Research On Technology, Characteristics And Development Trend Of Modern Textile Detection

The carrier of textile testing technology is textiles.

Modern textile testing technology

The development of information technology has greatly promoted the progress of textile detection technology.

The application of computer technology, automation technology and communication technology in textile detection has greatly improved the means and capabilities of modern textile detection.

At present, the function of textile detection equipment is becoming more and more perfect, and the intelligence and automation of the instrument are more and more high. With advanced equipment, people have been able to turn the test of traditional raw material properties into the quality of finished products by testing and predicting the properties of fibers and yarns.

Throughout the development of modern textile detection technology, it presents the following main characteristics.

1. maximizing the automation level of testing.

With the ISO1973 1995 - "weighing and vibration method for measuring the density of textile fibers", the vibration method was used instead of the single fiber length weighing method of the 1976 version towel. Various kinds of vibration fineness instruments have been developed abroad.

The vibration fineness tester does not require manual adjustment, and does not need to observe the maximum vibration value of fiber with no visual acuity. With a single key operation, it can provide automatic testing of fiber linear density.

The two operators operate a large capacity testing system for cotton fiber and complete the test of 180 samples, only 1H.

The test results of the system are not affected by the operators. The results come from a large number of samples, and are more representative. The test results have good accuracy and reproducibility.

2. widely used high and new technology.

(1) the wide application of computer technology: a newly developed computer controlled instrument for measuring the density of raw cotton and wool by the fast gas flow method in the world. It only needs 3 to 5g fiber samples, eliminating the waste of time due to the control of the sample to the weight and the error of the sample itself.

In the single fiber strength and elongation test, the new instruments use computers to collect, process and display data. For example, the setting of gauge and elongation at break can be adjusted in advance through computer software.

At present, the computer network and near infrared spectrophotometric method are being used to identify fibers abroad.

The spectrum produced by the near-infrared spectrophotometer is further analyzed through the computer backbone network to produce the ASC II file of the absorption spectrum.

The method is fast and reliable. The central network can not only distinguish fibers with similar chemical components, but also identify fibers.

(2) the application of digital image processing technology: optical fiber diameter analyzer (OFDA) uses digital image processing technology to measure the average diameter and diameter distribution of wool fibers, and can test 10 thousand fibers per minute.

The greatest value of OFDA lies not only in testing the diameter and diameter distribution of fibers, but also in measuring the crimp of medullary hair, dead hair and fibers.

(3) the application of laser technology: Australia's laser scanner (Sirolan), like OFDA, is used for the rapid measurement of the diameter of wool fibers. The difference is that it uses laser scanning and computer control technology to make use of the linear correlation between the diameter of fiber diameter and the attenuation of light energy attenuation detected on silicon photocell. It completes the whole test process in a few minutes, and prints out the mean value, CV value, effective root number and its distribution map of fiber diameter.

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3. the sensing mode and the gripper are constantly improved.

The textile testing instrument is developed from capacitive sensing to audio frequency sensing and photoelectric sensing.

The G581 homogeneity tester of Zweigle, Germany, has two independent testing devices. Each test device contains an audio chamber with an air vibration frequency of 3 to 5Hz. The density and evenness of the sliver and roving can be continuously measured by using the correlation between the change of the fiber assembly speed and the uniformity of the fiber bundle, and the test results are not affected by the surrounding environment.

The G580 yarn structure tester of the tweg company uses the Barco sensor to measure the structural data of the yarn, not the weight change, and scan 2mm every time.

The infrared test results are not affected by the mixing of test materials and ambient air, which improves the accuracy of the test.

4. fiber and yarn testing instruments are developing towards portable and low cost.

Large scale instrument manufacturers abroad are working hard to pform their working environment, and strive to develop portable low-cost instruments to meet the needs of the market.

The RMl070Compunaire is a portable instrument which does not need to install another airflow device and is easy to carry.

Development direction and Prospect of modern textile detection technology

1. develop towards product simulation and quality prediction and evaluation.

The important trend of the development of foreign textile testing instruments is to quickly and reliably predict the processing and quality of products using test results.

According to the test results of the G$80 type yarn structure tester, a computer simulation of woven or knitted fabrics has been carried out before the fabric has been started to weave, and the quality of the fabric has been evaluated in advance to avoid the waste of time and cost caused by poor quality.

The Sirolan yarn detector set of Commonwealth of Australia Institute of science and Technology (CSIRO) can predict yarn quality from the properties of cotton sliver, and narrow the gap between fiber and fabric quality prediction and quality control.

2., develop rapidly and efficiently.

The high performance tensile tester Tensonjet of Weige woster has a test speed of up to 400m/min, which can complete 30000 tensile tests per hour. The SirolanTensor developed by CSIRO has a multifunctional chuck, which has a multifunctional chuck. It can finish carding, pre tension and tensile test at one time. The computer controlled yarn friction and hairiness tester made by SDL can test at 50 to 300m/min at any speed. The G580 yarn structure tester of the weiger company can provide a very wide range of yarn irregularity information, including grading matrix, in addition to the test results without mixing of test materials and atmospheric environment. The matrix can be used to judge whether the appearance of a certain yarn is qualified or not, so as to improve the timeliness of quality control. Tsell

3., from single function to multi-functional development.

The inspection of cotton fibers was introduced only in 1950s, and the functions of traditional equipment were single, time-consuming and labor-intensive.

Linear density, length, strength, elongation at break and color grading test; Tensojet is superior to other similar tensile testing instruments, not only in its high speed and large capacity, but also in displaying five kinds of percentile values, and some percentile values are closely related to the downtime caused by looms due to some reasons, which is of great significance for users to purchase and use different yarns. The G580 Cyros yarn quality control system of the weisg company can not only reliably evaluate the yarn structure and performance of the yarn to be tested, but also provide many potential quality analysis. With the help of optical uniformity tester and 3D fabric image, the G580 Cyros system can replace the fabric small sample to reproduce the fabric condition. HVl is used for the comprehensive determination of cotton fiber quality and performance, and only one sample can be finished by 10min.

4., develop from test room to network.

Some large instrument manufacturers, such as tweg and tweg Ulster, have developed data analysis system based on computer network technology.

Using this system, the test instrument can be networked with the central computer. The central computer can get data from all the networked instruments and process them. Finally, the results will be gathered on a laboratory report sheet.

The windows Texdata of the company is such a system.