144 results about "Engineering plastic" patented technology

This invention discloses a high-transmittance ethylene copolymer and its applications. In this copolymer, the molar content of the second olefin X is 1.8-9.9 mol%, and the second olefin X is an olefin with more than 4 carbon atoms and an odd number of carbon atoms. The molar content of the [EXX] segment is 0.1-5.0 mol% of the total ternary segment content, the molar content of the [EEE] segment is 70-90 mol%, the molar content of the [EXE] segment is 2.0-8.0 mol%, the molar content of the [XEE] segment is 0.5-3.0 mol%, and the molar content of the [XEX] segment is 3.5-10.0 mol%. In this copolymer, when the molar content of the [EXX] segment reaches 0.15 mol%, the transmittance of the copolymer film after hot pressing is not less than 90%, exhibiting extremely high atom economy of the second olefin X. This copolymer can be applied in photovoltaic films, toughening of polyolefin materials, wire and cable, and modification of engineering plastics.

The utility model relates to high polymer material processing equipment technical field, concretely relates to a kind of efficient mixing device of halogen-free engineering plastics carbon black, including double-screw extruder main body and the die head of being installed in the output end of double-screw extruder main body, channel is opened in die head and is communicated with the extrusion cavity of double-screw extruder main body, the top and bottom of die head are all penetrated channel and are equipped with jack, two jacks are jointly inserted with the mounting plate that can slide up and down, several square holes that are equally spaced distribution are penetrated and equipped on the mounting plate, several square holes are all detachably installed with filter screen, several filter screens are all vertical and filled with entire flow channel, by lifting electric cylinder drive mounting plate up and down sliding, different filter screen can be switched in non-stop state, avoid the cumbersome operation of traditional screen change and need to stop die head disassembly, improve production efficiency, multiple square filter screens are vertically arranged, increase filtration area, extend jamming time, suitable for high-filled carbon black formula.

This invention discloses a polyetheretherketone (PEEK) / aramid fiber composite microporous material and its molding method, belonging to the field of engineering plastics processing. The invention first modifies aramid fibers by amylation and prepares carboxylated PEEK. Covalent bonding between the amino and carboxyl groups is achieved through a chemical reaction, resulting in aramid fibers coated with PEEK. These fibers are then mixed with PEEK resin, a melt flow modifier, and additives to obtain a composite material. The composite material is then subjected to biaxial thermo-stretching orientation to improve its transverse / longitudinal orientation and crystallinity. Finally, the composite microporous material is obtained through supercritical CO2 microporous foaming. Because the foaming temperature is lower than the thermo-stretching orientation temperature, the biaxial orientation structure of the composite material is well preserved, and the well-dispersed aramid fibers effectively improve the cell wall strength, inhibit cell growth and merging, significantly increase cell density, and drastically reduce cell size, thereby constructing a high-strength, heat-insulating PEEK composite microporous material.

The utility model belongs to the technical field of installation and protection of outdoor electronic equipment, and relates to a metal transportable vibration reduction box formed by bending and welding sectional materials. The defects that an engineering plastic box material is poor in secondary processability, low in size precision and poor in weather resistance, and a common metal transportable box is large in machining difficulty, long in machining period, high in cost, poor in stacking and carrying performance and the like are overcome. Box covers are respectively arranged on the left and right sides of the box body; the box cover comprises a box cover frame, a cover plate is mounted in the box cover frame, the box cover frame is integrally formed by bending and welding an aluminum alloy section I, four grooves I for bending are formed in the aluminum alloy section I, and a groove is formed in the top surface of the aluminum alloy section I; the box body comprises an open type cover plate, a lower bottom plate is arranged at a lower opening of the open type cover plate, box body frames are arranged at a left opening and a right opening of the open type cover plate respectively, the box body frames are integrally formed by bending and welding aluminum alloy sections II, four grooves II used for bending are formed in the aluminum alloy sections II, and a boss is arranged on the top face of the aluminum alloy sections II.

