CN202781782U

CN202781782U - Bionic mixing-extruding test machine

Info

Publication number: CN202781782U
Application number: CN2012202687575U
Authority: CN
Inventors: 詹瑾
Original assignee: BEIJING YINGBOYUAN TECHNOLOGY CO LTD
Current assignee: BEIJING YINGBOYUAN TECHNOLOGY CO LTD
Priority date: 2012-06-08
Filing date: 2012-06-08
Publication date: 2013-03-13
Anticipated expiration: 2022-06-08

Abstract

The utility model relates to a bionic mixing-extruding test machine. A bionic structure is respectively designed at the end face of a screw rod and the bottom surface in a mixing room of the test machine according to the characteristics of the micro-structural rigid hairs of the toes of the wall gecko, so that the shearing and dispersing effects can be improved, the slippage of the high polymer material liquid or the melt relative to the end face of the screw rod and the bottom surface in the mixing room can be reduced, and the centrifugal force can be controlled to enable the flow of the high polymer material liquid or the melt to flow to a flow field edge; and a reversed screw thread groove and a groove which is in parallel with the axis of a screw rod are designed on the outer surface of the screw rod, the reversed screw thread groove limits the material to flow out of the mixing room, and the grooves arranged on the surface in parallel to the axis of the screw rod, of the screw rod, enable the air and the volatile components in the mixing room to escape. The test machine consists of parts, i.e. the end-face mixing type screw rod, the mixing room, a speed adjusting motor, a discharge valve, an electric control cabinet and the like, the mixing time can be set as required, the extruding characteristic of the test machine is as the same as that of the common extruding machine, and almost all the thermoplastic high molecular materials and filling dispersing high molecular materials can be mixed, processed and extruded.

Description

A kind of bionical mixing-extrusioning experiment machine

Technical field

The present invention relates to a kind of processing of high molecular material experimental machine, particularly a kind of thermoplastic macromolecule material machining experiment machine.

Background technology

At present, the macromolecular material research direction remains advanced polymer alloy, advanced blend polymer, biological medical polymer material, intelligent macromolecule material and biomimetic polymer material, and the functional high molecule material research and development of adding fire-retardant, CNT, Graphene, the auxiliary agent such as antibiotic, therefore, the machining experiment machine that is fit to material development is in demand, but a difficult problem that perplexs for a long time the required processing of high molecular material experimental machine of researcher mainly contains three:

The one, existing processing of high molecular material experimental machine is the combined experiments machine, or extrusioning experiment machine just, namely mixes and extrudes two kinds of operations and can only finish at distinct device.For example, one of kind of combined experiments machine is the rotor-type flow graph, have good mixing and divergent function, but incorporation time Set arbitrarily, but the mixture irregular shape that makes, a large amount of bubbles or pore are contained in inside, the batten that can not directly be used for the moulding regular shape as moulding material, and the operator easily scalds, and labour's intensity is large, more is not suitable for women researcher or does not have physical librarian use; The product of extruding of single Screw Extrusion experimental machine or twin-screw extrusion experimental machine has regular shape, but incorporation time can only be by screw speed and draw ratio control, although the incorporation time of low-rotate speed Screw Extrusion experimental machine is long, but the shear action during low-rotate speed is low, and the heterogeneous system dispersion mixing is poor; Big L/D ratio Screw Extrusion experimental machine incorporation time is longer, but equipment is huge, heavy, floor space is large, complicated operation.

The 2nd, relative slippage occurs with the mixing chamber wall in macromolecular material, and dispersion mixing is sheared in impact.

The 3rd, existing experimental machine need to consume considerable raw material, limited the further investigation of the speciality polymer material of the expensive and high added value such as polyether-ether-ketone, polyimides, more limit the further investigation of the dispersion mixing macromolecular materials such as bioabsorbable polymer material, Graphene and CNT, affected the development and application process of advanced macromolecular material.

