448results about How to "Increased ring stiffness" patented technology

The invention relates to an internal rib reinforcing outer ripple type plastic spirally twining structured wall pipe, which comprises a cylindrical surfaced pipe main body and a reinforcing rib wound outside of the pipe main body. The reinforcing rib contains an inner reinforcing rib vertical to the pipe wall, wherein the inner rib divides the reinforcing rib into two parallel hollow cavities. The upper part of the reinforcing rib and the top of the inner rib are both provided with a solid bulge. A method for manufacturing the plastic reinforcing pipe of the invention comprises the steps of: continuously extruding a plastic abnormal strip with two tubular bulges and containing a hollow cavity inside through a first plastic extruder, continuously, regularly, spirally twining the plastic abnormal strip on a formed roller in parallel, at the same time, extruding fused plastic gel in a clearance between adjacent side walls of the spirally wound plastic abnormal strip through a second plastic extruder, rolling two projected tubular cavities corresponding to two sides of the clearances connected by fusing the adjacent plastic abnormal pipe through a rolling wheel which is arranged at the corresponding part on the periphery of the formed roller with a slot structure, forming an outer projected reinforcing rib of the pipe outer wall by fusing the two tubular bulges, and extruding the residual fused gel in the clearance by the rolling wheel so as to form the solid bulge.

The invention belongs to the field of a plastic check well and a preparation method thereof, and particularly relates to a polyethylene and polyvinyl chloride modified environment-friendly plastic check well and a preparation method thereof, aiming at solving the technical problem that the existing plastic check well is poor in impact strength, sensitive to temperature and bad for ring stiffness. According to the scheme for solving the technical problems, the invention provides the polyethylene and polyvinyl chloride modified environment-friendly plastic check well, which comprises the following compositions in parts by weight: 50-150 parts of polyethylene resin, 50-150 parts of polyvinyl chloride resin, 10-30 parts of nano materials, 0.5-5 parts of pigments, 2-20 parts of a lead-free stabilizer, 1-20 parts of processing aids, 1-5 parts of a lubricant, 0.5-5 parts of an antioxidant, 0.5-2 parts of a light stabilizer, 1-25 parts of a compatilizer, 1-15 parts of an impact modifier, 1-15 parts of an enhancer, and 0.5-10 parts of a coupling agent. The environment-friendly plastic check well is good in ring stiffness, high in impact strength, low in cost and long in service life.

The nanometer level hard polyvinyl chloride pipe material consists of polyvinyl chloride resin 100 weight portions, composite stabilizer 2-6 weight portions, machining assistant 1-6 weight portions, shock resisting agent 1-8 weight portions, and stuffing 20-30 weight portions. The present invention adopts nanometer level stuffing, such as nanometer level calcium carbonate material, to make the hard polyvinyl chloride pipe material possess low temperature shock resisting performance and cyclic rigidity higher than that of available similar pipe material. In addition, the nanometer level hard polyvinyl chloride pipe material has excellent wear resistance, low construction loss and high corrosion resistance.

The invention discloses a double-plastics finned wound corrugated pipe and a method for manufacturing the same. A pipe wall of the double-plastics finned wound corrugated pipe is in the shape of a corrugated pipe which is squeezed and inflated and is integrated by means of spirally winding and hot melting, a bell socket and a spigot socket are respectively formed in two ends of the double-plastics finned wound corrugated pipe, cavities are arranged in corrugations of the pipe wall, strip-shaped plastic reinforcing ribs are arranged in the cavities and are perpendicular to the pipe wall, the outer edge of each plastic reinforcing rib is connected with a crest ring surface of the corresponding cavity by means of hot melting, and the inner edge of each plastic reinforcing rib is annularly connected with the other surface of the corresponding cavity by means of hot melting. The double-plastics finned wound corrugated pipe and the method have the advantages that the double-plastics finned wound corrugated pipe is good in ring stiffness and corrosion resistance and long in service life, and future maintenance investment is nearly zero; the bell socket and the spigot socket are connected with each other by means of electric hot melting, so that a system is good in airtight property, and forming machines implemented in a manufacturing procedure are simple and are low in investment and cost; the double-plastics finned wound corrugated pipe and the method can be widely applied to wall pipes with large and super-large apertures for drain and blowdown structures.

