Special ion exchanging resin for dyeing thin Denier polypropylene fibers and its preparation
A technology of ion exchange and fine denier polypropylene, which is applied in the direction of conjugated synthetic polymer artificial filament, etc., which can solve the difficulty of controlling the compatibility and dispersion stability of multi-components and polypropylene matrix, unfavorable adjustment of spinning process, dyeing Problems such as complex process, to achieve the effect of improving dyeability, improving physical and mechanical properties, and expanding application fields
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0030] 1 g of benzoyl peroxide (BPO) was dissolved in a mixed monomer of 80 g of styrene (St) and 20 g of divinylbenzene (DVB) (purity 50%). Add 500ml of deionized water containing 5g of gelatin under stirring, and disperse;
[0031] From 70°C to 95°C at a rate of 0.1°C / min, stirring for 9 hours to obtain a white spherical copolymer, which was filtered, washed with water, and dried at 110°C.
[0032] 100g of dried spherical copolymer was swelled in 500ml of dichloroethane for 1 hour. Add 500g mass concentration of 98% H 2 SO 4 , Heating at 95 ° C, sulfonation 10h. After the reaction was completed, the solvent was evaporated, and the excess sulfuric acid was washed away with water. The obtained yellow spherical copolymer was placed in 500ml of NaOH aqueous solution with a mass concentration of 5%, and reacted at 20°C for 1 hour to obtain Na-type resin;
[0033] 4 parts of the above-prepared Na-type exchange resin and 96 parts of fine-denier polypropylene fiber fiber-forming...
Embodiment 2
[0037] 100g of the white spherical copolymer prepared by the same method as in Example 1 was dissolved in 1,2-dichloroethane solvent of about 5 times its mass, and the solution was heated to 50°C and then added with 25ml of acetylsulfonate solution. Stir for 60 min, and terminate the reaction with ethanol. The product was distilled to remove the solvent, precipitated, filtered, and then treated with NaOH by the method of Example 1 to form Na-type resin.
[0038] With 8 parts (mass) of Na-type exchange resin obtained above, 92 parts (mass) of fiber-forming resin of fine denier polypropylene fiber, through static mixer, twin-screw blending, blending temperature is 200 ℃, and screw speed is 150rpm , extruded and pelletized to obtain ion-exchange dyeable fine-denier polypropylene fiber special resin.
[0039]Using the method disclosed in "The Development and Performance Research of PP / PS Blended Fine Denier Fiber" by Lu Yan et al., through spinning, drawing and post-processing, t...
Embodiment 3
[0042] 50g adopts the white spherical copolymer prepared by the same method of embodiment 1 to be dissolved in 125ml containing sulfuric acid and P 2 o 5 In the cyclohexane solution, said sulfuric acid is the concentrated sulfuric acid of mass concentration 98%, in the cyclohexane solution H 2 SO 4 The mass concentration is 49%, P 2 o 5 The mass concentration is 40%, 40 ℃ stirring reaction 30min (at this moment can see cyclohexane from H 2 SO 4 and polystyrene sulfonic acid (PSSA)), the above reactants were allowed to stand for 1 h, and the temperature was kept constant. H in the ice bath 2 SO 4 Produce a precipitate, separate it from cyclohexane polystyrene sulfonic acid with a separatory funnel, and remove the H 2 SO 4 Add water to the residue, separate cyclohexane, and then use dialysis to remove residual H from the remaining polystyrene sulfonic acid 2 SO 4 , finally adopt the method NaOH of embodiment 1 to be processed into Na type resin.
[0043] 6 parts of t...
PUM
| Property | Measurement | Unit |
|---|---|---|
| concentration | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More