等离子体处理对棉织物防皱整理效果的影响

研究等离子体处理对用丝素与乙二醛联合整理及树脂整理后棉织物防皱效果的影响。结果表明，等离子体处理能代替防皱整理工艺中的焙烘工序，促进整理剂与纤维间的交联反应，提高棉织物的抗皱性能，防止棉织物的强力损失，减少棉织物游离甲醛释放量。等离子体处理后再经焙烘，可进一步减少棉织物上游离甲醛含量，提高折皱回复角。     

超低甲醛轻薄织物的抗皱免烫整理

轻薄织物经过羟甲基酰胺类化合物的改性体树脂LF-3进行抗皱免烫整理，采用浸轧焙烘工艺，通过测试整理织物的抗皱效果和布面游离甲醛含量等，确定最佳整理配方和工艺条件。     

改善莱赛尔织物洗后平整度的树脂整理

针对莱赛尔织物洗后平整度问题,采用不同类型的树脂对莱赛尔织物进行整理,探讨树脂整理工艺对莱赛尔织物洗后平整度的影响,测定树脂整理后织物的洗后平整度、强力、色变和甲醛含量。确定改善莱赛尔洗后平整度的最佳工艺:超低甲醛树脂Fixapret F-AP 60 g/L,130℃焙烘90 s,整理织物游离甲醛含量低于75 mg/kg;无甲醛树脂Arkofix NZK 120 g/L,160℃焙烘60 s,整理织物游离甲醛含量低于20 mg/kg。     

纯棉府绸低甲醛树脂整理工艺

采用低甲醛树脂整理剂对纯棉府绸进行抗皱整理.讨论了树脂用量、pH值、焙烘条件等因素对整理效果和织物性能的影响,优化的工艺条件为:树脂用量80g/L,pH值4.3,焙烘温度155℃,焙烘时间3.5 min,整理后织物的平整度提高、色差减少和强力损失降低.     

超低甲醛树脂的合成与应用

探讨了用多元醇醚化２ Ｄ 树脂合成超低甲醛醚化树脂的工艺条件和影响树脂游离甲醛量的因素。成品树脂的游离甲醛含量＜ ０ ．２ ％ 。应用于棉织物抗皱整理,优化了工艺。整理后的棉织物甲醛释放量仅１７ ．５ ×１０ － ６ ,且具有良好的手感和抗皱性,综合性能优于２ Ｄ 树脂整理品。     

竹原纤维织物抗皱整理的研究

分别采用FS-528超低甲醛防缩免烫树脂和柠檬酸对竹原纤维织物进行抗皱整理,通过对比试验,得出最优整理工艺条件,即FS-528超低甲醛防缩免烫树脂80 g/L、FS-990催化剂25 g/L、906S高效渗透柔软剂30 g/L,焙烘温度155℃,焙烘时间3 min.     

棉织物超低甲醛防缩整理工艺的探讨

采用超低甲醛树脂对棉织物进行防缩整理,通过试验分析树脂用量、催化剂用量、pH、焙烘温度和时间对织物缩水率、顶破强力、甲醛含量及色光的影响,并优化整理工艺条件。结果表明:棉织物防缩整理的优化工艺为:超低甲醛防缩树脂Reacel BA 6040g/L,催化剂MgCl2·H2O20%(对树脂质量),pH为4.5,175℃焙烘60s。在优化工艺条件下整理的棉织物,经纬向缩水率小于3%,甲醛含量低于75×10-6,顶破强力控制在300N以上,仍能保持织物应有的加工及服用性能。     

棉织物低甲醛耐久阻燃整理研究

采用自制的醚化阻燃剂MCFR-201,结合交联剂醚化六羟甲基三聚氰胺树脂(MHMM)对棉织物进行低甲醛阻燃整理.探讨了阻燃整理中阻燃剂、交联剂、催化剂用量以及焙烘温度和时间对阻燃效果的影响,确定了最佳阻燃整理工艺.经测试,整理后的织物具有较好的阻燃效果及耐洗性,皂洗后织物上游离甲醛量可降至100×10-6以下.     