The invention discloses a compound double-wall corrugated pipe, which is prepared from the following components in part by weight: 100 parts of mixture of polythene and polypropylene, 3-10 parts of coupling agent, 3-10 parts of rigid particle, 2-6 parts of master batch, 2-6 parts of blue batch and 3-9 parts of defoaming agent. The preparation process comprises the following steps of: evenly mixing the components in a high-speed mixer; after evenly mixing in a cold mixer, extruding tubes by using a double-host single screw extruder; modulizing, vacuumizing and cooling the tubes to form; and fixing the length and cutting and packaging the tubes. With the blending and the modification of polypropylene and polythene and the use of the rigid particles, the compound double-wall corrugated pipe well solves the problem of strong and unyielding balance, i.e. the tubes has higher toughness while having high annular rigidity. The tubes are made of completely non-toxic raw material and have good sanitary performance as well as the characteristic of simple production process.

The invention discloses a reinforced and modified corrugated power protection sleeve, which is produced by taking polyethylene or polypropylene or polyvinyl chloride as a main material and adding glass fibres, inorganic powder, an interface phase solvent, an impact modifier, a lubricant and toner to the main material. Among the components, the glass fibres and the inorganic powder can multiply the ring stiffness of a tubular product and reduce the manufacturing costs of the product, wherein the inorganic powder is one or a mixture of calcite master batch, a magnesium carbonate powder material or a calcium carbonate powder material; the interface phase solvent enables the components to be fully blended so as to facilitate granulation; and the impact modifier is a mixture of an acrylics impact modifier ACR and a chlorinated polyethylene impact modifier CPE, wherein the acrylics impact modifier ACR is excellent in workability and good in impact resistance and weather resistance and can be stable for a long time, the chlorinated polyethylene impact modifier CPE is a rubber body and is high in elasticity and excellent in impact resistance but is poor in workability and inferior to acrylics in weather resistance, but the synergistic effect of the two impact modifiers allows the good short-term impact resistance of the tubular products to be developed, and can ensure the long-term impact resistance of the tubular products.

The invention relates to method for producing strengthen macromolecule polyethylene coil tube, which uses at least one layer of macromolecule polyethylene section material as coil material alternatively or irregularly arranged, and nearby side walls are fused to connected or adhered by fused material, to be screwed to form tube wall. The coil material is drawn to direct the molecule longitudinally. The macromolecule polyethylene base material is added with strength material and/or flameproof material and/or static resistance composed. The fusing connecting material is plastic polymer or added with strength material and/or flameproof material and/or static resistance, to form plastic fused material. The strength material is distributed in the coil material and/or fusing connecting material, directionally distributed along the screw of high-strength coil tube. The invention has high strength, flameproof property and static resistance.

A material used for making hard corrugated PVC pipe is prepared from PVC (100 pts.wt.), trisalt (6.4-6.8 pts.wt.), lead stearate (0.42-0.47 pts.wt.), barium stearate (1.4-1.7 pts.wt.), stearic acid (0.42-0.47 pts.wt.), microcrystal paraffin (0.36-0.41 pts.wt.), polyvinyl wax (0.58-0.62 pts.wt.), ACR (401) (1.9-2.1 pts.wt.), chlorinated polyethylene (5.8-6.3 pts.wt.), superfine calcium carbonate (9-11 pts.wt.) and AC 316 (0.28-0.33 pts.wt.). Its advantages are high lubricating performance, impact strength, ring rigidity and Vicat softening temp, good demoulding nature, and excellent low-temp plasticity.

