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Screw and charging barrel structure for strong-shearing-force chemical reactor

A chemical reactor and strong shearing technology, applied in the field of screw and barrel structure, can solve the problems of insufficient graft copolymerization reaction, insufficient screw shear force, low extrusion efficiency, etc., and achieve good chain breaking and grafting effect, increased shear force, and improved shear performance

Active Publication Date: 2015-09-09
焦作市禹通塑料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When the above-mentioned shear structure reacts and processes some polymer materials, there are still problems such as insufficient screw shear force, insufficient graft copolymerization reaction, and low extrusion efficiency.

Method used

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  • Screw and charging barrel structure for strong-shearing-force chemical reactor
  • Screw and charging barrel structure for strong-shearing-force chemical reactor
  • Screw and charging barrel structure for strong-shearing-force chemical reactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The thread distribution form of the screw and the barrel of the strong shearing part is arranged in the form of helix-straight-helix. The length of the screw is l=270mm, the diameter D=90mm, and the aspect ratio is 3.

[0044] The length ratio of each section of the screw: helix: straight line: helix = 1:1:1; the number of helix heads in the helical part is 3, the length-to-diameter ratio is 1, right-handed, and the helix rise angle is 50°; the number of helix heads in the straight part is 3. Evenly distributed, with an aspect ratio of 1.

[0045] The length of the barrel is l=270, the diameter D=92mm, and the aspect ratio is 3.

[0046] The length ratio of each section of the barrel is spiral: straight line: spiral = 1:1:1; the number of screw groove heads in the spiral part is 3, the length-to-diameter ratio is 1, left-handed, and the screw edge rise angle is 50°; the number of screw edge heads in the straight line part is 5. Evenly distributed, with an aspect ratio...

Embodiment 2

[0058] The thread distribution form of the screw and the barrel of the strong shearing part is arranged in the form of helix-straight-helix. The length of the screw is l=270mm, the diameter D=90mm, and the aspect ratio is 3.

[0059] The length ratio of each section of the screw: helix: straight line: helix = 1:1:1; the length-to-diameter ratio of the helix part is 1, right-handed, and the helix angle is 50°; The edge sections are selected as trapezoidal shape.

[0060] The length of the barrel is l=270, the diameter D=92mm, and the aspect ratio is 3.

[0061] The length ratio of each section of the barrel is helix: straight line: helix = 1:1:1; The edge sections are selected as trapezoidal shape.

[0062] The number of heads of the screw flight and the barrel groove is combined in the form of 3 heads, 4 heads and 5 heads in order to carry out the combination experiment.

[0063] The motor power is 22Kw, and the speed is 600 rpm.

[0064] Raw materials: High-density polye...

Embodiment 3

[0073] The thread distribution form of the screw and the barrel of the strong shearing part is arranged in the form of helix-straight-helix. The length of the screw is l=270mm, the diameter D=90mm, and the aspect ratio is 3.

[0074] Among them, the length ratio of each section of the screw: helix: straight line: helix = 1:1:1; the number of helix heads in the helical part is 5, the length-to-diameter ratio is 1, and right-handed; the number of helix heads in the straight part is 5, uniformly distributed, long The diameter ratio is 1; the cross-section shape of the spiral rib is trapezoidal Image 6 .

[0075] The length of the barrel is l=270, the diameter D=92mm, and the aspect ratio is 3.

[0076] Among them, the length ratio of each section of the barrel is spiral: straight line: spiral = 1:1:1, the number of screw groove heads in the spiral part is 5, the length-to-diameter ratio is 1, and left-handed; the number of screw edge heads in the straight line part is 5, unifo...

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Abstract

The invention discloses a screw and charging barrel structure for a strong-shearing-force chemical reactor. According to the structure, a strong shearing section is communicated with the back end surface of a melting section, and a screw in the strong shearing section rotates in a charging barrel to form a strong shearing and conveying structure; screw edges of the screw in the strong shearing section and screw grooves in the charging barrel adopt a combined structure of a screw structure and a linear structure; the thread number of both the screw edges of the screw and the screw grooves in the charging barrel is 5; the rise angles of the screw edges of the screw and the screw grooves in the charging barrel are 40 degrees; when the width of the screw edges of the screw and the screw grooves in the charging barrel is 10, the height of the screw edges of the screw is 4.5 mm, and the depth of the screw grooves in the charging barrel is 2 mm; the rotating directions of the screw edges of the screw and the screw grooves in the charging barrel are opposite. The screw edges of the screw in the strong shearing section and the screw grooves in the charging barrel adopt a screw and linear combined structure, so that the shearing performance of the chemical reactor on molten state high polymer material is improved by 100%.

Description

technical field [0001] The invention relates to a screw rod and barrel structure of an extruder, in particular to a screw rod and barrel structure with strong shearing force for the extruder. Background technique [0002] Hot melt adhesive is a kind of thermal adhesive that can obtain bonding fluidity after heating. Its main feature is high bonding strength, and different hot melt adhesives can be selected according to different usage occasions. The hot-melt adhesive prepared by polyolefin molecular chain scission and maleic anhydride grafting has certain adhesion to metal and non-metal. The quality of the bonding performance depends on the degree of grafting reaction when the hot melt adhesive is prepared, and the degree of grafting reaction depends on the degree of chain scission of polyolefin molecules. Therefore, improving the degree of chain scission of polymer molecular chains is of great significance to the performance of hot melt adhesive products. [0003] The pu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/62B29C47/66
CPCB29C48/397B29C48/535B29C48/59B29C48/64B29C48/65B29C48/655B29C48/681B29C48/685B29C48/688
Inventor 陈占春张帅李峰张智春
Owner 焦作市禹通塑料科技有限公司
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