31results about How to "Extended repair time" patented technology

The invention discloses an electric cable terminal hoop machining device which comprises an iron base. A sliding groove is formed in the iron base. Sliding blocks are arranged on the sliding groove. A gap is reserved when the two sliding blocks are assembled. The sliding groove is of a hollowing structure. The electric cable terminal hoop machining device is firm, durable, simple in structure and flexible in operation, manufacturing time of a hoop in a terminal can be shortened, manufacturing efficiency can be improved, personal and equipment safety is protected, first-aid repairing time is shortened, and first-aid repairing efficiency is improved.

The invention provides a repairing agent for heavy-metal-polluted soil and a resource recycling method of construction waste. The soil repairing agent comprises 40-60% of a construction waste treatment material, 10-20% of silica sol, 5-10% of humic acid and 10-45% of metallothionein; the construction waste treatment material is prepared through the following steps that the construction waste is broken into powder and then screened by a 1200-mesh molecular screen, a citric acid water solution is added and then stirring is conducted for one hour or more, then calcium polysulfide is added and then stirring is conducted for four hours or more, after a mixed solution is screened by the 1200-mesh molecular screen, still standing is conducted to subside, water is pumped out, sediments are dried, and after grinding, the construction waste treatment material is prepared. According to the repairing agent of the heavy-metal-polluted soil and the resource recycling method of the construction waste, resource recycling of the construction waste is achieved for the first time, and on the one hand, environment pollution can be effectively reduced, and waste treatment cost can be effectively lowered; and on the other hand, preparing cost of the prepared construction waste treatment material is remarkably lowered, the repairing property cannot be lowered, or the repairing time cannot be prolonged.

The invention discloses an insulating operating rod having a pruning function. The insulating operating rod having the pruning function comprises an insulating operating rod; an operating head is connected to the front end of the insulating operating rod; a semilunar hooked knife and a hanging hook component are arranged on the operating head; a downward lateral side of the hooked knife is provided with a knife edge; the hanging hook component is a solid galvanized steel bar; a tail end of the hanging hook component is connected with the operating head in a full welding mode; a middle section of the hanging hook component is perpendicular to the insulating operating rod; the upper surface of the middle section of the hanging hook component is provided with a buffering cushion layer; a head of the hanging hook component bent upward to form into a positioning hook; the insulating operating rod is connected with the operating head through a connecting head; a position on the operating head, which is arranged under the hanging hook component, is provided with a fan. The insulating operating rod having the pruning function has the advantages of allowing branch pruning with electricity, guaranteeing operation and maintenance personnel security, effectively hanging a falling type fuse, avoiding the falling type fuse falling off from the insulating operating rod during operation, reducing damage to personnel on the rod and the ground, shortening the first-aid repair time, avoiding unnecessary work delay and improving the utilization safety.

The invention provides a high-strength self-healing concrete. The raw materials of the concrete are composed in parts by weight: 100-120 parts of Portland cement, 30-50 parts of water, 10-20 parts of carbon dioxide foaming agent, and 20-20 parts of dispersant 30 parts, 55-65 parts of aggregate, 20-30 parts of microbial compound, 20-30 parts of modified fiber compound, 1-3 parts of phenolic antioxidant, 1-3 parts of octadecanoic acid, modified room Pentadiene petroleum resin 4‑8 parts. The high-strength self-healing concrete provided by the invention increases the flexural and compressive strength to a certain extent through the specific proportion and preparation method, and also improves the self-repairing ability of the concrete, prolongs the repairing time of the concrete, and has a more Strong durability and compactness, high recovery rate of concrete strength after repair, it can be seen from the above examples and comparative examples that there is synergy between the components of the high-strength self-healing concrete of the present invention, when any component is replaced , the flexural and compressive strength of concrete decreased significantly, and the recovery rate also decreased significantly.

The invention belongs to the technical field of acellular matrix, and in particular relates to a polysaccharide-modified acellular matrix composite material, its preparation and application. After degreasing, alkali treatment, enzyme treatment and freeze-thawing four-step cell-free treatment, the fresh bladder matrix is ​​compounded with polysaccharides, and the multiple amino groups on the polysaccharides are used to form cross-links with the active groups on the acellular bladder to improve the durability of the material. The three-dimensional fiber network structure is stable, and at the same time, polysaccharides are grafted into the acellular bladder material, thereby endowing the acellular matrix material with excellent biocompatibility. Among them, polysaccharides include chitosan, hyaluronic acid and chondroitin sulfate. The invention adopts four-step cell-free treatment, polysaccharide compounding, non-toxic cross-linking and other methods to prepare a modified cell-free bladder matrix composite material, which can be used to construct regenerative corneal materials, bladder materials, oral cavity repair membranes and other tissue regeneration repair materials.

The invention discloses a polysiloxane elastomer based on an aryl disulfide bond and an imine bond, and a preparation method thereof. According to the invention, the catalyst of 1,3,5-benzenetricarboxaldehyde, polysiloxane and diaminodiphenyl disulfide are directly cross-linked through a condensation reaction of aldehyde groups and amino groups under the action of a catalyst, and then oxygen is removed from a reaction system, so the two dynamic covalent bonds, i.e., the aryl disulfide bond and the imine bond, are simultaneously introduced into the polysiloxane. The preparation method of the invention prepares the polysiloxane elastomer with excellent self-healing performance and high elongation at break; the polysiloxane elastomer heals itself under the condition of low temperature / room temperature, only needs mild conditions and has a fast healing speed and good effect; and the preparation method is simple in process and easy to control, and raw materials used in the method are all commercially produced products that are cheap and easily available.