The invention discloses a rainwater penetrating-discharging integrated ecological system, which comprises penetration inspection wells distributed on the ground of residential areas, penetration drainage ditches which are in a network shape and connected on all the penetration inspection wells and transversal connecting pipes between the penetration inspection wells and the penetration drainage ditches. Permeable holes are formed on the side walls and at the bottoms of the penetration inspection wells, a gravel layer is laid in the peripheries of the penetration inspection wells, a layer of permeable geotextile is laid in the peripheries of the gravel layer, wellheads of the penetration inspection wells are provided with dirt-catching and sewage-blocking baskets therein and permeable well covers are covered on the wellheads; permeable holes are formed on the side walls of the penetration drainage ditches, the peripheries of the penetration drainage ditches are provided with the gravel layer, the peripheries of the gravel layers are provided with a layer of permeable geotexile, and the top parts of the penetration drainage ditches are covered with grate covers of the drainage ditches. The invention has the advantages of simple design principle and convenient construction. The invention can save water consumption, reduce rainwater runoff in a city and relieve municipal drainage pressure, thereby not only realizing early draining of rainwater, purifying water, but also realizing the penetration of rainwater, conserving underground water source and beautifying the peripheral ecological environment.

The invention relates to a polyethylene-wound structure wall tube and pipe without a frame pipe, which is composed of an inner wall layer and an outer wall layer, wherein the inner wall layer is a continuous solid wall pipe formed by spirally winding a flaky polyethylene band, and adjacent band edges orderly being overlapped with each other; and the outer wall layer is composed of convex stiffening ribs formed by spirally winding a tubular polyethylene band on the external surface of the inner wall layer, and the tubular polyethylene band spirally presses across the overlap seam of each adjacent flaky polyethylene band edges. The production method comprises the following steps: extruding profiled bars, stretching, sizing, winding and fusing. The production method removes the original polypropylene frame pipe, can ensure the centroid distance of the stiffening rib tube, reduce the product weight by more than 20%, reduce raw material consumption, lower the product cost, greatly decrease the internal stress of the tube and pipe, reduce consumption and enhance ring stiff and ring flexibility.

This invention relates to a specific modification material for increasing the rigidity of plastic pipes. The specific modification material is composed of: ultra-fine talcum powder 20-30 parts, toughening agent 10-15 parts, coupling agent 1-2 parts, plasticizer 5-8 parts, dispersant 3-5 parts, and high density polyethylene (HDPE) 50-55 parts. Plastic pipes modified with the specific modification material have rigidity 5-6% higher than that of neat HDPE pipes, thus can solve the problems of easy deformation, large influence to ground smoothness and easy breakage of HDPE pipes. Besides, plastic pipes modified with the specific modification material have improved impact strength and physical properties. Talcum powder can partly replace synthetic resin to reduce the cost.

The invention provides a continuous twining reinforced structure wall pipe. The pipe wall of the continuous twining reinforced structure wall pipe is a spiral circumference; a center line is considered as an axis for specific strip-shaped plastic materials to twine in a spiral manner; the edges of the each adjacent specific strip-shaped plastic materials are overlapped to be integrated with each other to form a continuous solid wall pipe-shaped structure; reinforced adhesive materials which has the same spiral twining form is straddled and pressed on the positions on which overlapping joints of the adjacent specific strip-shaped materials are positioned; a specific single wall corrugated pipe which has the same spiral twining form is straddled and pressed on the reinforced adhesive materials; a strip-shaped material which has the same spiral twining form straddles the specific single wall corrugated pipe in a pressing manner, and adhesive to the pipe wall through a pressing wheel mechanism.

The invention discloses a steel-plastic wound multiple pipe, and a manufacturing device and a manufacturing technique of the steel-plastic wound multiple pipe. The steel-plastic wound multiple pipe comprises a steel-plastic wound multiple pipe substrate, wherein the steel-plastic wound multiple pipe substrate is wound by a steel-plastic band material and is welded through hot melting to form a spiral shape; vertical reinforcing ribs are arranged on the outer surface of the steel-plastic wound multiple pipe substrate. The steel-plastic wound multiple pipe is characterized in that spiral plastic filling materials, which are stuffed in a thermoplastic manner and formed through condensation, are arranged in the grooves between every two reinforcing ribs on the outer surface of the steel-plastic wound multiple pipe substrate. The invention further discloses the manufacturing device and the manufacturing technique of the pipe. The pipe has the advantages of high strength, easiness in manufacturing, and fold increase in bearing capacity of the pipe; meanwhile, the pipe is very low in transforming cost, has a relatively wide applicable scope, and can be widely applied to upgrade and transforming of various steel-plastic wound pipes.

