35results about How to "Processing technology is easy to control" patented technology

A nonlinear self-correcting resonant surface acoustic wave temperature sensor includes a substrate, an interdigital transducer, a first metal reflection grid array and a second metal reflection grid array. The surface acoustic wave on the substrate has natural unidirectionality in the direction of phase velocity propagation, and there is a power flow angle PFA between the direction of group velocity propagation and the direction of phase velocity propagation, and |PFA|≤10°; interdigital transducers, first metal reflectors The acoustic aperture direction of the grating array and the second metal reflective grating array is perpendicular to the direction of phase velocity propagation, and the direction of the interdigital transducer bus bar is parallel to the direction of the power flow angle PFA; the resonant surface acoustic wave temperature sensor designed in this way has low frequency and high The present invention utilizes its two characteristic resonant peaks of low frequency and high frequency to realize the non-linear self-correction of the sensor through the self-differentiation method, and maintains the small volume of a single device, while avoiding the existing single resonator When a single resonance peak is used, the demodulation of the frequency signal is affected by the wireless path, which realizes the calibration-free process of the sensor during use.

The invention relates to a preparation method of a wrinkled fabric. The crescent-shaped composite fiber is used as a crepe raw material, and the crescent-shaped composite fiber and cotton fiber are used as a crepe weft raw material, which is interwoven into a plain weave and then subjected to relaxation heat treatment to obtain a wrinkled fabric; The twist direction of the warp and crepe weft is opposite; the preparation process of the crescent-shaped composite fiber is as follows: in the process of preparing circular side-by-side composite fibers from PET and PTT according to the FDY process, the spinneret holes on the spinneret plate are changed from circular to Crescent shape, cooled by circular air blowing, and controlling the arrangement of spinneret holes to meet certain conditions, to obtain crescent-shaped composite fibers; when preparing side-by-side composite fibers, PET melt and PTT melt are distributed from the same spinneret The spinneret m and the spinneret n are extruded; the spinneret m and the spinneret n are crescent-shaped spinneret holes; the contact surface of PET melt and PTT melt flows in the guide holes of each spinneret hole parallel to each other. The invention adopts a simple method to prepare a wrinkled fabric with stable quality and easy processing.

The invention discloses a machining technology of cotton fiber and metal wire blended yarn, and relates to the technical field of blended yarn. The technology includes the following steps of firstly, preparing metal wires; secondly, preparing cotton fiber; thirdly, conducting blending; fourthly, conducting softening, drying and sizing. The technology is simple and controllable, strict high temperature and high pressure conditions are not needed, and the prepared blended yarn has beautiful metal color and luster and is excellent in electromagnetic radiation resisting, static electricity resisting and bacteria resisting performance and is comfortable and breathable; by means of softening, drying and sizing, the color fastness and softness of the cotton fiber are improved, the roughness of textile is reduced, and elasticity and strength are rich.

The invention discloses a refrigerating type infrared focal plane detector back face thinning method. The method comprises the steps that a refrigerating type infrared focal plane detector is roughly machined into the first preset thickness through a diamond cutting machine; and furthermore, the refrigerating type infrared focal plane detector roughly machined to the first preset thickness through the diamond cutting machine is finely machined to the second preset thickness. Back face thinning is carried out on the refrigerating type infrared focal plane detector through diamond cutting, and due to the fact that a smooth diamond point can enable the machined surface to have the minimum residual stress and the ideal roughness and meanwhile clamps are not involved, when devices of different sizes are cut, pressure and other technology parameters do not need to be designed again. Thus, the machining method is simple, the machining technology is controllable, and therefore the problem that in the prior art, the technology for back face thinning of the refrigerating type infrared focal plane detector is low in efficiency is effectively solved.

The invention discloses a bonding resin with high resistance to oxygen and water vapor. The bonding resin comprises the following raw material components and parts by weight: 60-80 parts of polyethylene grafted maleic anhydride, 3 parts of organically modified nano-montmorillonite ~12 parts, polyvinyl alcohol 8~20 parts, polyvinylidene chloride 5~15 parts, polyamide 1~7 parts, composite stabilizer 0.1~4 parts. The bonding resin with high oxygen and water vapor resistance disclosed in the present invention has excellent bonding performance under the condition of ensuring oxygen and water vapor barrier, and the processing technology is easy to control.

The invention relates to a preparation method of an elastic chiffon fabric. The elastic snow is prepared by using low-elastic polyester fiber as the raw material for warp warp, using low-elastic polyester fiber and cotton fiber as the raw material for crepe weft, interwoven into a plain weave, and then performing relaxation heat treatment. Spinning fabrics; the preparation process of all low-elastic polyester fibers is: according to the FDY process, a circular side-by-side composite is prepared from PET (intrinsic viscosity: 0.60-0.65dL / g) and PBT (intrinsic viscosity: 1.00-1.20dL / g). In the process of fiber production, the spinneret holes on the spinneret are trilobal, and the ring blowing is used for cooling, and the arrangement of the trilobal spinneret holes is controlled to meet certain conditions, so as to obtain low-elasticity polyester fibers; The elastic recovery rate of the chiffon fabric is 99.5% to 99.9% in the warp direction, 99.5% to 99.9% in the weft direction, 18.7% to 23.3% in the warp direction, and 24.9% in the weft direction. ~28.1%.

