离子交联海藻酸盐从而赋予织物优异的阻燃性能提供了思路。浙江大学的彭懋等人[Chinese Journal of Polymer Sciencevolume 32,pages305–314(2014)]通过以聚乙烯基膦酸(PVPA)为酸源，支化聚乙烯亚胺(BPEI)为发泡剂，采用交替层层自组装的方法在苎麻织物表面制备了一种新型膨胀型阻燃涂料。苎麻织物单纤维表面经PVPA/BPEI涂层热解后形成保护炭层，提高了苎麻的阻燃性能。结果表明，PVPA/BPEI涂层苎麻织物在600℃的残留量高达25.8％，PVPA/BPEI涂层与未涂层织物相比，热释放总量减少66％，热释放量减少76％，本研究提高了纤维的耐火性能，也为成炭阻燃的设计提供了一种有前途的策略，通过多种高分子相作为阻燃元素，拓宽其在功能性防火高分子材料中的应用。虽然层层自主装技术是一种通用的、经济有效的多功能制备方法，但是这种组装技术的结合力往往由于附着力弱，容易脱落等缺点，缩短了阻燃纺织品的耐久性，且在工业应用过程中需要大量的人工操作，在应用过程中，会产生溶液之间的交叉污染风险，阻燃涂层在加工过程中因受到重复性的物理摩擦、水洗、细菌侵蚀等影响耐候的问题。从而使得这类应用技术仍然未有工业化生产的迹象，亟需新的阻燃材料/方法研究来推动其发展。Preparation of flame retardant fibers, fabric flame retardant coating finishing, combination of flame retardant fibers and flame retardant finishing are currently the main methods for preparing flame retardant textiles. For example, Hu Yuan et al. [CarbohydratePolymers.15August 2017, Pages133-139] of University of Science and Technology of China prepared modified cotton fabrics by layer-by-layer assembly using positively charged polyethyleneimine and negatively charged alginate. Then metal ions were successfully constructed on the substrate, and the degradation of cotton fabrics at high temperature was found to be inhibited. This study provides an idea for making full use of metal ions to cross-link alginate to endow fabrics with excellent flame retardant properties. Peng Mao et al. [Chinese Journal of Polymer Sciencevolume 32, pages 305–314 (2014)] from Zhejiang University used polyvinylphosphonic acid (PVPA) as the acid source and branched polyethyleneimine (BPEI) as the foaming agent, A new type of intumescent flame retardant coating was prepared on the surface of ramie fabric by the method of alternating layers of self-assembly. The surface of the single fiber of ramie fabric is pyrolyzed by PVPA/BPEI coating to form a protective carbon layer, which improves the flame retardant performance of ramie. The results show that the residual amount of PVPA/BPEI coated ramie fabric is as high as 25.8% at 600 °C, and the PVPA/BPEI coating reduces the total heat release by 66% and the heat release by 76% compared with the uncoated fabric. This study The improved fire resistance of the fibers also provides a promising strategy for the design of char-forming flame retardants, broadening their application in functional fire-resistant polymer materials by using various polymer phases as flame-retardant elements. Although the layer-by-layer self-assembly technology is a versatile, cost-effective and multi-functional preparation method, the bonding force of this assembly technology often shortens the durability of flame-retardant textiles due to weak adhesion and easy falling off. The industrial application process requires a lot of manual operations. During the application process, there will be a risk of cross-contamination between solutions. The flame retardant coating is subject to repeated physical friction, water washing, bacterial erosion, etc., which affect the weather resistance during processing. . As a result, there is still no sign of industrial production for this type of application technology, and new flame-retardant materials/methods are urgently needed to promote its development.
发明内容SUMMARY OF THE INVENTION
为解决上述问题，本发明基于反应型丝胶蛋白与金属离子络合生物质酸阻燃涤棉的制备方法，首先对织物表面进行等离子处理，将纤维表面的油脂、浆料、杂质除去，然后用高碘酸钠溶液对涤棉织物表面进行氧化处理，增加涤棉织物表面的活性基团，然后用席夫碱反应将丝胶蛋白与改性涤棉织物化学键合，然后与生物质酸反应，最终喷涂不同金属离子溶液进行络合反应，这种反应型的阻燃整理方式，在很大程度上提升阻燃效率和耐水洗性，且本发明原料易得、加工工艺简单、实验过程不需要任何有毒溶剂，绿色环保，所制备的生物质蛋白与金属离子络合生物质酸阻燃织物，可应用于医疗、服装等领域，具有良好的推广价值。In order to solve the above problems, the present invention is based on the preparation method of reactive sericin and metal ions complexed with biomass acid flame retardant polyester cotton. First, the surface of the fabric is treated with plasma to remove the oil, pulp and impurities on the surface of the fiber, and then the surface of the fabric is treated with plasma. The surface of polyester-cotton fabric is oxidized with sodium periodate solution to increase the active groups on the surface of polyester-cotton fabric, and then sericin is chemically bonded to the modified polyester-cotton fabric by Schiff base reaction, and then reacted with biomass acid Finally, different metal ion solutions are sprayed for complexation reaction. This reactive flame retardant finishing method can greatly improve the flame retardant efficiency and water washing resistance, and the raw materials of the present invention are easy to obtain, the processing technology is simple, and the experimental process is not It needs any toxic solvent, is green and environmentally friendly, and the prepared biomass protein and metal ion complex biomass acid flame retardant fabric can be used in medical, clothing and other fields, and has good promotion value.
