阅读说明：本技术 一种高阻燃性耐高温玻璃钢格栅及其制备方法 (High-flame-retardancy high-temperature-resistant glass fiber reinforced plastic grid and preparation method thereof ) 是由 周雪 于 2020-12-16 设计创作，主要内容包括：本发明涉及一种高阻燃性耐高温玻璃钢格栅,所述的玻璃钢格栅从内到外依次包括玻璃钢格栅积层、夹砂增强保护层和外缠绕阻燃耐高温保护层。本发明还提供该高阻燃性耐高温玻璃钢格栅的制备方法。本发明的玻璃钢格栅,设置外缠绕阻燃耐高温保护层涂布层,使得玻璃钢格栅具有阻燃耐高温性能；其中间层设置夹砂增强保护层,不仅能增加玻璃钢格栅的硬度和强度,且还具有良好的防腐性能、耐磨性、韧弹性好的特点。(The invention relates to a high-flame-retardancy high-temperature-resistant glass fiber reinforced plastic grating which sequentially comprises a glass fiber reinforced plastic grating lamination layer, a sand inclusion reinforced protective layer and an externally wound flame-retardancy high-temperature-resistant protective layer from inside to outside. The invention also provides a preparation method of the high-flame-retardance high-temperature-resistant glass fiber reinforced plastic grid. According to the glass fiber reinforced plastic grating, the coating layer is externally wound with the flame-retardant high-temperature-resistant protective layer, so that the glass fiber reinforced plastic grating has flame-retardant high-temperature-resistant performance; the interlayer is provided with the sand inclusion reinforced protective layer, which not only can increase the hardness and strength of the glass fiber reinforced plastic grid, but also has the characteristics of good corrosion resistance, wear resistance and toughness and elasticity.)

1. The high-flame-retardancy high-temperature-resistant glass fiber reinforced plastic grating is characterized by sequentially comprising a glass fiber reinforced plastic grating lamination layer, a sand inclusion reinforced protective layer and an outer winding flame-retardancy high-temperature-resistant protective layer from inside to outside.

2. A preparation method of a high-flame-retardant high-temperature-resistant glass fiber reinforced plastic grid is characterized by comprising the following steps: the method comprises the following steps:

(1) preparing a mould, cleaning the interior of a glass fiber reinforced plastic grid mould according to a conventional process, and coating a demoulding material;

(2) preparing a base material, namely putting bisphenol A epoxy vinyl resin, flame-retardant resin, aluminum hydroxide and a reinforcer into a stirring kettle, mixing and stirring, and keeping for 1-1.5 hours;

(3) laminating the glass fiber reinforced plastic grating, paving the glass fiber reinforced plastic laminated layer according to the layer design, uniformly brushing and extruding the base material obtained in the step (2) into a mold, and repeating the operation until the preset layer number is finished;

(4) setting a sand inclusion reinforced protective layer, curing the step (3), and demoulding to obtain a glass fiber reinforced plastic grating base layer, wherein the glass fiber reinforced plastic grating base layer is immersed in the plastic stock solution for 15-40 min to form the sand inclusion reinforced protective layer, and then drying the sand inclusion reinforced protective layer at the temperature of 30-60 ℃;

(5) coating an externally-wound flame-retardant high-temperature-resistant protective layer, namely soaking unsaturated flame-retardant polyester resin by using glass fiber yarns and uniformly winding the unsaturated flame-retardant polyester resin outside the sand-inclusion reinforced protective layer obtained in the step (4) to form the externally-wound flame-retardant high-temperature-resistant protective layer;

(6) and curing and finishing to form the glass fiber reinforced plastic grating with the sand-sandwiched layer.

3. The method for preparing a high flame-retardant high temperature-resistant glass fiber reinforced plastic grid according to claim 2, wherein the method comprises the following steps: the mass percentages of the bisphenol A epoxy vinyl resin, the flame-retardant resin, the aluminum hydroxide and the reinforcing agent in the step (2) are 9-11: 2-5: 4-6: 0.5 to 2.

4. The method for preparing a high flame-retardant high temperature-resistant glass fiber reinforced plastic grid according to claim 2, wherein the method comprises the following steps: the strengthening agent in the step (2) is a silane type coupling agent.

5. The method for preparing a high flame-retardant high temperature-resistant glass fiber reinforced plastic grid according to claim 2, wherein the method comprises the following steps: in the step (4), the plastic stock solution is prepared from unsaturated flame-retardant polyester resin and quartz sand according to the mass percentage of 5-14: 8-10.

