Skin-Adhesive Tape versus Interrupted Suture in Episiotomy Skin Repair: Randomized Control Trial

Introduction: The ideal method for perineal repair should be quick, easy to perform and preferably, with minimal pain. Aim: To compare skin adhesive tape and interrupted?absorbable subcuticular suture for episiotomy repair after birth as regard postoperative pain, skin closure time and wound infection. Design: Prospective double-blinded randomized controlled trial. Methods: Three-hundred qualified patients were equally distributed between two groups. Group 1 underwent skin repair with skin adhesive tape, while group 2 underwent the currently traditional method for perineal repair by interrupted suture. Pain was evaluated at 2, 4, 6 and 12 hours after birth then daily until one week using Wong-Baker faces pain rating scale with verbal expression for pain intensity as primary outcome. Skin closure time and wound infection were also evaluated as secondary outcomes. Results: Statistically significant difference in pain was?found at 4 and 6 hours, and 3,?4,?5 and 7 days after perineal repair in favor of the adhesive tape group (p = 0.04 and 0.02 respectively) (p = 0.002, 0.002, 0.003 and 0.001 respectively). No statistically significant difference was found in skin closure time between both groups, and no cases of wound infection occurred in both groups (p = 0.3). Conclusion: Skin adhesive tape may be superior to skin suturing in decreasing pain resulting from perineal repair after birth;however, further studies are needed to assess long-term effects, calculate costs and accurately measure patients’ satisfaction, which were not addressed in this study.

A Comparison of Five Adhesive Tapes for Securing Endotracheal Tube in a Manikin

Background: Adhesive tape is the common method for endotracheal tube (ETT) secured to prevent tube displacement and unplanned extubation in an anesthesia setting. However, it is unclear which tape is superior for ETT fixation among the various tapes used in clinical practice. This study examines the force required to move 2 cm ETT and extubate ETT from an intubation manikin with five different adhesive tapes. Methods: We orally intubated an adult intubation manikin with an inner-diameter 7.5 mm ETT, inflated the cuff to 20 cm H2O. Then we secured ETT with five different adhesive tapes (Transpore tapeTM, Urgosyval tape®, TransporeTM White tape, Multipore tape, DuraporeTM tape) in a conventional fixation method. A digital force gauge was connected to the ETT and pulled in a direction erected to the oral cavity. We measured the force required to move 2 cm ETT and extubate ETT (defined as 5 cm ETT displacement) from the manikin. Data were analyzed with one-way analysis of variance, with P < 0.05. Results: DuraporeTM tape had the largest average force of 2 cm displacement (58.9 ± 5.7N) (P < 0.05). The extubation force of DuraporeTM tape (59.7 ± 4.9N) was larger than Urgosyval® tape (40.4 ± 2.9N) (P < 0.05), TransporeTM tape (48.7 ± 5.1N) (P < 0.05), Transpore WhiteTM tape (48.7 ± 5.1N) (P < 0.05). Conclusion: DuraporeTM tape was superior to the other four tapes (TransporeTM tape, Urgosyval® tape, TransporeTM white tape, Multipore tape) in holding the ETT in place in the manikin.

Pre-placement of adhesive tape around wound sites can prevent air leakage in negative pressure wound therapy procedures

The introduction of negative pressure wound therapy has revolutionized the management of complicated wounds.However,the maintenance of an effective negative pressure environment is difficult in some instances,such as wounds in close proximity to an intestinal stoma or wounds surrounded by external fixations.We found that adhesive tape adheres more easily to itself than to wet skin or uneven surfaces.Therefore,we placed adhesive tape around surgical wounds prior to covering them with foam and sealing them with more tape.As a result of the strong adhesive force between pieces of tape,this method could provide a better environmental seal,even in situations where space is limited.Pre-placed adhesive tape around the wound site prior to foam placement could provide sufficient adhesion to maintain a continuous negative pressure environment during treatment.

Conductive microsphere monolayers enabling highly conductive pressure-sensitive adhesive tapes for electromagnetic interference shielding

Conductive adhesive tape is one kind of electromagnetic interference(EMI)shielding materials for electronic packaging.However,the inferior conductivity of the pressure-sensitive adhesive(PSA)layer results in serious electromagnetic leakage at the conjunctions between the conductive tapes and target objects.Adding conductive fillers is a traditional method for highly conductive adhesive tapes.However,the content of conductive fillers is needed to reach the percolation threshold,which is usually as high as tens of percent.High-content fillers result in significant loss of adhesive property and high fabrication cost.Herein,we introduce a rational architecture of conductive microsphere monolayer(CMM)in the PSA layer.The CMM connects the top and bottom surfaces of the PSA layer and improves its conductivity in the z-direction.Importantly,low contents of conductive microspheres(≤5%(mass fraction,w))can achieve the target of conductivity improvement,but not result in the serious loss of the adhesive property.Therefore,the strategy of CMMs can balance the tradeoff between the conductivity and the adhesive property of conductive PSA tapes.Finally,we demonstrate the superior EMI shielding performance of as-made conductive adhesive tapes,indicating their potential applications as the advanced EMI shielding materials in the electronic packaging.

