公开(公告)号：US20230302491A1

公开(公告)日：2023-09-28

申请号：US17800209

申请日：2021-02-18

Applicant: DOW SILICONES CORPORATION ,  DOW GLOBAL TECHNOLOGIES LLC

Inventor： Timothy MORLEY ,  Kshitish PATANKAR ,  Bradley W. TUFT ,  Thomas J. PARSONS ,  David SHAWL ,  Kaila M. MATTSON ,  Veronika IRKHA ,  Torrey CLARK ,  Dimitris KATSOULIS ,  Mark F. SONNENSCHEIN

IPC: B05D7/14 ,  F16L59/15 ,  B05D5/00 ,  B05D3/10

CPC classification number: B05D7/146 ,  B05D3/108 ,  B05D5/005 ,  F16L59/15 ,  B05D2254/02 ,  B05D2518/10 ,  B05D2601/22

Abstract: This disclosure relates to a method for the in-situ encapsulation and/or insulation of piping using silicone-based compositions such as liquid silicone rubber materials and/or silicone foams. The method is useful for encapsulation and/or insulation of underground piping, particularly underground piping carrying high temperature (e.g., >120° C.) fluids, such as steam. The in-situ encapsulation and/or insulation may be done by inserting a hose into a pipe cavity so that a first end of the hose is remotely positioned next to the pipe and a second end of the hose is attached to a pumping system. A silicone composition is pumped through the hose and into the cavity surrounding from the remote first end of the tubing at a first predefined rate, and the hose is gradually withdrawn from the cavity at a second predefined rate. The silicone material is allowed to cure and become rigid, thereby encapsulating and/or insulating the pipe.