The utility model belongs to the technical field of automobile parts, more specifically, it relates to a car tail door structure. Including tail door inner plate (1), tail door outer plate (2), tail door inner plate (1) is engineering plastics inner plate, tail door outer plate (2) is engineering plastics outer plate, the inner surface of tail door inner plate (1) is provided with reinforced rib part (3), and the reinforced rib part (3) includes multiple reinforcing ribs (4), the inner surface of tail door outer plate (2) is provided with reinforced rib part (3), and the reinforced rib part (3) includes multiple reinforcing ribs (4), and tail door inner plate (1) and tail door outer plate (2) fixed connection. The car tail door structure of the utility model, simple structure, both realize lightweight design, and have good strength.

The application discloses a PC / ABS alloy and a preparation method and application thereof, and belongs to the technical field of high polymer engineering plastics; the PC / ABS alloy provided by the application comprises the following components in parts by mass: 63-78 parts of PC, 8-22 parts of ABS, 5-13 parts of titanium white, 1-6 parts of bisphenol A-bis(diphenyl phosphate), 0.5-5.5 parts of indium tin oxide, 0.1-1.2 parts of carbon black and 0-8 parts of an auxiliary agent; the average particle size of the titanium white is 140-310 nm; and the average particle size of the carbon black is less than or equal to 22 nm. The product prepared by the application has excellent light-shielding high-reflecting white effect and good appearance, and excellent laser welding performance; thereby, the product can be widely applied to the preparation of paint-sprayed parts of automobile interiors and exteriors. Moreover, the preparation method of the PC / ABS alloy is simple in operation and is beneficial to actual production.

The present invention relates to a monomer having a functional group, a heat-resistant polymer having a rigid main chain using same, and a manufacturing method therefor. Particularly, the present invention relates to a monomer having a pentafluorophenyl group of chemical formula 1, a heat-resistant polymer of chemical formulas 2 and 3 having the monomer of the present invention, and a manufacturing method therefor. According to the present invention, a novel polymer obtained by polymerizing a novel monomer of the present invention has a reactive group of reactive pentafluorophenyl, and thus may exhibit excellent reactivity and enable synthesis of polymers having an excellent polymerization degree by using a polyhydroxyalkylation polymerization method without a protective group. Due to such excellent reactivity, the polymer of the present invention can cause a nucleophilic substitution reaction under mild conditions, and thus an ion-exchange group, such as sulfonic acid or phosphonic acid, can be introduced under mild conditions through such a reaction. In addition, the novel polymer of the present invention has high heat resistance and chemical resistance and good tensile strength, and thus can be used as an engineering plastic. In addition, the novel polymer of the present invention can be imparted with ionic conductivity or other functionalities by introducing a phosphonic acid group or a sulfonic acid group into any one of fluoro positions of pentafluorophenyl of the polymer, and accordingly, may be used as an electrolyte membrane for a fuel cell or water electrolysis. [Chemical formula 1] [Chemical formula 2] [Chemical formula 3]

The utility model belongs to the technical field of pipe roundness correction, disclose a kind of appearance roundness correction equipment for engineering plastic pipe processing, including support platform, the first positioning frame is fixed in support platform left side upper end, first positioning frame both sides install first positioning roller, the transmission roller is installed in the first positioning frame lower end, first positioning frame upper end is provided with positioning frame, and positioning frame lower end is connected second positioning roller, the second positioning frame is fixed in support platform upper end, second positioning frame upper end is fixed heating pipe, and heating pipe inner wall installs heating wire, the third positioning frame is fixed in support platform right side upper end.This appearance roundness correction equipment for engineering plastic pipe processing is positioned to pipe by setting transmission feeding structure, and realizes uniform feeding, and cooperate rotary roundness correction structure, can be after heating to pipe, by multiple groups of rotating roundness correction roller to pipe roundness correction processing, and cooperate cooling structure, realize complete roundness correction procedure, realize continuity operation.

