CN205364484U - A kind of extrusion molding equipment for high glass fiber reinforced nylon material - Google Patents

Abstract

The utility model discloses an extrusion moulding equipment for fine reinforcing nylon material of high glass, including the extruder organism, be equipped with the conveying screw who runs through the extruder organism in the extruder organism, be equipped with main feed feeding section, preliminary working section, first filling feeding section, first mixed section, second filling feeding section, shearing plastify section, vacuum section and play material section according to the loose direction of conveying screw on the organism. The utility model discloses a set up bilateral side feed mode on the extruder, can improve filler content, fill content more than 50%, through set for specific screw rod configuration after the second side machine is gone into to fill, strengthen filler and base resin's compatibility and fill the dispersive power in base resin, extrude through the aircraft nose at last, brace, water-cooling, cut grain, wait to fill reinforcing combined material, obtain good particle surface appearance and good comprehensive physical properties.

Description

A kind of extrusion molding equipment for high glass fiber reinforced nylon material

technical field

The utility model relates to the field of composite material processing technology, in particular to extrusion molding equipment for high glass fiber reinforced nylon materials.

Background technique

Plastic modification is a relatively broad concept. Whether it is through physical, chemical, mechanical or other ways to improve the original performance of the resin or improve it, it is called plastic modification. The application range of plastic modification is wide; it can be said that all plastics, The quality of plastics can be improved by modification methods, such as density, hardness, precision, appearance, processability, transparency, mechanical properties, electromagnetic properties, chemical properties, corrosion resistance, aging resistance, wear resistance, thermal properties , flame retardancy, barrier and cost. Plastic modification is the most effective way to reduce costs and improve performance.

Plastic modification methods: 1. Filling modification: Adding a certain amount of fillers to plastics can effectively reduce the production cost of plastics, and adding nano-powders with special functions can make corresponding functional masterbatches. 2. Blend modification: Two or more polymer compounds with similar properties are mixed in a certain proportion to form a polymer blend. 3. Copolymerization modification: two or more monomers are polymerized to obtain a copolymer, such as ethylene + propylene = ethylene propylene rubber; acrylonitrile + butadiene + styrene = ABS resin.

Reducing the density of plastics: Reducing the density of plastics refers to reducing the original relative density of plastics through appropriate methods to meet the needs of different applications. There are three ways to reduce the density of plastics: foaming modification, adding lightweight fillers and blending lightweight resins. 1. Foaming reduces the density of plastic. Foam molding of plastic products is the most effective way to reduce their density. The two modification methods of adding light additives and blending light resin can only reduce the density slightly, generally only about 50%, and the minimum relative density can only reach about 0.5. The density of plastic foamed products varies in a wide range, and the relative density can reach as low as 10-3. 2. Adding light fillers reduces the density of plastics. This method makes the density decrease relatively small, generally the lowest can be reduced to about 0.4-0.5 relative density. The relative density of fillers is mostly higher than that of plastics, and there are only the following types of fillers with lower relative densities than plastics: (1) microbeads, a, glass hollow microspheres (floating beads) with a relative density of 0.4-0.7, mainly used for thermosetting Resin; b. The relative density of phenolic microbeads is 0.1. (2) Organic fillers, a, relative density of cork powder 0.5, apparent density 0.05-0.06; b, relative density of fiber powder and cotton dust 0.2-0.3; c, fruit shell crops such as straw powder, peanut powder and coconut shell powder etc. The amount of lightweight filler added is generally below 50%, in principle not to seriously affect its original performance. 3. Blend light resin to reduce the density of plastic. This method has a smaller reduction and is generally only suitable for the selection of plastics with relatively high density, such as fluoroplastics, POM, PPS, HPVC, PA66, PI and thermosetting plastics. The available lightweight plastics refer to several resins with a relative density below 1, such as poly-4-methylpentene-1, EPR (ethylene-propylene copolymer), PE, PP, EVA, etc. The amount added is mainly about 20%-40% without affecting other properties of the plastic.

At present, filling modification is widely used in the modification industry. Through filling modification, not only the material has better comprehensive mechanical properties, but also the material cost is reduced. However, with the increase of the filler content, the processing performance of the material is getting worse and worse, and the dispersion of the filler in the resin is getting worse and worse. Many high-fiber composite materials directly use part of the glass fiber from the main feed and rubber Extruded together, this processing technology can obtain modified plastics with high glass fiber content, but the glass fiber is excessively sheared in this process, the comprehensive mechanical properties are low, the appearance of the particles is not ideal, and the extruded products cannot be widely used , and this process increases the degree of wear between the glass fiber and the cylinder, affecting the service life of the machine.

Utility model content

The purpose of this utility model is to provide a kind of extrusion molding equipment for high glass fiber reinforced nylon material, to provide a new type of processing equipment to overcome the above-mentioned processing defects, so that the high glass fiber filling material has good comprehensive mechanical properties and Good particle appearance.

