24 results about "Vectran" patented technology

The invention relates to the technical field of high polymer material ingredients, and discloses a low-linear expansion coefficient PCR-PP bumper material and a preparation method thereof.The low-linear expansion coefficient PCR-PP bumper material comprises a low-expansion inorganic core, an interface gradient coupling agent and a surface activity modifier, the interface gradient coupling agent forms a brush-like topology grafting layer with the grafting rate of 2.5%-4.5% on the surface of the low-expansion inorganic core, and the surface activity modifier forms a brush-like topology grafting layer with the grafting rate of 2.5%-4.5% on the surface of the low-expansion inorganic core; the surface activity regulator performs steric hindrance locking on the brush-like topological grafting layer through long-chain alkyl of the surface activity regulator. According to the preparation method, a gradient distribution interface layer with specific grafting density and chain segment length is constructed on the periphery of an inorganic core, so that an interface chain segment actively absorbs thermal expansion displacement of a matrix by utilizing conformation transformation; the thermal stress vector discontinuity between the filler and the matrix is eliminated, and an interface mechanical response mode is reconstructed to inhibit interface delamination and microcrack initiation while the overall linear expansion coefficient is inhibited.

The invention discloses a resin-glass fiber coupling flow simulation test method which comprises the following steps: acquiring rheological characteristic parameters of resin and physical characteristic parameters of glass fiber, and measuring interface characteristic parameters; defining a plurality of glass fibers as equivalent fiber bundle flow units, and calculating physical characteristic parameters of the equivalent fiber bundle flow units; constructing a resin flow field model, and performing multi-scale simulation on the movement of the equivalent fiber bundle flow unit; constructing a motion equation of the equivalent fiber bundle flow unit, and outputting a motion velocity vector; and constructing a control equation of the resin flow field, outputting the distribution density of local equivalent fiber bundle flow units at different positions in the coupling flow process of the equivalent fiber bundle flow units and the resin flow field model, and further simulating the distribution density condition of the glass fibers when the glass fibers and the resin are mixed and flow under different conditions. The effect of mixed flowing of glass fibers and resin in different shapes is simulated, and effective guidance is provided for optimization of a composite material forming process.

The present application relates to a kind of alignment methods of the oblique angle of the oblique end face of pigtail, belong to optical fiber detection technical field, comprising the following steps: step 1) using ANSYS software adopts stereoscopic scanning method scanning and gathers the model data of pigtail and rectangular capillary;Step 2) the oblique angle that the end of pigtail needs to be ground is set in advance, the end of pigtail is simulated to be ground, and the deformation of pigtail grinding is analyzed;Step 3) using vector angle method analyzes the oblique angle of the end of pigtail after grinding, detects the oblique angle that the end of pigtail needs to be ground and the oblique angle of the end of pigtail after grinding;Step 4) the oblique angle of the end of pigtail after grinding is processed;The beneficial effects of the present application: by comparing the oblique angle that the end of pigtail needs to be ground and the oblique angle of the end of pigtail after grinding, the deviation between the oblique angle of the oblique end face of the pigtail after correction or detection grinding and the oblique angle of the oblique end face of the pigtail actually needed is reduced.

The invention discloses an everting 5D seamless process for a rear shoe cover, which relates to the technical field of shoemaking processes, and comprises the following steps: providing a specially-made rear shoe cover blank of which the predetermined everting area is a composite material layer with continuously gradually changed modulus from inside to outside; performing three-dimensional partitioning and differential energy input on the eversion region; a global controllable non-contact forming force field is established around the softened blank; the air pressure vector of each action point in the force field is calculated and dynamically regulated in real time; programmed cooling cooperating with the characteristics of the phase-change material is carried out on the formed body, and a shoe rear cover finished product is obtained. According to the method, the composite material with the modulus changing in a gradient mode is adopted, partition differential heating is combined with non-contact type laminar flow air pressure field driving, high-precision and damage-free three-dimensional forming of the eversion area of the rear shoe cover is achieved, and the excellent size stability and shape retentivity of a product are guaranteed; and an advanced manufacturing solution with high flexibility, digitization and extremely high consistency is provided for the shoemaking industry.