To provide a polyolefin copolymer that is used as a modifier for engineering plastic to yield an engineering plastic composition with low dielectric constants and low dielectric loss tangents.SOLUTION: A polyolefin copolymer has a main chain containing a monomer unit A derived from a C2-8 olefin monomer and a monomer unit B having a glycidyl group. The main chain may also contain a monomer unit C derived from a (meth)acrylic acid ester or vinyl ether. Based on the mass of the olefin copolymer, the proportion of the monomer unit A is 94 mass% or more and the total proportion of the monomer unit B and the monomer unit C is less than 6 mass%.SELECTED DRAWING: None

The application provides a magnetic-conducting slot wedge, a motor and a new energy vehicle. The magnetic-conducting slot wedge is prepared by injection molding of predetermined ingredients, and the predetermined ingredients include a base polymer, insulating magnetic-conducting particles and a reinforcing agent, wherein the base polymer includes engineering plastics and / or epoxy resin, and the insulating magnetic-conducting particles include first magnetic-conducting particles and an insulating layer coated on the surface of the first magnetic-conducting particles. The magnetic-conducting slot wedge has the advantages of simple preparation process and low cost, and the magnetic circuit at the slot opening is good, the leakage inductance changes little, and the insulating property, mechanical property and stability are excellent.

This invention belongs to the field of flame retardant materials technology, specifically relating to a composite flame retardant and its preparation method, as well as flame retardant functional masterbatch. Through multi-level composite and structural design, this invention efficiently synergizes char formation, physical barriers, and catalytic flame retardant mechanisms. The resulting composite flame retardant significantly improves flame retardant and smoke suppression performance while effectively addressing the shortcomings of traditional flame retardants, such as high hygroscopicity, poor compatibility with the matrix, and insufficient char layer strength. It is suitable for high-performance halogen-free flame retardant modification of various polymers, including polyolefins and engineering plastics.

This invention relates to the field of precision electromechanical component manufacturing technology. It provides a precision forming method for a high-speed siphon rotor and the high-speed siphon rotor itself. The method uses a forming mold to stress-free position a metal mandrel at the center of a forming cavity. First, engineering plastic is injected into the mandrel to integrally form an insulating skeleton with an annular groove. Then, a metal conductive ring is formed in the annular groove area through selective electroplating. The method also includes steps such as machining lead holes and precision machining of the outer diameter. This invention also provides a high-speed siphon rotor manufactured by this method. This invention, through an integrated process, eliminates assembly errors and achieves a fully integrated structure of the rotor without adhesives, making it particularly suitable for the manufacturing of miniature, high-density, and highly reliable high-speed siphons.

This invention discloses a method for testing the strength of engineering plastics. It addresses the problem of over-reliance on operator subjective experience and inconsistent judgment standards in determining the ultimate force of engineering plastics. This invention quantifies the difference between bending force and inversion stress, sets a standardized error threshold, and accurately determines whether the two sets of force values ​​exhibit an arithmetic progression. This objectively distinguishes between valid and abnormal detections from a data perspective. For abnormal detections, a retest signal can be directly generated to quickly locate problems such as loose clamping or excessive force loss, reducing invalid detections. For normal test data, a progressive logic of difference range prediction and inversion stress range verification accurately pinpoints the ultimate force of the engineering plastic, clearly distinguishing between the normal buffer deformation stage, the stage of buffer elasticity depletion and synchronous change, and the critical fracture large bending stage.

This invention belongs to the field of thermoplastic polymer materials and discloses a benzotriazole-containing phenoxy resin with ultraviolet shielding function and its preparation method. The compound has the general chemical formula shown below, where m and n are the number of repeating units, m+n=50~360, m≥0, n≥1, R1 is a phenyl, cycloalkyl, or ester group, R2 is a polyphenyl, polycycloalkyl, or naphthyl group, and R3, R4, and R5 are aromatic ether groups containing a benzotriazole structure. R3, R4, and R5 are all linked to the structure via ether groups. This phenoxy resin exhibits excellent ultraviolet shielding, mechanical strength, and thermal stability, making it particularly suitable for applications in engineering plastics, composite materials, adhesives, coatings, and other fields.

This invention discloses a fully insulated pressure plate for rapid activation and deactivation to prevent accidental contact, relating to the field of power switch pressure plates. It includes a protective housing, a fixing module, an operating module, and a contact module. The contact module includes an abutment and a built-in moving contact. The abutment is fixedly connected to the side of the movable operating handle near the base plate and is L-shaped. The built-in moving contact is located inside the working cavity. This invention achieves full insulation protection, significantly improving safety. The base plate, first housing, and second housing of the protective housing are all made of PEEK engineering plastic, possessing excellent insulation performance and mechanical strength. The contact module is completely enclosed inside the working cavity, with no exposed live parts on the outside. The abutment serves as a switching control component rather than a current-carrying component, maintaining a fully insulated state after closing.

