JPS60156780A - Anchor bolt-setting agent - Google Patents

Abstract

PURPOSE:To obtain the titled high-performance agent usable even in the presence of moisture, by incorporating both isocyanate and organic peroxide capsules in the chief agent capsule containing both unsaturated polyester and nonamine- based polyol. CONSTITUTION:The objective agent can be obtained by incorporating (A) chief agent capsule containing mainly of unsaturated polyester and non-amine-based polyol (e.g. sucrose) with (B) isocyanate capsule containing polyisocyanate (e.g. diphenyl-methane diisocyanate) or isocyanate prepolymer and aromatic tertiary amine (e.g. dimethyl p-toluidine) and (C) organic peroxide capsule containing organic peroxide (e.g. benzoyl peroxide). EFFECT:Giving high-level setting strength, also having good storage stability.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fixing agent used for inserting an anchor point and fixing an anchor bolt to concrete or rock.

Fixing agent for anchor bolts currently on the market.

Generally, it consists of an easily breakable base capsule such as a glass tube that encloses a base resin mainly composed of unsaturated polyester resin, and a curing agent capsule that is encapsulated within the base capsule and encapsulates an organic peroxide.

This fixing agent is inserted into the hole where the anchor port is to be fixed prior to the anchor port, and then the anchor port is inserted into the hole, the capsule is destroyed by the anchor port, and the fixing agent is mixed to cause a curing reaction. , fix it to the hole wall.

This unsaturated polyester tVk main ingredient is a fixing agent.

It shrinks during curing, making it impossible to obtain a large adhesion force, and in upward A holes such as ceilings, this is partly related to the viscosity of the adhesion agent, but in places where there is moisture, the gelation time is particularly long, so it flows out and prevents the adhesion work. (There are eight difficult problems.

In order to solve this problem, the inventor of the present invention has proposed a fixing agent for anchor bolts with the following characteristics as a result of extensive studies, and has already filed a patent application.

In other words, this fixing agent compensates for shrinkage during curing of polyester by adding urethane resin to polyester resin that foams by reaction with moisture in a damp place, increases body S, and hardens in a short time. However, even if the anchor bolt falls into a hole in the direction of the hole, it will be possible to fix it to the anchor bolt fixing before it spills out. Since the reaction of the saturated polyester and the reaction of the urethane resin take 4τI at the same time, especially at a place where Ik is Iri, the reaction of the urethane resin, that is, the foaming, becomes high foaming, resulting in a practical problem of low strength of the cured product. There is a problem with the city dog.

It is the object of the present invention to provide a fixing agent for anchor bolts which eliminates all of these drawbacks and has excellent storage stability.

Invention 1d In order to achieve this objective, we have developed a main-cut capsule containing a base material mainly composed of unsaturated polyester and a non-amine polyol, and a polyisocyanate or isocyanate prepolymer encapsulated in the base capsule. This is a 3-armpit type anchor bolt fixing alloy comprising an isocyanate capsule encapsulating a tertiary amine and a troubled peroxide capsule encapsulating a dinitrate (all nitric oxides) in a base capsule. be.

The present invention has 1 strength, 1. 1. 1. Epoxy resin, acrylic material, and polyester resin, which is cheaper than 1.1 material. The addition of a urethane resin that increases hardness and cures in a short time is a major factor in the formation of an isocyanate-encapsulated aromatic tertiary amine, which acts as a 11-stylized polyester ((< Ml, - The reaction of the unsaturated polyester occurs first, and then the reaction of the urethane antigrease occurs during the reaction of the unsaturated polyester.

When polyester hardens (to compensate for the shrinkage, the
It is possible to suppress the foaming of urethane resin to a low and constant foam even when applied to a damp place, and in practical use it is a cured product with a strength of 1/4 and 2/2. It's a thing.

The invention is based on the fact that the polyol (isocyanate curing agent) that is encapsulated together with the unsaturated polyester in the base capsule is a non-amine thread, and that the amine that is encapsulated with the isocyanate capsule is an aromatic tertiary amine. (It was decided that polyester would be self-produced (A A), and 1 in 17H.
Libo este! 1: Improved the storage stability of German cyanate and improved the overall storage stability of the anchor bolt adhesive.
1 Non-abrasive 11 polyester +1/t41 used in the present invention
One finger is. alpha, beta, alpha, beta, alcoholic acids such as maleic anhydride, trichloric acid, etc., and some of them depending on your needs.
j (r< of hydrophthalic acid, isophthalic acid, terephthalic acid, etc.
, substituted with a dibasic acid, ethylene glycol.

Propylene glyco-l and diethylene glyco-l.

