CMC Paper Making Grade
PRODUCT NAME: CMC Paper Making Grade
SYNONYMS:CMC
FORMULA:C6H7(OH)2OCH2COONa
CHEMICAL FAMILY:CMC Paper Making Grade
CMC Paper Making Grade displays many excellent performance in paper-making
technology. it is higher valued by the majority of paper engineers and is
widely used in the production of paper and paperboard, such as paper and
paperboard coating process, coating rheology modifier, water - retention agent,
film-forming agent, auxiliary adhesives, wet end retention enhancers and
surface sizing agents, grinding aids, filler modifier and the flocculating
agent which used in waste water treatment etc. We have different paper making
grades of CMC to meet the different customers’ requirements.
Our CMC paper grade has excellent adhesion,
thickening, emulsification, suspension, flocculation, film, colloids
protection, retain moisture, chemical stability and excellent performance of
pulp fiber affinity. A carboxymethyl group of the hydrophilicity introduced in
its molecular structure makes the cellulose swelling greatly improve, so that
it is easy to be affinity with pulp fibers and filler particles, and enhance
the paper’s toughness and strength; It also can promote pulp and filler with
negative electron and repel each other, make the fiber and filler are well
distributed in the pulp to improve paper uniformity; it can be applied in the
surface sizing agent to improve the paper strength and smoothness; disperse the
pigment, and improve the printing effect; it can increase water retention
effect by controlling and regulating the paint rheology; it shows more
excellent whitening effect and paper hue improvement effect than starch and
polyethylene glycol as a fluorescent whitening agent carrier. It is a versatile
paper additives.
1.
Application in coated preparation
CMC can be added in paint. Due to the calcium
carbonate and kaoline absorb CMC, the adhesion of the paint colloid will be
changed and it will influence the flocculation degree and rheology of pigment /
adhesive particles, and then it makes the paint containing CMC increase its
water retention and control the paint rheology. CMC which is applied in paint
will shows the effect as follows:
*Control and adjust the rheological property of
paint and the dispersibility of the pigment, and increase the solid content of
paint.
*Strengthen the paint water retention , improve
the paint rheology and enhance the coating quality .
*Excellent adhesion, can be used as an auxiliary
adhesive, and reduce the total amount of adhesive.
* Good lubrication, protect blade from being
less worn and torn, and improve the coating efficiency.
* "pseudoplastic" property,
particularly for high solid content paint and high-speed coating.
* Good film, making the coating more smooth and
glossy and preventing "orange peel".
*Improve the retention rate of the brightener in
paint, increase the whiteness of the paper and improve paper hue.
2. Used
as a wet-end additive
After CMC is into wet-end pulp suspension, it
takes chemical hydration effect with oxhydryl in fiber through ethyloic, and
strengthen the bonding force between fibers, meanwhile, enhance the Its effect
will be directly reflected on the increase of the paper physical strength
index. CMC which is applied in wet-end will shows the effect as follows:
* Enhance cohesion between the fibers, and
improve the paper strength.
* The pulp sizing function, and the paper with a
certain degree of sizing.
*Excellent dispersibility helps the shaping of
paper and improves the paper evenness.
* Internal sizing protector, and promote sizing
agents to be distributed evenly on fiber surface;
* Delay AKD hydrolysis rate and reduce the
possibility of hydrolysis garbage pollution system;
* Excellent fine fiber and filler affinity, and
improve the one way retention of paper machine and aids retention rate.
*Enhance the filler and the fiber fines
retention and reduce the white water concentration.
3.
Application in defibrination optimization
CMC is added in the process of vegetable fiber
being refined, it can enhance the lubrication property between fibers, protect
the fiber from over cutting during beating process, boost fiber swell up, make
the outer layer of secondary wall open easier, good fibrillation, easy beating,
reduce the refining energy and save the cost. CMC which is applied in
defibrination optimization will show the effect as follows:
*Swell up the fiber, promote the fibrillation,
and enhance the beating degree;
*Form the internal fibrillation, and increase
the water retention value of the size;
*enhance the lubrication property, protect the
fiber from over cutting and increase the fiber length;
*Make the exposure of oxhydryl and ethyloic, and
enhance the electric charges on fiber surface;
*By the same requirement of beating degree,
refining energy will be greatly reduced.
4.
Application in surface sizing
CMC is used as surface sizing agent. It is with
excellent film form and entire film transferability and it also can form a good
closure and oil-resistance on paper and paperboard surface. Furthermore, CMC is
a dispersant which makes the entire sizing material or coating material enter
into the stable and uniform system, and so that it will show the good sizing
effect. CMC which is applied in surface sizing will shows the effect as
follows:
* Good rheology, film from and the entire film
transferability;
* Increase the napping speed of paper, and
overcome the paper surface fluffing and picking
* Improve the surface strength, aeration and
curling control.
* Improve the paper surface feeling and the
printability.
*It can form a good closure and oil-resistant on
paper or cardboard surface.
5.
Others
*The filler modification applied in organic clad
material will strengthen the bonding force between filler and fiber, and
improve the retention rate and the paper optical property.
*The flocculating agent applied in making-paper
and waste water treatment will reduce the mud, promote the flocculating
settling, and high removal rate of turbidity and COD.
*Strengthening agent and surface sizing agent
applied in special paper will guarantee the paper’s physical index and reduce
the production cost.
*The strengthening agent applied in toilet paper
and paper towel will improve the evenness of paper with the high beating
degree.
*The improving agent applied in evenness of
filter rod paper will enhance the tensile strength and paper cutting jointless
rate.
*Improve the bulkiness and relative absorptivity
of substrate of low quantitative tobacco slice and enhance the strength.
PACKING: 25KG NET IN PAPER BAG
STORAGE AND TRANSPORT:IN DRY AND COOL NORMAL TEMPERATURE
SHELF LIFE: 2 YEARS