阅读说明：本技术 一种玄武岩网布复合材料及其制备方法 (Basalt mesh cloth composite material and preparation method thereof ) 是由 林生雄 何超金 吴星星 李志强 于 2021-07-16 设计创作，主要内容包括：本发明公开了一种玄武岩网布复合材料及其制备方法,属于夹网布复合材料技术领域,该玄武岩网布复合材料由上至下依次包括PVC面膜层、玄武岩网布层和PVC底膜层。该玄武岩网布复合材料制备方法,将烫平后的玄武岩网布浸渍于低粘度的第一糊剂中、烘干,然后将高粘度第二糊剂涂布于玄武岩网布的两侧、烘干；最后将PVC面膜和PVC底膜贴合于玄武岩网布的两侧。该玄武岩网布复合材料的制备方法,成本低,流程简单,能够制备得到的极低伸长率的复合材料,适用于对尺寸变化要求苛刻的产品,克服了玄武岩网布不适于制备夹网布复合材料的问题,所得玄武岩网布复合材料具有良好的剥离强度,且表面平整无气泡。(The invention discloses a basalt mesh cloth composite material and a preparation method thereof, belonging to the technical field of mesh cloth sandwiched composite materials. The preparation method of the basalt mesh cloth composite material comprises the steps of dipping the ironed basalt mesh cloth into a first paste with low viscosity, drying, coating a second paste with high viscosity on two sides of the basalt mesh cloth, and drying; and finally, adhering the PVC surface film and the PVC base film to two sides of the basalt mesh cloth. The preparation method of the basalt mesh cloth composite material is low in cost and simple in process, can be used for preparing the composite material with extremely low elongation, is suitable for products with strict requirements on size change, overcomes the problem that the basalt mesh cloth is not suitable for preparing the mesh cloth composite material, and has good peeling strength and a smooth surface without bubbles.)

1. The preparation method of the basalt mesh cloth composite material is characterized by comprising the following steps:

s1, ironing the basalt mesh cloth, soaking the basalt mesh cloth in the first paste, and then drying; the viscosity of the first paste is 1000-;

s2, coating the second paste on two sides of the basalt mesh cloth obtained in the step 1, and then drying; the viscosity of the second paste is 10000-;

and S3, respectively carrying out preheating treatment on the PVC face film and the PVC base film, and then attaching the PVC face film and the PVC base film to two sides of the basalt mesh cloth obtained in the step 2.

2. The method for preparing the basalt mesh cloth composite material according to claim 1, wherein the drying temperature is 130-150 ℃.

3. The method for preparing the basalt mesh cloth composite material according to claim 1, wherein the temperature of the preheating treatment in the S3 is 160-180 ℃.

4. The method for preparing a basalt mesh composite material according to claim 1, further comprising a pre-treatment step before S1: and (3) before the basalt mesh cloth is ironed, sucking short fibers remained on the surface of the basalt mesh cloth by using a dust suction device.

5. The method of preparing a basalt mesh composite material according to claim 1, wherein the dipping time in S1 is 15-30 min.

6. A basalt mesh composite material produced by the method of producing a basalt mesh composite material according to any one of claims 1 to 5.

Technical Field

The invention belongs to the technical field of mesh cloth-sandwiched composite materials, and particularly relates to a basalt mesh cloth composite material and a preparation method thereof.

Background

The sandwich mesh cloth is a composite material taking textile mesh cloth as base cloth, and one or more layers of materials with different physical properties are compounded on two sides of the mesh cloth. The type of the clamping net cloth is more, such as PVC clamping net cloth, EVA clamping net cloth, rubber clamping net cloth, TPU clamping net cloth and the like. According to the difference of the middle screen cloth types, different lines, colors and performances can be provided for the mesh clamping cloth belts. For some of the interlaid fabrics used to make inflatable products, such as the paddle board Surf (SUP) board in the high-end market, the dimensional change is demanding, requiring the material itself to have very low elongation, which is not achieved with conventional interlaid fabrics. Aiming at the current situation, the carbon fiber cloth is adopted as the base cloth to be made into the composite material, so that the rigorous requirement of the product on the size change of the material can be met. However, carbon fiber cloth is currently used for military products, and the carbon fiber cloth is short in supply and expensive in price and cannot meet the requirements of large quantity and low price of civil enterprises.