Highly Stretchable Shape Memory Self-Soldering Conductive Tape with Reversible Adhesion Switched by Temperature

With practical interest in the future applications of next-generation electronic devices,it is imperative to develop new conductive interconnecting materials appropriate for modern electronic devices to replace traditional rigid solder tin and silver paste of high melting temperature or corrosive solvent requirements.Herein,we design highly stretchable shape memory self-soldering conductive(SMSC)tape with reversible adhesion switched by temperature,which is composed of silver particles encapsulated by shape memory polymer.SMSC tape has perfect shape and conductivity memory property and anti-fatigue ability even under the strain of 90%.It also exhibits an initial conductivity of 2772 S cm^(−1) and a maximum tensile strain of~100%.The maximum conductivity could be increased to 5446 S cm^(−1) by decreasing the strain to 17%.Meanwhile,SMSC tape can easily realize a heating induced reversible strong-to-weak adhe-sion transition for self-soldering circuit.The combination of stable conductivity,excellent shape memory performance,and temperature-switching reversible adhesion enables SMSC tape to serve two functions of electrode and solder simultaneously.This provides a new way for conductive interconnecting materials to meet requirements of modern electronic devices in the future.

3M^(TM) Acrylic Foam Tape 5363在轨道车辆按钮开关上的脱胶分析及工艺优化

随着中国轨道交通的发展,越来越多的轨交产品走出国门、走向世界,其中以地铁门系统最具特点。按钮开关作为门系统上的关键电子产品之一,有控制开、关门的作用,在国外被广泛采用到门系统上。其中设有盲文的按钮开关,因充分考虑特殊人群出行,深受国外客户的青睐。按钮开关盲文盖板粘接的可靠性就显得至关重要,要考虑列车不同的运行环境及各种外界因素,否则就会因为粘接不好,导致盲文盖板翘边或者脱落,引起客户的投诉和不满。企业不得不进行国外整改返修,耗费巨大的人力物力成本,也为公司带来巨大的质量损失。针对盲文盖板出现的粘接问题,对工艺路线进行总结优化,从源头上解决问题。

接枝石油树脂提高热熔膜与不锈钢的界面粘接力

在海缆、冻土等环境下,通讯光电缆要求使用高耐腐蚀的金属/塑料复合带,但工业上还存在不锈钢/塑料复合带界面难粘接的难题。文中通过熔融接枝法成功制备了C_(5)及C_(9)石油树脂接枝马来酸酐(C_(5)-g-MAH,C_(9)-g-MAH),将其引入乙烯-丙烯酸共聚物/线型低密度聚乙烯(EAA/LLDPE)热熔膜并与不锈钢基板热贴合,当C_(5)-g-MAH的用量为30 phr时,不锈钢/塑料复合带的剥离强度最优,在泡水测试前后分别达到了28.6 N/cm与15.2 N/cm。接触角测试表明,C_(5)-g-MAH可有效降低EAA/LLDPE热熔膜与不锈钢基板间的表面张力,促进热熔膜在金属表面的贴合。通过差示扫描量热分析、熔体流变行为分析发现,C_(5)-g-MAH可以与EAA/LLDPE热熔膜有效地相容,同时降低热熔膜的熔融温度、活化分子链段,提高对不锈钢表面浸润性的同时增加粘接位点,使得热熔膜与不锈钢基板的界面粘接力大大提升。

PBAT基生物降解胶带的制备及性能研究

以生物降解树脂聚对苯二甲酸己二酸丁二醇酯(PBAT)、聚乳酸(PLA)和硅灰石纤维为主要原料制备得到PBAT/PLA/硅灰石纤维复合材料,以该复合材料为原料,采用吹膜工艺制备得到PBAT基生物降解基材层,选取3种压敏胶,考察不同涂胶厚度对胶带初黏力等性能的影响,同时进行湿热老化实验,考察环境因素对胶带材料的影响。研究结果表明,环保压敏胶综合效果最好,涂胶厚度20μm时,180°剥离强度为4.92 N/cm,初黏力达到18号,指标远超行业标准要求。

Ring-Opening Copolymerization of Biorenewable δ-Caprolactone with trans-Hexahydro-(4,5)-benzofuranone toward Closed-Loop Recyclable Copolyesters and Their Application as Pressure- Sensitive Adhesives

Copolymerization as an efficient strategy can provide an opportunity to create new closed-loop recyclable polymeric materials with tailored properties that are generally inaccessible to the individual homopolymers.In this contribution,the bulk ring-opening copolymerization of bio-renewable-caprolactone and trans-hexahydro-(4,5)-benzofuranone was achieved to produce closed-loop recyclable copolyesters by using an organobase/urea binary catalyst at room temperature.The obtained copolyesters exhibited composition-dependent thermal properties.Remarkably,the obtained copolyesters were able to depolymerize back to recover the corresponding monomers under mild conditions.