A method for separating a glass ribbon comprises moving the ribbon at a ribbon velocity vector in a conveyance direction. The method further comprises exposing a path on the ribbon to a laser beam to heat the ribbon along the path. The method further comprises moving the laser beam at a spot velocity vector in the conveyance direction that is equal to the ribbon velocity vector. The path continues to be exposed to the laser beam while the ribbon moves at the ribbon velocity vector. The method further comprises melting the ribbon along the path while the path is rapidly heated during the exposing and the moving. In response to the melting, a glass sheet is separated from the ribbon along the path and rounded, separated edges are simultaneously formed adjacent the path on the glass sheet and the ribbon.

The invention discloses a single-fiber vector stress-strain sensor based on a process of coating and plating a solid and liquid double-metal layer on the surface of a spandex fiber, which comprises the spandex fiber as a matrix, a lower electrode layer deposited on the surface of the matrix, an upper electrode layer deposited on the lower electrode layer, and the matrix, the lower electrode layer and the lower electrode layer are packaged through a flexible packaging layer; the lower electrode layer is gold nanoparticles attached to the substrate, the upper electrode layer comprises a metal nickel-plated layer on the lower electrode layer and a liquid metal layer coated on the metal nickel-plated layer, and the flexible packaging layer is made of chitosan. According to the invention, the problem of irreversible conductivity degradation caused by repeated stretching of the existing sensor is solved. The invention further discloses a preparation method of the single-fiber vector stress-strain sensor based on the process of coating the surface of the spandex fiber with the solid and liquid double metal layers.

The invention relates to the technical field of electric heating materials, and discloses an electric heating element with wave-transparent performance and a preparation method thereof.Graphene inorganic fiber fabric is adopted as a conductive heating substrate, so that the electric heating element has excellent electric heating performance, the transmission capacity of the electric heating element to electromagnetic waves is remarkably improved, and the dual requirements of invisibility and deicing are met; in the preparation method, a forward transmission coefficient obtained by a vector network analyzer is introduced, and a surface resistance, an electrode size and a power density calculation model are combined, so that the number of partitions and electrode structure parameters are scientifically determined, and the whole machine is ensured to work stably under the conditions of input voltage and target power; a heating path is accurately designed through an equivalent parallel resistance model, so that the heat uniformity and the response speed are improved; and the cross section area of the electrode is determined by combining international electronic design standards to ensure structural safety and thermal stability.

This invention discloses a dark-colored velvet-textured ceramic slab, a base glaze, and its preparation method. The dark-colored velvet-textured base glaze is prepared by ball milling according to the following mass ratio of material: water: carboxymethyl cellulose: sodium tripolyphosphate: 100:36:(0.1-0.2):(0.3-0.5). The material of the velvet-textured base glaze is prepared from the following components in parts by weight: 3-8 parts wollastonite, 5-10 parts dolomite, 10-15 parts strontium carbonate, 2-5 parts calcined talc, 30-40 parts potassium feldspar, 5-10 parts nepheline, 5-10 parts calcined kaolin, 5-15 parts quartz, 1-5 parts white corundum, 3-8 parts calcined zinc oxide, and 10-15 parts matte transparent frit. The matte transparent frit includes the following components in the following mass percentage: SiO2. The composition is 55-60%, Al₂O₃ 12-15%, K₂O 2-3%, Na₂O 3-4%, CaO 20-25%, and the calcination vector of the matte transparent frit is 1%-5%. This solution improves the light transmittance of the glaze layer, enhances the transparency, and maintains a uniform and dispersed surface gloss without crystallization, resulting in a glaze surface with a velvety soft feel.

The invention provides a control method and system of industrial wrinkle removal equipment, and relates to the technical field of wrinkle removal control, and the method comprises the following steps: reading fiber and wrinkle process characteristics of a fabric to be subjected to wrinkle removal, analyzing a molecular chain bond angle variable of the fabric, and determining a wrinkle removal constraint condition meeting a fiber elastic limit; a wrinkle removal area is positioned through image acquisition, and a wrinkle removal area vector is determined; the method comprises the following steps: establishing a dynamic decision model, making a periodic wrinkle removal decision in combination with a constraint condition and a region vector, determining a multi-path wrinkle removal scheme through multi-target optimization iteration, performing timestamp marking, and finally implementing wrinkle removal control through an intelligent central control system. By means of the method and device, the problems that in the prior art, due to the fact that the wrinkle removing area cannot be accurately positioned, the wrinkle removing scheme cannot be dynamically adjusted, the processing efficiency is low, excessive processing or insufficient processing occurs in the wrinkle removing process, and the quality and durability of the fabric are further affected can be solved, highly-automatic and intelligent wrinkle removing control is achieved, and the fabric quality and durability are improved. And the production efficiency and the fabric processing quality are improved.

