44results about How to "Increase extrusion rate" patented technology

The invention provides a special glass fiber reinforcement PA66 composition for heat-insulation strips and a method for preparing the special glass fiber reinforcement PA66 composition. The composition comprises, by weight, 55-75 parts of nylon 66, 0-10 parts of toughening agents, 0-15 parts of polyethylene, 20-30 parts of chopped glass fibers, 0.01-1 part of silane coupling agents, 0.01-1 part of antioxidants and 0.1-3 parts of lubricants. The special glass fiber reinforcement PA66 composition for the heat-insulation strips and the method have the advantages that the special glass fiber reinforcement PA66 composition is high in performance and extrusion rate and excellent in appearance, requirements of the heat-insulation strip industry on the performance and the appearance of materials can be met, and the special glass fiber reinforcement PA66 composition and the method have important application and popularization value.

The invention discloses a mud-like heat-conducting composite material. The mud-like heat-conducting composite material comprises the following compositions according to a weight proportion: 3%-50% ofsilicone oil, 0.1%-5% of a cross-linking agent, 0.1%-5% of a surface modifier, 0-20% of a fire retardant, 50%-97% of heat-conducting filler, 0.05%-0.015% of a catalyst, and other auxiliaries. In addition, the invention further discloses a preparation method for the above mud-like high-temperature-resistant heat-conducting composite material. The mud-like heat-conducting composite material has theadvantages of excellent high temperature resistance, a high heat conductivity coefficient, good heat stability, a low oil yield, convenient extrusion, good storage stability and strong operability andthe like, and is capable of greatly improving efficiency, and very suitable for solving a heating problem of electronic components.

The invention relates to the technical field of artificial filament manufacturing, and discloses a polyester chip melting device for enhancing a material screening effect. The polyester chip melting device comprises an extrusion cylinder, an inner cavity of the extrusion cylinder is rotatably connected with an extrusion screw rod, the upper end and the lower end of the extrusion screw rod are bothfixedly connected with symmetrical sliding cylinders, storage strips is fixedly connected to the ends, away from the extrusion screw rod, of the sliding cylinders, scraping strips extending to the storage strips are slidably connected to inner cavities of the sliding cylinders, and first springs are fixedly connected between the scraping strips and the inner walls of the sliding cylinders. According to the polyester chip melting device capable of enhancing the material screening effect, the extrusion screw rods drive a transmission disc to rotate, racks drive a threaded toothed rod to rotatein a reciprocating mode, a screening block is matched with a pulley to intermittently extrude a screening plate to vibrate and remove impurities, the first springs enabling the scraping strips to haveelastic allowance are matched, and the first springs are arranged in the sliding cylinders in a sealed mode; and therefore, the service life and the use reliability of a scraping mechanism are improved, and the purity of raw materials is ensured.

The invention discloses a low-density and high-extrusion-rate PVC fireproof sealing strip, which comprises the following components in percentage by mass: 10-40% of polyvinyl chloride resin powder, 10-40% of expanded graphite, 5-30% of filler, 2-10% of light filler, 0.5-5% of a foaming agent, 0.5-5% of a cell regulator, 10-40% of a plasticizer, 0.5-5% of a heat stabilizer, 2-6% of a flame retardant and 0.5-5% of a processing aid. According to the invention, the lightweight fireproof raw material is utilized to replace part of the filler, and the foaming agent and the cell regulator are added, so that the density of the PVC sealing strip is reduced on the premise of not increasing the cost and not losing the performance, the sealing strip is prevented from falling off due to too high self weight in the use process, and the use condition of the PVC sealing strip is reduced.

The invention relates to the technical field of novel functional materials, and discloses a method for recycling polyvinylidene fluoride plastic. The method comprises the steps of mixing a prepared composite additive with crushed polyvinylidene fluoride waste plastic particles, adding a coupling agent, and performing extruding and granulating by virtue of a double-screw extruder, wherein the prepared composite additive is subjected to melt blending with polyvinylidene fluoride waste plastic, so that high compatibility is achieved, and the compactness and uniformity of the structure are improved; the composite additive is of a multi-metal organic compound structure, so that the crystallization area is reduced when the composite additive is in combination with polyvinylidene fluoride, the occurrence of a photooxidation reaction can be inhibited, and the tensile strength and the high temperature resistance are improved; meanwhile, the light resistance, the low temperature resistance and the thermal stability of the polyvinylidene fluoride molecules are improved, the problem that the waste polyvinylidene fluoride plastic is seriously aged, and the performance of the prepared plastic product is reduced is solved; and the quality problems such as surface defects caused by adding of a filler and the like are eliminated, and the low temperature resistance and the flexibility of the material are improved.

