阅读说明：本技术 一种石墨烯改性涤纶浸胶帆布的生产方法 (Production method of graphene modified polyester impregnated canvas ) 是由 张玉柱 徐义忠 欧正清 姚敏 于 2019-10-22 设计创作，主要内容包括：本发明公开了一种石墨烯改性涤纶浸胶帆布的生产方法,属于帆布领域,包括以下生产步骤：步骤一、织布：采用涤纶工业长丝分别作为经线和纬线,采用平纹织造工艺编织,得到涤纶坯布；步骤二、浸渍：将涤纶坯布放入浸胶槽内进行浸渍处理,浸胶槽包括一浴浸胶槽和二浴浸胶槽,一浴浸胶槽内盛放有RFL浸渍液,二浴浸胶槽内盛放有石墨烯水性浆料,坯布分别经过一浴浸胶槽和二浴浸胶槽后,经过二浴干燥、二浴定型后,卷取成改性帆布。本发明针对现有的涤纶帆布导热性不高、分散效果不好等技术问题进行改进,改性后的涤纶浸胶帆布在导热性方面均具有较大的提升,并且胶液的分散性能也有了较高的提升。为涤纶帆布的应用场景提供了较好的思路。(The invention discloses a production method of graphene modified polyester impregnated canvas, belonging to the field of canvas and comprising the following production steps: step one, weaving: respectively taking the polyester industrial filaments as warps and wefts, and weaving by adopting a plain weaving process to obtain polyester grey cloth; step two, dipping: putting the polyester gray fabric into a glue dipping tank for dipping treatment, wherein the glue dipping tank comprises a first-bath glue dipping tank and a second-bath glue dipping tank, RFL dipping liquid is contained in the first-bath glue dipping tank, graphene water-based slurry is contained in the second-bath glue dipping tank, the gray fabric passes through the first-bath glue dipping tank and the second-bath glue dipping tank respectively, and is subjected to two-bath drying and two-bath shaping, and then is rolled into the modified canvas. The invention improves the technical problems of low thermal conductivity, poor dispersion effect and the like of the existing polyester canvas, the modified polyester impregnated canvas has great improvement in the aspect of thermal conductivity, and the dispersion performance of glue solution is also improved. Provides a better idea for the application scene of the polyester canvas.)

1. A production method of graphene modified polyester impregnated canvas is characterized by comprising the following production steps:

step one, weaving

Respectively taking the polyester industrial filaments as warps and wefts, and weaving by adopting a plain weaving process to obtain polyester grey cloth;

step two, dipping

And putting the polyester gray fabric into a glue dipping tank for dipping treatment, wherein the glue dipping tank comprises a first-bath glue dipping tank and a second-bath glue dipping tank, RFL dipping liquid is contained in the first-bath glue dipping tank, graphene water-based slurry is contained in the second-bath glue dipping tank, the gray fabric passes through the first-bath glue dipping tank and the second-bath glue dipping tank respectively, and is coiled into the modified canvas after two-bath drying and two-bath shaping.

2. The production method of the graphene modified polyester gum dipping canvas as claimed in claim 1, wherein the warp density of the polyester grey cloth is 150-250 pieces/10 cm, and the weft density is 80-130 pieces/10 cm; the warp threads are 800-1500D, and the weft threads are 500-1200D.

3. The production method of the graphene modified polyester impregnated canvas as claimed in claim 1, wherein the mass content of RF in the one-bath impregnation tank is 22-25%, and the ratio of RF: the weight ratio of L is 1: 5-8.

4. The production method of the graphene-modified polyester impregnated canvas as claimed in claim 1, wherein the graphene aqueous slurry contains 3.5-5% by weight of graphene.

5. The method for producing graphene modified polyester impregnated canvas as claimed in claim 1, wherein the graphene aqueous slurry further comprises a dispersant, nano alumina powder, quartz powder, a modified resin and a flame retardant.

6. The method for producing graphene modified polyester impregnated canvas as claimed in claim 1, wherein the dispersant is silicone resin, silicone oil or nano silicon dioxide powder; the modified resin is polyamide resin or vinyl resin; the flame retardant is magnesium hydroxide, aluminum hydroxide or talcum powder.

7. The method for producing graphene modified polyester impregnated canvas as claimed in claim 1, wherein the polyester grey cloth is further subjected to one-bath drying and stretching drying after one-bath impregnation; after the polyester grey cloth is subjected to two-bath gum dipping, the polyester grey cloth is subjected to two-bath drying, two-bath shaping and low-temperature cooling treatment;

wherein the temperature of the front drying oven is controlled to be 110-130 ℃ in the primary drying process, the temperature of the rear drying oven is controlled to be 120-150 ℃, and the temperature of the oven in the stretching drying process is controlled to be 180-195 ℃; and controlling the temperature of the oven in the two-bath drying process to be 150-170 ℃, controlling the temperature of the oven in the two-bath shaping process to be 200-220 ℃, and coiling the modified canvas after air cooling treatment.

