KR102106475B1 - Sealant composition for cable sealing - Google Patents

Abstract

The present invention relates to a sealing material composition for cable sealing and, more specifically, to a sealing material composition for cable sealing, which has excellent economics and workability by providing the sealing material composition for cable sealing composed of oxides, chlorides, silica, and gypsum to be easily cured and worked by mixing only a certain proportion of water before work, blocks flames by maintaining a shape even when exposed to high temperature or fire, and also can suppress the leakage of toxic substances due to excellent water tightness and airtightness.

Description

Sealing material composition for cable sealing {SEALANT COMPOSITION FOR CABLE SEALING}

The present invention is not only excellent in economic efficiency and workability by mixing only a certain proportion of water before work, so that it can be easily cured and worked, and also retains its shape even when exposed to high temperatures or fires, so that it is possible to block flames and watertight It relates to a sealing material composition for one-seal cable sealing that is excellent in airtightness and can suppress the discharge of leaks or toxic substances.

In general, offshore plants such as ships are composed of very complicated facilities inside, and since these facilities are all connected by wire cables, hundreds to thousands of through holes are formed so that the wire cables can pass between the blocked walls.

However, such a through hole can be a main propagation path of the flame in the event of a fire, and thus it is possible to prevent this phenomenon. Therefore, a sealing material for sealing an empty space between the partition wall and the cable is required.

Moreover, according to the A-60 regulation of the International Convention for the Safety of Life at Sea (SOLAS), the through hole is sealed with a material that is harmless to the human body so that the fire does not spread to other areas in the event of a fire.

On the other hand, as a polymer material widely used as a sealing material, resins such as silicone-based and fluorine-based rubber are used, and silicone-based resins are widely used in consideration of environmental problems, performance, and price competitiveness. In addition, in order to impart various physical properties to these polymer materials, inorganic components are mixed and used, and the inorganic components are generally composed of a mixture of inorganic compounds such as silicon dioxide, talc, calcium carbonate and hemihydrate gypsum and a liquid acting as a bonding agent.

However, the conventional technology as described above has poor flame barrier properties such as thermal decomposition or carbonization when exposed to high temperatures, and smoke density and toxic substance emissions did not satisfy the standard value. During work, there was a problem in that workability was significantly reduced, such as flowing before hardening.

In order to solve this, Patent Document 1 proposes a sealant composition for one-component pipe sealing made by mixing a silicone resin, a metal hydroxide powder, a hollow ceramic whose surface is modified with silica sol, a peroxide catalyst, and the like.

However, in the case of Patent Document 1, there is a problem that the work efficiency is still inadequate by the method of instantaneous adhesion, and the shape retention force is lowered when exposed to high temperature or fire, and watertightness and airtightness are not satisfied.

Patent Document 1: Republic of Korea Patent Registration No. 10-1336028 "Sealing composition for piping sealing"

The present invention is to solve the problems as described above, by providing a sealing material composition for one-seat cable sealing made of oxide, chloride, silica and gypsum, it is possible to easily harden and work by mixing only a certain proportion of water before work The task is not only to provide excellent economic efficiency and workability, but also to maintain the shape even when exposed to high temperatures or fires, to block flames, and to provide excellent water tightness and airtightness to suppress leakage or leakage of toxic substances. do.

The present invention, in the sealing material composition for cable sealing, characterized in that consisting of 25 to 30% by weight of oxide, 20 to 25% by weight of chloride, 35 to 50% by weight of silica and 5 to 10% by weight of gypsum, sealing material composition for cable sealing Let as a solution to the problem.

In addition, the sealing material composition for cable sealing is used before mixing with water, but it is preferable to mix the sealing material composition for cable sealing and water in a weight ratio of 10: 1 to 10: 2.

On the other hand, the oxide is preferably used alone or in combination with zinc oxide, calcium oxide, aluminum oxide or copper oxide, and the chloride is used alone or in combination with calcium chloride, potassium chloride or sodium chloride, but is not necessarily limited thereto. In addition, various known oxides and chlorides can be applied.

The present invention allows easy curing and work by mixing only a certain proportion of water before work, and not only has excellent economic efficiency and workability, but also maintains its shape even at high temperature or fire exposure to block flames and watertightness. It has the effect of suppressing the leakage or the discharge of toxic substances due to its excellent gas tightness.

The present invention for achieving the above effect relates to a sealing material composition for a cable seal, only parts necessary for understanding the technical configuration of the present invention will be described, and descriptions of other parts will be omitted so as not to distract the subject matter of the present invention. It should be noted that.

Hereinafter, the sealing material composition for cable sealing according to the present invention will be described in detail as follows.

In the present invention, in the sealing material composition for cable silencing, it is composed of 25 to 30% by weight of oxide, 20 to 25% by weight of chloride, 35 to 50% by weight of silica, and 5 to 10% by weight of gypsum.

The oxide is added to improve the physical properties such as durability of the sealing material, as well as to improve flame barrier properties, water tightness and airtightness, and can be used alone or in combination among zinc oxide, calcium oxide, aluminum oxide or copper oxide, but must be used here. It is not limited to, and various known oxides can be applied.

On the other hand, if the amount of the oxide used is less than 25% by weight, there is a fear that the efficiency of improving the properties is insufficient, and if it exceeds 30% by weight, there is a fear that workability is deteriorated.

