Himtrust SKT-40/55

For the manufacture of heat-resistant, closed-cell rigid polyurethane foam. Field of application includes production of thermal insulation of oil and gas pipelines using the "pipe in the pipe" method. The density in the core of the polyurethane foam (finished product) must be at least 60 kg/m3.


Component A: Himtrust KAT-40/55 (packing: 220 kg, 50 kg.)

Component B: (container: 250 kg, 50 kg.)

Product description

Polyol (component A) is a transparent liquid from yellow to brown colors.

Isocyanate component (component B) - polymer diphenylmethanediisocyanate brands: "Lupranat M 20 S", "Millionate-MR 200", "Wannate-PM 200", "Desmodur VKS 20 F", "Suprasec 5005", "Cosmonate M-200", "Ongronate 2100" - transparent non-delaminating brown liquid.

Physical and mechanical parameters

Parameter Value
Start time 40-45 seconds
Rise time (time for gelatinization) 160 -170 seconds
Apparent density during time of free foaming 44-46 kg/m3
Density (in the core) 85 kg/m3
Compression durability at 10% deformation in the radial direction 0.64 MPa,
Water absorption by boiling for 90 min 8%
Coefficient of thermal conductivity at an average temperature of 50°C 0.029 W / m * K
Thermal conductivity coefficient at an average sample temperature of 20°C 0.026 W / m*K
Shear strength in the axial direction at a temperature of 20-23°C 0.34 MPa

Preparation and processing

To ensure the reactivity and viscosity of the components, before processing bring the temperature of the component A to (+20) °C- (+25) °C, component B (+20)°C- (+25)°C.

Mix the polyol component (component A) with a paddle for 10-15 minutes or roll the barrels in a horizontal position for 20-30 minutes. The isocyanate component (component B) does not require any stirring if it was stored at a temperature not lower than +15°C. If the isocyanate component was stored at a temperature below +15°C, then slowly heat it to a temperature not higher than +25°C. Roll the barrel in a horizontal position to a homogeneous (homogeneous) state.

Processing requirement

  1. Components ratio A to B by weight equals to 100: 140.
  2. Set the temperature in the filling machine for the components A and B to 23-25°C.
  3. The ambient temperature must be at least 15°C.
  4. The temperature of the pipe and shell must be at least 20°C.
  5. After filling, maintain the pipes at a temperature of at least 15°C for at least 48 hours.
  6. The density in the finished product should be not less than 60 kg / m3.
  7. Processing should be carried out on high-and low-pressure filling machines in accordance with Himtrust Technical Conditions.

Health effects and precautions

Flammable liquid. Contains flammable compounds, keep away from sources of fire, sparks, do not smoke near by the liquid. It can cause an irritation, if contacts the skin; and it can cause irreversible consequences in case of a contact with eyes. Can contaminate objects in the environment.

When working with the system, use an insulating gas mask, a BKF or B gas mask, safety glasses with side pads, impermeable synthetic rubber gloves, clothing and shoes. The space where the work is carried out must be equipped with exhaust ventilation, workplaces – local suction and fire extinguishing means.

Storage recommendations

The warranty period of storage is 12 months from the date of manufacture under 20°C and without opening the barrels.

Rights

Production of polyurethane materials and foamed polymeric materials is protected by patents and patent applications. This publication does not grant the right to carry out patented technological processes. The information and recommendations contained in this publication fully reflect Himtrust’s knowledge of the product to date. All the information is accurate to the best of our knowledge at the time of the publication. Nothing in this publication should be construed as a warranty. In all circumstances, it is the user’s responsibility to determine the applicability of such information or the product itself to the user's specific purpose

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Start time, (sec): 15-25
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Start time, (sec): 20-30
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Start time, (sec): 20-30
Ratio A:B: 100 : 110
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Start time, (sec): no
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