Thermoforming process and equipment of aramid paper-based composite material

A composite material and thermoforming technology, applied in papermaking, papermaking machines, press parts, etc., can solve the problems of incomplete, cumbersome waste, uneven size of aramid composite paper, etc., and achieve the effect of improving efficiency and increasing contact area.

Active Publication Date: 2021-10-01
ZHEJIANG WINBON SPECIALTY PAPER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the aramid paper-based composite material is hot-pressed, the chopped fiber and aramid pulp are mixed according to a certain ratio, and then dried and hot-pressed, and during the hot-pressing process, due to the mixed aramid The uneven thickness of the fiber paper often leads to the phenomenon of overflow or incompleteness of the aramid fiber paper after hot pressing, that is, the outside of the formed aramid composite paper contains small pieces of waste material of uneven size, and the excess waste material is being removed It is relatively cumbersome, which affects the processing of aramid composite paper. For this reason, we propose aramid paper-based composite material thermocompression molding process and equipment

Method used

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  • Thermoforming process and equipment of aramid paper-based composite material
  • Thermoforming process and equipment of aramid paper-based composite material
  • Thermoforming process and equipment of aramid paper-based composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The invention provides a technical solution:

[0029] The thermocompression molding process of aramid paper-based composite materials includes the following preparation steps:

[0030] Step 1: Base material selection: Weigh out a certain proportion of aramid chopped fiber, aramid pulp and dispersant S, and chemically pretreat the aramid chopped fiber, and at the same time put the aramid pulp in a beater beating;

[0031] Step 2: beating and dispersing: the aramid chopped fiber and aramid pulp in step 1 are composed according to the ratio of 5:5 and put into the mixing pulp tank to mix evenly;

[0032] Step 3: Compression molding: Open the valve of the head box, put the slurry in step 2 into the inside of the head box, and use the slurry pump to transport the slurry to the inside of the headbox, and put it into the headbox at the same time Inclined wire, after soaking for a period of time, take out the inclined wire with pulp, put it into the press to squeeze the pulp ...

Embodiment 2

[0040] The invention provides a technical solution:

[0041] The thermocompression molding process of aramid paper-based composite materials includes the following preparation steps:

[0042] Step 1: Base material selection: Weigh out a certain proportion of aramid chopped fiber, aramid pulp and dispersant S, and chemically pretreat the aramid chopped fiber, and at the same time put the aramid pulp in a beater beating;

[0043] Step 2: beating and dispersing: the aramid chopped fiber and aramid pulp in step 1 are composed according to the ratio of 4:6 and put into the mixing pulp tank and mixed evenly;

[0044] Step 3: Compression molding: Open the valve of the head box, put the slurry in step 2 into the inside of the head box, and use the slurry pump to transport the slurry to the inside of the headbox, and put it into the headbox at the same time Inclined wire, after immersion for a period of time, take out the inclined wire with pulp, put it into a press to squeeze the pu...

Embodiment 3

[0052] The invention provides a technical solution:

[0053] The thermocompression molding process of aramid paper-based composite materials includes the following preparation steps:

[0054] Step 1: Base material selection: Weigh out a certain proportion of aramid chopped fiber, aramid pulp and dispersant S, and chemically pretreat the aramid chopped fiber, and at the same time put the aramid pulp in a beater beating;

[0055] Step 2: beating and dispersing: the aramid chopped fiber and aramid pulp in step 1 are composed according to the ratio of 3:7 and put into the mixing pulp tank to mix evenly;

[0056] Step 3: Compression molding: Open the valve of the head box, put the slurry in step 2 into the inside of the head box, and use the slurry pump to transport the slurry to the inside of the headbox, and put it into the headbox at the same time Inclined wire, after immersion for a period of time, take out the inclined wire with pulp, put it into a press to squeeze the pulp ...

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Abstract

The invention discloses a process and equipment for hot-pressing forming of aramid paper-based composite materials, including the steps of base material selection, beating and dispersing, compression molding, hot-pressing pretreatment, and hot-pressing forming. The formed aramid fiber paper is extended by an extension device, so that the outer side of the newly formed aramid fiber paper is evenly distributed. This aramid paper-based composite material thermocompression molding process and equipment, the extension device will dry the aramid with humidity The aramid fiber paper can be compressed and stretched, so that the aramid fiber paper can be effectively adjusted and shaped, and at the same time, the part containing the aramid fiber paper with a thicker surface can be effectively filled to the part with a thinner surface thickness of the aramid fiber paper. The surface thickness of the mixed aramid fiber paper is uniformly extended, and the efficiency of the aramid fiber paper in hot pressing is further improved.

Description

technical field [0001] The invention relates to the technical field of aramid paper manufacturing, in particular to an aramid paper-based composite material thermocompression molding process and equipment. Background technique [0002] Aramid paper (also known as "polyaramid fiber paper") is made of aramid staple fiber and aramid fibridized fiber as papermaking raw materials, which are wet-formed by inclined wire printing and then hot-pressed. [0003] When the aramid paper-based composite material is hot-pressed, the chopped fiber and aramid pulp are mixed according to a certain ratio, and then dried and hot-pressed, and during the hot-pressing process, due to the mixed aramid The uneven thickness of the fiber paper often leads to the phenomenon of overflow or incompleteness of the aramid fiber paper after hot pressing, that is, the outside of the formed aramid composite paper contains small pieces of waste material of uneven size, and the excess waste material is being rem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21F11/00D21D1/02D21F3/00
CPCD21D1/02D21F3/00D21F11/00
Inventor 陈建斌马龙虎肖伟郑宏亮
Owner ZHEJIANG WINBON SPECIALTY PAPER
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