Predicting Bursting Strength Behavior of Weft Knitted Fabrics Using Various Percentages of Cotton, Polyester, and Spandex Fibers

The bursting strength is an essential quality parameter of knit fabric. The fabric structure, weight, types of fibers, and fiber blend proportion influence the bursting strength parameter. The tenacity of polyester fiber is better than cotton and spandex. The study focused on predicting knit fabric bursting strength test value using different fibers (cotton, polyester, and spandex) with varying percentages of the blend ratio. This study used fifteen categories of blended fabrics. The Pearson Correlation and the hypothetical ANOVA regression analysis were conducted to do the statistical significance test. The experimental result reveals that the bursting strength test result increased with the increased percentage of polyester and suggested a suitable regression equation. The dominance of the polyester fiber was observed throughout the experiment, i.e., the higher the polyester blend proportion, the higher the bursting strength value. The inclusion of polyester in blends can reduce the cost of fabric. The developed prediction model or equation can help the fabric manufacturer make appropriate decisions regarding getting the expected bursting strength. The researcher hopes that the findings from this study will motivate new researchers, advanced researchers, and the textile manufacturing industry.

Studying the Effect of Polyester Fiber Blend Ratio and Pilling Cycle on Blended Knit Fabrics

Pilling is a severe concern for blended fabrics. The aesthetic look and smoothness are the buyers’ prime requirements. The main focus of the study was to see the pilling behavior from various percentages of polyester fiber blend ratio as well as the different pilling cycles on blended fabrics. The cotton, polyester, and elastane prepared the study fabrics. These fabrics are (90% Cotton/5% Polyester/5% Elastane, 90% Cotton/6% Polyester/4% Elastane, 90% Cotton/7% Polyester/3% Elastane, 90% Cotton/8% Polyester/2% Elastane, and 90% Cotton/9% Polyester/1% Elastane, 85% Cotton/10% Polyester/5% Elastane, 85% Cotton/11% Polyester/4% Elastane, 85% Cotton/12% Polyester/3% Elastane, 85% Cotton/13% Polyester/2% Elastane, and 85% Cotton/ 14% Polyester/1% Elastane, 80% Cotton/15% Polyester/5% Elastane, 80% Cotton/16% Polyester/4% Elastane, 80% Cotton/17% Polyester/3% Elastane, 80% Cotton/18% Polyester/2% Elastane, and 80% Cotton/19% Polyester/1% Elastane). The selected polyester blend ratios were 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18% and 19% respectively. The study used the Martindale pilling tester with 2000, 5000, and 7000 cycles, respectively. The evaluation followed the ISO 12945-2:2000. The study findings are that the polyester fiber blend ratio did not influence the pilling grade on blended fabrics for pilling cycles 2000, and the pilling grade remained constant at 4 - 5. The pilling grade started to deteriorate in pilling cycle 5000 for the fabrics 85%C/10%P/5%E, 85%C/11%P/4%E, 85%C/12%P/3%E, 85%C/ 13%P/2%E, 85%C/14%P/1%E showed the pilling grade 4, and the fabrics made from 80%C/15%P/5%E, 80%C/16%P/4%E, 80%C/17%P/3%E, 80%C/ 18%P/2%E, 80%C/19%P/1%E showed the pilling grade 4, 3, 3, 3, and 3 respectively. For the pilling cycles 7000, the pilling grade further deteriorated for the fabrics 80%C/15%P/5%E, 80%C/16%P/4%E, 80%C/17%P/3%E, 80%C/ 18%P/2%E, 80%C/19%P/1%E showed the pilling grade 3, 3, 2, 2, and 2 respectively. The study finds the dominance of polyester fiber throughout the experiment. The author hopes this study’s outcome will help new researchers, advanced researchers, and the textile industry’s sustainable development research and development team.

Research on the Dyeing Properties of Silk-like Knitted Fabric of Ultra-fine Polyester Fiber

In this paper, dyeing processes of silk-like fabric of ultra-fine polyester fiber are studied through orthogonal experiment, dyeing properties (K/S value, L* value, and C* value) of the fabric are tested under different dyeing conditions (pH value, time, and bath ratlo), and optimum dyeing conditions are arrived at through analysis.