In order to achieve the above object, the utility model provides the following technical solutions:

An extrusion molding equipment for high-glass fiber reinforced nylon materials, including an extruder body, a conveying screw that runs through the extruder body is arranged in the extruder body, and a The main feeding section, the preliminary processing section, the first filling section, the first mixing section, the second filling section, the shear plasticizing section, the vacuum section and the discharge section, of which the first filling section Both the side feed and the second filling and feeding section are fed by side feeding; the shearing and plasticizing section adopts shear blocks and toothed discs that cooperate with each other on the screw.

As a further technical solution of the utility model, the toothed disk in the shearing and plasticizing section adopts a helical toothed disk.

As a further technical solution of the utility model, the toothed disk in the shearing and plasticizing section adopts a straight toothed disk.

Compared with the prior art, the utility model can increase the filling content by setting the double-side feeding mode on the extruder, and the filling content is above 50%. screw configuration, to enhance the compatibility of the filler and the matrix resin and the dispersibility of the filler in the matrix resin, and finally through the head extrusion, drawing, water cooling, pelletizing, until the composite material is filled, the screw configuration is selected The gear plate element and the shear block element are used together to increase the dispersion ability of the filler material in the matrix resin, and obtain a good particle surface appearance and good comprehensive physical properties.

Description of drawings

Fig. 1 is a structural schematic diagram of an extrusion molding equipment for high glass fiber reinforced nylon material of the present invention.

Fig. 2 is a structural schematic diagram of a helical gear plate in a preferred embodiment in the shearing section of the present invention.

Fig. 3 is a schematic diagram of assembly of the helical toothed disc in Fig. 2 when in use.

Fig. 4 is a schematic structural view of a straight toothed disc in a preferred embodiment in the shearing section of the present invention.

Figure 5 is a schematic diagram of the assembly of the straight toothed disc in Figure 4 when it is in use

detailed description

The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

Please refer to Figures 1 to 5, a kind of extrusion molding equipment for high-glass fiber reinforced nylon materials, including an extruder body 1, in which a conveying screw penetrating through the extruder body is provided, and in the body 1 According to the loosening direction of the conveying screw, there are main feeding section 10, primary processing section, first filling section 11, first mixing section, second filling section 12, shear plasticizing section 13, vacuum Section 14 and discharge section 15, wherein the first filling and feeding section 11 and the second filling and feeding section 12 all adopt the mode of side feeding; Blocks and toothed discs realize the effect of shearing, crushing and mixing of feed materials.

As shown in Figures 2-3, in a preferred embodiment of the present invention, the toothed disk in the shearing and plasticizing section 13 adopts a helical toothed disk 130 .

As shown in Figures 4-5, in a preferred embodiment of the present invention, the toothed disk in the shearing plasticizing section 13 adopts a straight toothed disk 131 .

Compared with the prior art, the utility model can increase the filling content by setting the double-side feeding mode on the extruder, and the filling content is above 50%. screw configuration, to enhance the compatibility of the filler and the matrix resin and the dispersibility of the filler in the matrix resin, and finally through the head extrusion, drawing, water cooling, pelletizing, until the composite material is filled, the screw configuration is selected The gear plate element and the shear block element are used together to increase the dispersion ability of the filler material in the matrix resin, and obtain a good particle surface appearance and good comprehensive physical properties. The toothed disk elements are designed as ZME (helical toothed disk) or TME (straight toothed disk.

The preferred implementation of this patent has been described in detail above, but this patent is not limited to the above-mentioned implementation. Within the scope of knowledge of those of ordinary skill in the art, various implementations can be made without departing from the purpose of this patent. kind of change.

Claims (3)

1. the extrusion equipment for high glass fiber reinforcement nylon material, it is characterized in that, including extruder body (1), the conveying screw rod of extruder body it is provided with through in extruder body, body (1) is provided with main feeding feed zone (10) according to the direction that conveying screw rod is loose, preliminary working section, first fills pan feeding section (11), first mixing section, second fills pan feeding section (12), shear fluxing zone (13), vacuum zone (14) and discharging section (15), wherein the first filling pan feeding section (11) and second is filled pan feeding section (12) and is all adopted the mode feed of side charging；Shear and fluxing zone (13) employing screw rod arranges the cutout and toothed disc that cooperate.

2. a kind of extrusion equipment for high glass fiber reinforcement nylon material according to claim 1, it is characterised in that shear the toothed disc in fluxing zone (13) and adopt helical teeth dish (130).

3. a kind of extrusion equipment for high glass fiber reinforcement nylon material according to claim 1, it is characterised in that shear the toothed disc in fluxing zone (13) and adopt straight tooth disc (131).