177 results about "Polyphthalamide" patented technology

An IOL injector, comprising an injector body; and a plunger. The plunger comprises a shaft comprising a moldable material having a flexural modulus greater than 600 thousand psi, and a plunger tip. The moldable material may have a flexural modulus greater than 750 thousand psi or greater than 1 million psi. The plunger shaft may comprise, for example, Polybutylene Terephthalate (PBT), Polyphthalamide (PPA) or liquid crystal polymer (LCP).

The invention discloses a high temperature nylon PPA reinforcing material and a preparation method thereof. The high temperature nylon PPA reinforcing material comprises the following components in part by weight: 30 to 50 parts of polyphthalamide, 8 to 20 parts of polyamide, 10 to 15 parts of main fire retardant, 3 to 5 parts of assistant fire retardant, 30 to 45 parts of filling reinforcing agent, 0.2 to 0.6 part of antioxidant, 0.2 to 0.8 part of lubricant, and 0.3 to 0.6 part of nucleating agent. The invention overcomes the defects of lower liquidity and difficult processing of the PPA because a polyamide material is introduced; the polyamide material has the characteristics of high liquidity and similar molecular structure, and can be well fused with the PPA material, so that the liquidity is improved, the processing temperature is greatly reduced, and the processing procedure is simplified; and a modified material with excellent performance after being reinforced by a glass fiber is equal to foreign brand materials, and plays a role in laying the foundation for domestic volume production and future quantity demand in the domestic market.

The invention provides a water resistible and breathable plastic film with a drying function. The plastic film is prepared from the following raw materials in parts by weight: 40-80 parts of macromolecule plastic, 20-60 parts of an adsorbent and 1-5 parts of an auxiliary material, wherein the macromolecule plastic is at least one of polyethylene, polypropylene, thermoplastic elastomer and the like; the adsorbent is selected at least one of silica gel, montmorillonite, bentonite, molecular sieve, calcium carbonate, titanium dioxide and the like; the auxiliary material is selected from at least one of macromolecule wax, modified polyphthalamide, calcium stearate and the like. The plastic film adopts a plastic film (bidirectional or unidirectional) tension technique, and the adsorbent with the drying function is added into the raw material formula for manufacturing a water resistible and breathable film, so that a material has a certain moisture absorption function under the condition that the air permeability of the material is not affected.

A fluid pulse damper having increased dynamic range and sensitivity, being especially useful in suppressing pulsations in the fuel supply rail of an internal combustion engine. The damper is a longitudinal gas-filled plastic pillow having walls formed by opposed flexible short sides and opposed flexible long sides, and includes at least one internal self-contact element, and preferably a plurality of such elements. As the short sides flex, the elements make contact internally, shifting the damper into a different compression regime and extending the pressure/response over an increased range of pressures. A feature of some embodiments is that the inner surface within the contact elements is shifted into tension after the elements make contact, thereby stiffening the damper and increasing the damper's resistance to further deformation. The damper is formed of a plastic such as ultra-high molecular weight polyethylenes, high flow polyetherimides, or tubing grade polyphthalamides.

A cup-like structure for engaging a cervix of a patient includes a rim, and includes a base defining an aperture through which one or more tubular members of a uterine manipulator may extend into the uterus. The cup-like structure is made from one or more of a polyphthalamide (PPA) material and a polyetheretherketone (PEEK) material. A uterine manipulator including a cup-like structure is also disclosed.

A pipe having: a layer of fluoropolymer; an intermediate layer of ethylene and vinyl alcohol copolymer; and an outer layer of polyphthalamide. An electricity production assembly is provided using a fuel cell and including such a pipe.

Disclosed herein is a flame resistant composition comprising a compatibilized blend of a polyphthalamide and a poly(arylene ether); and a phosphinate, wherein the composition is substantially free of linear aliphatic polyamides.