Recovery of Polyester/Cotton Blended Fabrics by Alkali Dissolution

A new type of alkali-soluble polyester/cotton blended yarns was used to knit a compact knitted fabric on a circular weft knitting machine,treated with 5 g/L NaOH solution for 60 min at a temperature of 100℃,and the polyester was completely dissolved.The dissolved polyester could be polymerized again by a polycondensation reaction.After the cotton fibers were opened and combed,the length and mechanical properties of the cotton fibers were tested.The physical and mechanical properties of the separated cotton fibers were good.The chemical structure and crystallinity were analyzed by Fourier transform infrared(FTIR)spectroscopy and X-ray diffraction(XRD)analysis.It could be seen that the chemical structure of cotton fibers was almost unchanged after treatment,and the crystallinity decreased slightly.It provides some reference for the separation and recycling of waste polyester/cotton fabrics.

Finishing Effect on Warmth Property of Cotton/Kapok Blended Knitted Fabric

Nowadays,more and more natural or functional fibers are being investigated due to their utilization in thermal underwear.Kapok fiber is one of the natural cellulosic fibers whose source is the kapok plant. It has hollow body and sealed tail,which exhibits desirable features required for functional textiles of this nature. In this study,cotton / kapok( 80 /20 by mass) blended yarn with two types of yarn size 18. 5 and 14. 8 tex,respectively are knitted into plain stitches. The fabrics are undergone with an optimal preparation plan according to orthogonal design. Then,after dyeing and softening,fabric properties including thermal and water-vapour resistances, wicking property, pilling behaviour, and surface morphology,are tested and scrutinized for their candidacy for thermal underwear. The results showed that cotton / kapok blended fabrics have good thermal resistance which is significantly higher than those of cotton / modal blended fabrics,and the same water vapour resistance compared with cotton / modal blended fabrics which are normally used as underwear. Cotton / modal blended knitted fabrics has better pilling grade than cotton / kapok blended fabrics. Meanwhile, the cotton / kapok blends fabrics have good wicking property. Collectively,it was concluded that cotton / kapok blended fabric was appropriate for thermal underwear. However,the main limitation of these fabrics is their pilling properties.

Bioscouring Knitted Cotton Fabric with an Experimental Pectate Lyase

An experimental pectate lyase enzyme was used to scour knitted cotton fabric and the emphasis was on pectin removal.Using an enzyme dosage of 0.2 g/L at temperature 55℃ and pH 6.35 for 30 min,good scouring properties were obtained.When appropriate concentrations of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid(HEDP)and CaCl2 were added,the percentage pectin removal improved significantly.

Flexural Properties of Weft Knitted Fabric Reinforced Composites

Several different kinds of weft knitted fabrics from glass fiber yarns were used as reinforcement to make fabric/polyester composite laminates. Flexural tests were carried out to examine stress- deflection process and compare the mechanical properties in course and wale directions of these composites. The experimental results indicate that the numbers of load-bearing yarn in course and wale direction and the fabric density are the main factors influencing the ultimate tensile strength and initial elastic modulus of specimens.

Dyeing of S/J Cotton Knit Fabric with Natural Dye Extracts from Green Walnut Shells: Assessment of Mordanting Effect on Fastness Properties

In this study, aqueous extraction method is used because of its high extraction ratio, light fastness and also functional properties. In 1st phase, for dyeing S/J cotton knit fabric with green walnut power ferrous sulfate is considered as a mordant. In this study, three different mordanting methods such as pre-, meta-, and post-mordanting are conveyed the dyeing process with the state of metallic mordant and without metallic salt mordants. In 2nd phase, in dyeing for fixation ferrous sulfate was considered as mordants. Furthermore, the analysis and evaluation of each colour dyed material was done through following two terms for instance CIELAB (L*, a*, and b*) and K/S values. According to AATCC test methods, colour fastness to washing, crocking, perspiration of the dyed samples is determined whereas according to the ISO standard, the colour fastness to light was estimated and tested. When dyeing was carried out on S/J cotton knit fabric through considering optimum parameter like at 80&degC for 60 min and at pH 4 which showed optimum results. From the results we can see, very good wash fastness was obtained while there is no fading of the colour, whereas the outstanding and moderate level of colour fastness to light and crocking is achieved.

