Semi-conductive Cushion Water Blocking Tape


  • Payment Terms T/T, L/C, D/P, etc.
  • Delivery Time 20 days
  • Place of Origin China
  • Port of Loading Shanghai, China
  • Shipping By sea
  • HS Code 5603941000
  • Packaging Carton or wooden box, 50kg/pack or according to client's requirement
  • Product Detail

    FAQ

    Product Introduction

    The semi-conductive cushion water-blocking tape is compounded with semi-conductive polyester fiber non-woven fabric, semi-conductive adhesive, high-speed expansion water-absorbing resin, semi-conductive fluffy cotton and other materials.
    Among them, the manufacture of the semi-conductive base layer consists of two parts. One is to uniformly distribute the semi-conductive compound on a relatively flat base fabric with temperature-resistant and high-strength; the other one is made of the semi-conductive compounds to be evenly distributed on the base fabric with fluffy properties. The semi-conductive resistance water material uses powdery polymer water-absorbing material and conductive carbon black, and the water-blocking material is attached to the base fabric by padding or coating. The semi-conductive resistance water substrate used here not only has a cushion effect, but also has a water blocking effect.

    The semi-conductive cushion water blocking tape is usyally used in the metal sheath of high-voltage and ultra-high-voltage power cables. The insulation of the power cable during the working process will produce temperature differences. The metal sheath will expand and contract due to thermal expansion and contraction. In order to adapt to the thermal expansion and contraction phenomenon of the metal sheath, it is necessary to leave a gap in its interior. This provides the possibility of water leakage, which leads to breakdown accidents. Therefore, it is necessary to use a water-blocking material with greater elasticity, which can change with temperature while playing a water blocking role.
    Under normal temperature, the semi-conductive chshion water-blocking tape plays the role of close electrical contact between the insulating shield and the metal sheath, making the insulating shield and the metal sheath equipotential, greatly improving the stability and safety of the high-voltage cable during working .
    In the production process of the cable metal sleeve, the semi-conductive cushion water-blocking tape is used as a liner to prevent the wire core from being damaged. During the installation and use of the cable, it can resist the intrusion of external media (especially water), has a longitudinal water blocking function, and can limit the entering water to a limited length when the metal sheath is damaged.
    The semi-conductive cushion water-blocking tape uses a special process. This product has low resistance and semi-conductive characteristics. It can not only play the role of water blocking, but also has the effect of weakening the electric field and mechanical cushion, reducing the damage of the cable during working. It greatly improves the safety of power cables and prolongs the service life. It is an effective protective barrier for power cables.

    The semi-conductive cushion water blocking tape we provide has the following characteristics:
    1) The surface is flat, without wrinkles, notches, flashes and other defects;
    2) The fiber is evenly distributed, the water blocking powder and the base tape are firmly bonded, without delamination and powder removal;
    3) High mechanical strength, easy for wrapping and longitudinal wrapping processing;
    4) Strong hygroscopicity, high expansion rate, fast expansion rate and good gel stability;
    5) The surface resistance and volume resistivity are small, which can effectively weaken the electric field strength;
    6) Good heat resistance, high instant temperature resistance, and the cable can maintain stable performance at instant high temperatures;
    7) High chemical stability, no corrosive components, resistant to bacteria and mold erosion.

    Application

    It is suitable for the cushion layer in the metal sheath of high voltage and ultra high voltage power cables.

    Technical Parameters

    Performance index 

    BHZD150

    BHZD200

    BHZD300

    Nominal thickness (mm)

    1.5

    2.0

    3.0

    Tensile strength

     (N/cm)

    ≥40

    ≥40

    ≥40

    Breaking elongation

    (%)

    ≥12

    ≥12

    ≥12

    Expansion speed

    (mm/min)

    ≥8

    ≥8

    ≥10

    Expansion height

    (mm/3min)

    ≥12

    ≥12

    ≥14

    Surface resistance

    (Ω)

    ≤1500

    ≤1500

    ≤1500

    Volume resistance

    (Ω·cm)

    ≤1×105

    ≤1×105

    ≤1×105

    Water ratio

    (%)

    ≤9

    ≤9

    ≤9

    Long term stability

    (℃)

    90

    90

    90

    Short term stability

    (℃)

    230

    230

    230

    Note: The width and length of the semi-conductive cushion water blocking tape can be provided according to customers’ requirements.

    Storage Method

    1) The product should be stored in a clean, hygienic, dry, and ventilated warehouse. It should not be stacked with flammable products and strong oxidants, and should not be near the fire source;
    2) The product should avoid direct sunlight and rain;
    3) The product should be packaged intact, avoid damp, and avoid contamination;
    4) The product should be protected from heavy pressure, beating and other mechanical damage during storage and transportation.

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  • Q1: Can we visit your company?
    A: we are looking forward to your arrival and we will lead you to visit our factory.

    Q2: How fast can I get the quotation?
    A:We usually quote within 24 hours for normal cable materials after we get your inquiry. If you are very urgent to get the price, please call us or tell us in your email so that we will regard your inquiry priority.

    Q3: What is your terms of packing?
    A: Wooden drum, plywood pallet, wooden box, carton are for option, depends on different material or client’s requirements.

    Q4: What is your terms of payment?
    A: T/T, L/C, D/P, etc. We’ll show you the photos of the products and packages before you pay the balance.

    Q5: What is your terms of delivery?
    A: EXW, FOB, CFR, CIF. You can choose the one which is the most convenient or cost effective for you.

    Q6: How about your delivery time?
    A: Generally, it will take 7 to 15 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.

    Q7: What is your sample policy?
    A: Sample for your tests are available, Please contact our sales to apply the free sample.

    Q8: How do you make our business long-term and good relationship?
    A: 1. We keep good quality and competitive price to ensure our customers benefit.
    2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.

    Q9: Do you supply all the cable materials according to the cables we produce?
    A: Yes, we can. We have technician on production technology which is engaged in analyzing cable structure so as to list all the materials you need.

    Q10: What are your business principles?
    A: Integrating resources. Helping customers choose the MOST suitable materials, saving costs and improving quality.
    Small profits but quick turnover: Helping customers’ cables become more competitive in the market and develop rapidly.

    Q1: Can we visit your company?
    A: we are looking forward to your arrival and we will lead you to visit our factory.

    Q2: How fast can I get the quotation?
    A:We usually quote within 24 hours for normal cable materials after we get your inquiry. If you are very urgent to get the price, please call us or tell us in your email so that we will regard your inquiry priority.

    Q3: What is your terms of packing?
    A: Wooden drum, plywood pallet, wooden box, carton are for option, depends on different material or client’s requirements.

    Q4: What is your terms of payment?
    A: T/T, L/C, D/P, etc. We’ll show you the photos of the products and packages before you pay the balance.

    Q5: What is your terms of delivery?
    A: EXW, FOB, CFR, CIF. You can choose the one which is the most convenient or cost effective for you.

    Q6: How about your delivery time?
    A: Generally, it will take 7 to 15 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.

    Q7: What is your sample policy?
    A: Sample for your tests are available, Please contact our sales to apply the free sample.

    Q8: How do you make our business long-term and good relationship?
    A: 1. We keep good quality and competitive price to ensure our customers benefit.
    2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.

    Q9: Do you supply all the cable materials according to the cables we produce?
    A: Yes, we can. We have technician on production technology which is engaged in analyzing cable structure so as to list all the materials you need.

    Q10: What are your business principles?
    A: Integrating resources. Helping customers choose the MOST suitable materials, saving costs and improving quality.
    Small profits but quick turnover: Helping customers’ cables become more competitive in the market and develop rapidly.