The chloride is added to improve the flame barrier properties, watertightness, and airtightness of the sealing material while functioning as a binding material for each material, and can be used alone or in combination among calcium chloride, potassium chloride, or sodium chloride, but is not limited thereto, and is already known Various chlorides can be applied.

On the other hand, if the amount of chloride used is less than 20% by weight, the effect may be insufficient, and if it exceeds 25% by weight, there is a fear that workability is deteriorated.

The silica is added to improve the physical properties such as durability of the sealing material, as well as to improve flame barrier properties, water tightness, and airtightness. If the amount of silica used is less than 35% by weight, there is a concern that the efficiency of improving the properties may be insufficient, 50% When it exceeds%, there is a possibility that workability may deteriorate.

The gypsum is added to improve the flame barrier properties, watertightness, and airtightness of the sealing material while functioning as a binder. If the amount of gypsum used is less than 5% by weight, the effect may be insufficient, and 10% by weight If exceeded, there is a possibility that workability may deteriorate.

In addition, the oxide, chloride, silica, and gypsum are preferably added in a powder form, and the powder particle size is preferably 1 nm to 500 μm, but is not limited thereto, and may vary depending on the type of each material or the use environment of the sealing material. Can be applied as

Meanwhile, the sealing material composition for cable sealing is used by mixing with water before the operation, and more specifically, the sealing material composition for cable sealing and water are mixed and used in a weight ratio of 10: 1 to 10:10. Here, when the mixing ratio of the sealing material composition and water is out of the above range, there is a fear that workability is deteriorated.

Hereinafter, the present invention will be described in more detail based on the following examples, but the present invention is not limited by the examples.

1. Preparation of sealing material composition

(Example 1)

It was prepared by mixing 25% by weight of zinc oxide as oxide, 20% by weight of calcium chloride as chloride and 50% by weight of silica and 5% by weight of gypsum.

(Example 2)

It was prepared by mixing 30% by weight of calcium oxide as oxide, 25% by weight of sodium chloride as chloride and 35% by weight of silica and 10% by weight of gypsum.

(Comparative Example 1)

Referring to Patent Document 1, 12% by weight of silicone resin, 50% by weight of aluminum hydroxide, 19.25% by weight of hollow ceramic mixed with hollow ceramic and silica sol in a 1: 1 weight ratio, di (t-butylperoxyisopropyl) benzene 3 Weight%, 5% by weight of a titanate coupling agent as a binder, 1% by weight of a thixotropic agent (Thixotropic agent, manufactured by R-972, Evonik), 3% by weight of a nanoclay as a filler, 1.25% by weight of ethylene vinyl acetate as a compatibilizer, It was prepared by mixing 1.25% by weight of zinc oxide, 1.25% by weight of stearic acid, 0.5% by weight of antioxidant (RUBATAN 184-RD, GENERAL QUIMICA SA), 0.625g as a flame retardant, and 0.625g of antimony trioxide, zinc zinc borate 1.25g.

2. Evaluation of sealing material composition

Flame propagation, smoke density, and toxicity tests were conducted for the compositions according to the examples and comparative examples, and the test standards and results are shown in [Table 1] below. On the other hand, in the case of Examples, water was mixed with the composition in a certain ratio (Example 1 = 10: 1 (water) / Example 2 = 10: 2 (water)).

division Example 1 Example 2 Comparative Example 1 Test standards Reference value Average combustion persistence
(MJ / ㎡) 4.29 4.21 3.14 FTP Code Ⅱ-IMO Resolution A. 653 (16) ≥1.5 Critical copying during digestion
Heat flux (KW / ㎡) 52.4 57.6 40.63 ≥20 Total heat release (MJ) 0.00 0.00 0.00 ≤0.7 Maximum heat release rate
(KW) 0.10 0.09 0.12 ≤4.0 CO 98.2 97.4 105.0 FTPC PART 2 ≤1450 HBr Not detected
Not Not detected
Not Not detected
Not ≤600 HCN Not detected
Not Not detected
Not Not detected
Not ≤140 HCL Not detected
Not Not detected
Not Not detected
Not ≤600 HF Not detected
Not Not detected
Not Not detected
Not ≤600 NOx Not detected
Not Not detected
Not Not detected
Not ≤350 SO ₂ Not detected
Not Not detected
Not Not detected
Not ≤120

As shown in [Table 1], the embodiment according to the present invention is excellent in flame barrier properties and watertightness and airtightness to toxic substances compared to the comparative example, and is particularly easily cured by mixing only a certain proportion of water before work And it can be seen that the economy and workability is excellent as it can work.

As described above, the sealing material composition for cable sealing according to the present invention has been described through the above preferred embodiments, and its superiority has been confirmed, but those skilled in the art from the spirit and scope of the present invention described in the following claims It will be understood that various modifications and changes may be made to the present invention without departing from the scope.

Claims (3)

In the sealing material composition for cable sealing,
It is composed of 25 to 30% by weight of oxide, 20 to 25% by weight of chloride, 35 to 50% by weight of silica and 5 to 10% by weight of gypsum,
The sealing material composition for cable sealing is used by mixing the sealing material composition for cable sealing and water in a weight ratio of 10: 1 to 10: 2 before work.
The oxide is used alone or in combination among zinc oxide, calcium oxide, aluminum oxide or copper oxide,
The chloride is calcium chloride, potassium chloride or sodium chloride, characterized in that used alone or in combination, sealing material composition for cable silly. delete delete