|
appearance
|
white or creamy-white powder
|
|
moisture content at 105℃
|
≤3.5%
|
|
granularity(＞200mesh)
|
≥97%
|
| gravity（g/cm3） |
1.7
|
|
bulk density（g/cm3）
|
≤0.3
|
|
xrd d001（nm）
|
3.5
|
it is used for thermal plastic polymer such as pp、pe modifying.
generally we use a two-step double screw melting extrusion. in the first step we use maleic anhydride or polyolefin grafted from pp、pe、eva to make masterbatch with 40-50% of montmorillonite; in the second step we use pp, pe or eva to dilute the above masterbatch to about 5-8% of montmorillonite, and use double screw melting to get out to make out the needed materials. double screw melting machine should have a bigger ratio of length / diameter as far as possible and high shear screw structure. the melting temperature should not be too high, to keep the polymer in the extrusion process achieve higher shear strength in order to make layers of montmorillonite exfoliated.
brown paper packages plus internal polyethylene film bags, or paper packages with valve mouths are used. the weight of each package is generally 25±0.25kg according to customer demands. keep it in dry places with the temperature of 0~30℃. the quality is valid for 24 months.
