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博文

目前显示的是 五月, 2017的博文

Analysis of Color Fastness Tester

JIS rubbing fastness test machine  is a standard testing machine for the friction test machine  II type (vibration type) specified in Japanese Industrial Standard JIS L 0849. Mainly used for dyeing products, the color fastness to friction test. Scope of application: textile fabrics friction color fastness test machine is based on the Japanese industrial standard [textile color fastness test method] in the "rubbing fastness test method" (JIS L0849) specified in the friction test machine Ⅱ shape (learn vibration) as the standard test machine. Evaluation and determination of rubbing fastness to coloring of fibrous products. The "flocking strength test" of flocking fabric, "friction and decolorization test" of artificial leather, "abrasion resistance and abrasion test" of cardboard, printing ink and paint, etc., through the exchange of various optional accessory parts The Can be applied to a variety of materials, friction testing mach...

Safety Tips Of Commercial Dry Cleaning Machines Use

Commercial dry cleaning machines are more common in everyday life, dry cleaning from Europe, previously also tried different dry cleaning agents, such as gasoline, carbon tetrachloride, trichlorethylene, trichlorotrifluoroethane and so on. The longest used is dry cleaning agent - tetrachlorethylene, which has so far been grown for 70 to 80 years in many developed countries in Europe, Australia and North America.    Tetrachlorethylene Commercial Dry Cleaners still holds more than 80% of the share. Since tetrachlorethylene has a micro-toxicity, long-term exposure to tetrachlorethylene is harmful to health. Although domestic environmental protection does not limit the concentration of tetrachlorethylene, the design and use of dry-cleaning machines should be considered so that the operator Avoid or reduce exposure to tetrachlorethylene. Therefore, many countries in the world have made regulations on the allowable concentrations of tetrachlorethylene gas in the ...

The Preparation and Operation of Glow Wire Testing Machine Test

Glowing wire tester for electrical and electronic products, household appliances and materials for fire hazard test, simulation of hot components or overload resistance of the heat source or ignition source in a short time caused by thermal stress. Preparation before glow wire test machine trial 1, before use must read the instructions, and follow the instructions step together, in turn; 2, do not use non-original accessories, so as to avoid danger; 3, the instrument placed in a room with ventilation equipment (or with a special ventilation hood in a small laboratory), in order to exhaust after the experiment. 4, the two matching weights with copper wire (has been connected to the sample rack) by the left side of the two pulleys (through the corresponding hole) hanging under the bracket plate. 5, according to the standard requirements of the preparation and clamping samples. 6, close to the adjustment of the switch (1) loosen the nut that is fixed to the switch to move left...

Characteristics and Precautions of Din Abrasion Tester

Din abrasion resistance tester for elastic materials, rubber, tires, conveyor belts, soles, soft synthetic leather. The The And other materials of the quality of the wear measurement, with high performance, good reproducibility and easy operation of the characteristics. The  Din abrasion resistance tester  main principle is in a certain load, in a certain level of gauze, the columnar sample on the surface of the gauze across the grinding of a certain trip, by measuring the quality of the sample wear, and then calculated by the density of the sample Volume wear, in order to make the test comparable, and finally the need to use standard rubber, the test results expressed as a calibrated gauze based on the relative volume of wear or foot is expressed as a relative amount of wear Wear base. Din abrasion tester , also known as drum grinding machine, used to determine the rubber tires, rubber shoes, tape wear resistance, to identify the quality of rubber products. Dur...

The Characteristics of Finger Wear Tester

Product features tend to change over time, the visual appearance is often the consumer to judge the quality of life during the product quality is good or bad. Thus, durability and wear resistance during normal use affect the overall impression of product quality. Damaged surfaces are some of the main causes of poor quality. So in the production of wear testing required, and then an effective evaluation of the product can effectively meet the requirements of consumers, to consumers the feeling of high-quality products. Finger wear test At present, many instruments exist, such as the electronic button wear test, the current use of more RCA tape wear instrument, the same universal finger wear tester can also be used to measure the electronic button wear test. Below to interpret the universal finger wear tester : Universal finger wear tester: The finger on the surface slides to produce the highest biomechanical feedback when the object interacts with the object. When touching th...

