7results about How to "Fast curing time" patented technology

The invention discloses a flow-state solidified soil backfill light flexible pipe ditch structure and a construction method thereof. The construction method comprises the steps that a pipe bottom foundation layer is arranged at the bottom of a pipe ditch and filled with early-strength type flow-state solidified soil poured gravel; the light flexible pipe is placed on the pipe bottom foundation layer, the number of pouring layers is determined based on pipeline anti-floating treatment, and early-strength type flow state solidified soil is sequentially and gradually backfilled and poured on the outer side of the periphery of the pipe layer by layer according to the preset layered pouring thickness to form a stable layer at least wrapping a part of the light flexible pipe; and a backfill layer which is formed by backfilling and pouring light high-rigidity flow-state solidified soil for one time and covers the pipe ditch is arranged above the stable layer and the light flexible pipe. The flow-state solidified soil is adopted, the early strength of layered backfilling is high, the curing time is short, the construction period can be shortened, continuous backfilling can be guaranteed, the construction time is greatly shortened, the anti-floating backfilling layer number and the pouring thickness are given, clear guidance is provided for construction, and efficient backfilling operation and structural stability are guaranteed.

The utility model provides a printing additionally-installed blowing device, and belongs to the technical field of printing additionally-installed blowing, the printing additionally-installed blowing device comprises a ventilation pipeline, an adjustable structure, an air inlet structure, a heating structure and a filtering structure, the adjustable structure is arranged in the right side wall of the ventilation pipeline, and the air inlet structure is arranged on the right side wall of the ventilation pipeline. The adjustable structure comprises a rotating shaft, a sleeve and a wind shield, the rotating shaft penetrates through the right side wall of the ventilation pipeline and is rotationally connected with the ventilation pipeline, the sleeve is arranged on the outer side of the rotating shaft in a sleeving mode, the sleeve and the rotating shaft are coaxially and fixedly connected, the wind shield is arranged on the outer side wall of the sleeve, and the wind shield is arranged on the outer side wall of the sleeve. The wind shield is fixedly connected with the sleeve; the air inlet structure is arranged in the ventilation pipeline; the problem that in the process that the surface paper is glued by a glue machine, the surface paper is not dry after being glued by the glue machine, so that the surface paper is bubbled after being pressed can be solved.

The utility model provides a kind of glue reduction wall-penetrating terminal for preventing copper bar position deviation, including terminal main body, it is characterized in that, the terminal main body is equipped with multiple glue storage grooves, the glue storage groove is a blind hole structure, the top of the glue storage groove is upper opening, the upper opening is horn shape structure, the end of the glue storage groove is lower passage, the width of the lower passage gradually decreases from top to bottom, the inner wall of the glue storage groove is equipped with the baffle of opposite arrangement, gap for inserting copper bar is equipped between baffle;The baffle is arranged between the upper opening and the lower passage, and the gap height between the upper end of the baffle and the bottom of the upper opening is less than the gap height between the lower end of the baffle and the top of the lower passage.The utility model can occupy the space in glue storage groove by baffle, so as to reduce the amount of glue, reduce glue cost, accelerate glue curing time, also greatly reduce copper bar side deviation influence.

The application discloses a forming method of a special-shaped structure and relates to the technical field of composite heat-proof layer forming. The method comprises the following steps: preparing a bearing body, a heat protection structure, a sleeving tool and auxiliary materials, horizontally installing the bearing body and the heat protection structure on two sides of a sleeving platform respectively and making special-shaped surfaces face downward, forming a glue layer prefabricated body on a vertical surface of the bearing body, preparing sleeving glue after detecting a gap and interference in the sleeving test, preparing the sleeving glue and brushing the glue on bonding surfaces in different regions, pushing the heat protection structure into the bearing body to form an assembly, and obtaining the special-shaped structure after solidification, cleaning of accumulated glue and demolding.

The invention belongs to the technical field of epoxy adhesives, and particularly relates to an epoxy adhesive slow-binding agent with temperature control performance. The epoxy glue slow-binding agent is prepared from the following raw materials in parts by weight: 100 parts of epoxy resin; 60-80 parts of an organic phase change material; 40 to 60 parts of filler; 10-30 parts of a curing agent; 10 parts of a diluent; and 10 parts of carboxyl-terminated liquid nitrile rubber. According to the invention, the carboxyl-terminated liquid nitrile rubber is used as a flexibilizer to enhance the flexibility of the epoxy adhesive slow-adhesion agent, and the moisture latent curing agent and the organic phase change material are used, so that the pot life of the slow-adhesion agent can be prolonged and the curing period can be shortened by utilizing the heat storage and heat release of the phase change material; and the engineering requirements of long working life and short curing period of the retard-bonded prestressed tendon can be met.

The invention relates to a prestressed concrete beam preparation method, which comprises: S1, mixing and stirring cement, fly ash, fine aggregate and coarse aggregate to obtain a dry material; s2, mixing nano silicon dioxide, natural zeolite and water, and performing ultrasonic dispersion to obtain dispersion liquid; mixing and stirring the dry material and the dispersion liquid to obtain a wet material; s3, adding a water reducing agent into the wet material, and stirring to obtain concrete slurry; s4, the concrete slurry is poured into a post-tensioned prestressed concrete beam mold, then primary curing is conducted, a concrete beam blank is obtained, and the curing temperature ranges from 35 DEG C to 55 DEG C; after prestress is applied to the concrete beam blank, a prestressed concrete beam blank is obtained; and S5, the prestressed concrete beam blank is subjected to secondary curing at the curing temperature of 40-65 DEG C, and the prestressed concrete beam is obtained after curing. The problems that in the prior art, a concrete beam deforms and cracks more after being used for a long time, the early strength of the concrete beam is increased slowly, and the cost of the concrete beam is too high are solved.

The invention relates to the technical field of packaging and printing, in particular to low-temperature water-resistant ink for printing a PE shrink film and a preparation method of the low-temperature water-resistant ink. The invention aims to solve the problems of low curing temperature and incompatible water resistance in the printing process of the PE shrink film in the prior art. According to the low-temperature water-resistant ink for printing the PE shrink film, polyurethane resin obtained by reacting a polyurethane prepolymer with a chain extender and an adhesive is used as a matrix; a complex obtained by copolymerizing and chelating the acrylic prepolymer and the chelate is used as another matrix; polymerizing the two matrixes under the action of a dispersing agent, a defoaming agent and a cross-linking agent to obtain a grafted polymer; and shearing, dispersing and preheating to obtain the low-temperature water-resistant ink. The low-temperature water-resistant ink prepared by the invention has excellent low-temperature curing performance and water resistance, and can meet the compatibility when being used for printing a PE shrink film.