纯棉热熔粘合衬超低甲醛防缩整理

采用改性DMDHEU类超低甲醛树脂RESIN BRT作为整理剂,氯化镁作为催化剂,对纯棉染色热熔粘合衬布进行防缩整理.用中心旋转法设计了树脂用量、整理液pH值和焙烘温度等三个变量、五个水平的20个试验.通过测试甲醛释放量、撕破强力和色差等值,确定了优化的防缩整理工艺:防皱整理树脂RESINBRT 85～90 g/L,氯化镁13 g/L,整理液pH值4.2左右,在温度170℃下焙烘2 min.经检测,产品甲醛释放量小于40 mg/ks,经纬向缩水率小于0.8%,剥离强力19.3 N,达到优等品质量标准.     

棉织物后焙烘整理工艺

根据市场要求，对棉织物后焙烘加工工艺，包括树脂和催化剂的选择，整烫和焙烘条件（整烫温度、蒸汽湿度等）等方面进行工艺分析。试验结果表明，树脂EFR较适用于后焙烘整理工艺，应选择适合低温长焙烘工艺的催化剂。生产实践证明，纯棉稀薄织物采用后焙烘整理工艺，外观平整度经5次水洗后可保持3．5级，甲醛含量〈25mg／kg，可获得满意的后焙烘整理效果。     

直接染料与低甲醛整理剂的——浴染色整理

使用国产直接染料和低甲醛类防皱整理剂对纯棉织物进行一浴法染色整理。主要研究了防皱整理剂、催化剂、焙烘条件、直接染料以及添加剂对染色整理织物的表面深度、折皱回复角以及断裂强度等性能的影响,并且测定和评价了其染色坚牢度。     

Dynamic mechanical properties of decorative papers impregnated with melamine formaldehyde resin

Papers impregnated with melamine formaldehyde based resins are widely used in decorative surface finishing of engineered wood based panels for indoor and outdoor applications. For cost-effective production of high-quality impregnated papers it is of great importance to understand the complex interplay between manufacturing conditions and technological property profile. In the present study, three raw papers from different suppliers were impregnated with melamine formaldehyde resin in an industrial scale experiment to study the influence of some important manufacturing variables on the processability of impregnated papers. As numerical factors the resin loading, the final moisture content and the amount of curing catalyst were systematically varied according to a statistical central composite design. The model papers were analyzed for their rheological and thermal properties using the dynamic mechanical method developed by Golombek. As target values flow time, cure time, curing rate and flexibility were used to calculate quantitative models for the processability of the impregnated papers using response surface methodology. It is shown that the relevant rheological and thermal paper parameters are significantly influenced by the supplier of the raw paper as well as the manufacturing variables.     

棉织物超低醛树脂防缩整理

采用超低醛防缩防皱整理剂LF对棉织物进行防缩整理,探讨了用量、催化剂、pH值及焙烘条件对整理效果的影响,结果表明LF具有优异的防缩效果,且白度高、强力损伤小,整理织物释放甲醛极低。     

棉织物的免烫整理

为消除棉织物免烫整理后的甲醛影响,针对棉织物进行了多元羧酸整理的研究,以降低高温焙烘时织物的泛黄现象,减少整理后废水中的含磷量。以柠檬酸与酒石酸的混合酸作为棉织物免烫整理剂,研究了柠檬酸与酒石酸物质的量比、焙烘工艺条件、催化剂种类及质量浓度、添加剂的质量浓度等对织物整理效果的影响。结果表明：柠檬酸与酒石酸物质的量比为1:1,焙烘温度为180℃,焙烘时间为2min,纳米二氧化硅质量浓度为2g/L,次磷酸钠质量浓度为20g/L,柔软剂LD-5030质量浓度为20g/L时,织物整理效果较佳。     

The influence of curing conditions on properties of melamine modified wood

The curing conditions influence the material properties of wood modified with methylated melamine formaldehyde resin. To identify the most influential parameters, the process conditions were varied separately. The degree of conversion (differential scanning calorimetry; DSC), work in bending, nitrogen fixation, formaldehyde emission, formaldehyde content and content of free formaldehyde were measured to verify the influence of the curing conditions on the material properties. The temperature and duration positively influenced the curing of melamine resin as the DSC results and the nitrogen fixation indicate. However, the relative humidity (RH) had the greatest influence on the material properties: the formaldehyde properties and the work in bending differed most between dry and high RH processes with the latter producing material being less brittle and having lower formaldehyde emissions. It can be derived that DSC measurements, formaldehyde emission and -content are valuable methods to characterize the influence of curing conditions on the material properties. The formaldehyde content in combination with the emission revealed a different formaldehyde release factor for dry and high RH processes. In the future, the curing process conditions can be designed depending on the desired material properties: dry, high temperature processes will lead to more complete curing, whereas hot steam processes can be used for material with low formaldehyde emissions.     

