远红外中空三维卷曲再生涤纶短纤维生产控制要点

介绍了利用再生材料生产远红外三维卷曲中空涤纶短纤维的生产控制要点。通过原料的把关,前后纺工艺的调整,生产出了质优价廉的远红外再生三维卷曲中空涤纶短纤维。     

远红外中空涤纶纱线的浆纱工艺研究

介绍了远红外中空涤纶的特性,制定了2种远红外中空涤纶纱线上浆配方。对浆液性能及浆膜性能进行了测试分析,并对9.7 tex远红外中空涤纶纱线进行了上浆试验,结果表明:上浆后,纱线的各项性能都有所提高。     

国内外消息

国内外消息“远红外涤纶纤维”课题通过鉴定一项通过研究纤维表面附着物，使人体温度升高而达到保暖目的的研制项目——“远红外涤纶纤维研究”课题，经仪化公司产品技术开发中心研制成功，１２月２日通过鉴定。传统保暧都是通过提高织物的保温性能而达到人体温度不易散失...     

粉煤灰的引入及表面处理对陶瓷远红外性能的影响

对工业废渣粉煤灰在远红外功能陶瓷的应用进行了相关实验和讨论分析.通过引入粉煤灰的单因素实验和表面处理实验后发现:粉煤灰能够作为一种陶瓷原料引入红外功能陶瓷的坯体配方中,其加入能大大降低坯体的烧结温度,但随着量的加大坯体的远红外辐射性能会有所下降;材料的烧结程度和表面采取不同的处理方式(抛光与否)皆会影响其红外发射率值.     

竹炭改性涤纶短纤维的结构与性能

探讨了竹炭改性涤纶短纤维,并对竹炭改性涤纶短纤维的远红外发射率及负离子发生量等进行了测试.结果表明:竹炭改性涤纶短纤维中的竹炭粉体具有多孔结构,且在纤维中能均匀分散,竹炭改性涤纶的负离子发生量达5 200个/m3,高于普通涤纶,负离子释放稳定;功能纤维远红外发射率高达0.88,其白度为57.29%,线密度和断裂强度超过...     

功能性纤维

１、远红外涤纶短纤维在涤纶纺丝过程中添加红发射剂可制得永久性远红外涤纶。远红外纤维的特殊功能与红外剂添加量成正比。这种纤维的温升效果可达２—５℃,对金黄葡萄球菌、白色念株菌的抑菌率大于９９％,远红外发射波长为４—１４微米。该纤维通过吸收外界的热量并向体内辐射远红外线而达到体感升温效果,能促进血液循环,增大血流量,同时具有抑菌、防臭功效,兼具保温、保健多种功能。目前开发的产品有被子、垫被、毛巾与内衣等。２、防紫外线涤纶短纤维防紫外线涤纶短纤维是一种保健功能纤维,其最大特点是能够遮挡紫外线,保护人体…     

远红外抗菌纤维及其复合功能性产品的开发进展

阐述了常见纺织品抗菌整理剂的种类与选择,列举出制备远红外抗菌纤维的表面涂层法、共混纺丝法、熔融纺丝法等常见方法,并叙述了其远红外辐射性能以及抗菌性能的测试方法与标准。通过介绍远红外抗菌纤维在复合功能纺织品上的应用进展,为该类纤维的开发与实际应用提供了一定的研发思路与实例。     

远红外涤纶与其开发前景

远红外涤纶是通过在涤纶加工过程中添加红外吸收剂而制得的。本文详细介绍了该纤维的加工方法，独特的吸热保温性能和保健性能的评价方式，并通过对该纤维国内外发展状况及用途的报道对其开发前景作出预测。     

聚酯树脂及其涂料

具有高反射系数的涂料组合物；耐侯性、耐化学品性和膜硬度好的钢涂料用聚酯树脂；具有深冲压性的远红外外辐射涂料组合物及其涂覆的钢板；具有优异远红外辐射性和低光泽的预涂金属板及涂覆该涂料的钢板；聚酯多元醇组合物及含该组合物的涂料     

竹炭改性涤纶机织物远红外性能的测试与分析

为了研究竹炭改性涤纶织物的远红外性能及相关影响因素,将7种不同规格的竹炭纤维机织物进行了远红外发射率的测试与分析,并采用正交方法探究了影响竹炭织物远红外功能的因素。结果表明:随着织物中竹炭纤维含量的增加,织物的远红外发射率增大;竹炭纤维织物中经、纬纱的竹炭纤维含量对其远红外发射率的影响是非常显著的,纱线的线密度对织物的远红外发射率影响也是显著的,而织物组织对织物的远红外发射率几乎没有影响。     

纤维和遮光剂对纳米孔粉体隔热材料性能的影响

新型高温隔热材料对工业窑炉高效节能作用显著,降低其高温辐射导热率有利于提高高温隔热性能。采用干压成型制备了添加不同种类和不同含量的纤维及遮光剂的纳米孔粉体隔热材料,分别测试了试样的常温耐压强度和不同温度下的导热系数,探讨了纤维和遮光剂对纳米孔粉体隔热材料的力学性能和隔热性能的影响,并利用SEM、EDS和FTIR对试样的微观结构和红外透射率进行了分析表征。结果表明,多晶莫来石纤维有效增强了纳米孔粉体隔热材料的耐压强度,掺杂9%(质量分数)多晶莫来石纤维试样在800 ℃的导热系数为0.047 W/(m·K),低于添加石英纤维的隔热材料;纳米SiC粉体和锆英石粉体作为遮光剂能够有效抑制辐射传热,降低高温辐射热导率,添加10%(质量分数)纳米SiC粉体遮光剂的隔热材料试样导热系数随温度的变化较小,在800 ℃仅为0.041 W/(m·K)。     