Manufacturing an elastic material (134) having elastic strands (12) involves first and second joining modules (210, 220) positioned close to each other, wherein at least one module (210) has a surface (210F) rotatable about an axis, the surface having a repeating profile pattern containing a plurality of ridges (210RL), wherein the plurality of ridges contain a platform (210R) and a notch (210N), the notch (210N) being configured to receive and hold at least one elastic strand (12). The platform (210R) and the notch (210N) have a longitudinal axis at an angle of -30° to +30° with respect to the vector of an individual ridge (210RL).

The present application relates to the technical field of high polymer material processing equipment control, and discloses an intelligent control system for PVC shrink film raw material mixing, comprising a data acquisition module, a state solving module, a feedforward control module, a disturbance execution module, a discharge determination module and a main control unit. The collected motor active power and temperature signals are converted into specific mechanical energy and temperature rise rate, a two-dimensional phase plane is constructed, and the tangent slope is calculated to feedforward adjust the servo proportional valve opening degree to match the material rheological state. When the temperature rise rate appears a minimum value, the system actively injects a frequency increment disturbance, and extracts a thermodynamic response characteristic quantity after a set temperature measurement time lag. A two-dimensional response vector is constructed using the characteristic quantity and the input quota threshold. The system determines the real flow state according to the deflection angle of the response vector and outputs a discharge instruction. The present application overcomes the thermal lag error of the temperature sensor, prevents material clumping during the liquid adding process, and improves the accuracy of the discharge end point identification.

A method for preparing composite particles, the method comprising the steps of: (a) providing a plurality of porous particles in a reactor having an outer wall defining an internal volume for containing the plurality of porous particles; (b) agitating the plurality of porous particles using a stirring element located in the internal volume, the stirring element having one or more stirring surfaces, each stirring surface being a region defined by the stirring element at an angle relative to its velocity vector during agitation, and arranged such that movement of the stirring surfaces through the plurality of porous particles causes the plurality of porous particles to be at an angle relative to the velocity vector and / or away from the outer wall along the outer wall, wherein: the outer wall is movable to cause the agitation of the plurality of particles, and the one or more stirring surfaces of the stirring element protrude from an inner surface of the movable outer wall; or the stirring element defines a gap between the stirring element and the inner surface of the outer wall, the gap being less than 10% of the internal dimension of the reactor measured along the direction of the gap; wherein during agitation, the mass of the plurality of porous particles contained in the internal volume depends on the volume of the internal volume and is not more than 500 kg m³. ‑3 And depending on the surface area of ​​the one or more stirring surfaces, it shall not exceed 1000 kg m². ‑2 Furthermore, during stirring, the volume traversed per second by the one or more stirring surfaces depends on the mass of the plurality of porous particles contained in the internal volume, and is between 0.001 and 0.1 m³. 3 s ‑1 kg ‑1 (c) During the stirring of the plurality of porous particles, the plurality of porous particles are brought into contact with a silicon precursor gas under conditions that effectively induce silicon deposition in the pores of the porous particles, thereby providing composite particles comprising a porous particle framework and elemental silicon within the pores of the porous particle framework.

A cylindrical element (1) consists of a fiber-reinforced plastic which exhibits a relationship expressed by formula 2 when a stress-strain relationship equation in an XY plane as in formula 1 is expressed in an orthogonal coordinate system O-XYZ, where an origin O is a center point in the thickness direction of a small element (10) of the cylindrical element (1), the X-axis runs along a tangential direction of a cylinder, the Y-axis runs along the direction parallel to the axial direction of the cylinder, the Z-axis runs along the radial direction of the cylinder, σ is a stress vector, ε is a strain vector, τ is a shear stress, γ is a shear strain, and an element Q ij is an element of the i-th row and j-th column of a plane stiffness matrix Q. { σ x σ y τ xy} ≡ { σ} = [ Q 11 Q 12 Q 16 Q 12 Q 22 Q 26 Q 16 Q 26 Q 66 ] { ε x ε y γ xy} ≡ [ Q ] { ε} Q 12 Q 26 − Q 16 Q 22 ≠ 0