Effect of Elastane on Physical Properties of 1×1 Knit Rib Fabrics

Because of wearing and washing the knit rib fabrics are highly vulnerable to lose their dimensional stability.The work investigated the physical properties of 1×1 knit rib fabrics with or without elastane.The fabrics made from 100%cotton yarn were compared with the fabrics made from cotton/elastane(95%/5%)blended yarns by Lisky circular knitting machine.Pilling,shrinkage,spirality,and bursting strength were tested by the ICI pilling test box,Wascator,and TruBurst machine to demonstrate the effect of elastane on fabric properties.Experimental results showed that elastane has a noteworthy impact on the physical properties of 1×1 knit rib fabrics which can make the fabrics more durable and dimensionally stable in practice.

Development of Longer-Lasting Insect Repellence Cellulosic Based Curtain Fabrics

Long lasting insect repellent curtain fabrics were developed and characterized. Different types of fabrics which are generally used in manufacture of curtain fabrics were functionalized with monochlorotriazenyl β-cyclodextrin (MCT-β-CD) then treated with different concentration from permethrin to impart the fabric insect repellent properties. These fabrics were 100% cotton, cotton/viscose, cotton/linen, polyester/cotton, polyester/linen and polyester/viscose blend fabrics. The treated curtain fabrics were evaluated for insect repellent retention capacity against mosquitoes. The repellent efficacy comprises the determination of percent mosquitoes repelled, knockdown and killed (mortality) resulting from exposed mosquitoes to the treated fabric. Results obtained shows that, the insect repellent retention capacity of curtain fabrics functionalized with R-β-CD then treated with permethrin depends on the amount of β-CD moieties on the curtain fabrics, type of fabric and permethrin concentration. Higher action is obtained when the fabric was functionalized with 100 g/L, MCT-β-CD in alkaline medium followed by treatment with 15 g/L permethrin. The results show also that, curtain fabric made of cotton/linen shows highest mosquitoes repellent retention capacity and highest resistance against washing compared with 100% cotton or cotton/viscose or polyester based curtain fabrics. The insect repellent treatment of curtain fabrics did not adversely affect the tensile strength or drapability index of curtain

中国废旧军服面料回收利用的研究现状及发展前景

为促进废旧军服面料的高值化回收利用,总结了国内07式军服的种类及其面料特征,系统分析了目前开纤纺纱法、再生聚酯切片法、涤棉分离技术等废旧军服面料的回收利用方法,并对废旧军服面料回收再利用的发展前景进行展望。分析表明:目前废旧军服面料的回收利用主要聚焦于简单再利用或回收涤纶组分制备高值再生聚酯切片,较少关注军服面料中其余组分的高值回收利用。针对废旧军服面料中含量相对较高的涤棉混纺面料,采用有效的涤棉分离技术高效分离涤纶和棉纤维,并以此作为原料分别制备再生聚酯切片和再生溶解浆,进一步以再生棉浆粕为原料制备再生纤维素产品将非常有前景。因而,开发高效的涤棉分离、废旧涤纶和棉纤维的高值化利用技术是实现废旧军服面料综合利用的重要发展方向。

速练剂在棉针织物冷轧堆前处理中的应用

探讨速练剂KR-9组合在棉针织物冷轧堆前处理加工中的应用,针对棉针织物冷轧堆前处理加工进行相关产品的性能检测试验,研究棉针织物冷轧堆前处理加工配套助剂的相关技术指标要求。结果表明,在棉针织物冷轧堆加工中使用速练剂KR-9组合后直接水洗,其白度达到78.8%,瞬时毛效值为5.20cm,保证了前处理半成品的匀透效果,为提高成品的一次成功率提供了有力保障。