Study on the Permeability Test of Fabric

Silica sol is a high quality binder commonly used in precision casting industry. The silica sol shell has high temperature strength and good surface quality. However, the silica sol shell has a low residual strength, which is less difficult to clean, and the shell is long. However, the strength and permeability of the cast silica sol are related to each other. The use of an increased shell thickness is often used to ensure the strength of the shell, resulting in difficulty in heat dissipation, large grain size, and poor air permeability through the permeability tester . , Must improve the pouring temperature of molten metal, making the shell and metal reaction to the extent of increased, greatly affecting the product surface quality, while the high temperature of the metal solution makes shell deformation serious, thus affecting the quality of casting. So far, domestic and foreign scholars to study the use of fiber as a reinforcement to join the metal matrix com...

Principle Analysis and Solution of Pilling

Fabric in the processing and taking the process, when subjected to external friction, such as friction is greater than the fiber strength or friction between the fibers or cohesion, the fiber ends will be pulled out to form a ring and fluff, the fabric surface to produce fluff So that the fabric lost luster. When the villi exposed to a certain length, the villi in a certain distance due to rubbing friction, repeated elongation and retraction and entangled into a ball, seriously affecting the appearance of the fabric surface. When the fabric surface of the pompon formation, due to the different fiber breaking strength, yarn twist, fabric structure and so on, some pompon after the formation of easy to fall off, and some easy to fall off, entanglement, and easy to filth , Affecting the quality of clothing taking. Cashmere fiber fine fineness, low strength, poor spinnability; Soybean protein fiber monofilament fine fineness, light weight, high strength, and acid and alkali resi...

The Mechanism and Improve Methods of Fabric Pilling

Fabric pilling refers to the fabric surface by a few or several fibers to form fluff, and then entangled in a spherical state. When filaments are produced on the surface of the filament fabric, one or several hooked monofilaments are entangled with each other. These hair ball not only affect the appearance, but also become the reason for the decline in style and other reasons. For the phenomenon of pilling, the loose fabric of the most easy to produce. The study observed, in the course of taking the fabric of the fiber by the external friction, the first pull out the formation of rings and hairs. The condition of the fluff is pulled out of the force is greater than the friction of the fiber in the yarn. So the short fiber fabric with a strong twist yarn or a larger coefficient of friction of the fibers of the greater resistance to raising the hair, it is not easy to fluff. After the hair reaches a certain length, in order to each other gentry into the ball, therefore, the le...

Learn about color assessment cabinet light source knowledge

As we all know, observe the color can not be separated from the observation light box light source, no light no color. The knowledge of physics tells us that visible light is also an electromagnetic wave whose wavelength range is: 3900nm-7600nm (as shown below). Near the wavelength of 3900nm light is purple. Near the 7600nm wavelength of light is red. Less than 3900nm light called UV, the human eye. Generally see no more than 7600nm wavelength of light called infrared, the human eye is generally invisible. In the visible light between 3900nm and 7600nm, we introduce a physical concept that represents the luminous color of light - the color temperature. The color temperature of the light source is the color that appears when the light source emits light and the color that appears when an absolute blackbody is burned at high temperatures Consistent with the combustion temperature to define, its unit is the absolute temperature Kelvin "K". K value is higher, the colo...

Flammability Test Principle Decryption

In general, the combustion is divided into flame burning and flameless combustion, the former is the formation of fiber pyrolysis of the gas or volatile liquid combustion, the latter is the residue (carbon) oxidation. Of course, the combustion of the fiber is related to the product of its thermal cracking, and the thermal cracking process of the different fibers is different. The following are the same as the " Flame retardant test instrument mechanism (1) cover theory: flame retardant at> 500 ℃ in the fiber surface can form a protective layer of the cover, in addition to hinder the supply of O2, but also to prevent the proliferation of combustible gas, so as to achieve flame retardant purposes, such as borax - boric acid The (2) gas theory: First, the flame retardant at the combustion temperature, decomposition of non-combustible gas, the flammable gas concentration can be produced to produce the flame concentration below; the other is the flame retardant in the...

China and US Testing Standard of Sun color fastness

China sun color fastness tester test standards: Light fastness: daylight, is not subject to the provisions of the rain under the conditions of sun exposure, and then refer to the blue wool standard to assess light fastness. Resistance to artificial light color fastness: xenon arc, is equivalent to the sun in the artificial light source under the conditions prescribed exposure, and then refer to the blue wool standard to assess light fastness. Resistant color fastness: outdoor exposure, is without any protection under the conditions of open exposure, and then control the blue wool standards for comparison, to assess the color fastness. Resistance to artificial climate color fastness: xenon arc, is required under the conditions, in the xenon lamp tester spray exposure, and then compared with the blue wool standards to assess the color fastness. Light and sweat color fastness, the sweat after treatment of the sample in the exposure of the instrument, and then assess its ...