The unsaturated polyester obtained by condensing dipropylene glycosylation, hydrogenated hisphthalate, etc. with a glycol compound such as styrene in a molar ratio of 1:1.

Crosslinking purposes such as vinyl arenine, chlorstyrene, Sibi-7 lebenzene, diallyl phthalate, acrylic esters, methacrylic esters, etc.) Dissolved in saturated monomers and inhibiting polymerization of hydroquinone, etc. IJ:. A'll was added.

The non-amine polyols used in the present invention include sucrose, sorbitol, glycerol 117, pentaerythol,
etc.

The mixing ratio of unsaturated polyester and non-amine polyol to be encapsulated in the base capsule is 20-30/unsaturated polyester/non-amine polyol.
70. Preferably it is 70/30 to 40/60 (weight ratio).

The polyisocyanate used in the present invention is a common polyurethane/
All of the materials used in Kun's llJl production 1, such as various isomers of toluene diisocyanate and their mixtures, purified products and crude products of diphenylmethane diisocyanate, etc., are reused parts, but there are some issues such as odor, workability, and Nakakaoki 1ψ. Therefore, purified or crude nodiphenylmethane isocyanate is suitable.

The ζ,r-socyanate prepolymer is an alkylene oxide (e.g., ethylene oxide, propylene oxide, tetrahydrofuran, etc.) or low-molecular-weight polyol. ethylene glycol, diethylene glycol,
Glopyrene glycol, cyfropylene glycol, glycerin, trimethylolpropane, 1.2.6-hexane trio-? death.

Pentaerythritol 7, sorbitol, sorbitan,
Molecular weight approximately 5 obtained by adding to sucrose, etc.)
00 to about 4000 polyoxyalkylene ethers synthesized from the above-mentioned polyisocyanates are used.

The aromatic tertiary amine used in the present invention includes dimethylvalatoluidine (1) MPT), dimethylaniline, diethylaniline, and the like.

As the organic peroxide, benzoyl peroxide, cyclohexanone peroxide, and tertiary butyfurane hydroperoxide are used.

Encapsulation of each of the aromatic tertiary amine and n-peroxide into 4 capsules is as follows: 100 parts by weight of the total weight of the unsaturated polyester and non-amine polyol.
0.5 to 5 parts of K-tertiary amif.

One to five organic peroxides are used.

In addition to the above, the main ingredients include organic tin compounds such as dibutyltin laurate, anti-shrinkage agents such as polyethylene and polystyrene, tartar, clay, and silicone.
), IL7 mina, barium sulfate, asbestos fiber,
Aggregates such as crow powder and glass fiber, desiccants such as cobalt naphthenate, and others can be blended.

The foaming rate of urethane is preferably 1 to 10%.

Next, examples will be shown. A hole with an inner diameter of 19 mm and a depth of 130 #1 m was drilled in the concrete. As the main ingredient capsule, a polyethylene stopper was used in a test tube with an inner diameter of 1'6 mm and a length of 11 Q mm, and an isocyanate cuff of 7 liters was added.
Organic peroxide capsules are made by melt-sealing the end of a glass tube that is shorter and thinner than the test tube used for the main ingredient capsule (the diameter of the tube should be one that will fill up depending on the acid used). was used to encapsulate the main ingredient into capsules. The formulation examples and test results are shown in the table below.

As shown in the following table, the fixing agent according to the present invention has a short gelation time, a large fixing force (pulling force), and
Excellent storage stability.

1 □ Note 1) Phthalic acid polyester (contains 30% vinyl heptamer for crosslinking) Note 2) Sucrose Note 3) Amine (
Polyol with added ethylenediamine, etc. Note 4) Dimethyl butt resin? EtE5) Dibutyltin laurate Note 6) Benzoyl peroxide Note 7) Aromatic polyisocyanate (diphenylmethane diisocyanate) Note 8) Gelation time when the main ingredient is aged in a 80°C fi4 bath.

Note 9) Measured 3 hours after the start of the reaction.

Hole (＜19φ x depth 130#1lff), bolt (diameter 1
6φ x length including sin 130#1m), capsule material (glass)
, capsule size (16φxt omen) patent applicant 622-

Claims (1)

[Scope of Claims] A main ingredient capsule encapsulating a main ingredient whose main ingredients are unsaturated polyester and non-amine polyol. An isocyanate capsule in which a polyisocyanate or an isocyanate prepolymer and an aromatic tertiary amine are encapsulated in the base capsule. A fixing agent for anchor bolts, comprising an organic peroxide capsule encapsulating an organic peroxide in a base capsule.