77results about How to "Good surface shape" patented technology

The invention discloses a method for preparing a lignin urea-formaldehyde pesticide microcapsule. According to the invention, the method comprises the following steps: taking modified lignin, formaldehyde and urea as a monomer, forming a water-soluble performed polymer under base catalysis, diluting and forming continuous phase, forming dispersed phase by pesticide, an organic solvent and a surfactant, mixing and stirring the continuous phase and the dispersed phase to form an oil-in-water emulsion, performing in situ condensation polymerization under the acidic condition, heating and solidifying, pumping filtration and washing, drying to obtain the solid microcapsule particles. The modified lignin is obtained by formaldehyde hydroxymethyl modification of the industrial grade wheat straw soda lignin. According to the invention, the waste wheat straw soda lignin in paper industry is taken as the main wall material, so that the production cost of the microcapsule can be effectively reduced and the resource utilization of waste biomass can be realized. The preparation method of the invention has the advantages of simple process, rapidity and controllable microcapsule particle size, and is capable of realizing the industrial production, increasing the pesticide utilization rate, prolonging the persistent period, minimizing the environmental pollution in the process of agriculturalproduction, reducing the agriculture production cost and the like, and has good market prospect.

Provided that a pair of strip-like regions extend from 2 mm to 10 mm inside each of a pair of opposing sides along an outer periphery of a top surface of a substrate on which a mask pattern is to be formed, with a 2 mm edge portion excluded at each end in a lengthwise direction thereof, the height from a least squares plane for the strip-like regions on the substrate top surface to the strip-like regions is measured at intervals of 0.05-0.35 mm in horizontal and vertical directions, and a substrate in which the difference between the maximum and minimum values for the height among all the measurement points is μoτμoρετηαν 0.5 μm is selected.

A MEMS device includes a mirror substrate (200), an electrode substrate (301) arranged so as to face the mirror substrate (200), a mirror (230) serving as a movable member rotatably supported in an opening portion of the mirror substrate (200) via support members, a driving electrode (101) arranged on an insulating film (104) on a surface of the electrode substrate (301) facing the mirror substrate (200) so as to face the mirror (230) across a gap and drive the mirror (230), and a lower electrode (103) made of a metal or a semiconductor and formed under the insulating film (104) exposed to the gap so as to be in contact with the insulating film (104).

A photographing optical lens assembly includes seven lens elements, which are, in order from an object side to an image side along an optical path: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. The first lens element has negative refractive power. The third lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fifth lens element has an object-side surface being concave in a paraxial region thereof. The sixth lens element has an object-side surface being convex in a paraxial region thereof. The seventh lens element has an image-side surface being concave in a paraxial region thereof and having at least one convex critical point in an off-axis region thereof.

The invention provides a surface adjusting agent containing manganese phosphate. The surface adjusting agent containing the manganese phosphate comprises the following components of, by weight, 0.4-5parts of the manganese phosphate, 80-100 parts of a solvent, 2-10 parts of a dispersing agent, 0.5-3 parts of a neutralizer and 0.5-2 parts of a thickening agent; and the average particle size of themanganese phosphate in the surface adjusting agent containing the manganese phosphate is 2 microns or below, D90 is 1.5 microns or below, and the PH value is 3-9. According to the surface adjusting agent containing the manganese phosphate, the stability is excellent, brushing is not needed after chemical conversion treatment of the iron and steel wear-resistant manganese phosphate, and the excellent treatability is realized.

An imaging optical lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element has negative refractive power. The second lens element has negative refractive power. The third lens element has negative refractive power. The imaging optical lens assembly has a total of six lens elements.

The invention aims to prepare a distributed feedback Bragg grating suitable for a high-power 808nm semiconductor laser by using holographic lithography and wet etching process, and relates to the technical field of semiconductor device manufacture. The invention is characterized by comprising the steps of carrying out one-time epitaxial growth on a GaAs substrate by using metal organic chemical vapor deposition (MOCVD) technology; exposing the prepared epitaxial wafer by using a holographic exposure system with an exposure source being a 325nmHe-Cd laser; carrying out developing and hardening; and finally, etching an InGaP grating layer by using an etching solution with a volume ratio of HCl:C2H6O2=3:2 and obtaining a grating. The beneficial effects of the invention are that a second-order grating with better morphology is prepared on the InGaP grating layer and the duty cycle, groove depth and other parameters enables the laser to have narrow linewidth and small wavelength shift. Meanwhile, the process can be used for high-power compound semiconductor laser of other wavelength and has a wide range of application.

A dope composition containing an acrylic resin having a weight average molecular weight of greater than or equal to 250,000; and an additive having a weight average molecular weight of less than 50,000, in which the acrylic resin includes a methyl methacrylate unit (a), and a mass fraction of an alkyl (meth)acrylate unit (b) other than methyl methacrylate is less than 5 mass %, has excellent manufacturing aptitude from the viewpoint of having a high drying speed and large breaking elongation at a time point of forming an un-stretched film, and enabling a crack at the time of being stretched to be suppressed, has a low haze value and an excellent surface shape at the time of preparing a polarizing plate protective film, and has excellent heat resistance; a polarizing plate protective film; a polarizing plate protective film manufacturing method; a polarizing plate; and a liquid crystal display device.

The invention relates to the field of bridge construction, and particularly relates to a side arch rib construction method and a side arch rib. The side arch rib construction method comprises the following steps that a foundation of the side arch rib is pretreated, and prepressing inspection is conducted on the foundation; a mounting bracket of the side arch rib is erected on the foundation, and apreset arc-shaped surface is formed at the top end of the mounting bracket during erection; a side arch rib formwork is mounted on the mounting bracket, and concrete is poured in a layered mode to form the arch rib; and a formwork of a mounting end cross beam at the upper end of the arch rib is extended, and concrete is poured in a layered mode to connect the arch ribs on the two sides of a bridge in the transverse direction. According to the side arch rib construction method and the side arch rib, the preset arc-shaped surface is formed at the top end of the mounting bracket, so that the erected mounting bracket can be matched with the bending shape of the arch rib, thus effective supporting of bracket stand columns to the side arch rib is ensured, and the compactness and strength of theconcrete are ensured through the layered pouring mode.