The utility model belongs to the technical field of plastics production, disclose a kind of engineering plastics mixing device, including mixing tank, mounting bracket and stirring assembly;Mixing tank is used to store plastic particles;Mounting bracket is used to support and fix mixing tank;Stirring assembly includes driving piece one, main rotary rod, driving gear, propeller blade, vice rotary rod, driven gear and stirring blade, the driving piece one is connected in the bottom of the mixing tank, the main rotary rod is connected in the driving piece one, the driving gear is connected in the main rotary rod, the propeller blade is connected in the main rotary rod, the vice rotary rod is connected in the mixing tank;By making material can be subjected to more comprehensive and violent stirring action in mixing process, to effectively break the material aggregation phenomenon, realize more fine, more uniform mixing effect, reduce the time required for mixing, to improve overall production efficiency.

The utility model discloses a sealing structure and networking type lamp controller thereof for realizing the high protection level and good sealing performance of equipment together. The sealing structure comprises an upper cover, a sealing rubber ring and a lower shell, wherein the upper cover and the lower shell are assembled together, the sealing rubber ring is arranged in the middle, and the upper cover and the lower shell are fixed by a locking device. The material of the upper cover and the lower shell is engineering plastic or metal material, and the surface of the upper cover and the lower shell is treated by waterproof, dustproof and anticorrosion processes.

This invention relates to the field of flame retardant chemical synthesis technology, and discloses ethylene bis(tetrabromophthalimide) and its preparation method and applications. The method includes reacting phthalic anhydride and ethylenediamine in an aqueous medium at a controlled mass ratio of 3.0-5.5:1 to obtain an intermediate; reacting the intermediate with bromine in a fuming sulfuric acid medium, controlling the dropping temperature at 45-60℃ and the holding temperature at 130-150℃; and washing the reaction product followed by high-temperature heat treatment at 150-220℃ to constant weight. This invention effectively inhibits residual active amino groups and organic carbonization by strictly controlling the intermediate synthesis ratio and the temperature range of the bromination reaction. By utilizing high-temperature heat treatment, it thoroughly removes deep-seated acidic volatiles that cannot be removed by conventional drying, solving the problems of yellowing appearance, poor heat resistance, and easy corrosion of processing equipment in existing products. It is applicable to the field of flame-retardant engineering plastics.

The application discloses a nylon composition and a preparation method and application thereof, and belongs to the technical field of polymer engineering plastics; the nylon composition provided by the application comprises the following components in parts by mass: 73-92 parts of PA12 resin, 3-22 parts of a toughening agent, 0.3-1.8 parts of lignosulfonate, and 0.1-1.2 parts of polyvinylpyrrolidone; the toughening agent comprises maleic anhydride grafted SEBS. The product prepared by the application has high light transmittance and excellent bending modulus and impact strength; meanwhile, the preparation method of the nylon composition is simple in operation and is beneficial to actual production.

The application belongs to the field of polymer synthesis, and discloses a nickel complex for synthesizing polyketone resin, a preparation method and application. The method directly prepares high-value-added and excellent-performance polyketone polymer materials by using cheap and easily-obtained ethylene and carbon monoxide as raw materials; the catalyst synthesis method is simple, the price is low, the polymerization reaction temperature is close to the industrial temperature of about 50 DEG C, the polymer post-treatment separation process is simple, and the conversion number of the reaction reaches 10 4 g PK(g of Ni) ‑1 The mild reaction condition reduces the requirements for technical parameters and safety factors of the reaction device; the number average molecular weight of the polyketone resin is between 0.5-7*10 5 g / mol, the molecular weight distribution is in the range of 1.0-2.1, and the molecular weight requirement of the polyketone engineering plastic is met. Under the total pressure of 4.0 MPa of ethylene / CO, the stability lasts for 3 hours, and the method has industrial application prospect.