Therefore, need exploitation a kind of have mix with extrude standalone feature, macromolecular material and mixing chamber wall do not occur that relative slippage, incorporation time are controlled arbitrarily, consumptive material is few, simple to operate, power consumption is low, take up an area little, easy to operate melt polymer material processes mixing-extrusioning experiment machine.Patent of invention ZL200510086697.X " microscale mix-extrude-injecting formation integrated experimental device " has the characteristics of the controlled and extrusion molding regular shape batten of incorporation time, find that its heterogeneous dispersion mixing is relatively poor but use, there is relative slippage between macromolecular material liquid or melt and screw rod end face and the mixing chamber inner bottom surface, and centrifugal action causes macromolecular material liquid or melt-flow to the field of flow edge, and dispersion effect is sheared in impact; Secondly, air and the volatile matter in the hybrid chamber is difficult for loss.

Summary of the invention

The purpose of this invention is to provide a kind of more high shear field of flow and more the high dispersive mixed effect, good get rid of mix indoor gas, incorporation time controlled, can extrude galley proof, take up an area very little high polymer alloy, the experiment such as polymer-function material, macromolecule disperse composite is with trace material bionical mixing-extrusioning experiment machine.

A kind of bionical mixing of the present invention-extrusioning experiment machine is made of the L of end face mixed type screw rod 100 end face mixed type screw rod 100, mixing chamber 200, discharge valve 300, handwheel 400, buncher 500, temperature control and speed control cabinet 600 ₁ Section end face 101 forms the mill mixing chamber with the inner bottom surface of mixing chamber 200, and such as Fig. 1 a and shown in Figure 2, the working depth h of mixing chamber is 0mm～10mm among Fig. 2, v presentation layer Flow Velocity, and screw rod 100 all adopts the stainless steel manufacturing with mixing chamber 200.

The end face 101 of end face mixed type screw rod 100 of the present invention is designed with normal direction groove 102 (Fig. 1 b), quote that gecko leaps onto roofs and vault over walls and the toe absorption principle, zone 103 between normal direction groove 102 and the inner bottom surface 201 of mixing chamber 200 are designed with the rigidity fine hair 104 of 31415～282740 imitative gecko's toes micro-structurals, the high 30 μ m of rigidity fine hair 104～130 μ m, diameter 0.2 μ m～0.5 μ m, spacing 20 μ m～50 μ m, as shown in Figure 3, rigidity fine hair strengthen among macromolecular material liquid or melt and Fig. 1 a 201 and Fig. 1 b in the adhesion strength on 103 surface or the molecular attraction of macromolecular chain.The gravitational condensation of this up to ten thousand small rigidity fine hair becomes one huge adhesion strength, makes macromolecular material liquid or melt be adsorbed on firmly among Fig. 1 a among 201 surface and Fig. 1 b 103 surface, thereby improves shearing and the dispersion effect of mill mixing chamber.

The groove 106 that the L1 section outer surface of screw rod 100 of the present invention is designed with reverse thread groove 105 and parallels to the axis, the pitch angle alpha will of reverse thread groove 105 is that 5 °～30 °, groove width are 0.5mm～3mm, groove depth is 0.5mm～2mm, and the groove width of the surface grooves 106 that parallels to the axis is that 0.1mm～3mm, groove depth are that 0.1mm～2mm, flute length equal L ₁, as shown in Figure 4, the L of screw rod 100 ₁Reverse thread 105 can prevent from expecting the adverse current that flows on the section outer surface, and the groove 106 that parallels to the axis can make and mix indoor gas or volatile matter loss.

The L of screw rod 100 of the present invention ₁The end face 101 of section is designed with 3 normal direction grooves 102 that connect the center, and the groove width of normal direction groove is that 0.05mm～1mm, groove depth are that 0.05mm～1mm, flute length equal screw rod 100L ₁The outer diameter D of section is such as Fig. 1 b and shown in Figure 4.

The normal direction groove 102 of screw rod end face 101 is equivalent to a mill, forms the mill die cavities with the inner bottom surface 201 of mixing chamber 200, rapidoprint is fully ground and mixes, and mixing chamber 200 interior diameters are 10mm～30mm, the L of screw rod 100 ₁Section is outer to be 10mm～30mm through D, L ₁/ D ratio is 1～3.

Secondly, mixing chamber 200 interior diameters are 10mm～30mm; The L1 section of screw rod 100 is outer to be 10mm～30mm through D, L ₁/ D ratio is 1～3, and mixed once-extrude processing raw material are 0.5g～10g, and operating temperature is room temperature～400 ℃, and the rotating speed of screw rod 100 is 0.1rpm～300rpm.