This utility model relates to a combined airflow and scraper cleaning device for vibratory feeders, aiming to solve the problems of difficult cleaning, dead corners, and limited functionality of existing vibratory feeder cleaning devices. The device mainly consists of an air jet unit located at the top of the vibratory feeder and a scraper unit located at the center of the feeder's interior. The air jet unit pre-purges the interior of the vibratory feeder through air nozzles on an annular air pipe to remove loose materials. The scraper unit, driven by a motor, moves the scraper in a circular and upward motion along the spiral feeder guide rail to remove stubborn residue. The air jet nozzles are adjustable-angle vector nozzles, and a venturi tube is installed at the air inlet to improve cleaning efficiency. The scraper rod is telescopic, and its height is adjusted using a gear and rack mechanism. The scraper is made of polytetrafluoroethylene (PTFE) to avoid damaging the guide rail. This device supports the use of airflow and scraper alone or in combination, achieving efficient and thorough cleaning of the vibratory feeder.

The invention discloses a temperature-compensated optical fiber transformer vibration sensor and a measuring method thereof. The temperature-compensated optical fiber transformer vibration sensor comprises a base, an elastic sheet, a rigid rod, a first optical fiber grating and a second optical fiber grating, the elastic sheet is arranged on the base in a suspended mode, the rigid rod is perpendicularly fixed to the center of the elastic sheet and serves as a stress concentration and amplification element, and dispersed stress generated by vibration of the transformer is concentrated to the area where the first fiber bragg grating is located; decoupling of temperature and vibration signals is achieved through the physical position difference of the first fiber bragg grating and the second fiber bragg grating, and temperature compensation is achieved through the double-grating structure layout. According to the invention, a double-grating differential structure is adopted, temperature compensation is realized through the physical layout difference of a strain area and a non-strain area, optical fiber coating processing is not needed, the structure is simplified, the detection precision is improved, and the measurement method realizes multi-dimensional vibration detection and adapts to the actual operation requirements of a transformer through orthogonal arrangement of sensors and vector synthesis.

The invention belongs to the technical field of composite material engineering, and discloses a fiber reinforced composite material performance prediction method and related equipment, and the method comprises the steps: obtaining a space direction vector of each fiber in a to-be-predicted fiber reinforced composite material; calculating a second-order orientation tensor for quantifying orientation distribution of all the fibers based on the space direction vectors of all the fibers; based on the second-order orientation tensor, establishing a representative volume element model of the to-be-predicted fiber reinforced composite material; and performing performance prediction on the fiber reinforced composite material to be predicted according to the representative volume element model. The invention aims to accurately predict the overall mechanical response of the fiber reinforced composite material and shorten the prediction period under the condition of not depending on the preparation and test of a large number of standard and non-standard mechanical parts.

An electrophotographic photoreceptor, a process cartridge, and an image forming apparatus, the electrophotographic photoreceptor including a conductive substrate, a charge generation layer disposed on the conductive substrate, and a charge transport layer disposed on the charge generation layer, the charge transport layer contains a phenolic compound, polyarylate resin, polycarbonate resin and a charge transport material; the vector distance DISHT (J / cm3) 1 / 2 between the HSP value of the charge transport material and the HSP value of the polyarylate resin, which is calculated on the basis of Hansen solubility parameters, and the vector distance DISPC (J / cm3) 1 / 2 between the HSP value of the polycarbonate resin and the HSP value of the polyarylate resin, which is calculated on the basis of Hansen solubility parameters, respectively satisfy the following formulae (1) and (2). Formula (1): DISHT < = 3.9 Formula (2): 9.2 < = DISPC < 12.0

In an orthogonal coordinate system O-XYZ in which the center position in the thickness direction of the minute elements (10) of the cylindrical member (1) is defined as an origin O, the tangential direction of the cylinder is defined as the X axis, the direction parallel to the axial direction of the cylinder is defined as the Y axis, and the radial direction of the cylinder is defined as the Z axis, the stress vector is set as sigma, the strain vector is set as epsilon, and the shear stress is set as tau. The cylindrical member (1) is formed from a fiber-reinforced plastic that satisfies the relationship represented by formula (2), where [gamma] is the shear strain, and Qij is the i-row j-column component of the in-plane rigid matrix (Q), and the stress-strain relational expression in the XY plane is represented by formula (1): [Mathematical formula (1)] [Mathematical formula (2)] [Mathematical formula (1)] [Mathematical formula (2)] [Mathematical formula (2)] [Mathematical formula (2)].

