A subsea thermal insulating structure with a flexible inner tie coat which is the reaction product of a cold curing phenolic resin and a partial phosphate ester; a foam insulating layer which is the reaction produce of a cold cure phenolic syntactic resin and a partial phosphate ester; and an outer
A subsea thermal insulating structure with a flexible inner tie coat which is the reaction product of a cold curing phenolic resin and a partial phosphate ester; a foam insulating layer which is the reaction produce of a cold cure phenolic syntactic resin and a partial phosphate ester; and an outer protective layer which is the reason product of a cold cure phenolic resin and a partial phosphate ester.
대표청구항▼
1. In combination with a substrate for use subsea, a thermal insulating structure applied to the substrate and for use subsea, the thermal insulating structure including comprising: a flexible inner tie coat which is bonded to the substrate, the tie coat consisting of the reaction product of a first
1. In combination with a substrate for use subsea, a thermal insulating structure applied to the substrate and for use subsea, the thermal insulating structure including comprising: a flexible inner tie coat which is bonded to the substrate, the tie coat consisting of the reaction product of a first material and a second material, the first material consisting of respective amounts of a cold curing phenolic resin and an anti cissing agent, and respective amounts of materials selected from the group consisting of a plasticizer, a silane coupling agent, fumed silica, cenospheres, water, and a dispersion aid, and the second material consisting of a partial phosphate ester and respective amounts of materials selected from the group consisting of a cure accelerator and water; a foam insulating layer which is the reaction product of a first material including a cold cure phenolic syntactic resin and a second material including a partial phosphate ester and which insulating layer includes between 15 and 30% by weight cenospheres and a nitrile butadiene rubber flexibilizer up to a maximum of 20% by weight; and an outer protective layer which is the reaction product of a first material including a cold cure phenolic resin and a second material including a partial phosphate ester, the outer protective layer having a greater thickness than the inner tie coat layer. 2. The combination according to claim 1, in which the tie coat, insulating layer and/or outer layer each includes between 0.5 and 2.5% by weight of an amino functional silane coupling agent. 3. The combination according to claim 1, in which in the tie coat the first material includes 50-75% by weight phenolic resin. 4. The combination according to claim 1, in which the phenolic resin of the tie coat first material is a resol phenolic resin, has a water content of not greater than 16% by weight, and/or includes up to 2% by weight ethanediol as a plasticiser. 5. The combination according to claim 1, in which the tie coat first material includes between 1 and 4% by weight fumed silica, and includes between 15 and 30% by weight cenospheres. 6. The combination according to claim 1, in which the cenospheres have a specific gravity of between 0.005 and 0.02. 7. The combination according to claim 1, in which the tie coat second material includes: between 90 and 98% by weight partial phosphate ester; up to 1% by weight sulphonic acid as a cure accelerator; and/or up to 10% by weight water. 8. The combination according to claim 1, in which the ratio of first to second materials of the tie coat is between 5:1 and 10:1. 9. The combination according to claim 1, in which the proportion of first material to second material of the insulating layer is between 4:1 and 10:1. 10. The combination according to claim 1, in which the ratio of first material to second material of the outer layer is between 10:1 and 20:1. 11. The combination according to claim 1, in which the insulating layer first material includes between 35 and 75% by weight phenolic resin; in which the phenolic resin of the insulating layer first material is a resol phenolic resin; and/or has a water content not greater than 16% by weight. 12. The combination according to claim 1, in which the insulating layer first material includes up to 7% by weight di ethyl phosphonate as a plasticizer. 13. The combination according to or claim 1, in which the insulating layer first material includes: up to 2.5% by weight of the silane coupling agent; includes up to 5% by weight glass strands between 3 and 12 mm long; and includes up to 5% by weight zirconia fibre. 14. The combination according to claim 1, in which the insulating layer second material includes up to 3% by weight para toluene sulphonic acid as a curing accelerator, and includes water. 15. The combination according to claim 1, in which: the outer layer first material includes between 50 and 100% by weight of the phenolic resin; the phenolic resin of the outer layer first material is a resol phenolic resin; the phenolic resin of the outer layer first material has a water content of not greater than 16% by weight; the outer layer first material includes up to 2.5% by weight of a silane coupling agent; the outer layer first material includes up to 1% by weight ethanediol; and/or the outer layer first material includes up to 4% by weight fumed silica. 16. The combination according to claim 1, in which fibre reinforcement is included in the outer layer, and the fibres are of glass or carbon. 17. The combination according to claim 1, in which the inner tie coat layer is 0.15 to 1 mm thick. 18. The combination according to claim 1, in which the outer protective layer is 3 to 5 mm thick.
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이 특허에 인용된 특허 (3)
Du Pont Preston S. (Northridge CA) Freeman Janet E. (Pasadena CA) Ritter Robert E. (Palos Verdes Estates CA) Wittmann Alois (Palos Verdes CA), Fiber-reinforced syntactic foam composites and method of forming same.
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