本发明基于各类生物质阻燃材料制备的方法，并结合化学键技术来提高阻燃整理剂的牢固性，提供了一种实施容易、工艺简单的反应型丝胶蛋白与金属离子络合生物质酸阻燃织物的制备方法。The invention is based on the preparation method of various biomass flame retardant materials, and combines chemical bonding technology to improve the firmness of the flame retardant finishing agent, and provides a reactive sericin and metal ion complex biomass with easy implementation and simple process. Preparation method of acid flame retardant fabric.
一种基于反应型丝胶蛋白与金属离子络合生物质酸阻燃涤棉的制备方法，包括以下步骤：A preparation method based on reactive sericin and metal ions complexed with biomass acid flame retardant polyester cotton, comprising the following steps:
S1、首先将涤棉放入等离子处理机中对其表面进行一定时长的处理，清除涤棉表面的浆料和各类添加剂；S1. First, put the polyester-cotton into the plasma treatment machine to treat the surface for a certain period of time to remove the pulp and various additives on the surface of the polyester-cotton;
S2、然后利用强氧化剂溶液对涤棉织物表面选择性氧化处理，进而利用席夫碱反应将丝胶蛋白与改性涤棉织物化学键合，然后将涤棉织物分别与不同生物质酸发生进一步反应，将生物质酸整理于改性涤棉织物表面备用；S2. Then use a strong oxidant solution to selectively oxidize the surface of the polyester-cotton fabric, and then use the Schiff base reaction to chemically bond sericin to the modified polyester-cotton fabric, and then further react the polyester-cotton fabric with different biomass acids. , finishing the biomass acid on the surface of the modified polyester-cotton fabric for use;
S3、将S2中所制涤棉织物分别喷涂不同的金属离子溶液，使其与生物质酸发生络合，从而制得一种反应型丝胶蛋白与金属离子络合生物质酸的阻燃涂层涤棉织物。S3. The polyester-cotton fabrics prepared in S2 are sprayed with different metal ion solutions to make them complex with biomass acid, so as to obtain a flame retardant coating of reactive sericin and metal ions complexed with biomass acid. Layer polyester cotton fabric.
优选地，所述步骤S1中，等离子处理的处理时间为3-20min。Preferably, in the step S1, the treatment time of the plasma treatment is 3-20 min.
优选地，所述步骤S1中，涤棉织物中涤纶的含量为5％-100％。Preferably, in the step S1, the content of polyester in the polyester-cotton fabric is 5%-100%.
优选地，所述步骤S2中，强氧化剂为高碘酸钠、次氯酸钠、双氧水的一种或多种。Preferably, in the step S2, the strong oxidant is one or more of sodium periodate, sodium hypochlorite, and hydrogen peroxide.
优选地，所述步骤S2中，的强氧化剂溶液的浓度为5g/L-20g/L。Preferably, in the step S2, the concentration of the strong oxidant solution is 5g/L-20g/L.
优选地，所述步骤S2中，丝胶蛋白的含量为10-100g/L。在涤棉织物表面的负载量为20-60g/m2。Preferably, in the step S2, the content of sericin is 10-100 g/L. The loading on the surface of the polyester-cotton fabric is 20-60 g/m 2 .
优选地，所述步骤S2中，生物质酸水溶液的含量为1g/L-10g/L。在涤棉织物表面的负载量为1-10g/m2。Preferably, in the step S2, the content of the biomass acid aqueous solution is 1 g/L-10 g/L. The loading on the surface of the polyester-cotton fabric is 1-10 g/m 2 .
优选地，所述步骤S2中，生物质酸为海藻酸、丹宁、植酸的一种或多种。Preferably, in the step S2, the biomass acid is one or more of alginic acid, tannin and phytic acid.
优选地，所述步骤S3中，不同金属离子包括：Fe3+、Mg2+、Cu2+、Ba2+、Co2+、Ni2+等金属离子中的一种或多种，所述金属离子溶液浓度为1g/L-10g/L，所述金属离子溶液的喷涂量为1g/m2-10g/m2。Preferably, in the step S3, different metal ions include: one or more of metal ions such as Fe 3+ , Mg 2+ , Cu 2+ , Ba 2+ , Co 2+ , Ni 2+ , etc. The concentration of the metal ion solution is 1 g/L-10 g/L, and the spraying amount of the metal ion solution is 1 g/m 2 -10 g/m 2 .
一种基于反应型丝胶蛋白与金属离子络合生物质酸阻燃涤棉，使用任一项所述的方法制备得到。A flame retardant polyester cotton based on reactive sericin and metal ions complexed with biomass acid, prepared by using any one of the methods.
本发明核心思想是提供一种生物质蛋白与金属离子络合生物质酸阻燃织物的制备方法，首先利用等离子处理对织物表面的油脂、浆料以及其他类杂质进行前期处理，增大织物表面的活性基团，然后用高碘酸钠溶液对涤棉织物表面进行氧化处理，增加涤棉织物表面的-CHO基团，利用席夫碱反应将丝胶蛋白与改性涤棉织物化学键合，再与生物质酸反应，最终喷涂不同金属离子进行络合反应，经金属离子与生物质酸发生离子交换和络合反应后即得到不同金属离子络合的阻燃整理剂，这种通过生物质原材料来制备阻燃整理剂的方法，原料易得，方法简单，并创新性地利用蛋白质与生物质酸的协效阻燃行为，消除了目前磷系阻燃剂在制备和使用时所产生的甲醛、双氯甲醚等致癌物质，同时利用化学键将阻燃整理剂键接再涤棉织物表面，增加了涤棉织物的阻燃耐久性和牢固度，有望为环保、绿色、低毒阻燃整理剂提供一种设计新方法。The core idea of the present invention is to provide a preparation method of biomass protein and metal ion complexed biomass acid flame retardant fabric. First, the oil, slurry and other impurities on the surface of the fabric are pre-treated by plasma treatment to increase the surface of the fabric. Then, the surface of the polyester-cotton fabric is oxidized with sodium periodate solution to increase the -CHO group on the surface of the polyester-cotton fabric, and the sericin is chemically bonded to the modified polyester-cotton fabric by the Schiff base reaction. Then it reacts with biomass acid, and finally sprays different metal ions for complexation reaction. After ion exchange and complexation reaction between metal ions and biomass acid, a flame retardant finishing agent complexed with different metal ions is obtained. The method of preparing flame retardant finishing agent from raw materials has the advantages of easy availability of raw materials, simple method, and innovative use of the synergistic flame retardant behavior of protein and biomass acid, which eliminates the current generation of phosphorus-based flame retardants during the preparation and use. Formaldehyde, diclofenac and other carcinogens, and at the same time use chemical bonds to bond the flame retardant finishing agent to the surface of polyester-cotton fabrics, which increases the flame-retardant durability and firmness of polyester-cotton fabrics, and is expected to be environmentally friendly, green, and low-toxic flame retardant. Finishing agents offer a new approach to design.
与现有技术相比，本发明具有如下有益效果：Compared with the prior art, the present invention has the following beneficial effects:
一、基于传统阻燃整理剂的基础，本发明使用了创新的原料。具体来说，传统的阻燃整理剂在使用和制备过程中都会释放有毒气体和致癌物。随着社会环保意识的增强，研究人员对无毒且环境友好的阻燃剂关注度随之升高，而本发明所使用的丝胶蛋白和生物质酸可解决使用过程中甲醛等有害气体的释放等问题，且其来源广泛，且在是一种环境友好型阻燃整理剂。1. Based on the traditional flame retardant finishing agent, the present invention uses innovative raw materials. Specifically, traditional flame retardant finishes release toxic gases and carcinogens during use and preparation. With the enhancement of social awareness of environmental protection, researchers pay more attention to non-toxic and environmentally friendly flame retardants, and the sericin and biomass acid used in the present invention can solve the problem of harmful gases such as formaldehyde during use. It has a wide range of sources and is an environmentally friendly flame retardant finishing agent.