The invention belongs to the technical field of diaphragm filter presses, particularly relates to a full-automatic diaphragm filter press, and aims to solve the problems that a filter cake is insufficient in dehydration and a diaphragm hole is easy to block due to the fact that a filter cake is in a shape with a thin middle part and a thick periphery due to the mounting position of an existing diaphragm. The full-automatic diaphragm filter press comprises a main beam, and one end of the main beam is fixedly provided with a hollow frame; supporting legs are fixedly mounted at the bottom ends of the main beam and the hollow frame, guide rods are fixedly mounted on the two sides of the interior of the main beam, and a plurality of filter plates are placed at the top ends of the two guide rods. According to the invention, airflow is simultaneously conveyed to each corner in the diaphragm through the hose in the diaphragm and the plurality of S-shaped branch pipes, so that each part of a filter cake is uniformly stressed when the diaphragm is bulged and compressed, and the plurality of magnetic rings at the two ends of the diaphragm and the suction blocks of the two filter plates attract each other; the diameter of the magnetic ring is smaller than that of the sleeve, so that the two ends of the diaphragm are attracted by magnetic force to uniformly expand and extrude the filter cake during air blowing, and the extrusion rate of the filter cake is increased.

A wood-plastics composition is prepared from used or waste plastics, wooden fibres for modifying plastics, and resin compatibilizer through fusing and proportionally mixing. Said resin compatibilizer is prepared from EVA, acrylic acid or acrylate and polyvinyl chloride through mixing. Its advantages are high strength toughness, and improved machinability.

The invention discloses a high-temperature-resistant flexible rubber hose outer layer rubber, which is made of the following components in parts by weight: 35 parts of rubber raw material EPDM, 65 parts of polyurethane elastomer rubber TPU, and mica powder 9 parts, carbon black 55 parts, stearic acid 2.1 parts, plasticizer 4.5 parts, accelerator DM 1.3 parts, vulcanizing agent DCP 0.8 parts, sulfur 0.76 parts, antioxidant AW 5.0 parts, composite flame retardant FR201 0.7 parts. The invention also discloses a high temperature resistant flexible rubber hose. The rubber material of the outer layer prepared by the present invention has good fluidity, can make the hardness of the hose soft and easy to coil, has a good affinity with the middle rubber layer, is not easy to crack, and has good wear resistance, which greatly improves the flexibility of the hose. scratch resistance performance.

The invention discloses a high-ductility rare earth wrought magnesium alloy Mg-Zn-Mn-Nd-Y. The magnesium alloy is prepared from the following components in percentage: 1.3-2.5% of Zn, 0.7-1.3% of Mn, 0.3-0.7% of Nd, 0.3-0.7% of Y, and the balance of magnesium and unavoidable impurities. In the high-ductility rare earth wrought magnesium alloy disclosed by the invention, Mn, Nd and Y are added based on the low alloyed Mg-Zn system to refine grains, so as to improve the strength at room temperature, heat stability and plastic forming performance; the hot extrusion performance of the alloy is better than that of an AZ31 alloy, the alloy is good in hot working plasticity, and capable of being quickly subjected to compressional deformation; at the room temperature, the tensile strength is 260-295 MPa, the yield strength is 190-208 MPa, and the ductility is 19-30%. When used for industrial production, the high-ductility rare earth wrought magnesium alloy can be extruded and machined to obtain a plate, a bar, a pipe, a profile and a forge piece product with diversified sizes.

The invention discloses a rapidly prototyping PVC-U pipe and a preparation method thereof. The raw materials for preparing the rapidly prototyping PVC-U pipe include: 100 parts of polyvinyl chloride resin, 12-18 parts of modified EVA, chlorine 5-18 parts of polyethylene, 6-12 parts of plasticizer, 2-6 parts of potassium titanate whiskers, 0.1-0.5 parts of antioxidant, 2.5-4.0 parts of heat stabilizer, stearic acid 0.8-1.6 parts of calcium, 1.5-2.5 parts of stearic acid. The rapidly formed PVC-U pipe material prepared by the present invention has excellent thermal stability and impact resistance, has little adhesion with equipment during processing, is easy to process and form rapidly, and has a simple preparation method, easy operation of the preparation process, and economic benefits. good.

The clean ink bottle includes one bottle body and one bottle cap to seal the bottle mouth. The bottle mouth has two ring flanges extending to the center separately in the bottom and the top, and one ink absorbing block of elastic ink absorbing material, with central hole and held with the ring flanges. The present invention can solve the problem of ink attachment onto the sucked pen shaft, avoid waste of ink and facilitate the ink sucking operation.

The invention relates to an extrusion production line and a control method thereof, comprising: a heating furnace provided with a heating chamber inside, the heating chamber can accommodate at least two raw materials along its extending direction; a pushing mechanism and a feeding mechanism, the pushing mechanism is used At least two raw materials accommodated in the heating chamber are pushed to move towards the direction close to the feeding mechanism, and the feeding mechanism is used to send the raw materials on it to the extruder; the pushing mechanism can push the first raw material relatively close to the feeding mechanism. The first part of the raw material moves to the feeding mechanism, and the second part of the first raw material stays in the heating chamber; the pressing mechanism, the pressing mechanism can apply a downward force towards the feeding mechanism on the first part, and in the feeding mechanism Under the action of power and downward pressure, the first raw material is completely moved out of the heating chamber; the feeding mechanism has a first bearing surface for bearing the first part, and the heating chamber has a second bearing surface for bearing the second part. The height of the surface is higher than the height of the second bearing surface.