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About Us Location:Home >> Products > Poly ethylene oxide     

Poly ethylene oxide

Poly ethylene oxide

Item : PEO

Details :

 

Retention aid in papermaking (PEO)
        Poly Ethylene Oxide (PEO) is linear and high molechar polymer. It has good water-solubility, lubricity, thermoplastic hot melt and reducing rent performance, its water solution has high viscosity and superior stringiness, it is used widely in papermaking industry as pulp dispersant which use in papermaking. Short fiber paper which containing filling and paints in the process of papermaking can loss partial filling (paints) and short fiber paper with the water. If in the process of papermaking, add a kind or several kinds composition with PEO which can form associating first, then add tiny PEO (0.03-0.05kg PEO/Ton pulp), shall take back filling (paints) above 90%, recovers short fiber above 85%, can reduce the consumption of raw material, increases output. The addition of PEO makes pulp’s fiber into order, sequentially strengthen the paper’s pull, also can improve the travel speed. At the same time it also in favor of water paper’s drainage, reduces resin type of organics’ depositing in paper machine, also can accelerate the recycling of water usage and wastewater carbon emission reduction in papermaking.
        In the papermaking frequently-used PEO’s composition generally select and apply relatively low-cost water-soluble resin, including polyacrylic acid, water soluble phenolic resin lignin acid and so on, its usage is the 1~4 times PEO. Moreover because of its nonionic after used PEO, it shall not effect the addition of other assistants. It’s minimum-investing, maximum-returning, good-quality, well adaptable, irreplaceable and ideal assistants.
Chemical name: Poly Ethylene Oxide
Molecular formula: [CH2-CH2-O] n
Appearance/density: White granule, power above 20mesh
True density: 1.15~ 1.25Kg/L
Melting point: 66-70

The temperature of thermal decomposition: 423-425

Iconicity: Nonionic
Package: Seal single-layer plastic bag for 1kg, pack in corrugated case for 10kg.
The steps of usage
Dissolution:
PEO is high molecular polymer, easily soluble in water. Please dissolve by the following steps:
1.  Inject a one-third of water into dissolving tank, and open the agitator. Just use room temperature water to dissolve.
2. Form water film on sloping plate, and slowly sprinkle powdered PEO on the water film rushing into the tank.
3.  After the feeding has finish, will make the water renew to concerted liquid, stirring gap for 1.5 hours, rest 20 minutes that can be used.
4.  The dissolution time of mature of PEO is two hours.
5.  When use tap water which contain high concentration of CLO, can add properly a few Na2S2O3 (sodium hyposulphite, 1 ton of water add 30g).
Addition:
1.Connect PEO dissolving tank with flow controlled of level tank, floating ball in tank will automatically work to keep flow rate stable.
2.PEO liquid through the filter (8) into dilution tank, at the same time add water to dilute to adjust concentration.
3.Through water spray nozzle (11) (The length is the lateral width of papermaking tank, one side of pipe evenly drill many ostioles), evenly let PEO liquid with the way of level difference flowing by itself add into papermaking tank.
Stirring:
        Due to PEO is high molecular resin, excessive stirring speed will cut off long-chain, cause degradation, so the selection of stirring speed is very important, generally adopt second-floor type(the depth of tank exceeding 2 meter should found in three-layer), propeller type (steam turn by downward direction) stir low speed. The best speed is 1m/sec of the outer of paddle speed. Above 1.5m/sec will affect the quality of PEO, upside paddle along liquid level to lower suspension of PEO and remove the foam.
The selection of application amount:
The concentration of solution: When using PEO preparing concentration all below 0.05wt% (that is 1m3clear-water and 0.5kg liquid of PEO) overrich concentration goes ill with dissolution. But in using apply above 10 times of clear water to dilute, the concentration of PEO on the nets should in 0.001~0.005 wt‰. Adopt directly in 2m3-4m3 of water tank to dissolve 0.5kg of PEO that can shorten the time of dissolution.
Additive amount: The additive amount shall be moderate, too little can not work dispersing effect, because of max viscosity of PEO too much will make dissolution incompletely, so cause the effect of dispersing evenly, bonding towel and so on. Moreover the difference of the kind of raw material, quality, the type of papermaking, papermaking speed, the condition of water quality and type of production, application amount of PEO can has a greater difference. And also should adjust on its condition, for the time being, bumf is suitable for 0.2kg/T~1kg/T in the production (100-250m/mins papermaking speed).
        The following list is the application amount of PEO in papermaking with the main materials of wood pulp (This is for your reference only.):
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