二、本发明使用的丝胶蛋白，其占蚕丝量的20％～30％，含大量侧链带亲水基团的氨基酸如丝氨酸、天冬氨酸等，易溶于水中。本发明所使用的阻燃剂原料为工业生产中的废弃原料，可有效利用丝胶等废弃物，变废为宝，对环境保护和资源的循环利用具有重要的意义。2. The sericin used in the present invention accounts for 20% to 30% of the amount of silk, and contains a large number of amino acids with hydrophilic groups in the side chain, such as serine, aspartic acid, etc., and is easily soluble in water. The flame retardant raw material used in the present invention is the waste raw material in industrial production, which can effectively utilize wastes such as sericin, turn waste into treasure, and has great significance for environmental protection and resource recycling.
三、相比于传统的层层自主装技术，本发明在工业应用过程中不需要大量的人工操作，在应用过程中，减少了不同溶液之间的交叉污染风险，通过化学键合的方式增加阻燃剂在涤棉织物表面的附着力，增加了阻燃织物的耐用性。3. Compared with the traditional layer-by-layer self-assembly technology, the present invention does not require a lot of manual operations in the process of industrial application. During the application process, the risk of cross-contamination between different solutions is reduced, and the resistance is increased by chemical bonding. The adhesion of the flame retardant on the surface of the polyester-cotton fabric increases the durability of the flame-retardant fabric.
四、本发明使海藻酸钠与金属离子之间发生交联络合反应，形成交联络合物在一定程度上增加了涤棉燃烧过程的成炭效应，减缓了涤棉燃烧时的熔滴现象，从增加成炭、减缓熔滴两个方面对涤棉织物的燃烧过程经行强化，在很大程度上提高了涤棉的阻燃效果。Fourth, the present invention makes the cross-linking reaction occur between the sodium alginate and the metal ions, and the formation of the cross-linking complex increases the carbon-forming effect of the polyester-cotton combustion process to a certain extent, and slows down the melting drop phenomenon when the polyester-cotton is burned. The combustion process of polyester-cotton fabrics is strengthened from the two aspects of increasing carbon formation and slowing down melting droplets, which greatly improves the flame-retardant effect of polyester-cotton fabrics.
附图说明Description of drawings
图1为化学键接过程；Figure 1 shows the chemical bonding process;
图2为金属离子与海藻酸络合反应示意图；Fig. 2 is the schematic diagram of complexation reaction of metal ion and alginic acid;
图3涤棉表面喷涂不同金属离子的垂直燃烧图；Fig. 3 Vertical combustion diagram of different metal ions sprayed on the surface of polyester cotton;
图4涤棉络合Ca2+离子水洗前后的垂直燃烧图；Fig. 4 Vertical combustion diagram of polyester-cotton complexed with Ca 2+ ions before and after washing;
图5纤维表面EDS元素含量。Figure 5. EDS element content on fiber surface.
具体实施方式Detailed ways
实施例Example
制备基于反应型丝胶蛋白与金属离子络合生物质酸阻燃涤棉，选用丝胶蛋白与海藻酸为阻燃整理剂、涤棉作为被处理织物进行具体实施。The preparation is based on reactive sericin and metal ions complexed with biomass acid flame retardant polyester cotton, and sericin and alginic acid are used as flame retardant finishing agents, and polyester cotton is used as the treated fabric for specific implementation.
结合附图1-5，将涤棉置于等离子处理机中，对涤棉表面的浆料和各类添加剂进行等离子处理三分钟，然后用5g/L高碘酸钠溶液对涤棉织物表面选择性氧化处理，利用席夫碱反应将15g/L的丝胶蛋白与改性涤棉织物化学键合，然后将涤棉织物与海藻酸钠和植酸混合溶液进一步发生静电吸附，烘干后在上述处理的涤棉织物表面喷涂浓度为5g/L的Fe3+、Mg2+、Cu2+、Ba2+、Co2+、Ni2+等金属离子，使金属离子在涤棉表面的负载量为2g/m2，使其与海藻酸、植酸发生络合，生成不同的络合盐，从而制得一种基于反应型丝胶蛋白与金属离子络合生物质酸阻燃涤棉。In conjunction with the accompanying drawings 1-5, the polyester-cotton is placed in a plasma treatment machine, and the slurry and various additives on the surface of the polyester-cotton are subjected to plasma treatment for three minutes, and then the surface of the polyester-cotton fabric is selected with a 5g/L sodium periodate solution. 15g/L sericin was chemically bonded to the modified polyester-cotton fabric by Schiff base reaction, and then the polyester-cotton fabric was further electrostatically adsorbed with the mixed solution of sodium alginate and phytic acid. The surface of the treated polyester-cotton fabric was sprayed with metal ions such as Fe 3+ , Mg 2+ , Cu 2+ , Ba 2+ , Co 2+ , Ni 2+ at a concentration of 5g/L, so that the loading of metal ions on the surface of the polyester-cotton fabric was increased. It is 2g/m 2 , which is complexed with alginic acid and phytic acid to generate different complex salts, thereby preparing a kind of flame retardant polyester cotton based on reactive sericin and metal ions complexed with biomass acid.
