Correct use of six-sided protective agent for stone

Most of the stone decoration projects have not been completed and accepted, and various stone lesions have occurred, and remedial measures have to be sought. In fact, these troubles can be completely avoided. No matter where the pollution and damage of the stone come from, the fundamental reason is that the cracks and pores of the natural stone itself have adsorption and permeability. If the protective treatment is not carried out, it will inevitably lead to processing and storage. Various diseases and pollutions occur during transportation, installation and use, and accelerate the corrosion and weathering process. The best way to solve the problem is to pre-protect the stone and eradicate the adsorption and permeability of the natural stone. Because of the protective treatment of the stone, its water absorption and adsorption are greatly reduced, as long as water and pollutants do not penetrate into the stone, the lesion will not be produced. In addition, for the stone that has been damaged, it must be treated after the rinsing treatment such as cleaning and coloring. Otherwise, the lesion may appear again after a while.

1. Basic conditions that stone curing agents should meet

1) Protective: It should be able to alleviate or block the erosion, damage and fouling of the surrounding environment.

2) Compatibility: The protective agent itself and its action process can not have a negative effect on the stone, such as yellowing and chromatic aberration of the stone.

3) Weather resistance: the treated stone should have the longest protection life.

4) Recoating: After the protective treated stone has reached the protection period and fails, it can be re-protected by re-protection.

2, the type of protective agent

There are many types of stone protective agents, and there are many different classification methods.

1) According to the use, it can be divided into:

Surface protectant: used for surface protection of stone (for the construction of dry hanging stone can be used for six-sided protection), waterproof, anti-fouling, anti-rust, anti-weathering and color retention. Such as: stone waterborne protective agent F-219W, stone surface protective agent F-103B, stone oil protective agent F-101R, stone oil protective agent F-101Y, stone multifunctional protective agent F-135WD, stone wet color protective agent F- 102G.

Bottom protection agent: used for the bottom protection of wet-laid construction stone to prevent the occurrence of stone diseases such as white, yellow, rust and water spots. Such as: stone underside protective agent F-103D.

2) According to the mechanism of action, it can be divided into:

Penetration type: completely penetrates into the interior of the stone, leaving no trace on the surface, and does not affect the appearance of the stone. Such as: stone waterborne protective agent F-219W, stone surface protective agent F-103B, stone multi-functional protective agent F-135WD, stone oil protective agent F-101R, stone oil protective agent F-101Y.

Surface film type: It cannot penetrate completely into the interior of the stone, forming a protective film on the surface of the stone. Such as: stone wet color protective agent F-102G, stone bottom protective agent F-103D.

3) According to the solvent state, it can be divided into:

Water-based: water is used as a dispersion medium and does not contain organic solvents. Such as: stone waterborne protective agent F-219W, stone multi-functional protective agent F-135WD.

Oily: It is an organic solvent as a dispersion medium, or it does not contain an organic solvent, but it is soluble in an organic solvent. Such as: stone oil protective agent F-101R, stone oil protective agent F-101Y, stone wet color protective agent F-102G.

Emulsion type: It is emulsified, with water as the dispersion medium and no organic solvent. Such as: stone surface protection agent F-103B, stone bottom protection agent F-103D.

4) According to the function can be divided into:

Breathable type: It has the same breathing function as human skin. The pollutants in the external environment cannot penetrate into the interior of the stone, but the moisture inside the stone can be volatilized. Such as: stone waterborne protective agent F-219W, stone multi-functional protective agent F-135WD, stone surface protective agent F-103B, stone oil protective agent F-101R, stone oil protective agent F-101Y.

Sealed type: closed function, respiratory function is not obvious. Such as: stone wet color protective agent F-102G, stone bottom protective agent F-103D.

5) According to the protective effect can be divided into:

Waterproof type: It can prevent water and water-based pollutants from infiltrating into stone, but water can be spread on the surface of stone, without forming obvious water drops, and can be used in cement mortar. The bonding fastness between cement mortar and stone is basically not Have an impact. Such as: stone waterborne protective agent F-219W

Water-repellent type: Water forms obvious water droplets on the stone surface, which can prevent water and water-based pollutants from penetrating into the stone. Such as: stone multi-functional protective agent F-135WD, stone surface protective agent F-103B, stone oil protective agent F-101R, stone oil protective agent F-101Y.

