58results about How to "Long-lasting and stable performance" patented technology

The invention provides an efficient and lasting antibacterial polyamide fiber based on silver-loaded zirconium phosphate and a preparation method thereof. The efficient and lasting antibacterial polyamide fiber based on the silver-loaded zirconium phosphate is characterized in that the fiber comprises a polyamide matrix, and silver-loaded zirconium phosphate powder is dispersed in the polyamide matrix. The preparation method includes the steps that first, the zirconium phosphate powder and a poly sulfhydryl compound are dispersed in organic solvent; then silver nitrate is added to be stirred for 12-24 hours, the organic solvent is removed through the spray drying process, the obtained powder is placed in the environment of 800-1200 DEG C to be calcined for 1-6 hours, and accordingly silver-loaded zirconium phosphate nano-powder is obtained; second, the silver-loaded zirconium phosphate nano-powder and polyamide resin are pelleted through a double-screw pelletizer, so that a polyamide master batch with the antibacterial function is obtained; third, the polyamide master batch with the antibacterial function and the polyamide resin are subjected to melt spinning, and thus the antibacterial polyamide fiber based on the silver-loaded zirconium phosphate is prepared. The antibacterial polyamide fiber has the advantages of being efficient and lasting in antibacterial action.

The invention discloses a compound medical dressing and a preparation method thereof, belonging to the field of compound medical dressings. The compound medical dressing comprises bacterial cellulose membranes, collagens and crosslinking agents, wherein the collagens are crosslinked on the bacterial cellulose membranes via the crosslinking agents. The preparation method comprises the steps of adding the purified bacterial cellulose membranes to a collagen solution containing the crosslinking agents and enabling the bacterial cellulose membranes and the collagens to carry out crosslinking reaction, thus obtaining the compound medical dressing. The loads of the collagens on the bacterial cellulose membranes and the loading stability of the collagens are improved by using the crosslinking agents, so that the properties of the prepared compound medical dressing are more lasting and stable. The method is simple, is easy to operate and has relatively high practicability.

The antistatic paint is prepared with resin varnish 100(in weight portions, the same below), high structure carbon black 5-40 and preferably 20-25, solvent 15-50, and coupling agent 0.1-0.3. The resin varnish is acrylate, epoxy resin, polyester or polyurethane. The production process includes stoving carbon black at 60-100 deg.c, spraying carbon black with coupling agent, adding carbon blac, resin and solvent successively into container while stirring, and ball milling. The paint of the present invention has the same antistatic effect as antistatic plastic but much less consumption and thus much lower cost, and has no influence on the other performance, such as mechanical performance, of the painted body.

The invention discloses a high-temperature-resistant and high-salt-resistant fine gel particle as a profile control agent as well as a preparation method and an application of the fine gel particle. The preparation method of the fine gel particle comprises the following steps of firstly, adding modified starch, a monomer A, a monomer B, a crosslinking agent, an initiator and an accelerant into a reaction kettle according to a certain ratio; and after finishing the polymerization reaction of the six components to form integrated water-based gel, drying, crushing, granulating, screening and performing other process steps to obtain the fine gel particle. The application method of the high-temperature-resistant and high-salt-resistant fine gel particle is as follows: a certain quantity of fine gel particles prepared by using the preparation method are added into a Bingham fluid, the gel particles can be stably suspended without settling under static and dynamic conditions, and then, the whole fluid is injected to the stratum by means of pumping pressure. By using the high-temperature-resistant and high-salt-resistant fine gel particle and the application method thereof, disclosed by the invention, the construction success rate of the gel particle can be greatly increased, and a favorable deep profile control effect can be achieved.