Multi-layered fuel feed pipe, wherein the feed pipe comprises at least five layers with the following layer structure from the inside to the outside: an innermost layer consisting of at least one polymer from the group “polyamide, fluoropolymer, polyphenylene sulfide, polybutylene naphthalate”, a first support layer consisting of polyamide, a barrier layer, a second support layer consisting of polyamide, an outer layer consisting of at least one polymer from the group “polyamide, polyphenylene sulfide, polyphthalamide”.

The invention discloses an organic boron silicon adhesion promoter with a high refractive index as well as a preparation method and an application of the organic boron silicon adhesion promoter. The preparation method comprises steps as follows: diphenylsilanediol, epoxy silane, ester silane, borate and a solvent are uniformly stirred at the room temperature, a titanate catalyst is added, a mixture reacts for 4-14 h at the reaction temperature controlled in a range from 25 DEG C to 60 DEG C and continuously reacts for 2-6 h at the vacuum degree controlled in a range from 0.05 MPa to 0.098 MPa and at the temperature controlled in a range from 60 DEG C to 140 DEG C, and the organic boron silicon adhesion promoter with the high refractive index is prepared. The prepared adhesion promoter can not only remarkably improve the adhesion performance of high-refractive-index addition type silica gel for LED packaging, but also has the high refractive index and good compatibility with the silica gel, particularly has a remarkable function for improvement of the adhesion performance of plastic base materials such as polyphthalamide, polyethylene terephthalate, 1,4-cyclohexanedimethanol terephthalate, polycarbonate and the like and can be expected to be widely applied to the field of LED device packaging.

A multilayer tube comprising at least an inner layer, an intermediate layer, and an outer layer, wherein the intermediate layer is formed by a polyphthalamide.

A pipe for transporting fluid in motor vehicles, such as fuel or oil under high tempature and pressure, comprises one layer constituted for the most part of polyphthalamide (PPA) and one layer constituted for the most part of fluoropoloymer. The pipe has a thickness formed mainly by the thickness of the polyphthalamide layer, the thickness of the polyphthalamide layer being five to ten times greater than the thickness of the fluoropolymer layer. The polyphthalamide layer can be directly in contact with the fluoropolymer and a bonding layer of polyamide can also be present between these two main layers.

The invention discloses an organosilicon bonding promoter for LED packaging high-refractive-index addition-type silica gel and a preparation method and application of the organosilicon bonding promoter.According to the preparation method, an organosilicon compound containing hydroxyl and phenyl, epoxy silane, ester silane and a solvent are stirred to be uniform at room temperature, a titanate catalyst is added, a reaction is performed at the temperature of 25-60 DEG C for 6-15 h and continued at the vacuum degree of 0.05-0.098 MPa and the temperature of 60-140 DEG C for 2-6 h, and then the high-refractive-index organosilicon bonding promoter containing epoxy and ester is prepared.The prepared bonding promoter is high in refractive index, compatibility with the LED packaging high-refractive-index addition-type silica gel is good, the bonding performance, particularly with polyphthalamide, poly-1,4-cyclohexylene dimethylene terephthalate and polycarbonate, of the silica gel can be remarkably improved, and the promoter can be widely applied to the field of LED device packaging.

The invention discloses preparation and application of a high-wear-resistance modified nylon composition. The high-wear-resistance modified nylon composition comprises the following components in percentage by weight: 30-70 parts of PA66 (Polyamide) resin, 20-50 parts of PPA (Polyphthalamide) resin, 4-8 parts of toughening agent, 4-7 parts of wear-resisting agent and 2-5 parts of other auxiliary agents. The material has wide application in the fields of automobiles, machinery and the like and has an obvious advantage of substituting metal in the aspects of a wear-resistant shaft bushing, a slip sheet and the like. A preparation method for the high-wear-resistance modified nylon composition comprises the following process steps of: uniformly mixing the raw materials according to a proportion; adding into a double-screw extruder; and controlling the temperature at 250-330 DEG C for granulation to obtain the high-wear-resistance modified nylon composition. The high-wear-resistance modified nylon composition with superior comprehensive performance is prepared.