Disclosure of Invention

In order to overcome the defects of the prior art, the technical problems to be solved by the invention are as follows: provides the sandwich mesh cloth composite material with lower cost and low finished product expansion and contraction rate and the preparation method thereof.

In order to solve the technical problems, the invention adopts the technical scheme that: a preparation method of a basalt mesh cloth composite material comprises the following steps:

s1, ironing the basalt mesh cloth, soaking the basalt mesh cloth in the first paste, and then drying; the viscosity of the first paste is 1000-;

s2, coating the second paste on two sides of the basalt mesh cloth obtained in the step 1, and then drying; the viscosity of the second paste is 10000-;

and S3, respectively carrying out preheating treatment on the PVC face film and the PVC base film, and then attaching the PVC face film and the PVC base film to two sides of the basalt mesh cloth obtained in the step 2.

The other technical scheme adopted by the invention is as follows: the basalt mesh cloth composite material is prepared according to the preparation method of the basalt mesh cloth composite material.

The invention has the beneficial effects that: the preparation method of the basalt mesh cloth composite material provided by the invention adopts the basalt mesh cloth as the base cloth to prepare the composite material with extremely low elongation, so that the composite material can meet the preparation of products with strict requirements on size change, the problem of poor bonding peeling strength of the basalt mesh cloth and a PVC film is solved by adopting the method of soaking with low-viscosity paste and coating with high-viscosity paste in the preparation process, and the prepared basalt mesh cloth composite material has good peeling strength and is smooth in surface and free of bubbles.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description will be given with reference to the embodiments.

The invention provides a preparation method of a basalt mesh cloth composite material, which comprises the following steps:

s1, ironing the basalt mesh cloth, removing moisture, soaking in the first paste, and drying; the viscosity of the first paste is 1000-;

s2, coating (scraping) the second paste on two sides of the basalt mesh cloth obtained in the step 1, and then drying; the viscosity of the second paste is 10000-;

and S3, respectively carrying out preheating treatment on the PVC face film and the PVC base film, and then attaching the PVC face film and the PVC base film to two sides of the basalt mesh cloth obtained in the step 2.

From the above description, the beneficial effects of the present invention are: the preparation method of the basalt mesh cloth composite material provided by the invention adopts the basalt mesh cloth as the base cloth, and the prepared composite material with the elongation rate of only 4-6% is far lower than that of a common polyester composite material by more than 20%, so that the preparation method can meet the preparation of products with strict requirements on size change;

the basalt fiber for preparing the basalt mesh cloth is an inorganic material, has high brittleness, has poor firmness of compounding the basalt mesh cloth and the resin film, and cannot be generally used for preparing the sandwich mesh cloth. The preparation method provided by the invention adopts the method of soaking by using the low-viscosity paste and coating by using the high-viscosity paste in the preparation process, so that the low-viscosity paste can penetrate through the base cloth, the flexibility of the basalt mesh cloth is increased, the brittleness is reduced, a foundation is provided for the subsequent attachment of the high-viscosity paste, the viscosity of the second paste is higher, the second paste can be well attached to the surface of the basalt mesh cloth by using a coating mode, the problem of poor bonding peeling strength of the basalt mesh cloth and a PVC film is further solved, the prepared basalt mesh cloth composite material has good peeling strength and smooth surface without bubbles, the raw material of the basalt mesh cloth is easy to obtain and has relatively low cost, the cost for preparing the same plain basalt mesh cloth is only 1/3-1/5 of the carbon fiber composite material, and the basalt mesh cloth has good economic value.

Further, the drying temperature is 130-150 ℃.

Further, the temperature of the preheating treatment in S3 is 160-180 ℃.

Further, before S1, a preprocessing step is further included: and (3) before the basalt mesh cloth is ironed, sucking short fibers remained on the surface of the basalt mesh cloth by using a dust suction device.

As can be seen from the above description, the use of the pretreatment step can improve the flatness and firmness of the final product after post-compounding.

Further, the dipping time in S1 is 15-30 min.

From the above description, it can be seen that sufficient soaking time can be achieved to substantially improve the high brittleness of the basalt mesh cloth.

