Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Spray polyurethane foam material for track board and construction method thereof
The invention relates to a spray polyurethane foam material for a track board and a construction method thereof, wherein a spray polyurethane component A consists of polyether polyol, polyester polyol, a foam stabilizer, a foaming agent, a catalyst, a flame retardant, an antioxidant and a modified titanium dioxide-glass fiber powder mixture; and a component B consists of an isocyanate mixture. The construction method comprises the following steps: pre-sealing a rail fastener (a); smearing a primer (c) on the track board (b); then spraying a 5-10mm polyurethane foam material (d); and finally smearing an aliphatic polyurethane coating (e) to accomplish construction. The spray polyurethane foam material provided by the invention is mainly applied to the track board of a high speed railway to fundamentally solve the temperature cracking problem of a concrete member. The material provided by the invention has a thermal insulation effect and excellent mechanical property, and the bonding strength with the track board can reach over 0.3MPa.
Spray polyurethane foam material for track board and construction method thereof
The invention relates to a spray polyurethane foam material for a track board and a construction method thereof, wherein a spray polyurethane component A consists of polyether polyol, polyester polyol, a foam stabilizer, a foaming agent, a catalyst, a flame retardant, an antioxidant and a modified titanium dioxide-glass fiber powder mixture; and a component B consists of an isocyanate mixture. The construction method comprises the following steps: pre-sealing a rail fastener (a); smearing a primer (c) on the track board (b); then spraying a 5-10mm polyurethane foam material (d); and finally smearing an aliphatic polyurethane coating (e) to accomplish construction. The spray polyurethane foam material provided by the invention is mainly applied to the track board of a high speed railway to fundamentally solve the temperature cracking problem of a concrete member. The material provided by the invention has a thermal insulation effect and excellent mechanical property, and the bonding strength with the track board can reach over 0.3MPa.
Spray polyurethane foam material for track board and construction method thereof
ZHU NING (Autor:in) / WANG WANJIN (Autor:in) / HE KUI (Autor:in) / XIA YIBING (Autor:in) / DONG QUANXIAO (Autor:in) / WU JINGPENG (Autor:in) / FAN YONG (Autor:in)
29.04.2015
Patent
Elektronische Ressource
Englisch
IPC:
C08G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C08J
Verarbeitung
,
WORKING-UP
/
C08K
Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe
,
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
/
E01B
PERMANENT WAY
,
Gleisoberbau
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