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  • What is the heat discoloration resistance and heat yellowing resistance test?

    2021-05-04

    ⑴Test method: After softening and finishing the fabric (colored fabric for heat-resistant discoloration; bleached fabric for heat-resistant yellowing), bake (or press) at (185±2) ℃ for 3 minutes, and then press Judge the law.▼The heat-resistant discoloration resistance is evaluated by comparing the Read More
  • How to use high temperature levelling agent correctly?

    2021-04-29

    Properly master chemical operation. The cohesion and association of disperse dyes are directly related to factors such as temperature, concentration, time, and additives. Therefore, the following points should be paid attention to when chemical materials: Commonly used diffusing agents and solid additives have greater viscosity at high concentrations. If mixed with dyes, it will increase the cohesiveness of the dyes and cause difficulty in toning, and even leave color groups and color blocks, so Dyestuffs and auxiliaries should be separated into materials. Read More
  • What are main factors affecting the thermal migration of disperse dyes?(1)

    2021-04-28

    There is a certain contrast between the dyeing depth of polyester fiber and the thermal migration of disperse dyes, that is, the deeper the color, the greater the thermal migration of the dye during high-temperature dry heat treatment, and the more serious the impact on the dye quality Read More
  • What are the usual bleaching methods in dyeing factories?

    2021-04-27

    After scouring, most of the natural and man-made impurities on the fabric have been removed, and the capillary effect is significantly improved, which can meet the processing requirements of some varieties. But for bleached fabrics and bright-colored light-colored floral fabrics and colored fabrics, Read More
  • How to select levelling Agent for dispersion dye?

    2021-04-26

    The retarding property of levelling agent can inhibit the transient dyeing property at the beginning of dyeing, which is the primary factor in choosing levelling agent. The test method of dyeing retarding is generally as follows:1. Experimental materials:Sample: Deoiled refined polyester fabricFormu Read More
  • Development status of silicone sealant industry

    2021-04-23

    Silicone glue is organic silicon products, because of its strong adhesion, tensile strength, but also has weather resistance, vibration resistance, moistureproof, odor resistance, adapt to the characteristics of hot and cold change, coupled with its wider applicability, can achieve most of the build Read More
  • What are the functions and requirements of softeners?

    2021-04-22

    Requirements of softener 1. Under various soft processing conditions, the working fluid should be very stable. 2. Does not reduce the whiteness and color fastness of fibers or fabrics. 3. The softened fiber or fabric is not easy to be discolored by heat, and there should be no changes in color, feel, or odor during storage. 4. If the softener is emulsion, its emulsion stability is better. 5. According to different processing requirements, it can have proper water absorption or water repellency, anti-static properties and other properties (should be selected according to the different requirements of the fabric). It is resistant to washing or dry cleaning. 6. There is no adverse effect after human skin contact. Read More
  • What are the reasons for the reduction of the tensile strength of cotton and linen in the tensile strength dyeing and finishing process?

    2021-04-21

    Chemical damage, such as chlorine bleaching, oxygen bleaching, peeling, flame retardant finishing (fiber carbonization), acid action, enzyme action, etc. Read More
  • Thermal conductive silicone

    2021-04-21

    Thermal conductive silica gel sheet is a kind of thermal conductive medium material synthesized by special process with silica gel as the base material and metal oxides and other auxiliary materials. Read More
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