Oil-proof type: It can prevent water and oily pollutants from penetrating into the interior of the stone. Such as: stone multi-functional protective agent F-135WD.

It should be noted that the oil-proof stone protective agent can also be waterproof at the same time, and the waterproof type (including hydrophobic type) stone protective agent does not necessarily achieve a satisfactory oil-proof effect.

6) According to the decorative effect can be divided into:

Brightening type: It can deepen the color of stone and make the stone more vivid. Such as: stone wet color protective agent F-102G, stone oil protective agent F-101Y.

Gloss type: can increase the luminosity of stone. Such as: stone wet color protective agent F-102G, stone oil protective agent F-101Y.

Primary color type: does not change the appearance of the stone, and maintains the original color of the stone. Such as: stone waterborne protective agent F-219W, stone multi-functional protective agent F-135WD, stone surface protective agent F-103B, stone oil protective agent F-101R.

3, the correct choice of protective agent

When using stone protectant, in addition to the need for better protection, it should also consider the type of stone, the surface condition of the stone, the decorative effect required by the stone and the climate environment. Different protective agents may have different protective effects on stone, and should be treated differently when selected. In addition, the most important point is that no matter what kind of protective agent is used, before the large-area construction, a partial small test should be made first, even if it is a familiar protective agent, so that the protective effect is approved by Party A, and also Do your own mind and prevent accidents from happening due to lack of consideration. The specific selection methods can be summarized as follows:

1) Glossy stone (especially smooth marble) should use a protective agent that increases the gloss of the stone. Such as: stone oil protective agent F-101Y.

2) Decorative effect requires the use of brightening type protective agent in the occasion of deepening the color of the stone. Such as: stone oil protective agent F-101Y, stone wet color protective agent F-102G, or first coloring treatment and then protection.

3) In order to maintain the original appearance of the stone, the primary color type protective agent should be used. Such as: stone waterborne protective agent F-219W, stone multi-functional protective agent F-135WD, stone surface protective agent F-103B, stone oil protective agent F-101R.

4) When using wet attaching, the bottom of the stone should be selected with a protective agent that does not affect the bonding strength between the stone and the cement mortar (ie, no hydrophobic type protective agent is available). Such as: stone bottom protective agent F-103D, stone waterborne protective agent F-219W (F-219W is not as good as F-103D for stone bottom protection, should be cautious when selecting).

5) Consider environmental protection requirements (especially when working in confined spaces), water-based protective agents should be used as much as possible. Such as: stone waterborne protective agent F-219W, stone multi-functional protective agent F-135WD, stone bottom protective agent F-103D, stone surface protective agent F-103B.

6) The surface of the stone (the stone surface not in contact with the cement mortar) or the stone used for dry hanging construction can be used as a waterproof type protective agent or a hydrophobic type protective agent. Such as: stone waterborne protective agent F-219W, stone surface protective agent F-103B, stone multi-functional protective agent F-135WD, stone oil protective agent F-101R, stone oil protective agent F-101Y.

7) Where oil is often exposed, oil-repellent protective agents should be used. Such as: stone multi-functional protective agent F-135WD, stone wet color protective agent F-102G.

8) When the ambient temperature is too low, the water-based protective agent may not be able to be constructed due to icing. In this case, an oil-based protective agent should be used. Such as: stone oil protective agent F-101R, stone oil protective agent F-101Y.

Here, it is necessary to remind people that people often have a misunderstanding. They think that as long as they are treated on the surface of the stone, everything will be fine. In fact, the surface protection of the stone can only solve the erosion and pollution of the stone surface by the external environment. However, it is impossible to completely solve the damage of cement mortar to wet stone, and it is impossible to completely avoid the occurrence of white porcelain and water spots of stone. Similarly, if only the bottom surface of stone is protected without surface protection, the surface pollution and rust of stone The generation of such diseases will also be difficult to avoid, so the best way is to protect the stone with six sides.

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