101results about How to "With elastic deformation ability" patented technology

A modified asphalt particle having a high softening point, a preparing method thereof and applications of the particle are disclosed. The diameter of the particle is not more than 120 [mu]m. The particle includes a core made of base asphalt and a shell formed by a modifying agent, and includes 7-9 parts by mass of the core and 1-3 parts by mass of the shell. The modifying agent includes polymerized sulfur and free sulfur, and the weight ratio of the polymerized sulfur to the free sulfur in the modifying agent is 3:7-7:3. The modified asphalt having a high softening point is prepared by melting and polymerizing sulfur, then separately injecting the polymerized sulfur and melt asphalt from two ends of a reactor column to bring the polymerized sulfur and the melt asphalt into countercurrent contact, and then spraying the product to a quenching liquid containing a stabilizing agent to quench the product. According to the modified asphalt having a high softening point, the base asphalt is covered with a layer of high-elasticity polymerized sulfur, and the prepared product is low in particle diameter, has certain elastic deformation capability, has excellent high-temperature resistance, and can be stably stored at room temperature.

The invention discloses a sealing hoop. The sealing hoop is used for being connected with pipe fittings in a sealing mode, and the ends of the pipe fittings are provided with matched flange plate structures. The sealing hoop comprises a hoop body and hoop lateral walls, wherein the hoop body is matched with the outer edges of the two matched flange plates in the peripheral direction, the hoop lateral walls are oppositely arranged on the hoop body and extend inwards in the radial direction, the hoop body and the two hoop lateral walls define a limiting through groove, the inside space of the limiting through groove is used for containing the two flange plates, the distance between the two hoop lateral walls in the axial direction of the hoop body is called as limiting distance, and the position of the minimum limiting distance is closer to the axis of the hoop body compared with the position of the maximum limiting distance. The sealing hoop is divided into at least two parts in the peripheral direction, and the divided parts are connected end to end and are fixedly connected into a whole through connecting pieces. The structure of the limiting groove body enables both radial pressure and the opposite axial pressure to be applied to the two flange plates needing connecting under the action of the sealing hoop, so that the two discs are compacted and the sealing performance is reinforced. The split structure enables the sealing hoop to be installed conveniently and operated easily.

The invention discloses a high-softening-point asphalt particle. The prepared high-softening-point asphalt particle has a shell-core structure, the outer layer of the asphalt particle is coated with a layer of high polymer with temperature sensitivity, the high polymer can deform along with temperature rise and has a high softening point, and the core layer of the asphalt particle is a modified asphalt mixture and has high mechanical property and hydrophobic capacity. When the shell layer of the asphalt particle is slightly melted, an optimizing liquid in the core layer of the asphalt particle can effectively increase the viscosity of the high polymer of the shell layer of the asphalt particle, the blocking effect of the asphalt particle on microcracks of the well wall is avoided, and the temperature use range of the high-softening-point asphalt particle is effectively expanded. The process is simple, easy to control and convenient to operate, the particle size of asphalt particles is small, the softening point is high, the microcrack blocking effect is good, and the market prospect is large.

The invention provides a lead-free pacemaker and a lead-free pacemaker system. The lead-free pacemaker and the lead-free pacemaker system have the advantages that a shell of a pacemaker body of the lead-free pacemaker is designed to be of a bent pipe structure, accordingly, the lead-free pacemaker can be implanted in locations with narrow spaces in a bent manner and can effectively cling to myocardial tissues or vascular wall tissues which are of curved surface structures, good pace-making or perception effects can be realized, the patient application ranges can be expanded to a great extent,and large quantities of patients can be benefited.