The basalt mesh cloth composite material prepared according to the preparation method of the basalt mesh cloth composite material comprises a PVC surface film layer, a basalt mesh cloth layer and a PVC bottom film layer which are sequentially arranged.

The first embodiment of the invention is as follows:

a preparation method of a basalt mesh cloth composite material comprises the following steps:

s1, absorbing short fibers remained on the surface of the basalt mesh cloth by using a dust absorption device, ironing the basalt mesh cloth to remove moisture, soaking the basalt mesh cloth in the first paste for 30min, and drying the basalt mesh cloth at 130 ℃; the viscosity of the first paste was 2000 cps;

the first paste comprises 100 parts by weight of E-PVC resin, 70 parts by weight of DINP and 2 parts by weight of an E-PVC paste consisting of barium-zinc liquid stabilizer, and a PVC cross-linking agent accounting for 1% of the total mass of the E-PVC paste;

s2, coating the second paste on two sides of the basalt mesh cloth obtained in the step 1, and then drying at 150 ℃; the viscosity of the second paste was 12000 cps;

the second paste comprises an E-PVC paste consisting of 100 parts by weight of E-PVC resin, 60 parts by weight of DINP and 2 parts by weight of barium-zinc liquid stabilizer, and fumed silica accounting for 0.2 percent of the total mass of the E-PVC paste and a PVC cross-linking agent accounting for 4 percent of the total mass of the E-PVC paste;

s3, respectively carrying out preheating treatment at 160 ℃ on the PVC face film and the PVC base film, and then attaching the PVC face film and the PVC base film to two sides of the basalt mesh cloth obtained in the step 2;

the basalt mesh cloth composite material sequentially comprises a PVC surface film layer, a basalt mesh cloth layer and a PVC bottom film layer from top to bottom.

The second embodiment of the invention is as follows:

a preparation method of a basalt mesh cloth composite material comprises the following steps:

s1, sucking short fibers remained on the surface of the basalt mesh cloth by using a dust suction device, ironing the basalt mesh cloth, soaking the basalt mesh cloth in the first paste for 15min, and drying at 140 ℃; the viscosity of the first paste was 1000 cps;

the first paste comprises 100 parts by weight of E-PVC resin, 90 parts by weight of DINP and 3 parts by weight of an E-PVC paste consisting of barium-zinc liquid stabilizer, and a PVC cross-linking agent accounting for 3% of the total mass of the E-PVC paste;

s2, coating the second paste on two sides of the basalt mesh cloth obtained in the step 1, and then drying at 140 ℃; the viscosity of the second paste is 10000 cps;

the second paste comprises an E-PVC paste consisting of 100 parts by weight of E-PVC resin, 70 parts by weight of DINP and 4 parts by weight of barium-zinc liquid stabilizer, and fumed silica accounting for 0.1 percent of the total mass of the E-PVC paste and a PVC cross-linking agent accounting for 5 percent of the total mass of the E-PVC paste;

s3, respectively carrying out preheating treatment at 180 ℃ on the PVC face film and the PVC base film, and then attaching the PVC face film and the PVC base film to two sides of the basalt mesh cloth obtained in the step 2;

the basalt mesh cloth composite material sequentially comprises a PVC surface film layer, a basalt mesh cloth layer and a PVC bottom film layer from top to bottom.

The third embodiment of the invention is as follows:

a preparation method of a basalt mesh cloth composite material comprises the following steps:

s1, sucking the short fibers remained on the surface of the basalt mesh cloth by using a dust suction device, ironing the basalt mesh cloth, soaking the basalt mesh cloth in the first paste for 20min, and drying at 150 ℃; the viscosity of the first paste is 3000 cps;

the first paste comprises 100 parts by weight of E-PVC resin, 80 parts by weight of DINP and 2.5 parts by weight of an E-PVC paste consisting of barium-zinc liquid stabilizer, and a PVC cross-linking agent accounting for 2% of the total mass of the E-PVC paste;

s2, coating the second paste on two sides of the basalt mesh cloth obtained in the step 1, and then drying at 150 ℃; the viscosity of the second paste is 20000 cps;

the second paste comprises an E-PVC paste consisting of 100 parts by weight of E-PVC, 65 parts by weight of DINP and 4 parts by weight of barium-zinc liquid stabilizer, and fumed silica accounting for 0.3 percent of the total mass of the E-PVC paste and a PVC cross-linking agent accounting for 6 percent of the total mass of the E-PVC paste;

s3, preheating the PVC surface film and the PVC base film at 175 ℃, and then attaching the PVC surface film and the PVC base film to two sides of the basalt mesh cloth obtained in the step 2;

the basalt mesh cloth composite material sequentially comprises a PVC surface film layer, a basalt mesh cloth layer and a PVC bottom film layer from top to bottom.

