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LPT-923 cable repair agent
LPT-923 cable repair agent is a polymer rubber system, two-component reactive material, is the ideal material for mine cable cold patching. The adhesive has the characteristics of fast curing at room temperature, low curing stress, good sealing performance, impact resistance, good water resistance, and convenient construction. The repaired seal or air leakage is not affected by water, oil, salt and other pollutants. It is mainly used for repairing and sealing various polarity cables below 10000V (such as polyvinyl chloride chlorosulfonated polyethylene neoprene, etc.), which are damaged locally or as a whole due to dragging, smashing, squeezing, impact or blasting collapse during downhole operation.
- Commodity name： LPT-923 cable repair agent
- Commodity ID： 1185227206477631488
Product Description
LPT-923 cable repair agent is a polymer rubber system, two-component reactive material, is the ideal material for mine cable cold patching. The adhesive has the characteristics of fast curing at room temperature, low curing stress, good sealing performance, impact resistance, good water resistance, and convenient construction. The repaired seal or air leakage is not affected by water, oil, salt and other pollutants. It is mainly used for repairing and sealing various polarity cables below 10000V (such as polyvinyl chloride chlorosulfonated polyethylene neoprene, etc.), which are damaged locally or as a whole due to dragging, smashing, squeezing, impact or blasting collapse during downhole operation.
Product features:
• High abrasion resistance;
• High strength, high elongation;
• High pressure resistance and impact resistance;
• Rapid curing;
Product performance:
• Appearance and color: A. Colorless viscous liquid
B. Black liquid,
C. light yellow transparent liquid
• Tensile strength: 30MPa
• Peel strength: 250N/25mm
• Elongation at break: 350%
• Right angle tear strength: 45kN/m
Hardness: 70±5(ShoreA)
• Maximum use temperature: 100 ℃
Method of use:
1 Cable pre-treatment.
(1) Before repairing, stop power transmission, and then remove (not with water) the coal powder and oil on the damaged part and its surrounding surface
(2) Examine the damaged area of the jacket. If the sheath is broken or the core wire is damaged, it should be repaired by pouring method. If the break is small and the core wire is not damaged, it should be repaired by smearing method;
(3) The repair of the insulation layer and the shielding layer of the core wire shall be carried out in accordance with the (Detailed Rules for Hot Repair of Mine Rubber Cable) promulgated by the Ministry of Coal in 1963.
(4) In order to increase the bonding area and bonding strength, the two sections are formed into a conical surface and rasped with wood;
(5) in the polished repair surface, coated with a layer of LPT328 rubber primer, natural drying.
2, mold.
(1) In order to prevent the repair section from being difficult to straighten (I. e. non-concentric) or the cross section of the damaged core wire from increasing after repair, resulting in the thickness of the repaired sheath layer becoming smaller and affecting the insulation and strength of the sheath layer, the thickness of the repair section shall be increased by winding the upper parts of the tapered surfaces at both ends of the repair section with adhesive tape or the like according to the increase of the cross-sectional area of the repair core wire and insulation area.
(2) In order to ensure the bending performance of the repaired section of the cable and prevent the glue from bonding with the phase line, the outer surface of the repaired core line and the insulating layer is wound with a protective tape in the form of half overlapping.
(3) The mold used in the casting method is made of polyethylene sheet roll (thickness 1mm) and its size can be cut freely according to the repair section. Generally speaking: its length should be the distance between the two ends of the repair section wrapped around the outer edge of the viscose belt, and its width is about one and a half times the circumference of the repair section. Two (on the same straight line) round holes with a diameter of 10mm are opened in the middle of the die axis direction and above the tapered surfaces at both ends of the repair section with a hole punch. In order to facilitate the injection of glue in the mold cavity all the air discharge, to ensure the integrity of the repair section.
(4) Straighten the repair section cable. Placed in a horizontal position. Tighten the cut polyethylene sheet onto the repair section adhesive tape with the three round holes facing upwards. Wrap plastic adhesive tape around both ends to secure the seal. Install the flow rubber sleeve and the middle flow rubber sleeve on the funnel at the three round holes respectively.
3, with glue.
(1) According to the damage of the sheath, estimate the amount of glue used, and select cold patchglue with different packaging specifications.
(2) First, open the lid of component A, then partially open the lid of component B, pour all component B into component A, and stir quickly for 1-2 minutes with a relatively dry screwdriver. Mix the two components evenly.
4. Pouring.
(1) Pour the mixed glue into the funnel within 3-5 minutes. Since the mold is translucent, the filling of the glue can be clearly seen. When the cavity mold is filled with glue and glue flows out of the glue sleeves on both sides, glue injection is stopped. However, just after pouring, if the glue liquid level drops, the glue should be replenished in time.
(2) After pouring, when bubbles are found in the mold, the mold where the bubbles are located can be pierced with a needle to release gas,
(3) If the estimated compound is wrong and the mold cavity is not full after pouring, the compound can be added to continue pouring until it is full.
Note:
1) Stop power transmission before repairing, pay attention to the safety of electricity and prevent electric shock;
2) The construction site must be well ventilated.
3) before curing should try to avoid contact with the skin, eyes, if accidentally splashed into the eyes, should quickly rinse with plenty of water and seek medical treatment.
4) Stay away from children.
Storage period:
Room temperature, sealed, dry conditions, 24 months.
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