生物降解包装胶粘带的研究及应用进展

废旧快递塑料包装从某种意义上说已经成为新型污染源,引起政府和民众的广泛关注。相关政策已将不可降解塑料胶粘带列入禁限塑名录。作为其绿色替代产品的生物降解包装胶粘带,成为市场推广的重要产品和研究的热点方向。本文综述了生物降解包装胶粘带的研究及应用进展,从定义、分类、应用现状和研究进展等方面进行了全面阐述。

聚乳酸胶带的设计制备及其可降解性能研究

在快递行业快速发展的时代,对于胶带的需求量日益增加。常用的聚酯膜和聚丙烯膜由于降解性差和回收费用高等问题,开发环境友好型材料已成为当下的重要任务之一。聚乳酸(Polylactic Acid,PLA)作为一种来源于可再生资源的生物可降解高分子材料,具有良好的生物相容性和生物降解性,在包装材料、医疗器械等领域展示出巨大的应用潜力。本研究设计制备了一种新型的可降解的聚乳酸胶带,采用高聚乳酸作为背材,低聚乳酸衍生物作为增粘剂,显著提高了胶带的可降解性。所制备的胶带7天降解率可达到69%,45天降解率能达到95%。通过探讨不同的胶带背材以及背材的厚度对粘接性能以及生物可降解性的影响,为环保型粘接产品的研发提供参考。

精品多胶粉云母带概述

当今我国大型高压发电机定子线棒主绝缘采用国产F级多胶桐马环氧玻璃粉云母带,经机械连续包绕,应用模压固化工艺而成,具有近30余年的运行业绩和经验,是值得信赖的。从而要求我们更要打造多胶粉云母带精品,确保质量稳定,并应不断发展新品种。

包装方式对压敏胶带剥离强度保持率的影响

采用一种3M压敏胶带分别贴合3类离型膜,以3M压敏胶带的180°剥离强度为性能评估指标,考察普通包装方式下,不同离型膜对3M压敏胶带剥离强度随放置时间的变化;考察不同包装方式条件下,胶带随放置时间的剥离强度变化;考察23℃,90%RH下,离型膜对3M压敏胶带剥离强度随放置时间的变化。研究发现,在普通包装下,P53-MBR能够使3M胶带剥离强度保持最佳效果;在真空袋+干燥剂的包装条件下,3M压敏胶带贴合离型膜P53-MBR放置不同的时间后,胶带的剥离强度保持率最高;在23°,90%RH下,搭配P53-MBR对3M胶带的剥离强度影响更小。结果表明,3M压敏胶带较为理想的贮存条件是隔绝空气中的水和氧,P53-MBR是3M压敏胶带搭配最佳的离型膜,这对3M压敏胶加工成品出货具有现实意义。

门外条双面胶带在线黏贴工艺与质量控制

为了解决双面胶带与密封条的脱胶和表面褶皱问题,本文首先分析了双面胶带黏贴机理,得出影响胶带与密封条表面之间黏接强度的主要因素。接着对双面胶带与密封条在线黏贴工艺路线进行了研究,密封条预处理和胶带黏贴是在线黏贴的关键工艺。最后讨论了双面胶带在线黏贴质量控制点,其中黏贴参数是保障黏接强度的重要控制点。

煤矿带式输送机胶带异物识别技术研究

在煤矿生产中,带式输送机是一种关键的物料运输设备,用于在矿区内部输送煤炭及其他材料。然而,输送过程中常会出现金属块、石块等异物混入,可能会导致设备损坏、运输效率下降甚至安全事故发生。因此,研究能够有效识别并处理这些异物的技术,对保障煤矿生产的安全和连续性至关重要。文章介绍煤矿带式输送机的基本工作原理、输送带异物的常见类型和来源,继而分析当前异物识别技术的局限性,阐述新型异物识别技术,包括数据采集与预处理、特征提取技术、模式识别与机器学习应用等。

