本发明涉及制备纤维增强聚氨酯/聚异氰脲酸酯泡沫的块,其中泡沫的膨胀受到形成隧道的双层带压机的壁的限制,该纤维增强聚氨酯/聚异氰脲酸酯泡沫的块由储存气体的小室组成,其中气体有利地具有低热导率,且泡沫块的密度小于50kg.m‑3,且其纤维Cf的含量占纤维增强泡沫块的至少4wt%,其中纤维ti的浸渍时间小于聚氨酯/聚异氰脲酸酯泡沫的乳化时间tc。
The present invention relates to a preparation of a block of fiber-reinforced polyurethane/polyisocyanurate foam in which the expansion of the foam is constrained by the walls of a double belt laminator forming a tunnel, the block of fiber-reinforced polyurethane/polyisocyanurate foam being composed of cells storing a gas, advantageously having low thermal conductivity, and exhibiting a density of less than 50 kg·m−3 with a content of fibers Cf representing at least 4% by weight of the block of fiber-reinforced foam, in which the impregnation time of the fibers ti is less than the cream time tc of the polyurethane/polyisocyanurate foam.
一种制备用于隔热储罐中的厚板的聚氨酯或聚异氰脲酸酯泡沫块的方法
2023-10-03
Patent
Electronic Resource
Chinese
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 / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / C08J Verarbeitung , WORKING-UP / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / F17C Behälter zum Aufnehmen oder Speichern verdichteter, verflüssigter oder verfestigter Gase , VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES |