POLYSYSTEM 400P two-component PU system is designed for production of rigid polyurethane foam with mineral filler used for hydrothermal insulation of pipelines by the "pipe in form" method. Foaming agents - freon 141b and CO2 (water). Filled polyurethane foam obtained from the components of this system is characterized by excellent curing and by even number-density distribution along the pipe length. Properties of polymineral foam insulation obtained with the use of POLYSYSTEM 400P fully comply with the state standard GOST P 56227-2014 "Pipes and shaped steel products in polymineral foam insulation. Technical requirements".
POLYSYSTEM 400P Component A is a mixture of simple polyethers, foaming agents and functional additives.
Component B is polymeric diphenylmethanediisocyanate of low viscosity (PMDI/PIC: WannatePM-200, Desmodur44V20L, LupranateM20 S, VoranateM229, VoratecSD100 and their counterparts produced by other manufacturers). Filler - fine quartz sand, andesite flour, etc. with a moisture content of not more than 2% (not included into the supply package). Quartz sand fraction is selected according to the test results.
Indicators ;POLYSYSTEM 400P Component A ; POLYSYSTEM 400P Component B
Appearance; Viscous liquid, color: from colorless to brown;According to the manufacturer's technical data
Density (25 °C), g/cm3; 1.05 – 1.15 ;According to the manufacturer's technical data
Viscosity (25 °C), MPa·s; 350 - 550 ;According to the manufacturer's technical data
* after the component homogenization.
Foaming parameters (mass ratio of Components A : B : filler = 100 : 140 : 160)
Indicators* ;Measurement unit ;Norm
Start time ;s ;65 - 110
Gelation time ;s ;150 - 250
Apparent density during free foaming; kg/m3; 60 - 90
Foaming conditions: stirring with a mixer for 15 s at a rotation speed of 3000-1. Components' temperature during foaming: (20 - 22) °C. Foaming characteristics may vary depending on the foaming conditions.
Typical properties of polymineral foam insulation based on POLYSYSTEM 400P PU-system
;Indicator name ;Measurement unit ;Value
1 ;Total density, not less than ;kg/m³ ;270
2 ;Density of insulation middle layer, not less than ;kg/m³ ;150
3; Compressive strength at 10% radial deformation, not less than; MPa ;not less than 1.2
4 ;Water absorption at full immersion, not more than ;% by volume ;0.5
5 ;Thermal conductivity coefficient of middle insulation layer at an average temperature t = 50±3 °C, no more than; W/m∙°C; 0.035
POLYSYSTEM 400P Component A; 100
Component B ;140
Recommendations for processing:
The key conditions for the qualitative filling of pipes with polyurethane foam are: compliance with the accuracy of dosing and temperature conditions of the components' processing regime; sufficient mass of the poured PU-system portion; proper preparation of the pipework metal surface and appropriate temperature of the mold working surface.
Rigid polyurethane foam with mineral filler is obtained by pouring PU-system by the "pipe in form" method. Prior to pouring the system, the surface of metal pipes gets cleaned off oil, scale and rust. The process of mixing Components A, B and filler in the desired ratio, and pouring the obtained mixture in the forming equipment, is performed by means of special mixing equipment. Technical documentation for the equipment and the process of obtaining finished products are the guidelines for the PU-system processing.
TU 20.16.40-001-28643082-2018. POLYSYSTEM 400P polyurethane system. Certificate of conformity TU, state standard GOST P56227-2014 No. 01084 dd. 14.03.2019 (Federal Service for Technical and Export Control, Autonomous Scientific Organization "Central Scientific and Research Institute of Corrosion and Certification").
Handling and storage
POLYSYSTEM 400P Component A warranty period of storage is 6 months - when stored in a dry place in a hermetically sealed manufacturer's container at a temperature of (10 – 25) °C. Component B warranty period and storage conditions - in accordance with the technical data provided by the manufacturer.
The POLYSYSTEM 400P PU-system technical requirements and Component B safety passport are the guidelines for the transportation, storage, handling and safety of these materials. These documents are updated periodically. Ask manufacturers and/or suppliers for updated versions of relevant documents before using the PU-system. When working with the above-mentioned materials, it is necessary to pay attention to personnel health, to compliance with safety and health regulations, as well as to environment safety.
The information contained in this document is based on our current level of technical knowledge and experience. All information and technical support are provided (orally, in writing or in any other form) without any legal warranty or assurance and are subject to change without notice. Due to the large number of factors that may affect the processing and use of our materials, it is hereby understood that the processing facilities that use our materials, technical information or technical support assume a direct obligation to release us from any liability arising thereof. It is expressly agreed that processing facilities must mandatorily conduct their own testing and assessment of our materials' suitability for specific applications, including an assessment of the applicability of our materials in terms of their compliance with applicable laws, rules and regulations relating to industrial safety, occupational health and environmental protection. Any statement or recommendation that is not contained in this document is not authorized and does not put us under any kind of obligation. No provision of this document should be construed as recommending the use of any product or information in violation of any patent for the material or its use. Appropriately protected rights, including the rights of third parties, as well as existing laws and regulations must be observed by the purchaser of our products at their own responsibility.