Hygroscopicity of fibers is usually expressed in terms of water content and moisture regain, and the fiber tester tests the moisture regain of lyophobic fibers by an oven method. The fiber to be tested taken by the fiber tester was placed under laboratory conditions for 24 hours, and then accurately weighed 3 parts, each weighing 4~5g, placed in an electric constant temperature drying oven at 105±2°C and baked to a constant weight. (The weight difference between two consecutive times does not exceed 0.05% of the last time), and the test result is 16.2%. Compared with 13.1% of ramie fiber and 8.6% of cotton fiber, lean apocynum fiber has better hygroscopicity.
The intensive apocynum fiber has higher breaking strength and smaller elongation at break, which indicates that the fiber is high-strength and low-extension fiber, and the fiber is brittle. The friction coefficient of a certain amount of quiescent apocynum fiber measured by a fiber tester is approximately 0.3 to 0.45, and the static and dynamic friction coefficients are not significantly different. In the fiber tester test, it was also found that the surface of the sturdy apocynum fiber was relatively smooth, indicating that the cohesion between the sturdy apocynum fibers was not ideal. In particular, the length of the fibers is very different, which brings certain difficulties to the spinning of the fibers.
Therefore, in the development of refined apocynum fiber products, blended products are generally used to develop products by combining the characteristics of other blended fibers. The surface quality specific specific resistance of the dried apocynaceae fiber used for the fiber tester is smaller than that of the cotton fiber. This shows that lean apocynum fibers have higher antistatic capacity than cotton fibers. The good anti-static property makes the sturdy apocynaceae fiber products not easy to adhere to the body while wearing, and it is also not easy to adhere to dust and has good taking performance.
Poly Aluminium Chloride is referred to as PAC. It is also commonly called basic aluminum chloride or coagulant. It is a new type of high-efficiency inorganic polymer flocculant. Its aqueous solution is a hydrolysis product between aluminum trichloride and aluminum hydroxide, with a colloidal charge, so it has a strong adsorption on suspended matter in water. To achieve the purpose of condensing suspended matter in water. The Polyaluminium Chloride produced by Jinhe are white, yellow or light yellow powder.
Polyaluminum Chloride has the functions of removing suspended matter, COD and BOD, degreasing, decoloring, removing heavy metals and residual chlorine in water, etc. It is mainly used for purification treatment of tap water and industrial wastewater. Polyaluminum chloride is currently the most widely used inorganic coagulant in water purification processes. There is no need to adjust the pH value of the source water, it has a wide range of adaptation to the pH value of the source water, which is unmatched by traditional inorganic low molecular coagulants.
Polyaluminium Chloride is used in metallurgical, electric power, tanning, medicine, printing and dyeing, papermaking, chemical and other industries` sewage treatment.It`s also used in tap Water Treatment. Its coagulation effect forms flocs (also known as alum flowers) fast, the particles are large and heavy, and the sedimentation is fast. The applicable PH value ranges from 5 to 9, and has the characteristics of low dosage, low cost, high activity, convenient operation, wide adaptability, and low corrosion.
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