6. The method for preparing a high flame-retardant high temperature-resistant glass fiber reinforced plastic grid according to claim 2, wherein the method comprises the following steps: the step (5) also comprises a reinforcing agent, an ultraviolet absorbent and a pigment.

7. The method for preparing a high flame-retardant high temperature-resistant glass fiber reinforced plastic grid according to claim 6, wherein the method comprises the following steps: the reinforcing agent is a coupling agent.

Technical Field

The invention relates to the technical field of glass fiber reinforced plastic gratings, in particular to a high-flame-retardancy high-temperature-resistant glass fiber reinforced plastic grating and a preparation method thereof.

Background

The glass fiber reinforced plastic grating is also named as a glass fiber reinforced plastic grating, is a plate-shaped material with a plurality of blank spaces, which is compounded by using glass fiber as a reinforcing material and unsaturated polyester resin as a matrix through special processing, and can be used as a structural material and used as a floor, a trench cover plate, a platform, a naval vessel deck, a stair, a trestle and the like in a corrosive environment. The flame-retardant anti-corrosion.

The glass fiber reinforced plastic grilles on the market are mostly phenolic aldehyde grilles, and because the glass fiber reinforced plastic grilles are mostly used outdoors, when a fire disaster happens, the glass fiber reinforced plastic grilles can aggravate the spread of the fire disaster and generate a large amount of black smoke. In addition, because the softening point of the common glass fiber is lower than 880 ℃, when the ambient temperature exceeds the softening point of the common glass fiber, the glass fiber can completely lose the due mechanical strength due to softening, namely if the common glass fiber is used as a reinforcing material of the phenolic grid, the phenolic grid can completely lose the due mechanical property and strength under the combustion condition due to the limitation of the softening point of the glass fiber, and even under the condition of no load, the phenolic grid can be broken due to the action of gravity.

Disclosure of Invention

The invention aims to solve the defects of the prior art and provide the high-temperature resistant glass fiber reinforced plastic grid with high strength, flame retardance and high strength; the invention also provides a preparation method of the glass fiber reinforced plastic grid.

The technical scheme adopted by the invention is as follows: the glass fiber reinforced plastic grating sequentially comprises a glass fiber reinforced plastic grating lamination layer, a sand inclusion reinforced protective layer and an outer winding flame-retardant high-temperature-resistant protective layer from inside to outside.

A preparation method of a high-flame-retardant high-temperature-resistant glass fiber reinforced plastic grid comprises the following steps:

(1) preparing a mould, cleaning the interior of a glass fiber reinforced plastic grid mould according to a conventional process, and coating a demoulding material;

(2) preparing a base material, namely putting bisphenol A epoxy vinyl resin, flame-retardant resin, aluminum hydroxide and a reinforcer into a stirring kettle, mixing and stirring, and keeping for 1-1.5 hours;

(3) laminating the glass fiber reinforced plastic grating, paving the glass fiber reinforced plastic laminated layer according to the layer design, uniformly brushing and extruding the base material obtained in the step (2) into a mold, and repeating the operation until the preset layer number is finished;

(4) setting a sand inclusion reinforced protective layer, curing the step (3), and demoulding to obtain a glass fiber reinforced plastic grating base layer, immersing the glass fiber reinforced plastic grating base layer into a plastic stock solution for 15-40 min to form the sand inclusion reinforced protective layer, and drying at the temperature of 30-60 ℃;

(5) coating an externally-wound flame-retardant high-temperature-resistant protective layer, namely soaking unsaturated flame-retardant polyester resin by using glass fiber yarns and uniformly winding the unsaturated flame-retardant polyester resin outside the sand-inclusion reinforced protective layer obtained in the step (4) to form the externally-wound flame-retardant high-temperature-resistant protective layer;

(6) and curing and finishing to form the glass fiber reinforced plastic grating with the sand-sandwiched layer.

Preferably, in the step (2), the bisphenol A epoxy vinyl resin, the flame retardant resin, the aluminum hydroxide and the reinforcing agent are 9-11 mass percent: 2-5: 4-6: 0.5 to 2.

Preferably, the strengthening agent in the step (2) is a silane type coupling agent.

Preferably, in the step (4), the plastic stock solution is prepared from unsaturated flame-retardant polyester resin and quartz sand according to the mass percentage of 5-14: 8-10.

Preferably, the step (5) further comprises a reinforcing agent, an ultraviolet absorbent and a pigment.

Preferably, the reinforcing agent is a coupling agent.