The invention discloses a high-sensitivity surface plasma resonance sensor, which consists of a multi-layer medium layer, a transparent dielectric medium substrate (2) and a metal film layer (5), wherein the multi-layer medium layer is alternatively formed by a low-refractive-index medium thin layer (3) and a high-refractive-index medium thin layer (4), one side of the transparent dielectric medium substrate of the sensor is adjacent to a coupling prism (1), one side of the metal film layer is adjacent to a sample (6) to be tested, the total quantity of the low-refractive-index medium thin layer and the high-refractive-index medium thin layer in the multi-layer medium layer is of an odd number, the thickness of each layer is different from each other, and the low-refractive-index medium thin layer in the multi-layer medium layer is always adjacent to both the transparent dielectric medium substrate and the metal film layer. Compared with the traditional surface plasma resonance sensorbased on the single metal film layer, the sensitivity of the sensor is remarkably improved, at the same time the structure of the multi-layer medium layer is relatively simple, total thickness is smaller, the processing is easy, the cost is reduced, and stronger practical value can be realized.

The present invention relates to a preparation method of a wrinkled fabric. Crescent-shaped composite fibers as wrinkled warp raw materials and crescent-shaped composite fibers and cotton fibers as wrinkled weft raw materials are interwoven into plain weaves, and relaxation heat treatment is performed to prepare the wrinkled fabric; and the twisting directions of the wrinkled warps and the wrinkled wefts are opposite. A preparation process of the crescent-shaped composite fibers comprises the steps of in a process of preparing circular parallel composite fibers from PET and PTT according to anFDY process, changing spinneret orifices in a spinneret plate to be in the crescent shape from the circular shape, performing cooling by cross air blow, and controlling the arrangement of the spinneret orifices to meet a certain condition, thereby preparing the crescent-shaped composite fibers. When the parallel composite fibers are prepared, a PET melt and a PTT melt are distributed and then areextruded from the spinneret orifice m and the spinneret orifice n in the same spinneret plate; the spinneret orifice m and the spinneret orifice n are crescent-shaped spinneret orifices; and the contact surfaces of the PET melt and the PTT melt which flow in guide holes of the corresponding spinneret orifices are parallel to each other. The wrinkled fabric stable in quality and easy to process isprepared by adopting the simple method.

The invention discloses a manufacturing method of three-layered packaging substrates and three-layered packaging substrates. First circuit structures are formed on both surfaces of a bearing plate, wherein the bearing plate comprises a first half-solidifying slice and ultra-thin copper foils orderly laminated on both faces of the first half-solidifying slice; a second half-solidifying slice and a second copper foil are pressed on the first circuit structures at low temperature, and the second copper foil is etched to form a second circuit structure; a third half-solidifying slice and a third copper foil are pressed on the second circuit structure at high temperature; and then a third circuit structure is formed on the third half-solidifying slice after first laser drilling, full-page copper-coating, second laser drilling and removal of electro-coppering layer; both faces of the bearing plate are formed with the three-layered circuit structural substrates, after separating, solder resist structures are formed on the three-layered circuit structural substrates, thus two three-layered packaging substrates are formed. The manufacturing method of the three-layered packaging substrates and the three-layered packaging substrates can thicken the thickness of an initial structure of the three-layered packaging substrates, and are good for improving yield and avoiding substrate wrapping phenomenon.

The present invention relates to a high temperature continuous temperature measurement system and a manufacture method for a temperature measurement tube. The high temperature continuous temperature measurement system comprises a temperature measurement tube, a light receiving probe and a signal analyzer, and the temperature measurement tube consists of an outer layer and an inner layer sintered together. The temperature measurement tube is produced by the following method: a core rod, a small size rubber die and a large size rubber die are prepared; an inner layer material is filled between the core rod and the small size rubber die; the inner layer material is compacted to be formed, and is processed into an inner layer embryo; the small size rubber die is removed, an outer layer material is filled between the inner layer embryo and the large size rubber die, compacted to be formed, and processed into a temperature measurement tube embryo; the temperature measurement tube embryo is positioned in a 200 to 300 DEG C environment for hardening, and then being sintered in a 800 to 1200 DEG C non oxidizing atmosphere, to gain the temperature measurement tube. The present invention ismainly applied to the molten steel temperature measurement field. The present invention has the advantages of advanced processing craft, accurate temperature measurement, short response time, high stability, low cost, and good operation effect.