Repair compound for repairing composite material and method for repairing composite material using the repair compound
A technology of composite materials and repairing materials, which is applied in the field of repairing composite materials and can solve problems such as unsuitability and cumbersome repairing process steps.
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preparation example Construction
[0026] The present invention has no special limitation on the preparation of the first composition, for example, a hydroxyl-terminated silicone rubber prepolymer and a first inorganic filler such as hollow glass microspheres, pulverized rigid heat insulation tile scraps and hydrophobic gas phase II Silica is prepared by grinding in a mortar for 10 to 60 minutes to fully mix the ingredients.
[0027] The present invention has no special limitation on the preparation of the second composition, for example, the inorganic filler such as hollow glass microspheres and rigid heat insulation tile scrap pulverization and crosslinking agent such as orthosilicic acid Ethyl ester and a catalyst such as dibutyltin dilaurate are placed in a mortar and ground for 30 to 60 minutes so that the ingredients are fully mixed and evenly prepared.
[0028] The room temperature curing silicone rubber continuous phase used in the method of the present invention comprises a hydroxyl-terminated silicone...
preparation example 1
[0034] Preparation of a first composition in a repair compound for repairing rigid thermal insulation tiles
[0035] Weigh 50g of hydroxyl-terminated polydimethylsiloxane with a viscosity of 12000cst, 15g of hollow glass microspheres, 10g of crushed rigid insulation tile scraps, and 5.5g of hydrophobic fumed silica, and place them in a research chamber with a volume of 250mL. Grinding in a bowl for 10 minutes, so that the above-mentioned ingredients are fully mixed and uniform, and the first composition of the repair material is obtained.
[0036] Preparation of a second composition in a repair compound for repairing rigid thermal insulation tiles
[0037] Weigh 15g of hollow glass microspheres, 10g of crushed rigid insulation tile scraps, 5g of ethyl orthosilicate and 0.5g of dibutyltin dilaurate, place them in a mortar with a volume of 250mL, grind for 30 minutes, and make the above The ingredients are mixed thoroughly to form a second composition of repair compound.
[00...
preparation example 2 to 10
[0041] Except for the contents shown in the following table, it was carried out substantially in the same manner as Preparation Example 1.
[0042] After testing, the density of each repairing material thus prepared before curing is 0.35-0.55g / cm 3 , the density after curing is 0.45~0.65g / cm 3 .
[0043]
[0044] Repair example 1
[0045] Such as figure 1 As shown in (a), a 150mm × 150mm × 25mm rigid thermal insulation tile with a surface compounded with a high emissivity coating is installed on a titanium alloy metal load-bearing structural substrate through a strain isolation pad and room temperature curing silicone rubber. The surface of the heat insulation tile has an irregular pit-like damage with a maximum diameter of 30mm and a depth of 20mm. This part is processed into a regular cylindrical pit with a diameter of 30mm and a depth of 20mm by a CNC tool, and then a piece with a diameter of 29.8mm is processed. 18mm rigid heat insulation tile column, the side and b...
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Abstract
Description
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