A system for evaluating a distribution of fiber bundles in a fiber reinforced material by three-dimensional vector data of the fiber bundles is provided with: a calculator configured to divide the fiber reinforced material into a plurality of three-dimensional cells, selecting data respectively belonging to the cells, and averaging the selected data to calculate reference vector data; and a display configured to display the reference vector data two-dimensionally or three-dimensionally.

The invention provides an optimization method for a laser processing technology of a crease-resistant jean fabric, and relates to the technical field of textile after-finishing. The method comprises the following steps: constructing a heat tolerance data model based on fabric physical attributes, and extracting limit energy density corresponding to degradation of a functional layer; then performing partition energy mapping on the pattern by using the density, and determining a heat accumulation inhibition factor; then generating a discretized pulse sequence by combining with a local thermal relaxation time window, and planning an optimized vector scanning path; finally, spectral reflection data are collected in real time in the etching process, and negative feedback power adjustment is carried out based on a thermal damage deviation signal. The thermal damage physical boundary is precisely defined through anisotropic modeling, space-time modulation and spectrum closed-loop control, continuous accumulation of heat is effectively blocked, the problems of yellowing, strength reduction and function failure of the crease-resistant denim fabric caused by thermal overload of resin are solved, and high-fidelity and lossless refined laser processing is achieved.

The utility model discloses a kind of tensile resistance signal attenuation prevention miniature coaxial cable, belong to cable technical field, including, conductor, insulating layer, inner shielding layer, outer shielding layer, sheath layer, conductor outside is sequentially provided with insulating layer, inner shielding layer, outer shielding layer, sheath layer, conductor includes multiple silver-plated copper core, by the way of stranding is made, insulating layer includes acrylate base dielectric elastomer, reinforcing layer includes Vectran fiber, outer shielding layer is woven from multiple silver-plated copper wire. Through the utility model, reinforcing layer is provided between inner shielding layer and outer shielding layer, reinforcing layer is alternately wound by 30 ° / 60 ° through rigid cladding, realize ≥30% stretch while keeping shielding layer undeformed. Insulating layer uses acrylate base dielectric elastomer, easy to crack or dielectric parameter dramatic change when stretching, bending, high-elasticity buffer stretch and bending stress;Dielectric constant and size stability, keep impedance continuous.

An electrophotographic photoreceptor includes a conductive substrate, a charge generation layer disposed on the conductive substrate, and a charge transport layer disposed on the charge generation layer, in which the charge transport layer contains a phenolic compound, a polyarylate resin, a polycarbonate resin, and a charge transport material, and each of a vector distance DISHT (J / cm3)1 / 2 between an HSP value of the charge transport material and an HSP value of the polyarylate resin, and a vector distance DISPC (J / cm3)1 / 2 between the HSP value of the polycarbonate resin and the HSP value of the polyarylate resin, which are calculated based on a Hansen solubility parameter, satisfies Expression (1) and Expression (2),D⁢I⁢SH⁢T≤3.9,Expression⁢ (1)9.2≤D⁢I⁢SP⁢C<1⁢2.0.Expression⁢ (2)

The invention relates to a method for planning a locally selective irradiation of a working area (11) with a plurality of energy beams (7) in order to produce at least one component (13) layer by layer from a plurality of powder material layers (21) of a powder material (2) arranged successively in a layer sequence in the working area (11) by means of the energy beams (7), wherein - in at least one planning powder material layer (21') of the plurality of powder material layers (21) a plurality of component cross-sections (19) of at least one component (13) to be manufactured is determined or provided, wherein - the component cross-sections (19) are assigned to the energy beams (7) of the majority of energy beams (7) under optimization of at least one optimization goal, wherein - that at least one optimization goal is selected from a group consisting of a uniform cross-sectional distribution of the component cross-sections (19) onto the energy beams (7), a uniform area distribution of a total area to be irradiated in the planning powder material layer (21') onto the energy beams (7), a uniform volume distribution of a total powder volume to be solidified in the planning powder material layer (21') onto the energy beams (7), a uniform temporal distribution of an activity time onto the energy beams (7), a uniform vector length distribution of irradiation vectors onto the energy beams (7), and a combination of at least two of the aforementioned optimization goals.