The invention discloses a CPVC used for a high Vicat power cable sleeve and its preparation method. The CPVC is composed of the following raw materials by weight: 80-90 parts of CPVC resin, 10-20 parts of PVC resin, 5-7 parts of composite lead salt stabilizing agent, 1.2-1.8 parts of inner lubricant, 2-4 parts of outer lubricant, 5-8 parts of anti-punching modifier, 2-5 parts of processing auxiliary agent, 20-30 parts of filling material and 0.05-0.1 part of pigment. According to the prepared CPVC sleeve, the Vicat softening temperature can reach more than 103 DEG C, the temperature can reach as high as 80 DEG C for long-term usage, the CPVC sleeve is more suitable for severe environment, the mechanical strength is larger, the ring stiffness of the CPVC sleeve is higher by 12-15% than that of the national standard, the flame resistance is better, the oxygen index can reach as high as 71, the cost is low, and the CPVC used for the high Vicat power cable sleeve and its preparation method are convenient for popularization.

The invention discloses a formula of a reinforced HDPE double-wall corrugated pipe. The formula comprises, by weight, 280 parts of high density polyethylene, 80 parts of chopped glass fibers, 8 parts of elastomer, 12 parts of phenolic resin, 30 parts of wood powder, 8 parts of a coupling agent, 10 parts of calcium carbonate, 10 parts of nanometer silicon oxide, 1 part of an antioxidant, 26 parts of methylsilicone oil and 4 parts of a lubricant. A manufacturing method of the reinforced HDPE double-wall corrugated pipe comprises the following steps: wood powder processing, plasticizing treatment, batch mixing, granulation and compression molding. The reinforced HDPE double-wall corrugated pipe has the advantages of good rigidity and strength, low creep deformation ratio and good impact performance, so the use amount of materials is effectively reduced on the premise of guaranteeing the use performances of the pipe, thereby the cost is saved, and the pipe has very high practical values.

The invention discloses production equipment and a production technology for an HDPE (high density polyethylene) spirally enwound structure-wall pipe (Krah pipe).The equipment comprises a base trolley, cooling fans, a mold roller, rolling wheels, a servo motor, an infrared heating device and a rotating rod. The technology comprises material mixing, feeding, vacuum feeding, extrusion, enwinding, turning, demolding, modification, electric fuse distribution, inspection and storage. According to the production equipment and the production technology, infrared high-frequency heating is adopted, the heating efficiency is high, the cost is low, and the operation is simple and convenient; the ring stiffness is increased by above 30% due to addition of short-glass-fiber master batches; characteristics of HDPE are adopted, so that the comprehensive performance of the pipe is improved; the weld seam quality of the pipe is guaranteed, and the weld seam quality and the overall external pressure resistance of the pipe are also improved.

The invention discloses a method for utilizing waste HDPE plastic to prepare a large-caliber double-wall bellow, essentially comprising the following steps of: using waste high-density polyethylene (HDPE) to prepare a double-wall bellow with the caliber of 1200mm; carrying out cooperative combination to strip, fibrous and spherical fillers; adopting novel elastomer as basic resin; preparing modified master batch which has functions of reinforcing and toughening to the waste HDPE; and using the functional master batch to carry out modification to the waste HDPE so as to lead the mechanical performance thereof to reach the level of new resin of HDPE; and an extrusion mould of the large-caliber double-wall bellow adopts arc structure at peak part, thus improving the ring stiffness of the product and leading the product parameters to meet standard requirements.

