10 results about "ECTFE" patented technology

A combustion head assembly for a burner that reduces combustion byproduct and oil pooling on a flame ring stabilizer or air diffuser element during normal operational cycling. The polymeric bushing directs away or prevents a non-combusted fuel in the fuel line interior portion from the nozzle end after a combustion cycle, and is fabricated from a polymeric material having thermal / electrical insulating properties, which is resistant to decomposition, dissolution, or breakdown when exposed to No. 2 fuel oil, biodiesel fuel oil, such as fluoropolymers, including PTFE (Teflon), fluorinated ethylene propylene (FEP), perfluoroalkoxy (PFA), ethylene-based fluoropolymers (ETFE / ECTFE), and / or polyvinylidene fluoride (PVDF), polyether ether ketones (PEEK), polyphenylene sulfide (PPS), and / or fluoroelastomers (FKM), or acrylonitrile butadiene styrene (ABS). The polymeric bushing is situated within a fuel line interior portion behind a nozzle element, having a channel or bore extending from end to end and in fluid communication with the nozzle element opening.

The utility model discloses a bearing chamber insulation shrinkage fit device of a new energy machine shell end cover. The bearing chamber insulation shrinkage fit device comprises a first rack, a second rack, a heating machine, a heating coil, a rotary supporting plate, a lifting device, a supporting plate and a rotating piece. The rotary tray is connected to the top face of the first rack, the heating machine is connected to the top face of the rotary tray, the heating coil is connected to the output end of the heating machine, the second rack is arranged below the heating coil, the lifting device is connected to the bottom face of a top plate of the second rack, a telescopic rod of the lifting device vertically penetrates through the top face of the second rack, and the tail end of the telescopic rod is connected with a supporting plate. The rotating piece is connected to the center of the top face of the supporting plate. Compared with the prior art, a product placed on the rotating piece is controlled to ascend and descend through the lifting device, the heating coil heats a bearing chamber of an inner ring of the product, an operator rotates the product to enable the inner ring to be evenly heated and expanded, then the insert with the outer side wall coated with ECTFE insulating paint is installed in the insert, and the inner ring shrinks after being cooled. And an insulating layer is formed between the insert and the product and is in interference fit.

The present invention discloses an ECTFE-based corrosion-resistant nanofiltration membrane, a preparation method and its application, and belongs to the field of membrane separation technology. The present application is based on the preparation of an ECTFE-based nanofiber-based membrane by a polyvinyl alcohol (PVA)-assisted electrospinning method, and the preparation is completed by acid-catalyzed glutaraldehyde (GA) crosslinking and polyethyleneimine (PEI) and trimesoyl chloride (TMC) interfacial polymerization. In this patent, an intertwined corrosion-resistant polymer network is formed by the corrosion-resistant ECTFE polymer, the acid-catalyzed PVA and GA acetal crosslinking network, the aldehyde amine crosslinking network of GA and PEI, the esterification crosslinking of PVA and TMC, and the interfacial polymerization network of PEI and TMC. It shows excellent long-term stability and chemical stability, and can withstand application environments of high temperature, strong acid, strong base and organic solvent. The composite membrane has broad application prospects in treating wastewater in harsh environments.

The utility model discloses a special environment-friendly grading device for high-purity germanium powder, which comprises a frame, a feeding mechanism, a grading mechanism and a dedusting mechanism, the feeding mechanism, the grading mechanism and the dedusting mechanism are mounted on the frame, the feeding mechanism is connected with the grading mechanism through a conveying pipe, and the dedusting mechanism is connected with the grading mechanism through a conveying pipe. The grading mechanism is connected with the dust removal mechanism through a dust removal pipe; pTFE coatings are sprayed on the parts, in contact with germanium powder, of the feeding mechanism, the grading mechanism and the dust removal mechanism. By means of the design of the device, the product purity is guaranteed, it is avoided that germanium powder generates friction in the grading cavity and influences the purity of the germanium powder, and the ECTFE coatings in the grading cavity, the inner wall of the dust remover and the valve plate can improve the abrasion resistance, impact resistance and toughness of the device and reduce noise; and the collection efficiency of the dust remover can be more than 99.99% due to the PTFE film-coated filter material, so that the dust discharge is strictly and effectively controlled, the environmental pollution is completely eradicated, and the purity of the finished product material is greatly improved.

Polymer-ceramic composite articles with relatively low dissipation factor (Df) and relatively high dielectric constant (Dk), as well as polymer-ceramic core-shell powders and pellets adapted for making such composite articles. The ceramic-polymer composites, in powder and / or pellet forms, comprise a plurality of core-shell particles, where: each of the core-shell particles comprises a core and a shell around the core; the core comprises a ceramic that is selected from the group of ceramics consisting of: BaTiO3, SrTiO3, TiO2, CaTiO3, MgTiO3, and combinations of any two or more thereof; and the shell comprises a polymer selected from the group of polymers consisting of: polyetherimide (PEI), polyetherimide (PEI) copolymers, polyphenylene ether (PPE), polyphenylene sulfide (PPS), polyaryl ether ketone (PAEK), polypropylene (PP), polytetrafluoroethylene (PTFE), perfluoroalkoxy alkane (PFA), fluorinated ethylene propylene (FEP), ethylene tetrafluoroethylene (ETFE), polyvinylidene fluoride (PVDF), and ethylene chlorotrifluoroethylene (ECTFE). The core-shell particles can be in a powder form (e.g., a dry powder). In pellet form, shells of adjacent core-shell particles are joined to resist separation of the adjacent core-shell particles and deformation of a respective pellet. Methods of forming a ceramic- polymer composite comprise: superheating a mixture of the polymer (PEI, PEI copolymers, PPE, PPS, PAEK, PP, PTFE, PFA, FEP, ETFE, PVDF, and / or ECTFE), solvent, and the ceramic (BaTiO3, SrTiO3, TiO2, CaTiO3, and / or MgTiO3), to dissolve the polymer in the solvent; agitating the superheated mixture while substantially maintaining the mixture at an elevated temperature and pressure; and cooling the mixture to cause the polymer to precipitate on the particles of the ceramic and thereby form a plurality of the present polymer-ceramic core-shell particles. Methods of molding a part comprise subjecting a powder or pellets of the present polymer-ceramic core-shell particles that substantially fills a mold to a first pressure while the powder is at or above a first temperature above a glass transition temperature (Tg) or if no Tg then above a melting temperature (Tm) of the polymers.

