2results about How to "Short storage time" patented technology

The present application relates to the field of electronic component welding, and particularly relates to a water-washing soldering paste and an application method thereof. The water-washing soldering paste comprises a first paste and a second paste. The first paste comprises a solvent, alloy powder and triisopropanolamine. The second paste comprises the solvent, water-based epoxy resin, activator, thixotropic agent and antioxidant. The solvent only comprises one or more of amphiphilic alcohol compound, polyhydric alcohol compound, polyether compound and glycol ether compound. The activator is organic acid. The antioxidant comprises phenolic compound and phosphite compound. Triisopropanolamine, as a corrosion inhibitor, promotes the cross-linking of water-based epoxy resin on the surface of alloy powder particles to form a dense protective film, and inhibits the hydrolysis of antioxidant and the oxidation of metal particles, thereby reducing the risk of grape effect.

The application relates to the material field and relates to a preparation method of a polyurethane microporous elastomer, which comprises the following steps: step 1, heating a mold to 90 DEG C + / - 5 DEG C, and injecting a component a into the mold; step 2, keeping the mold temperature, and injecting a component b into the mold; step 3, rotating the mold to mix the component a and the component b in the mold, heating the mold to 110 DEG C + / - 5 DEG C, and continuously rotating the mold to make the mixture react and solidify to form a product, and the product is aged and demolded to obtain the polyurethane microporous elastomer. The application can guarantee the performance of the finally obtained polyurethane microporous elastomer.