The fourth embodiment of the invention is as follows:

a preparation method of a basalt mesh cloth composite material comprises the following steps:

s1, sucking short fibers remained on the surface of the basalt mesh cloth by using a dust suction device, ironing the basalt mesh cloth, soaking the basalt mesh cloth in the first paste for 18min, and drying at 135 ℃; the viscosity of the first paste is 2500 cps; the composition of the first paste was the same as the first paste of example one;

s2, coating the second paste on two sides of the basalt mesh cloth obtained in the step 1, and then drying at 135 ℃; the viscosity of the second paste was 15000 cps; the composition of the second paste was the same as the second paste of example one;

s3, preheating the PVC face film and the PVC base film at 165 ℃ respectively, and then attaching the PVC face film and the PVC base film to two sides of the basalt mesh cloth obtained in the step 2;

the basalt mesh cloth composite material sequentially comprises a PVC surface film layer, a basalt mesh cloth layer and a PVC bottom film layer from top to bottom.

The fifth embodiment of the invention is as follows:

a preparation method of a basalt mesh cloth composite material comprises the following steps:

s1, sucking short fibers remained on the surface of the basalt mesh cloth by using a dust suction device, ironing the basalt mesh cloth, soaking the basalt mesh cloth in the first paste for 25min, and drying the basalt mesh cloth at 145 ℃; the viscosity of the first paste is 1500 cps; the composition of the first paste was the same as the first paste of example one;

s2, coating the second paste on two sides of the basalt mesh cloth obtained in the step 1, and then drying at 145 ℃; the viscosity of the second paste is 18000 cps; the composition of the second paste was the same as the second paste of example one;

s3, respectively carrying out preheating treatment at 170 ℃ on the PVC face film and the PVC base film, and then attaching the PVC face film and the PVC base film to two sides of the basalt mesh cloth obtained in the step 2;

the basalt mesh cloth composite material sequentially comprises a PVC surface film layer, a basalt mesh cloth layer and a PVC bottom film layer from top to bottom.

Comparative example one:

a preparation method of a basalt mesh cloth composite material comprises the following steps:

s1, sucking short fibers remained on the surface of the basalt mesh cloth by using a dust suction device;

s2, ironing the basalt mesh cloth, removing moisture, coating the second paste on two sides of the basalt mesh cloth, and drying at 150 ℃; the viscosity of the second paste was 12000 cps; the composition of the second paste was the same as the second paste of example one;

s3, respectively carrying out preheating treatment at 160 ℃ on the PVC face film and the PVC base film, and then attaching the PVC face film and the PVC base film to two sides of the basalt mesh cloth obtained in the step 2;

the basalt mesh cloth composite material sequentially comprises a PVC surface film layer, a basalt mesh cloth layer and a PVC bottom film layer from top to bottom.

Comparative example two:

a preparation method of a basalt mesh cloth composite material comprises the following steps:

s1, sucking short fibers remained on the surface of the basalt mesh cloth by using a dust suction device, ironing the basalt mesh cloth, removing moisture, soaking the basalt mesh cloth in the first paste for 5min, and drying the basalt mesh cloth at 130 ℃; the viscosity of the first paste was 2000 cps; the composition of the first paste was the same as the first paste of example one;

s2, coating the second paste on two sides of the basalt mesh cloth obtained in the step 1, and then drying at 150 ℃; the viscosity of the second paste was 12000 cps; the second paste is an E-PVC paste; the composition of the second paste was the same as the second paste of example one;

s3, respectively carrying out preheating treatment at 160 ℃ on the PVC face film and the PVC base film, and then attaching the PVC face film and the PVC base film to two sides of the basalt mesh cloth obtained in the step 2;

the basalt mesh cloth composite material sequentially comprises a PVC surface film layer, a basalt mesh cloth layer and a PVC bottom film layer from top to bottom.