对各类织物经行阻燃处理之后，并用耐水洗性测试、水平燃烧测试、涤棉前后比重等测试方法来表征阻燃效果。After all kinds of fabrics are treated with flame retardant, the flame retardant effect is characterized by test methods such as washing resistance test, horizontal burning test, and specific gravity of polyester and cotton.
表一：阻燃整理涤棉的比重、极限氧指数和阻燃级别数据Table 1: Specific gravity, limiting oxygen index and flame retardant grade data of flame-retardant finishing polyester-cotton
取相同条件下用层层自主装和化学键接的阻燃织物进行对比，将不同方法处理的涤棉放入水中持续搅拌30分钟，放入烘箱中干燥，用极限氧指数仪、热重分析仪测试不同涤棉的阻燃性能数据进行分析，对比两种处理方式的耐久性。Take the flame-retardant fabrics that are self-assembled and chemically bonded layer by layer under the same conditions for comparison, put the polyester-cotton treated by different methods into water and continue stirring for 30 minutes. The flame retardant performance data of different polyester cottons were tested for analysis, and the durability of the two treatments was compared.
取不同浓度的高碘酸钠溶液，对涤棉织物经行氧化处理，然后放入10g/L的丝胶蛋白溶液中发生席夫碱反应，制得不同氧化程度的反应型丝胶蛋白涤棉织物，用EDS测量不同的氮含量进行对比，以此来确定涤棉最佳的氧化浓度。防止过度氧化损伤纤维的力学结构。Take sodium periodate solutions of different concentrations, oxidize polyester-cotton fabrics, and then put them into 10g/L sericin solution for Schiff base reaction to obtain reaction-type sericin polyester-cotton with different degrees of oxidation. Fabrics were compared with different nitrogen contents measured by EDS to determine the optimum oxidation concentration of polyester-cotton. Prevents excessive oxidative damage to the mechanical structure of fibers.
取同丝胶蛋白与海藻酸钠处理的涤棉织物，然后浸泡在不同的浓度的金属离子溶液中，发生络合反应，以此来比较不同浓度金属离子络合反应对涤棉织物熔滴现象的抑制程度，用垂直燃烧的方式测量不同金属浓度处理涤棉的熔滴现象。找到最佳络合浓度。The polyester-cotton fabrics treated with sericin and sodium alginate were taken, and then immersed in metal ion solutions of different concentrations, and complexation reaction occurred, in order to compare the effect of metal ion complexation reaction of different concentrations on the melting drop phenomenon of polyester-cotton fabrics. The degree of inhibition was measured by vertical burning method to measure the droplet phenomenon of polyester-cotton treated with different metal concentrations. Find the optimal complexing concentration.
实施例、对比例中涉及的表征方法说明：Description of the characterization methods involved in the examples and comparative examples:
通过场发射扫描电镜SEM(德国Zeiss公司ULTRA 55)观察所述阻燃织物燃烧前后的表面形貌以及燃烧前后的产物元素。The surface morphology of the flame-retardant fabric before and after combustion and the product elements before and after combustion were observed by field emission scanning electron microscope SEM (
通过极限氧指数仪来测量不同金属络合生物质酸的极限氧指数，以此来判断不同金属离子络合生物质酸处理的棉织物阻燃效果。The limiting oxygen index of different metal-complexed biomass acids was measured by a limiting oxygen index instrument to judge the flame retardant effect of cotton fabrics treated with different metal-ion-complexed biomass acids.
通过耐水性测试来测量阻燃整理剂在涤棉织物表面的耐水洗性、耐久性。以此来判断阻燃整理在涤棉织物表面的附着效果。The water resistance and durability of the flame retardant finishing agent on the surface of polyester-cotton fabrics were measured by the water resistance test. In this way, the adhesion effect of flame retardant finishing on the surface of polyester-cotton fabric is judged.
通过EDS来观察涤棉织物表面元素含量，以此来确定最佳氧化处理时间和最佳含量。The element content on the surface of the polyester-cotton fabric was observed by EDS to determine the optimal oxidation treatment time and content.
实施例仅代表本发明实施内容的一部分，并不用于限制本发明，依然可对所述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换均属于本发明范围之内。The embodiments only represent a part of the implementation content of the present invention, and are not intended to limit the present invention. It is still possible to modify the technical solutions recorded in the embodiments, or to perform equivalent replacements for some of the technical features, which are within the scope of the present invention. .
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