1.1 Quality indicators Xibu Guan white powder Active ingredient (%) 90*pH value 6±1 Viscosity (P) 12 (10%, 85*C) Viscosity Thermal stability (%) 1001.2 Main characteristics 1799PVA pulp for various fibers It has good adhesion performance, stable slurry viscosity, and is not easy to deteriorate. The film strength, wear resistance and buckling strength are higher than other pulps, and it has good sizing performance. It has been widely used in polyester-cotton fabrics and pure for a long time. Cotton fine-density high-density fabric warp sizing. However, the 1799PVA pulp is also difficult to achieve high-concentration and low-viscosity process because of its high viscosity. It is also difficult to achieve high-concentration and low-viscosity process for the pulp slurry T/C yarn, and its printing and dyeing slurry is also unfavorable to the environment, which limits the export of the fabric to the European Community. The T/C28X28405X228160 and T/C30X42 236119.5 yarn cards produced by our company are the key products for the two foreign exchange earning. They are used as garment fabrics and have high requirements on the quality of sizing. The factory has tried a slurry formulation containing 66% PVA and 34% esterified starch. However, it is found in the production that the coverage coefficient of the warp yarn in the pulp pot is relatively high (75%), and the high temperature sizing is used to make the PVA easy to set. The skin, resulting in high pulp plaques (the highest rate of pulp plaque up to 41%) warp yarns are difficult to split, good axial rate is not high, seriously affecting the further improvement of the gray cloth pass rate.
On the 160 yarn card, a small amount of pulp was prepared by replacing the 50% PVA in the original formula with DY-65 polyester rubber powder produced by Jiangxi Dongyong Industrial Co., Ltd., and good results were obtained, and then further extended to medium and large quantities. The use has been successful.
DY-65 slurry has good solubility, uniform and stable slurry, good compatibility with other slurries, no delamination; good fluidity of the slurry, low temperature will not become gelatinous, no pulping, no pulp spots, The fiber has high adhesion and good film formation. The sizing yarn is smooth and soft, and it is easy to desizing, easy to retreat, and has no pollution to the environment. Therefore, DY-65 pulp can be called a biochemical slurry that is both economical and environmentally friendly and can partially replace PVA.
2 Application 2.1 Slurry Formulation Slurry Name Original Formula (kg) Present Formula (kg) Soft-slurry film strength drop Splitting easy to film complete E-regeneration Mao House.Allrightsreserv in the washing bucket, clear the water depth 28*1cm, slowly put polyester powder and PVA, stir and soak 2Qnin, boil after boiling, simmer for 9Cmin, set 40*1cm viscosity 21*1s to be used; put in another washing bucket Clear water depth of 16 ± 1cm, slowly put into DM891 stirring soaking, warming and boiling; the cooked polyester powder and PVA slurry will be transferred into DM891 slurry, mixed evenly, then simmer for 20min, set the amount of 67 ± 1cm, viscosity 12 *2s is ready to use.
2.2 sizing quality and weaving effect quality index original formula current formula pulp pot viscosity () viscosity fluctuations very poor () pulp pot temperature (*C) slurry solid content (%) sizing rate (%) sizing pass rate (%) resurgence Rate (%) Resilience pass rate (%) Axle weight pass rate (%) Strength rate (%) Deflection rate (%) Sizing drop rate (%) Rough feel is rougher and smoother The opening clarity is clearer and clearer Slurry crust phenomenon has a small amount of pulp skin, good axial rate (%) through break (root / stage. h) pulp spot rate (%) cloth machine efficiency (%) first-class product pass rate (%) from large area use According to the test, after the polyester rubber powder is used, the amount of PVA decreases, the viscosity of the slurry decreases and the solid content increases, the slurry penetrates well, the strength of the sizing yarn increases, and the sizing feel is softer, and the sizing is less sticky. The axial rate is increased, and the opening length of the cloth machine is 2cm longer than the original. Through continuous monitoring and management, the viscosity fluctuation of the pulp pot is very poor, only 0.5s, the viscosity is very stable, the sizing quality, the cloth machine efficiency is stable, the first grade of cotton cloth is steadily increasing, and the effect is remarkable. .
3 slurry cost analysis index original formula current formula sizing rate (%) 100 meters warp dry weight (kg) 100 meters with pulp dry weight (*) 100 meters sizing cost (yuan) 63 yuan, according to the current company number of 120 units The monthly output of 240km can save 0.87 million yuan, saving the company a slurry cost of 104,000 yuan per year. If we add the production scale of 144 sets of machines that will be fully promoted on the T/C30X42 2361195 yarn card, the annual cost of slurry can be reduced by nearly 200,000 yuan.
4 Conclusion is good, the remaining pulp, the machine is placed for 4 hours without stratification of the slurry, the viscosity of the slurry is stable.
The solid content of the mixed pulp is increased and the viscosity is lowered, which is very beneficial to the realization of the principle of sizing, such as 'soaking, strongening and reducing stretching. The sizing effect is good, the twisting is easy, the good axial rate is high; the opening of the cloth machine is clear, the cutting is less, the cloth machine The efficiency is stable. At the same time, the sizing yarn is improved due to the solid content, the extrusion weighting rate is lowered, the drying efficiency of the drying room is improved, the energy consumption is decreased, and the sizing output is increased.
After using the polyester glue slurry, the dyeing factory can reflect the ease of desizing of the grey cloth, avoiding the high total tightness of the thick khaki fabric, the lack of control of the PVA, and the rejection of the fabric. Dyeing claim.
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