Comparative example three:

a preparation method of a basalt mesh cloth composite material comprises the following steps:

s1, sucking short fibers remained on the surface of the basalt mesh cloth by using a dust suction device, ironing the basalt mesh cloth, soaking the basalt mesh cloth in the first paste for 30min, and drying at 130 ℃; the viscosity of the first paste was 2000 cps; the composition of the first paste was the same as the first paste of example one;

s2, soaking the basalt mesh cloth obtained in the step 1 in the second paste for 2min, and then drying at 150 ℃; the viscosity of the second paste was 12000 cps; the composition of the second paste was the same as the second paste of example one;

s3, respectively carrying out preheating treatment at 160 ℃ on the PVC face film and the PVC base film, and then attaching the PVC face film and the PVC base film to two sides of the basalt mesh cloth obtained in the step 2;

the basalt mesh cloth composite material sequentially comprises a PVC surface film layer, a basalt mesh cloth layer and a PVC bottom film layer from top to bottom.

Comparative example four:

the carbon fiber composite material sequentially comprises a PVC surface film layer, a carbon fiber net cloth layer and a PVC bottom film layer from top to bottom.

The basalt mesh cloth composite materials of examples one to five and comparative examples one to four, and the carbon fiber composite material were tested for peeling property and elongation, and the surface flatness thereof, and whether or not bubbles were generated were observed, and the results are shown in table 1.

TABLE 1

	Peel strength	Elongation percentage	Surface state
				Example one	85N/5cm	5.3％	No bubble, smooth
Example two	92N/5cm	4.5％	No bubble, smooth
				EXAMPLE III	96N/5cm	4.2％	No bubble, smooth
Example four	83N/5cm	5.5％	No bubble, smooth
				EXAMPLE five	87N/5cm	4.9％	No bubble, smooth
Comparative example 1	51N/5cm	6.0％	Large amount of bubbles, unevenness
				Comparative example No. two	67N/5cm	5.8％	A small amount of bubbles, and is relatively flat
Comparative example No. three	85N/5cm	5.6％	More bubbles and roughness
				Comparative example No. four	83N/5cm	3.9％	No bubble, smooth

The elongation of the basalt mesh cloth composite material prepared by the preparation method provided by the invention is only 4-6%, which is equivalent to 3-5% (commercially available material) of a carbon fiber composite material, but because the basalt mesh cloth is low in price and easy to obtain, the cost required by the preparation method is only 1/3-1/5 of the carbon fiber composite material, and the basalt mesh cloth composite material has higher economic value.

In conclusion, the basalt mesh cloth is used as the base cloth in the preparation method of the basalt mesh cloth composite material, the prepared composite material with the elongation rate of only 4-6% is far lower than that of the common polyester composite material by more than 20%, so that the preparation method can meet the preparation requirements of products with severe size change requirements, and is very suitable for preparing inflatable products with small size change requirements;

the preparation method provided by the invention adopts the method of soaking by using the low-viscosity paste and coating by using the high-viscosity paste in the preparation process, so that the low-viscosity paste can penetrate through the base cloth, the flexibility of the basalt mesh cloth is improved, the brittleness is reduced, a foundation is provided for the attachment of the subsequent high-viscosity paste, the viscosity of the second paste is higher, the second paste can be better attached to the surface of the basalt mesh cloth by using the coating method, the problems that the basalt mesh cloth is poor in bonding stripping strength with a resin film and is not easy to use for preparing the mesh cloth composite material are further solved, the obtained basalt mesh cloth composite material has good stripping strength and is smooth in surface and free of bubbles, meanwhile, the raw material of the basalt mesh cloth is easy to obtain and low in cost, the cost for preparing the same plain basalt mesh cloth is only 1/3-1/5 of the carbon fiber composite material, and the civil requirements of large batch, low cost and high quality can be met, has extremely high economic value.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent modifications made by the present invention in the specification or directly or indirectly applied to the related technical field are included in the scope of the present invention.