壳聚糖基膨胀阻燃涤纶/棉混纺织物的制备及其性能

为得到阻燃且满足实际应用需求的涤纶/棉混纺织物(T/C),选用亚磷酸化壳聚糖(PCS)和γ-哌嗪基丙基甲基二甲氧基硅烷(GP-108)制备阻燃整理剂(PCS/GP),通过一步浸渍法对涤纶/棉混纺织物进行整理,并研究其微观表面形貌、热稳定性能、阻燃性能、拉伸性能以及白度等。结果表明:PCS/GP成功在涤纶/棉混纺织物表面沉积成膜,包裹住涤纶/棉纤维;T/C-PCS/GP呈现典型的涤纶/棉混纺织物二步热降解过程,在700℃时保留有28.5%的残炭量,说明PCS/GP提高了阻燃涤纶/棉混纺织物在高温区的热稳定性能;T/C-PCS/GP的LOI值提升至26.5%,实现了垂直燃烧测试中的离火自熄,残炭扫描电镜照片表明,PCS/GP的沉积改善了涤纶/棉混纺织物燃烧时存在的“支架”效应;T/C-PCS/GP的热释放速率峰值和火灾蔓延指数较T/C分别降低了20%和40%,表明其火灾危险性大幅度降低;锥形量热测试后的残炭电镜照片表明,T/C-PCS/GP能够保留完整的织物编织结构,残炭表面存在明显的膨胀炭层,与垂直燃烧测试结果相符;热重红外测试结果表明,T/C-PCS/GP分解提前,主要影响棉组分热降解并促进其成炭,而高温区的红外谱图表明,在致密炭层的保护下,T/C-PCS/GP的热降解得到抑制。T/C-PCS/GP与T/C-PCS相比,断裂强力提升17%,其断裂强力与T/C的断裂强力相差不大;同时,GP-108的使用改善了T/C-PCS的黄变问题,提升了T/C-PCS/GP的白度。然而,阻燃样品耐久性较差,需要后续改进。

磷酸锆载银涤纶长丝针织物性能研究

为了研究磷酸锆载银涤纶长丝纬编针织物的性能,文章采用8.33 tex/72 f(75 D/72 f)磷酸锆载银涤纶长丝及14.80 tex精梳棉纱进行添纱平纹针织物的编织。参照国家标准对针织物的胀破强度、透湿性能和抗菌性能进行测试,分析磷酸锆载银涤纶长丝在添纱平纹针织物中的应用效果。结果表明,抗菌涤纶长丝作为地纱、棉纱作为面纱的添纱平纹针织物,其透湿性能远高于普通的涤棉织物,对金黄色葡萄球菌和大肠杆菌两个菌种的抗菌率可以达到99.00%。

智能导湿涤棉织物的制备及温敏湿热管理行为

以N,N-二甲基(甲基丙烯酰氧乙基)氨基丙磺酸内盐为单体,采用紫外光照射法制备具有高临界溶解温度(UCST)的聚合物PDMAPS,再将其喷涂至疏水改性涤棉织物表面,得到温敏导湿涤棉织物。研究了PDMAPS的结构和温敏性,并系统评价温敏导湿涤棉织物的微观结构、温敏亲/疏水性转变及温敏透湿性。结果表明:PDMAPS具有可逆的温敏亲/疏水性转变功能,在20℃时(UCST),喷涂PDMAPS一侧转为亲水性,而未喷涂PDMAPS一侧仍为疏水性,从而构建润湿性梯度,透湿量可提升至5497.5 g/(m^(2)·24 h),显示出优异的温度自适应湿热管理功能。

涤棉双层针织物的轻度亲疏水整理研究

为提升涤棉双层针织物的亲肤感以及吸湿快干能力,选取双层针织物,内层为疏水层,由16.67 tex/144 f(150 D/144 f)十字截面涤纶长丝编织而成,外层为亲水层,由14.67 tex纯棉纱线编织而成,采用吸湿排汗整理剂TM对织物疏水面进行轻度亲水整理,并采用疏水整理剂Nuva N1802 liquid对织物亲水面进行轻度疏水整理。研究不同浓度的亲疏水整理剂对针织物吸湿快干性能的影响。测试透气率、透湿率、芯吸高度、干燥速率、动态水分传递等性能。结果表明:当涤纶表面采用0.1%亲水整理剂和棉层采用0.1%疏水整理剂,吸湿快干效果达到最优,透湿性和芯吸高度的提升增加了人体的亲肤感。

