Stable marble glue

Abstract

The invention discloses stable marble glue. A composition of attapulgite, montmorillonoid and sepiolite is adopted as an anti-sinking agent, a piperidine nitroxide free radical polymerization inhibitor and phenol and quinine polymerization inhibitors are reasonably compounded as a polymerization inhibitor, styrene, divinyl benzene, alpha-methyl styrene and isobornyl acrylate are compounded as an active diluent, and the stability of marble blue is improved from three aspects of sedimentation prevention, polymerization inhibition and 'icicle' prevention. Compared with marble glue of the prior art, the stable marble blue disclosed by the invention has an equivalent gel time, mechanical properties, such as the tension shearing strength, the compression shearing strength, the impact toughness and the bending elastic modulus are all greatly improved, and in addition, the time that a polymer is formed at a marble glue tank opening, the preservation life of the glue at 80 DEG C and the time ofcolloid standing and phase splitting at 30 DEG C are greatly delayed when being compared with those in the prior art.

Description

technical field [0001] The invention belongs to the field of stone adhesives, and more specifically relates to a stable marble adhesive. Background technique [0002] Due to its fast curing speed, high hardness, good polishing performance and other good construction performance, marble glue has been widely used in the rapid positioning, mosaic, repair and bonding of various stone materials. [0003] However, there are still many defects in the storage stability of marble glue on the market. The base resin of marble glue is pre-accelerated unsaturated polyester resin (pre-accelerated unsaturated polyester resin is composed of reactive diluent, polymerization inhibitor, accelerator and unsaturated polyester resin, wherein the reactive diluent is generally styrene) . After long-term storage of marble glue, especially after high temperature, the styrene inside the colloid volatilizes and self-polymerizes at the mouth of the tank, forming a stalactite-like or icicle-like polyme...

AI Technical Summary

Problems solved by technology

After long-term storage of marble glue, especially after high temperature, the styrene inside the colloid volatilizes and self-polymerizes at the mouth of the tank, forming a stalactite-like or icicle-like polymerization product (commonly known as "ice ice"), which makes it difficult to open the lid and cannot In addition, after the marble glue is placed for a long time, the resin inside the colloid is easy to precipitate on the surface, and the filler will settle, causing the phase separation of the colloid, causing the surface of the marble glue to be thinner and the bottom to be dry and hard; After a long time of storage, the storage period has not expired and the inside of the colloid gels, making it unusable

[0004] Patent CN201210264392.3 "A Stable Type Marble Adhesive" discloses a kind of stable type marble adhesive, only by adding a storage stabilizer (talc powder), the resin exudation and filler existing in the existing marble adhesive The defect of precipitation has been improved to a certain extent, that is, at 30°C, there will be no separation of resin and filler for 2 months; but at 30°C or higher temperature, the separation of resin and filler will still occur after a longer period of time

[0005] In order to solve the problems of marble cementation "icing", internal gel and pollution, it is usually chosen to replace some or all of styrene with other reactive diluents, resulting in an increase in cost, but the effect is not ideal: ①The cost of marble glue increases, resulting in sales ②Mechanical properties have declined, especially the shear strength of stone materials has decreased significantly; ③The quality of marble glue is uneven, some have high activity and fast curing, but the storage period is shortened; some have low activity and the storage period is quite , but the curing time is longer and the construction efficiency is low

There is also an inert diluent to partially replace the active crosslinking agent styrene in the marble glue to inhibit the volatilization of styrene, but because the inert diluent does not participate in the crosslinking and curing reaction, it affects the bonding performance, and the inertness that does not participate in the reaction The diluent will migrate over time, causing stone and environmental pollution. This will alleviate the problem of marble glue "ice" and internal gel to a certain extent, and at the same time increase the problem of mechanical property attenuation and stone and environmental pollution.

Images