医用胶带结构及热变性研究

采用中红外(MIR)光谱和变温中红外(TD-MIR)光谱,对医用胶带(包括基材及胶粘剂)的结构及热变性进行了研究。结果表明:基材结构的红外吸收模式主要包括νasCH2-基材结构、νsCH2-基材结构、νC=O-基材结构、δCH2-基材结构、δsCH3-基材结构和ρCH2-基材结构,基材的主要化学结构为乙烯-醋酸乙烯酯共聚物;胶粘剂结构的红外吸收模式包括νasCH3-胶粘剂结构、νasCH2-胶粘剂结构、νsCH3-胶粘剂结构、νC=O胶粘剂结构、δasCH3-胶粘剂结构、δsCH3-胶粘剂结构、νasC-O-C-胶粘剂结构和νsC-O-C-胶粘剂结构,胶粘剂的主要化学结构为聚甲基丙烯酸甲酯。随着测定温度的升高,基材及胶粘剂结构主要官能团对应的红外吸收频率及强度均有明显的改变。

虾青素基无氟超疏水彩色颗粒合成及其着色抗湿胶布的制备

通过对虾青素、虾青素/茜素及虾青素/指甲花醌色素进行修饰处理,在共轭色素上原位生长超支化聚合物纳米级结构,以构筑虾青素基无氟超疏水彩色颗粒。基于热黏合法制备出具有彩色外观以及自清洁特性的着色抗湿胶布,并在麻布扭面、塑料凹面、玻璃凸面和陶瓷V面进行黏贴性应用。采用红外光谱、X射线衍射谱图、表面元素含量检测等手段,对虾青素基无氟超疏水彩色颗粒及其着色抗湿胶布进行了化学信息表征,通过扫描电子显微镜和透射电子显微镜对彩色颗粒的微观结构及其组成进行了观察。将着色抗湿胶布与商品化透明胶带进行对比,发现前者具有更耐久的黏贴性能。

壮药葫芦茶在血透双腔导管周围皮肤胶布过敏中的应用效果

目的观察壮药葫芦茶在血透双腔导管周围皮肤胶布过敏中的应用效果。方法选取2019年10月—2020年11月广西中医药大学第一附属医院收治的血透双腔导管周围皮肤胶布过敏患者120例,按照随机数字表法分为观察组和对照组各60例。对照组患者给予常规换药消毒,观察组患者给予壮药葫芦茶溶液擦拭。比较2组患者干预前、干预后4 h、24 h的疼痛程度、皮肤感染面积消退情况及皮肤感染情况。结果干预后4 h、24 h,2组患者疼痛程度评分均低于治疗前,且观察组患者均低于对照组,差异均有统计学意义(P<0.01);2组患者皮肤感染面积消退情况优于干预前,且观察组患者优于对照组,差异均有统计学意义(P<0.01)。观察组患者皮肤感染级别低于对照组,差异有统计学意义(Z=21.760,P<0.001)。结论血透双腔导管周围皮肤胶布过敏者选择壮药葫芦茶溶液干预,可有效减轻疼痛,促进皮肤消退,降低感染率,值得临床推广应用。

3M胶布用于动脉穿刺置管术护理管理实践

目的探讨3M胶布在动脉穿刺置管术护理管理中的应用效果。方法选取医院2019年2月至2021年2月收治的行动脉穿刺置管术患者120例。采用红蓝球分组法分为对照组和研究组,各60例。对照组采用常规敷料固定动脉穿刺置管方法护理,研究组采用3M胶布敷料固定动脉穿刺置管方法护理,对比两组的护理效果。结果研究组压力性损伤发生率为3.33%,显著低于对照组的15.00%(P<0.05);研究组不良反应发生率为5.00%,显著低于对照组的18.33%(P<0.05);研究组舒适度量表(GCQ)评分显著高于对照组(P<0.05)。结论3M胶布应用于动脉穿刺置管术护理管理,可减少患者的压力性损伤与不良反应,提高患者的舒适度。

自制医用胶带对手汗症术后皮肤切口愈合及瘢痕的影响

目的探究自制医用胶带对手汗症术后皮肤切口愈合及瘢痕的影响。方法选取2018年2月—2022年2月福建省泉州市第一医院胸外科收治的96例手汗症手术患者作为研究对象,按切口处理方法的不同分为对照组(48例)和试验组(48例)。对照组缝合切口采用4-0快薇乔可吸收缝线行简单缝合,试验组切口采用自制医用弹性柔棉宽胶带将切口两侧对拉处理,未行缝合。比较两组术后视觉模拟评分法(visual analogue scale,VAS)、皮肤切口愈合情况、瘢痕遗留情况。结果术后第1天,两组患者的VAS评分比较,差异无统计学意义(P>0.05);术后第2、3天,试验组VAS评分均低于对照组,差异有统计学意义(P<0.05);两组甲级愈合率、乙级愈合率及丙级愈合率比较,差异无统计学意义(P>0.05);试验组温哥华瘢痕量表(Vancouver scar scale,VSS)评分低于对照组,差异有统计学意义(P<0.05)。结论自制医用胶带对手汗症术后皮肤切口愈合及瘢痕的影响显著,降低疼痛,促进创面愈合,减少瘢痕遗留。