The application discloses a modified engineering plastic based on PPA and a preparation method thereof in the field of engineering plastics, and comprises the following components in parts by weight: polyamide 66 salt 50-60 parts, polyamide 6T salt 20-30 parts, polyamide 6I salt 12-20 parts, flame-retardant polyurethane prepolymer 5-10 parts, and toughening agent 3-8 parts. The application solves the low-temperature brittleness problem of traditional PPA through the introduction of flexible chain segments and micro-crosslinking regulation, and meanwhile, high strength is maintained; the introduction of phosphine hetero-phenyl groups enables the material to achieve high-grade flame retardation, and additional flame retardant does not need to be added, thereby avoiding the negative influence on the mechanical properties; the synergistic effect of the semi-aromatic structure and the micro-crosslinking network can meet the high-temperature working condition requirement; the step-by-step polymerization controls the molecular weight distribution; the tackifying process adjusts the melt viscosity; the processing such as drawing and pelletizing is facilitated; and the application is suitable for injection molding.

The utility model discloses an engineering plastic ball valve with anticorrosive lining, including valve body and two installation frames, two installation frames are respectively communicated in the both ends of valve body, the outer surface of valve body is connected with fixed frame, the outer surface fixed frame is connected with the valve cover of screw thread, two installation frames are away from the one end of valve body and all be provided with the installation ring. The utility model discloses, through setting valve body, installation frame, fixed frame, installation ring, anticorrosive cover, sealing ring, limit block, positioning block, connecting pipe, fixed ring, positioning rod and fixed cover etc. the cooperation of parts, realized the function that anticorrosive cover was disassembled, improved the installation mode of anticorrosive cover among the prior art, so that when anticorrosive cover is damaged, can disassemble and replace anticorrosive cover, can replace the connecting pipe of valve body both ends simultaneously, so that engineering plastic ball valve can be connected with different specifications pipeline, has promoted the practicality of engineering plastic ball valve.

The utility model belongs to the engine cover structure in the technical field of automobile parts, including engine cover body (1), engine cover body (1) is engineering plastics layer, engine cover plate body (1) outer layer surface sets up high temperature resistant coating (2) and / or ultraviolet protection layer (3), engine cover plate body (1) inner layer surface sets up reinforcing rib portion (4), and reinforcing rib portion (4) includes a plurality of reinforcing ribs (5). The engine cover plate body (1) a plurality of reinforcing ribs (5) form reinforcing rib portion (4) of lattice or honeycomb. The engine cover structure of the utility model, simple structure, both realize lightweight design, and have good mechanics performance and heat resistance.

The application discloses a manufacturing process of a rotor for a rotor type phase change liquid cooling pump, which comprises the following steps: S1, rotor body processing and forming, S2, driving rotor fixed assembly, S3, driving rotor engineering plastic layer injection molding, S4, driven rotor fixed assembly and S5, driven rotor engineering plastic layer injection molding. The application can not only improve the injection molding quality of the engineering plastic layer on the outer surface of the rotor body, but also can realize that one injection molding die can meet the injection molding processing of the engineering plastic layers of the same pair of driving rotor and driven rotor, greatly improves the practicability and reduces the manufacturing cost.

This invention belongs to the field of organic and polymer synthesis technology, specifically relating to a method for synthesizing polynaphthalene-phenanthrene ether polymers. In the field of polymer synthesis methodology, condensation polymerization is a common polymerization method. This method typically uses functional groups to participate in the polymerization reaction. The introduction of functional groups not only increases the cost of monomer synthesis but also leads to storage difficulties due to their reactivity issues, requiring the addition of end-capping reagents at reaction termination. Therefore, developing C-H bond condensation polymerization methods is of great significance. This invention proposes an oxidative polymerization method for naphthalene-phenanthrene ether monomers. This method uses polycyclic aromatic hydrocarbons naphthalene and phenanthrene as C-H bond donors, and selective oxidative coupling polymerization of the naphthalene-phenanthrene backbone structure can be achieved by controlling the oxidant and solvent conditions to obtain polynaphthalene-phenanthrene ether (see abstract figure). The polymer obtained by this method exhibits good thermal stability and a high glass transition temperature, as tested by DSC and TGA, possessing the performance characteristics of high-performance engineering plastics.

