Analysis of the problem of rising ribs in water-based wood paint

First, what is the rise of wood
is a common water-based wood paint, solvent-based coatings basically will not appear this problem. The main reason for the rise of wood ribs is the expansion of water absorption after the wood meets the water, resulting in wood ribs or wood thorns jumping up, affecting the flat surface and overall effect. Wood will rise in water, the use of water-based paint, the problem is difficult to avoid, but we can through the formulation and process adjustment, reduce the extent of the rise of wood ribs and the impact on the follow-up process .
second, the performance of the
of the rise of the wood ribs can probably be divided into two categories: the rise of the cork ribs, the wooden jump of the wooden thorns.
Because the cork is easier to absorb moisture, and the rise of the ribs when the performance of the drum deformation, the case of the rise of the ribs is serious, the later is not easy to repair, so in the first paint should try to choose the light primer of the riser ribs.
the texture of hardwood is more detailed and hard, generally will not produce the phenomenon of ribs, more performance as jumping wood thorns. The conventional practice is to spray a glue-solid primer first, grind off the jumping wooden thorns and then carry out the next process.
Thy, the solution of the wood ribs
for the cork anti-rise ribs, can be sprayed glue solid primer, can also be directly sprayed primer, in the raw material selection has the following points:
1
, the choice of fast-drying resin.
2
, the choice of resin should not be too soft.
3
, the choice of resin or thickener water preservation is good.
water
as little as possible during 4 months of construction, formulation or construction.
5
, should not be too thick spray.
6
, each process should be polished flat.
for hardwood anti-rise ribs, the choice of solid primer also has the following points:
1
, the resin itself is not easy to rise ribs.
2
, choose fast-drying resin.
3
, the choice of resin should not be too soft.
4
, wetting penetration is better, easier to enter the wood catheter.
5
, if it is an alcohol-soluble resin, to make an alcohol system of solid primer can be more effective to prevent ribs.
, other
coating process, paint and construction will have a more obvious impact on the final effect, the selection of the appropriate coating process and coating matching is particularly important.
, in the closed process, after spraying primers, in the grinding process, should avoid large areas of leakage, otherwise easy two-way paint is still rising, not easy to fill.
in the open process, the solid primer after drying to polish flat, to ensure the effect of the follow-up process.