Developments in functional finishing of cotton fibres – wrinkle-resistant,flame-retardant and antimicrobial treatments

Natural fibres, especially cotton, are still the most important kinds of fibres because of their numerous advantages such as high tensile strength, good abrasion resistance, high moisture absorption, quick drying and absence of static problems. However, cotton has poor elasticity and resilience, i.e. poor wrinkle recovery property. It is weakened easily by acids and resin chemicals used in finishing processes. In addition, fabrics made from untreated cotton fibres burn easily with a high flame velocity and are prone to being attacked by mildew and bacteria. Reducing wrinkling, flammability and microbial attacks of cotton fibre have been the major challenge facing the textile industry. The aim of this paper is to provide an overview of the current status of developments in functional finishing of cotton fabrics. Functional finishing agents, especially cross-linking agents, are embedded in cotton fabrics with the aid of acid catalysts, followed by drying and curing at high temperatures. The treated cotton fabrics often suffer from decrease in tensile strength, tear strength, abrasion resistance and sewability with a stiff, harsh and uncomfortable feel. Moreover, chemicals present in finishing agents react in the curing process to form some residues, which may even release free formaldehyde, which is of carcinogenic nature. The amount of formaldehyde remaining in the finished product depends largely on the amount and kind of finishing agents and catalysts used, as well as the curing conditions. Over the last decade, there have been many changes in the textile industry. The importance of environmental issues, which influence the direction of chemical finishing and reshaping the types of speciality chemicals used in textile wet processing, is a dominant theme in the market. Apart from the trend towards the use of environment-friendly chemical finishes, chemicals are being specially formulated for ease of application and high quality finishing. In this paper, the latest developments in textile functional finishing of cotton fabrics are critically reviewed and precisely described. The use of plasma surface treatment is one of the easiest and the most efficient ways to improve post-finishing of cotton fabrics. In general, the active species produced in plasma carry high energy to promote surface functionalisation reactions causing a sputtering or etching effect on cotton fabrics. The altered surface characteristics can still retain inherent advantages of cotton substrates and enhance material properties by incorporating with a large variety of chemically active functional groups. Furthermore, it may be necessary to add a suitable co-reactant to enhance the performance of chemical finishing and minimise the side effects. Recently, some finishing formulations involving catalytic effects induced by co-reactants have been developed. The aim of this paper is to critically and comprehensively examine the existing developments in textiles functional finishing, with special focus on wrinkle-resistant, flame-retardant and anti-microbial finishing of cotton fabrics. In addition, further developments of these finishing processes are discussed.     

脲醛树脂胶的新技术及其应用

介绍瀚森化工公司高效能低固体含量脲醛树脂、快速固化芯层用脲醛树脂、高强度表层用脲醛树脂和低毒脲醛树脂技术。     

树脂固化度对强化木地板性能的影响

通过对强化木地板(“两纸一板”工艺压贴)浸渍纸树脂固化度的测试,分析热压时间长短对浸渍纸树脂固化度的影响,进而分析浸渍纸树脂固化度对地板耐磨性能和甲醛释放量的影响。     

纯棉高档热熔黏合染色衬生产实践

介绍了纯棉热熔黏合染色衬布前处理、染色、防缩整理、粉点涂层等染整生产工艺,研究了防皱整理剂用量、整理液pH值、焙烘温度对整理衬布释放甲醛、撕破强力、断裂强力和色差的影响,确定了较佳的生产工艺。衬布用PE粉涂层后,再经机械预缩整理,生产的热熔黏合衬布经向缩水率-0．6％,纬向缩水率-0．8％,甲醛释放量35．7mg／kg,剥离强力19．3N,都达到了优等品指标值。