The invention relates to a polyphthalamide composite material and a preparation method thereof. The polyphthalamide composite material comprises the following raw materials in part by weight: 27.4 to 88.85 parts of polyphthalamide, 1 to 20 parts of thermotropic liquid crystalline polymer, 10 to 50 parts of glass fiber, 0.05 to 0.6 part of antioxidant and 0 to 2 parts of lubricant. The method comprises the following steps of: S1, weighing the polyphthalamide, the thermotropic liquid crystalline polymer, the antioxidant and the lubricant in proportion and mixing the raw materials for a period of time; and S2, adding the mixed raw materials into a double-screw extruder, adding the glass fiber into the mixture in proportion in a laterally feeding mode, fusing, extruding and pelletizing the mixture. The polyphthalamide composite material and the preparation method have the advantages of effectively reducing melt viscosity during processing, increasing melt flow rate, further improving material processing performance, lowering the fracture rate of the glass fiber and improving the mechanical property and thermal property of the composite material.

The invention discloses a flame retardant reinforced polyphthalamide composite material and a preparation method thereof. The flame retardant reinforced polyphthalamide composite material comprises the following raw materials in parts by weight: 22.1-55.8 parts of polyphthalamide, 1-18 parts of thermotriopic liquid crystalline polymer, 20-45 parts of glass fibers, 14-18 parts of flame retardant, 0.1-0.6 part of antioxidant and 0.3-1 part of lubricant. By introducing TLCP (Thermotriopic Liquid Crystalline Polymer) into a glass fiber reinforced flame retardant PPA (Phenlypropanolamine) system, the flame retardant reinforced polyphthalamide composite material can lower the viscosity of a blend melt, improve the fluidity of the composite materials, enhance the stability of the flame retardant system, the comprehensive properties of the materials and the moulding processing performance of the flame retardant system, save the moulding processing energy consumption, lower the product cost and has wider application prospect in the electronic and electrical field, the mechanical engineering field and the like.

A heat curable, circular knitted fabric includes reinforcing and meltable resin fibers that can be cured to form a more rigid material form. In one embodiment, the fabric includes a core spun yarn, wherein the core may be made from glass, carbon, basalt, aramid or metal. The wrap surrounding the core may include resin type fibers such as Poly(p-phenylene sulfide) PPS, Polyetherimide (PEI), Polyether ether ketone (PEEK), Polysulfone (PES), Polyphthalamide (PPA), nylon, polyester, or polypropylene.

The invention belongs to the field of organic silicon rubber additives and particularly relates to a high-refraction-index boron-containing organic silicon tackifier and a preparation method thereof.The tackifier is high in silicon rubber compatibility, catalyst poisoning is avoided, boron atoms can be attracted by electron cloud on phenyl in PPA (polyphthalamide) serving as an adhered base material, and adhesion between silicon rubber and PPA is improved. A preparation process is simple, high repeatability and controllability are realized, an adopted catalyst can be easily removed through reduced-pressure suction filtration, reaction conditions are mild, consumption of organic solvents in a reaction process is avoided, and industrialization can be easily realized. By changing of reactionconditions and a reactant ratio, viscosity of the organic silicon tackifier is reduced to 56.8-73.6mPa s while the refraction index is up to 1.5078-1.5203, and the organic silicon tackifier is suitable for high-refraction-index addition type organic silicon rubber.

The invention discloses a laser formed polyphthalamide composition and a preparation method thereof. The laser formed polyphthalamide composition comprises the following raw materials in parts by weight: 30-75 parts by polyphthalamide, 3-15 parts of inorganic pigment, 0.3 part of nucleating agent, 20-40 parts of glass fiber, 0.5 part of lubricating agent, 0.2 part of hindered phenol antioxidant and 0.2 part of phosphite ester antioxidant. The laser formed polyphthalamide composition provided by the invention can be used in a laser direct forming technology, has high resistance and excellent mechanical property, is applicable to a reflow soldering process, is environmental-friendly and nontoxic, is low in cost, and is simple in machining process.

