JPS5869272A - Adhesive for ceramic tile - Google Patents

Abstract

PURPOSE:To provide the titled adhesive which exhibits excellent adhesion to a dry setting bed and little suffers from peeling of tiles due to the cracking of mortar or concrete bed, by adding portland cement to a filler-contg. synthetic resin emulsion. CONSTITUTION:150-500pts.wt. filler such as calcium carbonate and, if necessary, a tackifier such as PVA are blended with 100pts.wt. (on a solid basis) resin emulsion such as a styrene/butadiene copolymer emulsion to form an emulsion compsn. 5-50pts.wt. portland cement is blended with 100pts.wt. said compsn. in situ to obtain the titled adhesive. This adhesive is used for bonding ceramic tile to dry or wet setting bed to conduct interior or exterior surfacing. EFFECT:This adhesive is also excellent in durability and weather resistance.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides mortar and concrete structures tortoise 1&! An adhesive for ceramic tiles that has excellent flexibility, is compatible with wet and dry base materials, interiors and exteriors, and has excellent wearability, durability, and weather resistance.

Conventional adhesives for ceramic tiles have been used by mixing cement, aggregate, synthetic resin emulsion, water retaining agent, water, etc. at a construction site for mortar and concrete bases. However, OII has poor adhesion to dry base materials, and furthermore, the mortar and concrete that are the base materials shrink and expand. An accident occurred where the attached tiles peeled off.

In addition, individual adhesives such as polyester, acrylic, and 81R are used for dry base materials, but acrylic/thread, 8!
II-based adhesives have poor water resistance and cannot be used for adhesion to areas where 0@2 water resistance is required, such as the exterior or 6th room. The epoxy system has drawbacks such as the fact that the layer agent Fia is liquid, and the viscosity changes greatly depending on the temperature, making it difficult to apply and unable to follow the movement of the base material even after curing.The present invention has the above drawbacks. This is an adhesive for ceramic tiles that is easy to apply and can bond strongly, and is characterized by the addition of Portland cement to a specific synthetic resin emulsion.

The synthetic g-fat emulsions used in the present invention are copolymer emulsions such as acryl-styrene, IkHI vinyl-acrylic, ethylene-vinyl acid, and styrene-butadiene, which have excellent water resistance and alkali resistance. It is preferable. The filler is calcium carbonate as body gL-family,
Using at least 111111 or more such as silica sand and pottery stone,
The particle size is αx−′Lsz.

It is preferable that the above-mentioned aggregate has a content of 70 or more among all aggregates.
, 'y' is less than 1, if Portland cement F is mixed and ceramic tiles are bonded, the adhesive layer will shrink due to drying and cracks will occur, resulting in a decrease in adhesive strength. Other clay, talc, as needed! Squid, ke-
School fillers such as extender pigments such as soil and coloring pigments such as titanium oxide may also be blended.

In the present invention, it is necessary to contain 150 to 600 parts of filler per 100 parts of emulsion carbon resin in solid weight parts,
If it is less than 150 parts, sufficient water resistance will not be obtained unless the amount of Portland cement added is large, and if the amount of Portland cement increases, cracks will occur due to aggregation of the adhesive layer after drying, resulting in a decrease in adhesive strength. . a
If the OO section is exceeded, mortar and concrete) @ If cracks occur in the relics, the slowing pot effect JIIA will be lost and the ceramic ivy tiles will crack or peel, causing shallow water and peeling accidents.

Furthermore, when a tackifier is added, it has the effect of preventing slippage of pasting of the 7-rank tiles and increasing water retention. The tackifier is preferably a mixture of cellulose ester compounds, polyvinyl alcohol, polyacrylates, and polyethylene dialkyl ethers, and when the viscosity is adjusted to 50001 is/20°C or higher, it is possible to form ceramic tiles. Misalignment can be prevented.

As other additives, S additions other than known antifoaming agents, preservatives, antifungal agents, pigment dispersants, plasticizers, and tackifiers are also possible.

When Portland cement is added to the synthetic resin emulsion adhesive formulated in this manner at the construction site, it is necessary to add ice in an amount of 5 to 50 parts per 100 parts of solid content of the SRM emulsion skin contact agent.

If the amount of Portland cement is less than 6 parts, the water-resistant adhesive strength is low and the resin deteriorates greatly over time, making it impossible to obtain sufficient durability. If it exceeds 50 parts, the open time during construction will be shortened, and the slowing effect will be reduced when cracks occur in mortar and concrete structures.

As described above, the ceramic tile adhesive of the present invention has the effect of buffering against cracks in mortar and concrete structures, and therefore has excellent adhesive properties, durability, and weather resistance. t
It has excellent adhesion to dry base materials, so one adhesive is compatible with all types of base materials, and has excellent adhesion and
Provides durability, weather resistance, and durability.

Next, the present invention will be explained with reference to examples, but the present invention is not limited thereto. In addition, parts indicate parts by weight.

Examples 1 and 2 Acrylic resin with a solid content of 50% as a synthetic resin emulsion
Styrene co-coated iris construction T Lugin loO part K, silica sand No. 6 (average particle size 05%) lffi as aggregate.

5 parts of mineral sulfide (solvent) as additives, 0 part of antifoaming agent, 01 part of preservative, 4.10 parts of 60% 0% methyl cellulose, 5 parts of polyoxylated ethylene dialkyl ether
Solids content: 66% Viscosity: 6000voices/20°C
1 & resin emulsion adhesive, and 20 parts of Portland cement and ink part were added to prepare the adhesive of Example 1.

Furthermore, Portland cement (Portland cement) 509 was added to the dressing of Example 1o.
1 10 part of water was added to prepare the adhesive of Example 2.

Comparative Example 1 The adhesive of Comparative Example 1 was the same as the synthetic resin emulsion carbon adhesive in Example 1 without adding Portland cement and water.

Comparative Example 2 An adhesive of Comparative Example 8 was prepared by adding 100 parts of Portland cement and 1 part of water to the synthetic resin emuldiginone layer agent of Example 10.

Comparative example 3

Claims (1)

[Scope of Claims] 5 to 50 parts of Portland cement is added to 100 parts of Lliil type part weight part weight and 100 parts of a synthetic resin emulsion composition containing 150 to 500 parts of filler. Adhesive for ceramic tiles. 2. The adhesive for ceramic tiles according to claim 1, wherein a viscosity imparting agent is added to the synthetic resin emulsion.