8. The production method of the graphene modified polyester impregnated canvas as claimed in claim 5, wherein the mass ratio of the dispersing agent, the nano alumina powder, the quartz powder, the modified resin and the flame retardant is 6:4:2: 5-8: 1.

Technical Field

The invention relates to the field of canvas, in particular to a production method of graphene modified polyester impregnated canvas.

Background

The graphene is a novel hot door material which is developed rapidly in recent years, and has the characteristics of light weight, high specific strength, high specific surface area, ultrahigh heat conductivity and the like. The gum dipping canvas is a product applied to the field of rubber framework materials, and particularly under a high-temperature working condition environment, the good heat conductivity of the gum dipping canvas can quickly conduct heat from an external environment, so that the stable quality of a rubber product is ensured. The impregnated canvas treated by the graphene can meet the requirements.

Terylene is an important variety in synthetic fibers and is the trade name of polyester fibers in China. The fiber is made from polyethylene terephthalate, which is fiber-forming high polymer prepared by esterification or ester exchange and polycondensation reaction of polyethylene terephthalate or dimethyl terephthalate and ethylene glycol as raw materials, and spinning and post-treatment. The composite fiber is the simplest of three synthetic fibers, is relatively cheap in price, and has the characteristics of firmness, durability, good elasticity, deformation resistance, corrosion resistance, insulation, stiffness, smoothness and the like. The terylene also has higher application field as industrial cloth. Although the polyester canvas has high-temperature resistance and flame retardance, the thermal conductivity of the polyester canvas is not high, and therefore, the graphene is used for modifying the polyester fibers, so that the overall thermal conductivity and high strength of the canvas are improved.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a production method of graphene modified polyester impregnated canvas, which aims to solve the technical problems of low thermal conductivity, poor dispersion effect and the like of the polyester canvas in the prior art;

in order to solve the technical problems, the invention discloses a production method of graphene modified polyester impregnated canvas, which comprises the following production steps:

step one, weaving

Respectively taking the polyester industrial filaments as warps and wefts, and weaving by adopting a plain weaving process to obtain polyester grey cloth;

step two, dipping

Putting the polyester gray fabric into a glue dipping tank for dipping treatment, wherein the glue dipping tank comprises a first-bath glue dipping tank and a second-bath glue dipping tank, RFL dipping liquid is contained in the first-bath glue dipping tank, graphene water-based slurry is contained in the second-bath glue dipping tank, the gray fabric passes through the first-bath glue dipping tank and the second-bath glue dipping tank respectively, and is subjected to two-bath drying and two-bath shaping, and then is rolled into the modified canvas.

Furthermore, the warp density of the polyester grey cloth is 150-250 pieces/10 cm, and the weft density is 80-130 pieces/10 cm; the warp is 800-1500D, and the weft is 500-1200D.

Further, the mass content of RF in the one-bath dipping tank is 22-25%, wherein the mass ratio of RF: the weight ratio of L is 1: 5-8.

Further, the graphene aqueous slurry contains 3.5-5% by weight of graphene.

Further, the graphene aqueous slurry also comprises a dispersing agent, nano alumina powder, quartz powder, modified resin and a flame retardant.

Further, the dispersing agent is silicon resin, silicon oil or nano silicon dioxide powder; the modified resin is polyamide resin or vinyl resin; the flame retardant is magnesium hydroxide, aluminum hydroxide or talcum powder. The dispersing agent can better disperse the graphene, so that the uniformity of the dipping solution is improved; the polyamide resin and the vinyl resin can improve the brittleness of the rubber attached to the surface of the canvas, and improve the adhesive capacity and the anti-stripping performance of the canvas and rubber.

Further, the polyester grey cloth is subjected to one-bath gum dipping and then is subjected to one-bath drying and stretching drying; after the polyester grey cloth is subjected to two-bath gum dipping, the polyester grey cloth is subjected to two-bath drying, two-bath shaping and low-temperature cooling treatment;

wherein the temperature of the front drying oven is controlled to be 110-130 ℃ in the primary drying process, the temperature of the rear drying oven is controlled to be 120-150 ℃, and the temperature of the oven in the stretching drying process is controlled to be 180-195 ℃; and controlling the temperature of the oven in the two-bath drying process to be 150-170 ℃, controlling the temperature of the oven in the two-bath shaping process to be 200-220 ℃, and coiling the modified canvas after air cooling treatment.

Further, the mass ratio of the dispersing agent to the nano-alumina powder to the quartz powder to the modified resin to the flame retardant is 6:4:2: 5-8: 1. The addition of auxiliary materials can be better convenient for the dispersion of glue solution and improve the heat dispersion and the fire behavior of the canvas.

The invention discloses a production method of graphene modified polyester impregnated canvas, which greatly improves the acid and alkali resistance, high heat conduction and uniform heat conduction performance of the polyester impregnated canvas by modifying graphene with ultrahigh heat conduction performance and polyester fiber.

Detailed Description

The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.