Compared with the prior art, the invention has the following advantages:

1. the glass fiber reinforced plastic grid is provided with the coating layer externally wound with the flame-retardant high-temperature-resistant protection layer, the coating layer externally wound with the flame-retardant high-temperature-resistant protection layer is formed by soaking unsaturated flame-retardant polyester resin with flame retardant property with glass fiber yarns, and uniformly winding the unsaturated flame-retardant polyester resin outside the sand inclusion reinforced protection layer, so that the glass fiber reinforced plastic grid has the flame-retardant high-temperature-resistant property.

2. According to the glass fiber reinforced plastic grating, the sand inclusion reinforced protective layer is arranged in the middle layer, so that the hardness and the strength of the glass fiber reinforced plastic grating can be increased, and the glass fiber reinforced plastic grating has the characteristics of good corrosion resistance, good wear resistance and good toughness and elasticity.

The specific implementation mode is as follows:

in order to enhance the understanding of the present invention, the present invention will be described in further detail with reference to embodiments. The invention can be implemented by:

example 1

A preparation method of a high-flame-retardant high-temperature-resistant glass fiber reinforced plastic grid comprises the following steps:

(1) preparing a mould, cleaning the interior of a glass fiber reinforced plastic grid mould according to a conventional process, and coating a demoulding material;

(2) preparing a base material, namely putting bisphenol A epoxy vinyl resin, flame-retardant resin, aluminum hydroxide and a reinforcer into a stirring kettle, mixing and stirring for 1.5 hours, wherein the mass percentage of the bisphenol A epoxy vinyl resin, the flame-retardant resin, the aluminum hydroxide and the reinforcer is 10: 3: 5: 1.5, wherein the reinforcing agent is a silane type coupling agent;

(3) laminating the glass fiber reinforced plastic grating, paving the glass fiber reinforced plastic laminated layer according to the layer design, uniformly brushing and extruding the base material obtained in the step (2) into a mold, and repeating the operation until the preset layer number is finished;

(4) setting a sand inclusion reinforcing protective layer, curing the step (3), and soaking the glass fiber reinforced plastic grating base layer obtained after demolding into plastic stock solution for 30min to form the sand inclusion reinforcing protective layer, and then drying the sand inclusion reinforcing protective layer at 50 ℃, wherein the plastic stock solution is prepared from unsaturated polyester resin or epoxy resin and quartz sand according to the mass percentage of 9: 10, premixing to prepare the product;

(5) coating an externally-wound flame-retardant high-temperature-resistant protective layer, namely soaking unsaturated flame-retardant polyester resin by using glass fiber yarns and uniformly winding the unsaturated flame-retardant polyester resin outside the sand-inclusion reinforced protective layer obtained in the step (4) to form the externally-wound flame-retardant high-temperature-resistant protective layer;

(6) and curing and finishing to form the glass fiber reinforced plastic grating with the sand-sandwiched layer.

Example 2

A preparation method of a high-flame-retardant high-temperature-resistant glass fiber reinforced plastic grid comprises the following steps:

(1) preparing a mould, cleaning the interior of a glass fiber reinforced plastic grid mould according to a conventional process, and coating a demoulding material;

(2) preparing a base material, namely putting bisphenol A epoxy vinyl resin, flame-retardant resin, aluminum hydroxide and a reinforcer into a stirring kettle, mixing and stirring for 1.5 hours, wherein the mass percentage of the bisphenol A epoxy vinyl resin, the flame-retardant resin, the aluminum hydroxide and the reinforcer is 10: 2: 5: 1.5, wherein the reinforcing agent is a silane type coupling agent;

(3) laminating the glass fiber reinforced plastic grating, paving the glass fiber reinforced plastic laminated layer according to the layer design, uniformly brushing and extruding the base material obtained in the step (2) into a mold, and repeating the operation until the preset layer number is finished;

(4) setting a sand inclusion reinforcing protective layer, curing the step (3), and soaking the glass fiber reinforced plastic grating base layer obtained after demolding into a plastic stock solution for 30min to form the sand inclusion reinforcing protective layer, and then drying the sand inclusion reinforcing protective layer at the temperature of 50 ℃, wherein the plastic stock solution is prepared from unsaturated polyester resin or epoxy resin and quartz sand according to the mass percentage of 9: 10, premixing to prepare the product;

(5) and (4) coating the externally-wound flame-retardant high-temperature-resistant protective layer, namely soaking unsaturated flame-retardant polyester resin in a reinforcing agent, an ultraviolet absorbent, a pigment and glass fiber yarns to uniformly wind the outside of the sand-inclusion reinforced protective layer obtained in the step (4) to form the externally-wound flame-retardant high-temperature-resistant protective layer. Wherein the reinforcing agent is a coupling agent;

(6) and curing and finishing to form the glass fiber reinforced plastic grating with the sand-sandwiched layer.

Finally, it should be noted that: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.