Insulation materials
A thermal insulation material and thermal conductivity technology, which is applied in the direction of thermal insulation protection pipelines, heat exchange equipment, mechanical equipment, etc., can solve the problems of inapplicable preparation of DCPD polymer composite materials, etc.
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[0523] Materials and Method
[0524] Unless otherwise noted, all glassware was oven dried, and the reaction proceeded under ambient conditions. Unless otherwise noted, all solvents and reagents were purchased from commercial suppliers and used as-is.
[0525] Calculate the dicyclopentadiene (DCPD), tricyclopentadiene (TCPD), and tetracyclopentadiene (TCPD) present in the cycloolefin composition from the weight percentage (wt%) value obtained by gas chromatography (GC) TeCPD), decyl norbornene (DNB), hexyl norbornene (HNB), tolyl norbornene (tolyl-NB) or octyl norbornene (ONB) in mole percent (mol%).
[0526] Obtained DCPD from Cymetech Corporation (Cymetech Corporation) 99). As measured by GC, representative batch 99 contains DCPD (99.83 weight percent) and TCPD (0.17 weight percent). Generally as described in US Patent No. 4,899,005, through heat treatment 99 to prepare a modified DCPD base resin (DCPD-HT) containing 20wt%-25wt% TCPD (and a small amount of higher cyclopentadie...
example 1
[0587] ROMP polymer coated tube
[0588] The resin composition (A) (800 g) was placed in a three-necked round bottom flask and degassed under vacuum for 20 minutes with stirring. The flask was sealed under vacuum, and the resin composition (A) was heated to 35°C in an oven. Cut three-inch long 5.5-inch O.D. low-carbon steel pipe fittings and polish each surface. The outer surface layer of the pipe is removed by sandblasting with hard coarse steel grit (GH 25) until the depth profile measured by replica tape (ASTM4417) is at least 2.0 mils. The surface of the grit-blasted pipe was cleaned by spraying with acetone and scrubbing with a towel, followed by air drying. Heat the tube to 50°C in an oven. At the same time, a cylindrical mold with a solid steel bottom was heated to 35°C in an oven. The tube and mold were removed from the oven, and the tube was placed inside the mold, with an o-ring positioned at the lower part of the tube surface sealing the inside of the tube with res...
example 2
[0592] ROMP polymer-coated pipes and ROMP polymer-coated field joints
[0593] Sandblasting 1.5" outside diameter (OD), 24" long SAE 4130 grade steel pipe with G25 coarse steel grit until the blasting profile is 2.0 mils and all visible dark corrosion / scale ( mill scale). Use compressed air to remove dust from the pipe surface. Heat the cylindrical 24" aluminum mold to 35°C in an oven. Heat the sandblasted tube to 60°C in the oven. Remove the heated tube from the oven and quickly assemble it in the aluminum mold. In vacuum The resin composition (B) (6,590 g) was degassed for 1 hour and heated to 35° C. The degassed resin composition (B) was catalyzed by adding the catalyst composition (A) (132 g). 6,590 grams), and poured the catalyzed resin into a hot aluminum mold containing a hot steel pipe. The catalyzed resin was allowed to exotherm to form a cured polymer. The ROMP polymer-coated tube was cooled to room temperature.
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