CN-115991932-B - Anti-static trench cover plate

Abstract

The invention provides an anti-static trench cover plate, which relates to the technical field of cover plates, and the anti-static trench cover plate is prepared from, by weight, 25-30% of polyurea grease, 28-36% of filler, 0.5-2% of conductive filler, 6-20% of curing agent, 16-24% of polyether-ether-ketone, 2-5% of fiber mesh cloth, 0.3-1% of plasticizer and 0.5-3% of other auxiliary agents. According to the invention, the polyether-ether-ketone and the plasticizer are mixed, hot-melt extruded and then pressed to form the cover plate inner core, polyurea grease, filler, conductive filler and other auxiliary agents are mixed and reacted with a curing agent to prepare the injection molding liquid, the injection molding liquid is molded on the surface of the cover plate inner core, the cover plate inner core made of the polyether-ether-ketone material has higher strength, the finished cover plate can be prevented from being easily deformed, the addition of the conductive filler can adjust the resistance of the outer layer of the finished cover plate, so that the resistance of the finished cover plate can be between antistatic standards, and the finished cover plate can achieve better use effect.

Inventors

• HUANG LIXUE

Assignees

• 立美地板制品(广东)有限公司

Dates

Publication Date

20260512

Application Date

20221215

Claims (4)

1. 1. The processing method of the anti-static ditch cover plate is characterized in that the preparation raw materials of the anti-static ditch cover plate comprise, by weight, 25-30% of polyurea grease, 28-36% of filler, 0.5-2% of conductive filler, 6-20% of curing agent, 16-24% of polyether-ether-ketone, 2-5% of fiber mesh, 0.3-1% of plasticizer and 0.5-3% of other auxiliary agents; the filler is one or a mixture of a plurality of carbon black, talcum powder and mica powder in any proportion; the conductive filler is one or a mixture of a plurality of metal powder and graphene in any proportion; The processing method comprises the following steps: S1, pouring polyether-ether-ketone and plasticizer into a mixer for mixing treatment, wherein the mixing rotating speed is 120-180 revolutions per minute, and the mixing time is 30-40 minutes, so that a mixed material is obtained; S2, pouring the mixed material into an extruder, hot-melting and extruding the mixed material at 320-400 ℃, and then performing compression molding by a molding machine to obtain a cover plate inner core for later use; s3, pouring the polyurea grease, the filler, the conductive filler and other additives into a reaction kettle, heating and stirring at 160-240 rpm for 40-50 min at 160-180 ℃; s4, pouring the curing agent into a reaction kettle, and stirring at the temperature of 120-150 rpm for 20-30 minutes to obtain injection molding liquid; S5, coating fiber mesh cloth on the surface of the cover plate inner core, then placing the inner core coated with the fiber mesh cloth in the central position of a forming die, then introducing injection molding liquid into the forming die, and cooling and forming the injection molding liquid in the forming die to obtain a finished cover plate, wherein the cover plate inner core is required to be positioned in the central position of the interior of the finished cover plate; S6, detecting a finished cover plate, and packaging the finished cover plate in a sealing bag to be put into a warehouse after the finished cover plate is detected to be qualified; And when the resistance value of the finished cover plate is detected in the step S6, the resistance value of the finished cover plate is between 100 megaohms and 600 megaohms.
2. 2. The method of claim 1, wherein the fibrous web comprises nylon and ceramic fibers.
3. 3. The method of claim 1, wherein the curing agent is an aliphatic polyisocyanate.
4. 4. The method of claim 1, wherein the additional auxiliary agent comprises an antifoaming agent, a coupling agent, and a dispersing agent.

Description

Anti-static trench cover plate Technical Field The invention relates to the technical field of cover plates, in particular to an anti-static trench cover plate. Background In the aerospace process, static electricity can have a certain influence on normal and stable operation of equipment, but the conventional ditch cover plate is made of SMC composite materials, and although the conventional ditch cover plate is made of insulating materials, the conventional ditch cover plate cannot reach an antistatic index, so that the ditch cover plate still has partial static electricity in the use process, a better use effect is difficult to achieve, and improvement is needed. Disclosure of Invention The invention aims to solve the defects in the prior art and provides an anti-static trench cover plate. In order to achieve the aim, the invention adopts the following technical scheme that the anti-static trench cover plate is prepared from the following raw materials, by weight, 25-30% of polyurea grease, 28-36% of filler, 0.5-2% of conductive filler, 6-20% of curing agent, 16-24% of polyether-ether-ketone, 2-5% of fiber mesh cloth, 0.3-1% of plasticizer and 0.5-3% of other auxiliary agents. In order to provide sufficient strength to the fiber web, an improvement of the present invention is that the material of the fiber web includes, but is not limited to, nylon and ceramic fibers. In order to be able to normally prepare injection molding liquid, the improvement of the invention is that the filler is one or a mixture of a plurality of carbon black, talcum powder and mica powder in any proportion. In order to achieve the effect of adjusting the resistance, the invention is improved in that the conductive filler is one or a mixture of a plurality of metal powder, graphene and silicon dioxide powder in any proportion. In order to enable the outer layer of the finished cover plate to be cured normally, the improvement of the invention is that the curing agent is aliphatic polyisocyanate. In order for the reaction to proceed properly, the improvement of the present invention includes, but is not limited to, defoamers, coupling agents, and dispersants. The processing method of the antistatic trench cover plate comprises the following steps: S1, pouring polyether-ether-ketone and plasticizer into a mixer for mixing treatment, wherein the mixing rotating speed is 120-180 revolutions per minute, and the mixing time is 30-40 minutes, so that a mixed material is obtained; S2, pouring the mixed material into an extruder, hot-melting and extruding the mixed material at 320-400 ℃, and then performing compression molding by a molding machine to obtain a cover plate inner core for later use; s3, pouring the polyurea grease, the filler, the conductive filler and other additives into a reaction kettle, heating and stirring at 160-240 rpm for 40-50 min at 160-180 ℃; s4, pouring the curing agent into a reaction kettle, and stirring at the temperature of 120-150 rpm for 20-30 minutes to obtain injection molding liquid; S5, coating fiber mesh cloth on the surface of the cover plate inner core, then placing the inner core coated with the fiber mesh cloth in the central position of a forming die, then introducing injection molding liquid into the forming die, and cooling and forming the injection molding liquid in the forming die to obtain a finished cover plate, wherein the cover plate inner core is required to be positioned in the central position of the interior of the finished cover plate; and S6, detecting the finished cover plate, and packaging the finished cover plate into a warehouse by using a sealing bag after the finished cover plate is detected to be qualified. In order to make the finished cover plate meet the use requirement, the improvement of the invention is that the resistance value of the finished cover plate needs to be between 100 megaohms and 600 megaohms when the resistance value of the finished cover plate is detected in the step S6. Compared with the prior art, the invention has the advantages and positive effects that: According to the invention, the polyether-ether-ketone and the plasticizer are mixed, hot-melt extruded and then pressed to form the cover plate inner core, polyurea grease, filler, conductive filler and other auxiliary agents are mixed and reacted with a curing agent to prepare injection molding liquid, the injection molding liquid is molded on the surface of the cover plate inner core, the cover plate inner core made of the polyether-ether-ketone material has higher strength, the finished cover plate can be prevented from being easily deformed, the conductive filler is added to adjust the resistance of the outer layer of the finished cover plate, so that the resistance of the finished cover plate can be between antistatic standards, and the finished cover plate can achieve a better use effect. Drawings Fig. 1 is a flow chart of an anti-static trench cover plate according to the present invention. De