Experimental machine of the present invention has been installed screw rod 100 and the mixing chamber 200 with Fig. 1, Fig. 3 and Fig. 4 and architectural feature shown in Figure 5, and discharge valve 300, rotates up and down buncher 500, temperature control and the speed control cabinet 600 of traveling priority by handwheel 400.

Screw rod 100 and the motor 500 of experimental machine of the present invention are connected on the same axis, are connected on the same axis, and move up and down synchronously.

The height of a kind of bionical mixing of the present invention-extrusioning experiment machine is 400mm～800mm, base size 200mm * 200mm～600mm * 600mm.

Description of drawings

Fig. 1 a end face mixed type screw rod and mixing chamber and relative position schematic diagram thereof

Fig. 1 b screw rod end face structure schematic diagram

Fig. 2 mill shear flow field schematic diagram

Fig. 3 rigidity fluff structures schematic diagram

Fig. 4 screw-rod structure schematic diagram

The bionical mixing of Fig. 5 (a)-extrusioning experiment owner looks schematic diagram

Schematic diagram is looked on the bionical mixing of Fig. 5 (b)-extrusioning experiment machine right side

The specific embodiment

The L of the end face mixed type screw rod 100 of a kind of bionical mixing-extrusioning experiment machine ₁Section is outer to be 20mm through D, the intracavity diameter 20 of mixing chamber 200 ^{+ 0.2}Mm, L ₁/ D ratio is 1.25, L ₁The pitch angle alpha will of reverse thread groove 105 of section outer surface is that 17 °, groove width are that 1.5mm, groove depth are 1mm; The wide of the surface grooves 106 that parallels to the axis is that 1.5mm, groove depth are that 1mm, flute length equal L ₁The L of screw rod 100 ₁The groove width of the normal direction groove 102 in the end face 101 of section is that 1.3mm, groove depth are that 0.8mm, flute length equal D; L in the screw rod 100 ₁The bottom inner bottom surface 201 of zone and the mixing chamber 200 artificial rigidity fine hair of 125600 high 30 μ m, diameter 0.25 μ m, spacing 50 μ m that distributing respectively between the section end face normal direction groove; This experimental machine is comprised of end face mixed type screw rod 100, mixing chamber 200, discharge valve 300, handwheel 400, buncher 500, temperature control and speed control cabinet 600; The height of this experimental machine is 600mm, base size 300mm; Mixed once-extrude processing polyether-ether-ketone/carbon nanometer 8g, 380 ℃ of operating temperatures, the rotating speed of screw rod 100 is 100rpm.

Claims

1. bionical mixing-extrusioning experiment machine, it is characterized in that: this experimental machine is by end face mixed type screw rod (100), mixing chamber (200), discharge valve (300), handwheel (400), buncher (500), temperature control and speed control cabinet (600) form, the end face (101) of end face mixed type screw rod (100) is designed with normal direction groove (102), zone (103) between the normal direction groove (102) and the inner bottom surface (201) of mixing chamber (200) are designed with the rigidity fine hair (104) of 31415～282740 imitative gecko's toes micro-structurals, the high 30 μ m of rigidity fine hair (104)～130 μ m, diameter 0.2 μ m～0.5 μ m, spacing 20 μ m～50 μ m, the L of screw rod (100) ₁The groove (106) that the section outer surface is designed with reverse thread groove (105) and parallels to the axis, the pitch angle alpha will of reverse thread groove (105) is that 5 °～30 °, groove width are 0.5mm～3mm, groove depth is 0.5mm～2mm, and the groove width of the surface grooves that parallels to the axis (106) is that 0.1mm～3mm, groove depth are that 0.1mm～2mm, flute length equal L ₁, the L of screw rod (100) ₁The end face (101) of section is designed with 3 normal direction grooves (102) that connect the center, and the groove width of normal direction groove is that 0.05mm～1mm, groove depth are that 0.05mm～1mm, flute length equal screw rod (100) L ₁The outer diameter D of section, the normal direction groove (102) of screw rod end face (101) is equivalent to a mill, form the mill die cavity with the inner bottom surface (201) of mixing chamber (200), mixing chamber (200) interior diameter is 10mm～30mm, the L of screw rod (100) ₁Section is outer to be 10mm～30mm through D, L ₁/ D ratio is 1～3.