This invention belongs to the field of flame retardant technology for polymer materials, specifically relating to a red phosphorus / magnesium phosphate composite flame retardant and its preparation method, as well as a flame retardant functional masterbatch and its preparation method. The composite flame retardant provided by this invention fully leverages the synergistic flame retardant effects of red phosphorus's efficient catalytic char formation and magnesium phosphate's stabilizing smoke suppression and acid neutralization. By melt-blending the composite flame retardant with a polymer matrix, a high-performance flame retardant functional masterbatch can be obtained. The composite flame retardant prepared by this invention effectively overcomes the shortcomings of traditional red phosphorus, such as easy moisture absorption, acid production, processing instability, and poor compatibility with the matrix. It can impart excellent flame retardant properties to polymer materials at relatively low addition levels, while significantly reducing the heat release rate and better maintaining the mechanical properties of the matrix material. It is safe to produce, the process is controllable, and it is suitable for the efficient flame retardant modification of various engineering plastics such as polyolefins, polyamides, and polyesters.

The utility model relates to the technical field of motor train unit coupler rubber buffers, and discloses a shock absorption assembly of a motor train unit coupler rubber buffer, which comprises a shell, the top and the bottom of the shell are respectively connected with an upper mounting plate and a lower mounting plate, and a plurality of rubber blocks are arranged in the shell. The rubber blocks are arranged at equal intervals in the vertical direction, mounting holes are formed in the left ends and the right ends of the upper mounting plate and the lower mounting plate correspondingly, a plurality of honeycomb-shaped engineering plastic partition plates are alternately arranged between the rubber blocks, and connecting columns are inserted into the left ends and the right ends of the upper mounting plate, the shell, the rubber blocks and the honeycomb-shaped engineering plastic partition plates correspondingly. And the lowermost end of the connecting column is in threaded connection with the lower mounting plate. According to the utility model, a plurality of honeycomb-shaped engineering plastic partition plates are arranged, so that a friction interface is increased through the honeycomb-shaped engineering plastic partition plates, extra energy is consumed through interlayer micro-slippage friction, meanwhile, stress distribution is guided to be more uniform, and stress concentration is reduced.

The application belongs to the technical field of engineering plastic processing, and particularly relates to a high-efficiency engineering plastic processing material drying tank, which comprises a cyclone drying mechanism, a secondary drying mechanism and a filtering mechanism. The cyclone drying mechanism comprises a separation drying cylinder, a feeding pipe arranged in the tangential direction of the separation drying cylinder and communicated with one side of the separation drying cylinder, a filter cylinder rotatably installed in the inner cavity of the separation drying cylinder through an impeller driving assembly, and helical blades fixed to the outer peripheral wall of the filter cylinder. The secondary drying mechanism comprises a drying hopper communicated with the bottom end of the separation drying cylinder and having a Y-shaped cross section. The filtering mechanism comprises a separation box communicated with the bottom end of the drying hopper, an arc-shaped circulating pipe connected to the outer side wall of the separation box, and a first tangential port and a second tangential port formed in the inner cavity of the separation box. The application solves the problems of uneven material dispersion, insufficient hot air contact and difficult complete dispersion of clumps in the traditional equipment through the synergistic effect of the components, greatly improves the uniformity and sufficiency of material drying, and ensures smooth subsequent processing procedures.

The application discloses a high-IV PBT resin without solid-phase tackifying, which is prepared by melt polycondensation of terephthalic acid component and 1,4-butanediol component, and is not subjected to solid-phase tackifying (SSP) treatment; the terephthalic acid is regenerated terephthalic acid (r-PTA), and the content of p-toluic acid (p-PTA) is less than or equal to 30 ppm; the content of p-carboxybenzaldehyde (4-CBA) is less than or equal to 10 ppm. By limiting the regenerated r-PTA (p-PTA less than or equal to 30 ppm, 4-CBA less than or equal to 10 ppm) and SSP-free melt polycondensation, the risks of thermal oxidation yellowing and carboxyl end group increase of the SSP process are avoided from the source. The hindering to chain growth is reduced, and the balance between high intrinsic viscosity and low acid value of the resin is ensured without solid-phase tackifying, the product has excellent color and hydrolysis stability, and is widely suitable for optical communication and high-end engineering plastic fields.