Method for improving wet rubbing fastness of dark cotton or polyester-cotton waterproof oilproof woven fabric

Abstract

The invention discloses a method for improving wet rubbing fastness of dark cotton or polyester-cotton waterproof oilproof woven fabric; equipment used in the method is a jig dyeing machine or an overflow dyeing machine; the specific process conditions include adding chelating dispersant AOP and citric acid at normal temperature, stirring and mixing well, running for 25-35 min, adding a fluorocarbon waterproof oilproof agent, stirring and mixing well, running for 25-35 min, wherein the mass concentration of the chelating dispersant AOP is 5-8 g / L, the mass concentration of the citric acid is 1-2 g / L and the mass concentration of the fluorocarbon waterproof oilproof agent is 10-15 g / L, heating to 70-80 DEG C, running for 30-40 min, discharging, washing with clear water for 10 min, dewatering the discharged fabric, drying and tentering at 120-150 DEG C, pre-shrinking, and inspecting and packaging the finished fabric. The method is convenient to use, has no need for special equipment, may be implemented by a common factory, and is low in cost and ideal in effect, and fabric processed by the method basically meets the requirements of clothing fabric at home and abroad.

Description

technical field [0001] The invention belongs to the technical field of improvement of dark-colored cotton or polyester-cotton waterproof and oil-proof woven fabrics, and in particular relates to a method for improving the wet rubbing fastness of dark-colored cotton or polyester-cotton waterproof and oil-proof woven fabrics. Background technique [0002] Dark-colored cotton or polyester-cotton dyed fabrics, such as bright red, dark blue, black, etc., will have low wet rubbing fastness due to the large amount of dye used, but after color-fixing treatment, they can basically meet the requirements of some industry standards and national standards. And when the fabrics of these colors need to be treated with oil and water repellency, the wet rubbing fastness will be significantly reduced, failing to meet the requirements of industry standards and national standards. Phenomenon. The main reasons are the following two points: (1) The dyed cloth before making oil and water repellen...

AI Technical Summary

Problems solved by technology

In view of the phenomenon that the waterproof and oil-proof effect decreases after washing, a small amount of waterproof and oil-proof agent and citric acid are added to the water bath to form a dynamic balance of the water-repellent agent between the water-bath and the cloth surface, effectively solving the problem of the shedding of the water-repellent agent, and achieving the desired effect after washing. The effect that the water and oil repellency effect does not decrease