The invention belongs to the technical field of macromolecular materials, and particularly, discloses a composite material of PPA and PPS and a preparation method thereof. The PPA and the PPS, which are used as main raw materials, are modified under a melting state in combination with a filling enhancer, a lubricating agent, an antioxidant and a coupling agent. The filling enhancer is added to improve the mechanical and thermal properties of the composite material, the lubricating agent is added to improve the processability of the composite material, the antioxidant is added to improve the stability of the PPA during processing, and the coupling agent is added to reinforce the bonding between the filling enhancer and matrix resin.

The invention discloses a polyphthalamide reinforced material and a preparation method thereof. The polyphthalamide reinforced material comprises the following formula components in percentage by mass: 48 to 58 percent of polyphthalamide, 6 to 15 percent of modified red phosphorus, 35 to 45 percent of filler intensifier and 1 to 2 percent of additive. The polyphthalamide reinforced material disclosed by the invention tales polyphthalamide as a basic component, and as the polyphthalamide acts with the modified red phosphorus, the filler intensifier, the additive and other components in an extrusion process, the polyphthalamide reinforced material has high flame-retarding performance and mechanical properties such as tensile strength and impact strength. Meanwhile, the production cost of the polyphthalamide reinforced material is low. The preparation method of the polyphthalamide reinforced material comprises: mixing the components according to a formula; and performing segmental feeding and extrusion. The preparation method adopts a simple process, and is low in cost and suitable for industrial production.

The invention relates to a high-temperature-resistant nylon composite material and a preparation method thereof. The high-temperature-resistant nylon composite material comprises, by weight percentage, 40-70% of polyphthalamide (PPA), 1-10% of polyamide 66 (PA66), 20-50% of glass fibers, 3-10% of toughening agents, 0.1-0.5% of coupling agents, 0.2-1.0% of antioxygen, and 0.5-2.5% of the balance. The preparation method comprises the PPA, the PA66 and other raw materials are put into a mixer to be mixed for 10-20 minutes, pre-mixed materials are extruded through an extruder, stretched into strips, water-cooled through a water tank, blow-dried, and dragged to a stock cutter to finish grain cutting, and then the high-temperature-resistant nylon composite material is obtained. The heat deflection temperature of the high-temperature-resistant nylon composite material can achieve more than 290 DEG C, and the high-temperature-resistant nylon composite material has better heat resistance than common high-temperature-resistant nylon achieving 280 DEG C. In addition, impact resistance is good, impact strength can achieve 15kJ/m<2>, and the high-temperature-resistant nylon composite material is simple in manufacturing process and low in cost, and has good application prospects.

The invention is concerned with alloy with fibre made of poly(hexamethylene adipamide) and phthalamide phthalic diamide. It relates to 36.15 to 46.15 percent of poly (hexamethylene adipamide), 20 to 30 percent of phthalamide phthalic diamide (PPA), 30 to 33 percent of long fiberglas, 0.1 to 0.2 percent of lubricant and 0.1 to 0.3 percent of antioxidant in weight proportion. This also shows the preparation method of the said alloy. This product and method can improve the surface quality and control the cost of material and product, and it is fit for the high demand of heat resisting, such as engine accessory, dynamoelectric tool shell, inside and outside parts of electrical apparatus with and details of cars.

The invention discloses high-molecular plastic particles for a cable and a preparation method for the high-molecular plastic particles. The plastic particles comprise the following components in parts by weight: 25-35 parts of low density polyethylene, 6-13 parts of silane crosslinked polyethylene, 12-20 parts of chloroprene rubber, 4-7 parts of polyphthalamide, 3-9 parts of polyhydroxybenzoate, 1.5-4.5 parts of alpha-n-butyl cyanoacrylate, 2.5-5.5 parts of dibutyltin dilaurate, 2-5 parts of tributyl borate and 2-5 parts of dioctyl phthalate. The preparation method comprises the following steps of: (1) uniformly mixing the materials in a high speed mixer for later use; (2) then extruding the mixed materials which are uniformly mixed by a twin-screw extruder; and (3) granulating the materials which are extruded by the twin-screw extruder to prepare the high-molecular plastic particles for the cable. The prepared high-molecular plastic particles for the cable are suitable for a cable sheath material.