涤棉针织物练染一浴工艺

针对涤棉针织物染整工艺流程长、耗水耗能高、生产效率低等问题,采用RY236对涤棉针织物进行练染一浴加工,分别讨论了双氧水用量、练染浴pH、保温时间及RY236用量对纯棉针织物前处理效果以及纯涤针织物染色性能的影响。优化后的练染一浴工艺:双氧水用量为8 g/L,pH为5.5,RY236用量为1 g/L,染色温度为130℃,保温30 min。与传统工艺相比,该工艺能够降低生产成本,提高生产效率。

BCI棉/再生涤混纺针织织物染整工艺

采用活性染料/分散染料对BCI棉/再生涤混纺针织织物进行染色,比较不同染色工艺的得色效果、耐汗渍色牢度、耐皂洗色牢度、耐摩擦色牢度以及耐光色牢度等指标,筛选BCI棉/再生涤混纺针织织物的大生产工艺,从而减少实际大生产时染色带来废水对环境造成的污染,以优化染色质量与成本。实验结果表明:选择方案4#进行印染加工更加节约用水成本、时间成本、用电成本。染色织物耐干摩擦色牢度可达4~5级,耐湿摩擦色牢度可达3~4级,耐皂洗色牢度可达4~5级,耐汗渍色牢度达到4~5级,具有生产可行性。

精梳工艺路线对涤棉混纺面料风格影响

为了探讨不同精梳加工路线对涤棉混纺面料风格的影响,将涤纶与棉纤维分别精梳后按照65/35进行混纺制成涤棉混纺精梳纱,同时将普梳涤纶与精梳后的棉纤维进行混纺制成涤棉混纺半精梳纱。将涤棉混纺精梳纱和涤棉混纺半精梳纱利用相同的织造及染整工艺分别制成涤棉混纺精梳面料和涤棉混纺半精梳面料,利用KES织物风格仪测试两种面料的拉伸、剪切、弯曲、压缩、表面等风格特征。结果表明:与涤棉混纺半精梳面料相比,涤棉混纺精梳面料的各风格特征均有改善,其中变化最显著指标:抗弯刚度减小20%,弯曲滞后距减小17%,压缩比功减小22%,摩擦因数波动减小18%。认为:涤棉混纺精梳面料比涤棉混纺半精梳面料具有更好的柔软性、光滑性、回弹性。

棉针织物铜或锰金属配合物漂白机理

为了阐明金属配合物对棉针织物的漂白机理及性能,研究了多吡啶类铜配合物(CAT-3)与大环多胺类锰配合物(JK500)对棉针织物白度和双氧水(H_(2)O_(2))分解率的影响。结果表明:CAT-3作催化剂时,优化的漂白工艺为NaOH 1.0 g/L、H_(2)O_(2)13 g/L、CAT-32.0 g/L,织物白度为68.97%;JK500作催化剂时,漂白优化工艺为NaOH 2.0 g/L、H_(2)O_(2)13 g/L、JK5002.5 g/L,织物白度为65.92%。75℃处理60 min后,CAT-3/H_(2)O_(2)体系中H_(2)O_(2)分解率达到60.93%,远高于无CAT-3时的12.31%;JK500/H_(2)O_(2)体系中H_(2)O_(2)分解率为19.25%,未加JK500时的分解率为18.18%。CAT-3/H_(2)O_(2)体系的羟基自由基(HO·)荧光检测强度远高于对照组C_(0);JK500/H_(2)O_(2)及其对照组J0体系的HO·荧光强度均较小;超氧自由基(O_(2)^(-)·)是两种催化体系有效的漂白活性成分,而单线态氧(1O2)对织物白度基本无影响。