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Cemented carbide extrusion molding adhesive and preparation thereof

A technology of extrusion molding and cemented carbide, which is applied in the field of cemented carbide extrusion molding binder and preparation, can solve the problems of single binder components, poor degreasing and shape retention performance of forming blanks, etc., and achieve less equipment, Effect of shortening degreasing time and reducing production cost

Inactive Publication Date: 2009-02-25
JINAN INSTITUTE OF METALLURGICAL SCIENCE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of single traditional binder components and poor degreasing and shape-retaining properties of the formed billet, the present invention provides a new cemented carbide extrusion forming binder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The conventional adhesive and the adhesive of the present invention were used for comparison.

[0017] Traditional binder raw material is composed of: 95% paraffin and 5% stearic acid; two groups of binders of the present invention are, group 1: 75% paraffin, 10% styrene-butadiene rubber, 5% dibutyl phthalate Esters, 5% rapeseed oil and 5% stearic acid, the organic solvent is 120 # Gasoline; Group 2: 78% paraffin, 20% styrene-butadiene rubber, 2% dibutyl phthalate, 3% rapeseed oil and 6% stearic acid, the organic solvent is n-hexane.

[0018] The preparation method of present embodiment binding agent is:

[0019] a. At room temperature, use 120 in the sol machine # Dissolve styrene-butadiene rubber in gasoline or n-hexane to make rubber gasoline solution for later use;

[0020] b. Add paraffin wax into the mixer and heat to 65-75°C to melt, then add dibutyl phthalate, rapeseed oil, stearic acid and rubber gasoline solution, and stir for 2-5 minutes to obtain the prod...

Embodiment 2

[0025] The conventional adhesive and the adhesive of the present invention were used for comparison.

[0026] Traditional binding agent consists of: 95% paraffin and 5% stearic acid; two groups of binding agents of the present invention consist of, group 1: 65% paraffin, 15% styrene-butadiene rubber, 3% dibutyl phthalate Esters, 1% rapeseed oil and 3% stearic acid; Group 2: 60% paraffin, 6% styrene-butadiene rubber, 8% dibutyl phthalate, 6% rapeseed oil and 2% stearic acid. The preparation method is the same as in Example 1.

[0027] The experiment adopts the same batch of superfine cemented carbide compound JF10112, which is divided into three groups, one group adopts traditional binding agent (marked as O), and the other two groups adopt the binding agent of group 1 and group 2 of the present invention ( Denoted as N and M), the cemented carbide powder was added to the mixer and mixed, extruded into a rod with a model size of Φ8×300, and degreased under the same conditions....

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Abstract

The invention relates to a binder, in particular to a binder for extrusion molding of a hard alloy and a preparation method thereof. The binder is made from the following components by weight percentage: 65-80% of paraffin wax, 10-20% of styrene butadiene rubber, 3-5% of dibutyl phthalate, 3-5% of rapeseed oil, 3-5% of stearic acid, and the rest of organic solvents. The preparation method is as follows: the styrene butadiene rubber is dissolved into the organic solvents at normal temperature to prepare a rubber solution for spare use; the paraffin wax is added to a blender and heated to the temperature of 65-75 DEG C for melting, and then added with the dibutyl phthalate, the rapeseed oil, the stearic acid and the rubber solution and stirred for 2-5min to obtain the binder. The binder has the advantages of available and cheap raw materials, simple preparation process, good degreasing and shape retention properties, short degreasing time, improving the production efficiency and saving the production cost.

Description

technical field [0001] The invention relates to a binder, in particular to a cemented carbide extrusion forming binder and a preparation method. Background technique [0002] The traditional binder in the cemented carbide extrusion forming process is two components or three components, such as foreign PE (polyethylene) / SA (stearic acid), PP (polypropylene) / SA (stearic acid) , domestic 20 / SBS (styrene-butadiene-styrene block polymer) + 75 / PW (paraffin) + 5 / SA (stearic acid), etc., although widely used, there are obvious deficiencies, due to The component is single, the degreasing and shape-retaining performance of the formed blank is poor, and the degreasing time is long, and there are many degreasing defects. In addition, high polymers such as polyethylene or polypropylene have high melting points, and the preparation method of the binder requires equipment. Higher, the cemented carbide extrusion forming binder is developing in the direction of multi-component. Contents o...

Claims

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Application Information

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IPC IPC(8): C08L91/08C08L9/06C08K5/12C08K5/10C08K5/09B22F1/00
Inventor 卢平书高新亮刘以兴
Owner JINAN INSTITUTE OF METALLURGICAL SCIENCE CO LTD
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