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Preparation method of high-toughness cyanate impeller cover plate

A technology of cyanate ester and impeller cover, which is applied in the field of preparation of high-toughness cyanate ester impeller cover, which can solve the problems of reduced mechanical properties and easy fracture and breakage, and achieve the effects of long service life, enhanced toughness and high service life

Inactive Publication Date: 2018-10-02
胡建芳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the mechanical properties are reduced after long-term use, it is very easy to break and break when screening and grading materials

Method used

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Embodiment Construction

[0020] The present invention will be further described below.

[0021] A method for preparing a high-toughness cyanate ester impeller cover plate, comprising the following steps:

[0022] Step 1), prepare the casting mixture raw materials by mass percentage, tetrahydrofuran propylene oxide copolyether 60%~80%, toluene diisocyanate 4%~20%, vulcanizing agent MOCA 5%~15%, polyester diol 5%~11 %, the rest is crosslinking agent trihydric alcohol N3010;

[0023] Step 2), clean the mold and apply a release agent;

[0024] Step 3), pour the tetrahydrofuran propylene oxide copolyether prepared in step 1) into the reaction kettle, start the agitator, turn on the heating power at the same time to start heating, and then put the prepared toluene diisocyanate, polyester diol, Slowly pour the joint agent triol N3010 into the reaction kettle, turn off the heating power when the temperature rises to 50-60°C, wait for the natural temperature rise to control the temperature between 80-90°C, i...

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Abstract

The invention relates to a preparation method of a high-toughness cyanate impeller cover plate. The preparation method comprises the following steps: firstly, preparing a casting mixture raw materialsaccording to mass percent; secondly, cleaning a die and smearing a releasing agent; thirdly, preparing a prepolymer; fourthly, preparing a cyanate prepolymer; fifthly, heating the die treated in thesecond step, enabling the temperature of the die to be kept at 60 to 70 DEG C, and keeping sprues at two ends of the die in a horizontal direction; sixthly, obtaining a casting mixture; seventhly, moulding by casting; eighthly, carrying out sulfidizing treatment; ninthly, taking a tube sulfidized in the eighth step and cleaning the inner and outer surfaces of the tube to obtain the high-toughnesscyanate impeller cover plate. According to the preparation method disclosed by the invention, wear resistance of the impeller cover plate is improved, the toughness of the impeller cover plate is enhanced, and the conditions that fracturing, breaking and the like easily occur when mechanical properties are reduced due to long-time use and materials are screened and classified are effectively prevented.

Description

technical field [0001] The invention relates to a method for preparing a high-toughness cyanate impeller cover plate, belonging to the technical field of impeller cover plate design. Background technique [0002] At present, polyurethane impeller cover plate material is often used, which makes the product more wear-resistant and has a longer service life. Combining air suction, slurry suction and flotation to form a flotation circuit, without any auxiliary equipment, horizontal configuration, easy to change the process; equipped with manual control, automatic control and electric control devices for the pulp surface, easy to adjust; impeller cover plate Composed of closed double truncated cones, it can produce strong slurry down circulation. When the flotation machine is working, the ore feeding pipe feeds the ore pulp to the center of the cover plate, and the centrifugal force generated by the impeller rotation will throw the ore pulp out, and at the same time, a negative ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/66C08G18/48C08G18/42C08G18/32
CPCC08G18/3206C08G18/3814C08G18/4018C08G18/42C08G18/4854C08G18/6611C08G18/6618C08G18/7614
Inventor 乐少兵李林瑞
Owner 胡建芳
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