Premixed gas combustion stabilized in fiber felt and its application to a novel radiant burner

Premixed gas combustion stabilized in a unique ceramic fiber felt has been investigated. Our aim was to better understand the flame structure and flame stabilization mechanisms in the porous felt medium in order to develop a new radiant burner. A novel recuperative radiant burner was designed and constructed. A flame stabilizes near the downstream interface of the porous medium that is an excellent selective thermal emitter. The burner was developed for use as a gas-fired light source. The combustion performance of the burner at various operating conditions and the effect of heat recuperation are presented. Combustion modes on the fiber felt were examined carefully. An optimal flame structure for the premixed gas combustion is attained and the flame stabilizes in the porous fiber felt at radiant mode combustion over a wide range of firing rates. The burner emits desired spectral radiation and generates fairly intense light at the conditions of heat recuperation. The light radiant burner could be used as an alternative low-glare light source in an integrated heat and light system in which the light is distributed through light pipes.     

Calculation of the response of a gasifying energetic material exposed to monochromatic radiation

It is shown that the steady-state gasification of a homogeneous energetic material with exothermic subsurface reactions has stability boundaries for small and large values of the radiant flux. Examples of corresponding calculation using a transient combustion model are given. A possible method of accounting for the subsurface reactions on the transparency of an energetic material is considered (with examples of numerical calculation). The gasification rate response function of an inert material to small variations in the radiant flux is found analytically. Knowledge of this function allows one to obtain information on some thermal and optical characteristics of an energetic material using relatively simple experiments.     

辐射型外墙隔热涂料的研制

采用单掺、复掺试验方法,优化辐射型功能填料的掺量,获得辐射型外墙隔热涂料的最佳配方。绝对温升、半球发射率等性能测试表明,辐射型外墙隔热涂料对建筑物吸收的热量具有一定的发射功能,可加快室内降温速率,从而达到良好的隔热降温效果,是一种主动降温型隔热涂料。     

An experimental facility for determination of steady flame spread rate of materials employing the Quasi-stationary flame front technique

An experimental facility based on the Quasi-stationary Flame Front Technique for determination of steady flame spread rate of materials at discrete levels of external radiant heat flux was developed. The method employs an external radiant heat source in front of which an element of a specimen of the material is positioned at a location corresponding to the desired level of external radiant heat flux. A specimen movement assembly, which can be operated manually, was designed for moving the specimen towards the stationary external radiant heat source such that the flame front could be maintained quasi-stationary. The experimental technique employed is simple in operation yet is capable of yielding reliable flame fornt displacement–time data. In the paper the design considerations of the experimental facility, details of its components, calibration and typical experimental results obtained are presented.     

Determination of Optical Constants for a Scattering and Absorbing Ceramic

The two-flux model for radiant energy transfer in transparent dielectric materials such as ceramics is extended to include the effect of internal volume emission. A series of experiments on a single specimen by which material optical constants for dielectrics can be determined is proposed.     

Predicting radiant energy transmission through polymer sheets

The flux models can be used to accurately predict the transmission or absorption of radiant energy through an absorbing scattering plastic. The apparent absorbing and scattering coefficients are dependent upon the physical characteristics of the body and the incident radiation as well as the actual absorption and scattering coefficients of the material. The apparent interfacial reflectivity can be estimated from the degree of scattering within the material.     

芳纶短纤维增强硅橡胶阻尼材料的制备及性能研究

以芳纶纤维和苯基硅橡胶为原料,制得芳纶短纤维增强硅橡胶阻尼材料,研究了纤维长度、纤维用量及纤维处理方式对阻尼材料力学性能与阻尼特性的影响。结果表明,硫酸酸蚀处理可增大纤维表面粗糙度,而硅烷偶联剂则附着于纤维表面,实验所涉纤维处理方式中,γ-(甲基丙烯酰氧)丙基三甲氧基硅烷与纤维的结合最好,以其制得的阻尼材料的拉断伸长率最高,达到524%。阻尼材料的弹性模量随纤维长度的增加变化不明显,但随纤维用量的增加而略有增加。纤维长度对阻尼材料的储能模量与损耗因子的影响较小;而随着纤维用量的增加,材料的储能模量与损耗因子增加,使得材料的阻尼性能得到改善。相比于基体硅橡胶,制备的短纤维增强阻尼材料的损耗因子提高明显。     

硅酸铝纤维和玻璃纤维复合二氧化硅气凝胶材料的制备与性能

分别以硅酸铝纤维和玻璃纤维为骨架材料,采用溶胶-凝胶、常压干燥制得纤维复合二氧化硅气凝胶材料,并对材料进行了结构和性能的测试分析。结果表明,二氧化硅气凝胶附着于纤维表面,提高了材料力学强度。硅酸铝纤维复合二氧化硅气凝胶材料的隔音性能优于玻璃纤维复合二氧化硅气凝胶材料。两种纤维复合二氧化硅气凝胶材料耐高温、燃烧性能均达到A级。硅酸铝纤维复合二氧化硅气凝胶材料和玻璃纤维复合二氧化硅气凝胶材料的产烟毒性分别为AQ₁级和AQ₂级,导热系数分别为0.034 W/（m·K）和0.033 W/（m·K）。     

国内耐高温滤材用合成纤维的应用研究进展

综述了国内聚苯硫醚纤维、芳砜纶、芳纶1313、聚四氟乙烯纤维、聚酰亚胺纤维、聚对苯撑苯并二噁唑纤维的耐高温、阻燃、耐化学腐蚀等性能特点,以及在耐高温过滤材料领域的应用研究进展;展望了耐高温滤材未来发展方向是新型复合滤材的开发和生产工艺的优化.