The invention discloses an HDPE (high-density polyethylene) double-wall corrugated pipe with high ring stiffness. The HDPE double-wall corrugated pipe comprises the following raw materials in parts by weight: 47 to 49 parts of high-density polyethylene, 17 to 19 parts of high modulus propene polymer (PP), 3 to 5 parts of attapulgite, rigidity-reinforcing and tenacity-reinforcing master batch and the like. Due to the adoption of the formula of the HDPE double-wall corrugated pipe, the ring stiffness of the HDPE double-wall corrugated pipe can be greatly improved; due to the adoption of the attapulgite in the formula, the HDPE double-wall corrugated pipe has high water absorptivity and slurry making property; and due to the adoption of modified acrylic resin which has certain cohesiveness, the machining property is high.

The invention relates to the technical field of steel plastic composite steel pipe manufacturing, in particular to a large-caliber spiral welding steel plastic composite pressure pipe and a manufacturing method thereof, and the problems that the manufacturing method of the existing steel plastic composite steel pipe is single, the structural strength of the pipe body is not ideal, and the adhesion strength of a plastic composite layer is poor are solved. The large-caliber spiral welding steel plastic composite pressure pipe is formed by compounding five or more than five layers of materials with different characteristics, wherein the middle layer is a spirally formed welded steel pipe, the inner surface and the outer surface of the spirally formed welded steel pipe are respectively provided with an inner hot melt adhesive layer and an outer hot melt adhesive layer, the outer hot melt adhesive layer of the spirally formed welded steel pipe is provided with an outer wound plastic layer, and the inner hot melt adhesive layer of the spirally formed welded steel pipe is provided with an inner wound plastic layer. The large-caliber spiral welding steel plastic composite pressure pipe has large integral structure strength and ring stiffness, good rigidity, high bearing pressure, and smooth inner and outer wall surfaces, and the manufacturing method is suitable for manufacturing large-caliber steel plastic composite pressure pipes.

The invention discloses a three-wall corrugated pipe and manufacturing equipment thereof. The pipe includes a pipe body, which includes a smooth inner wall layer, a corrugated intermediate layer and a smooth outer wall layer. The inner wall layer and the outer wall layer are closely connected with the crests or troughs of the intermediate layer, and the pipe body is provided with connection ports for mutual connection. Compared with prior arts, the inventive corrugated pipe has a smooth outer wall, which facilitates dragging and rolling during transportation and construction processes and avoids outer wall corrugation breakage and recess to further influence pipe use. Meanwhile, the outer wall layer is covered, in a molten state, on the outer wall of a double-wall corrugated pipe, which increases the pipe wave height and the moment of inertia to realize higher ring stiffness of the pipe and production of pipes with higher strength requirements on one hand, and increases the longitudinal bending strength of the pipe and improves the ring flexibility of the pipe on the other hand, thus realizing the purpose of the invention.

The invention relates to an ultra-soft temperature-resistant bulletproof optical cable and a production method thereof. The optical cable comprises a cable core, a plastic foaming layer, a bulletproof armored layer and an outer sheath layer, the surface of the cable core is provided with the plastic foaming layer, the outside of the plastic foaming layer is provided with the bulletproof armored layer, the outside of the bulletproof armored layer is provided with the outer sheath layer, the cable core comprises optical fiber units and a central reinforcing element which are twisted in an SZ twisting manner, each optical fiber unit comprises coated optical fibers and a buffer tube, the external parts of the coated optical fibers are wrapped by the buffer tube, the central reinforcing element comprises flexible reinforcing members and a PE sheath layer wrapping the external parts of the flexible reinforcing members, and the outer sheath layer is a bellows sheath. According to the optical cable, good thermal insulation performance is achieved by employing the plastic foaming layer structure, the impact force of the exterior on the optical cable can be effectively buffered, the optical fiber has good flexibility and good bulletproof performance by employing the bulletproof armored layer, the overall bending resistance of the optical fiber can be effectively improved by employing the bellows outer sheath, and the bending recovery toughness can be improved.