8 results about "Pore microstructure" patented technology

The invention discloses a porous microstructure foaming white cement radiation refrigeration composite material and a preparation method thereof, and belongs to the technical field of building energy-saving materials.According to the material, sulphoaluminate white cement serves as a base material, a foaming agent is added, and evenly-distributed porous microstructures are formed in the preparation process; by utilizing the synergistic effect of the high reflection characteristic of the sulphoaluminate white cement and the enhanced scattering and heat insulation performance of the porous microstructure, the efficient radiation refrigeration function is realized; the problems that a traditional white cement material is low in radiation refrigeration efficiency and insufficient in heat insulation performance are solved, the preparation process is simple, the cost is controllable, the material can be widely applied to building exterior walls, roofs and other building envelopes, and remarkable energy-saving benefits and market application prospects are achieved.

The invention relates to a preparation method of a hardness-adjustable microstructure antireflection film for a solar cell cover plate, and the method comprises the steps: S1, preparing a coating sol emulsion: mixing a precursor of a film forming material with an alcohol solvent, adjusting the pH value of a reaction system to be acidic or alkaline, and carrying out a first-stage stirring reaction; adjusting the reaction system to be slightly neutral or slightly acidic, adding a thermally-decomposable pore-forming emulsion and an emulsifier, carrying out a second-stage stirring reaction, and aging to obtain a coating sol emulsion; s2, coating and heat treatment: coating the surface of a glass substrate with the coating sol emulsion by adopting a roller coating method, and then carrying out heat treatment on the coated glass substrate; the heat treatment comprises preheating treatment for preliminarily curing the thin film and a tempering process for tempering the glass substrate and completely curing the thin film at the same time; in the tempering process, the pore-forming emulsion is pyrolyzed, and a porous microstructure is formed in the cured film. The hardness of the thin film can be effectively regulated and controlled, and the high anti-reflection effect is achieved through the microstructure.

The invention relates to the field of petroleum and natural gas engineering, in particular to a compact sandstone reservoir oiliness evaluation method based on the pore throat coordination degree in the exploration and development process. The invention discloses a compact sandstone reservoir oiliness evaluation method based on pore throat coordination degree. The method comprises the following steps: acquiring throat-pore microstructure parameters of a target reservoir rock sample; obtaining the critical throat diameter of the target reservoir rock sample, and calculating the fluid passing probability of different throat diameters and the overall fluid passing probability in sequence by combining the pore microstructure parameters of the target reservoir rock sample; the pore oil-bearing indexes of different coordination numbers are solved according to the overall fluid passing probability, then the overall oil-bearing index is calculated, and the oil-bearing capacity of the overall pore area is represented through the overall oil-bearing index. The novel method for evaluating the overall oiliness of different types of throat-pore combinations can be realized.

The present application relates to the field of oil and gas engineering, especially to a kind of tight sandstone reservoir flow channel microheterogeneity quantitative evaluation method in exploration and development process.A kind of tight sandstone reservoir flow channel microheterogeneity quantitative evaluation method, method as follows: obtain the throat-pore microstructure parameters of target reservoir rock sample;According to the relationship between average throat width and the throat width connected by different coordination number pores, an overall average throat diameter calculation formula is established;A linear fitting equation of coordination number and average throat width is established, the linear fitting equation is substituted into the overall average throat diameter calculation formula, and the fitting coefficient of the linear fitting equation is solved;Microheterogeneity coefficient is calculated by fitting coefficient, and non-heterogeneity grade is classified by establishing non-heterogeneity grade classification standard with microheterogeneity coefficient.The present application can be quickly applied to on-site geological feature fine evaluation and sweet spot optimization.

The present application relates to an environmental barrier coating and a preparation method thereof, the coating comprises, from the substrate outward, a hafnium oxide modified silicon primer layer, which forms a high bonding strength with the substrate and improves the high-temperature oxidation and molten salt corrosion resistance by hafnium oxide modification; a lanthanum silicate transition layer, which realizes the gradient transition of the thermal expansion coefficient, relieves the thermal stress between the layers and optimizes the chemical compatibility of the primer layer and the surface layer; and a ytterbium silicate surface layer as the main thermal insulation layer, which is provided with a honeycomb-shaped pore microstructure on the surface and contains large pores with a pore size > 20 microns and micropores with a pore size < 5 microns. The structure promotes the rapid penetration and filling of the CMAS melt through the large pores to shorten the residence time and accelerate crystallization, and the micropores induce local supercooling through capillary action to form a dense barrier layer to block the penetration of the melt, and each layer is complementary in corrosion resistance, thermal shock resistance and CMAS protection, meeting the long-term stability requirements in extreme environments of 1200-1600 DEG C.

The present application provides a kind of aerogel functional coating vacuum insulated panel and its preparation method, the vacuum insulated panel includes coating and panel, coating includes the following raw materials: silica aerogel powder, dispersing agent, cosolvent, thickening agent, adhesive;Adhesive is water-based polyurethane resin.Silica aerogel coating can effectively reduce the transmission of heat due to its structural properties, play the role of reducing energy consumption, because its internal structure is a large number of uniform texture nanometer hole and multi-level fractal pore microstructure, give silica aerogel excellent thermal insulation performance, this structure distribution has good effect in preventing air convection, can reduce heat radiation, heat conduction.Therefore, silica aerogel with excellent thermal insulation performance is used in thermal insulation coating, which can significantly improve the thermal insulation effect of coating film;Meanwhile, the addition of water-based polyurethane resin can also reduce the emission of VOC, so that the vacuum insulated panel meets market requirements.

The invention discloses a vacuum preloading curing combined sludge treatment method, which belongs to the field of sludge treatment process, and comprises the following steps: S1, applying vacuum preloading to a to-be-treated sludge area, controlling the vacuum pressure to be 25-45kPa, continuing for 1-4 hours, and constructing a gradient pore microstructure; under the conditions that the pH value is 5.5-7.5 and the temperature is 15-30 DEG C, the monomers are subjected to hydrophilic and hydrophobic chain segment directional arrangement in a critical tension threshold region, and crosslinking is triggered by a pH sensitive group to form a three-dimensional gel skeleton; through the combined design of vacuum preloading dehydration and crystal induced deposition process, the limitation of weak regulation and control capability of traditional filling type curing on a pore structure is broken through, and ordered reconstruction and densification maintenance of the sludge pore structure can be realized in situ, so that the mechanical property and anti-permeability effect of a consolidated body are remarkably improved.

The invention relates to the field of petroleum and natural gas engineering, in particular to a quantitative evaluation method for microscopic heterogeneity of a flow channel of a tight sandstone reservoir in the exploration and development process. The invention discloses a quantitative evaluation method for microscopic heterogeneity of a flow channel of a tight sandstone reservoir. The method comprises the following steps: acquiring throat-pore microstructure parameters of a target reservoir rock sample; according to the relationship between the average throat width and the throat width connected by pores with different coordination numbers, an overall average throat diameter calculation formula is established; establishing a linear fitting equation of the coordination number and the average throat width, substituting the linear fitting equation into an overall average throat diameter calculation formula, and solving to obtain a fitting coefficient of the linear fitting equation; and calculating a microscopic heterogeneous coefficient through the fitting coefficient, and establishing a heterogeneity grade division standard according to the microscopic heterogeneous coefficient so as to classify heterogeneity grades. The method can be quickly applied to fine evaluation of on-site geologic features and optimization of dessert areas.