The present invention relates to a spiral wound membrane element for high temperature filtration. The spiral wound membrane module is suitable for use with high temperature water, such as steam injected produced water, which can also have a high pH. The module uses a membrane with a polyphenylene sulfide (PPS) backing material. The feed spacer of the module can be made of polyphenylene sulfide (PPS) or ethylene chlorotrifluoroethylene (ECTFE). The permeate carrier can be made of a woven nylon (i.e., nylon 6,6) fabric coated with a high temperature epoxy resin. The core tube and anti- kink device can be made of a polysulfone. In some examples, the module can be used at temperatures up to 130 °C. Optionally, the module can be used at a pH of 9.5 or higher. In a filtration method, the module can be operated at a pressure in the range of 150-450 psi. The module can be operated at a generally constant pressure.

The invention discloses a method for manufacturing, sleeving and dynamically balancing a surface lining ECTFE impeller, which comprises the following steps of: (1) controlling the thicknesses of blades, a wheel cover and a wheel disc, and unifying the weight, molding datum line, cambered surface length and boundary dimension of symmetrical blades; (2) carrying out stable aging treatment on the blade; (3) the wheel cover is in a natural state when attached to the blades, then the inner side circle of the wheel cover is inspected at different heights, and the impeller is welded through a welding robot; (4) sequentially carrying out annealing treatment, magnetic powder inspection, overall turning, sand blasting treatment and primary dynamic balance on the whole impeller; (5) carrying out ECTFE coating by adopting a hot melting leveling method; (6) the impeller is heated, the main shaft is lifted after an inner hole of the impeller expands, and the impeller is sleeved with the main shaft through the dead weight; and (7) carrying out overall dynamic balance by adopting a method of combining membrane material heat sealing and a dynamic balance block method. According to the method, the ECTFE coating is not damaged on the premise that the assembly precision is guaranteed.

Disclosed are an anti-drip flame-retardant ETFE composite material, a use, and a preparation method. The composite material comprises a resin matrix, silicon dioxide, magnesium hydroxide, modified montmorillonite, and an antioxidant, wherein the resin matrix consists of 100 parts by mass of ETFE, or the resin matrix consists of 85-98 parts by mass of ETFE and 2-15 parts by mass of ECTFE, the sum of ETFE and ECTFE being 100 parts by mass. The composite material provided by the present invention exhibits excellent anti-drip properties and good mechanical properties, and is applicable to the preparation of architectural membranes. The composite material preparation method provided by the present invention is simple, easy to operate, and convenient for industrial production.

The invention discloses high-flexibility fluoroplastic and a preparation method thereof. The raw materials comprise 50 to 80 parts of fluoroplastic, 20 to 50 parts of softening master batch, 0.2 to 1.0 part of a lubricant and 0.1 to 0.5 part of an antioxidant. The softening master batch is prepared from 50-70 parts of THV, 30-50 parts of fluororubber, 1-1.5 parts of a vulcanizing agent and 0.4-0.6 part of an accelerant through a two-step process: firstly plastifying the fluororubber, granulating with a vulcanizing aid at 80-90 DEG C, and then dynamically vulcanizing with THV for 2.5-4 minutes in a double-screw extruder with the length-diameter ratio of 36-40, the temperature of 150-185 DEG C and the rotating speed of 50-150rpm. After the master batch is mixed with auxiliaries such as fluoroplastic, melt extrusion is performed at the temperature of 180-360 DEG C, and the fluoroplastic with the flexibility remarkably improved can be obtained and is suitable for flexible modification and application of high-rigidity fluoroplastic such as PVDF, PCTFE, ETFE and ECTFE.

The invention relates to an applicator device (1) comprising an applicator tip (100) and a container part (200), wherein the container part (200) comprises: (i) a container (210) comprising a container wall (211), a valve (220), and a plunger (230), wherein the container wall (211), the valve (220), and the plunger (230) together define a storage volume (250) for containing a liquid, wherein the plunger (230) comprises a circumferential wall (235), sealingly contacting the container wall (211); and (ii) a plunger advance system (300) functionally coupled to the plunger (230) and configured to advance the plunger (230) for reducing the storage volume (250) for expelling at least part of the liquid via said valve (220) to said tip (100), wherein the plunger advance system (300) is arranged outside the storage volume (250); wherein (a) the valve (220) comprises a first spring system (225) comprising a first spring material (226) comprising a stainless steel material comprising a molybdenum content selected in the range of 0.5-7 wt.%, and (b) the plunger advance system (300) comprises a second spring system (325) comprising a second spring material (326) comprising a stainless steel material comprising a molybdenum content selected in the range of 0.5-7 wt.%, applies; and the plunger advance system (300) comprises a polymer (310) selected from the group consisting of polypropylene (PP), ethylene chlorotrifluoroethylene (ECTFE), and polyoxymethylene (POM); and wherein the plunger advance system (300) comprises a spindle system (350) comprising a ratchet system (353) comprising a first element (355) and a second element (356), wherein the second spring system is configured to provide the first element (355) and the second element (356) to engage on each other.