Waterproof and fireproof glass fiber composite board for automobile interior and production process

Abstract

The present invention provides a waterproof and fireproof glass fiber composite board for automobile interior decoration and a production process, which specifically relates to the field of automobile interior decoration boards, and is composed of 8-11 parts by mass of air-dried hemp fiber felt, 8-11 parts by mass of glass fiber, 18-22 parts by mass of polyurethane, 1 part by mass of magnesium hydroxide powder, and 1 part by mass of polyacrylate. The polyacrylate is added into water to prepare an adhesive with a volume concentration of 20%; the magnesium hydroxide powder is added into vinyl tri(β-methoxyethoxy) silane and mixed evenly to obtain a flame retardant liquid; the flame retardant liquid and the adhesive are mixed to obtain a mixed liquid, the hemp fiber felt is immersed in the mixed liquid, and the mixed liquid is taken out and pressed and air-dried; the air-dried hemp fiber felt and glass fiber are put into a mixer; polyurethane particles, magnesium hydroxide powder, and polyacrylate are added; a mixed raw material is obtained; the mixed raw material is put into a mold coated with a release agent; a composite board with a thickness of 4 mm is obtained; the board prepared by the present invention has good waterproof and fireproof properties and high strength.

Description

Technical Field

[0001] The invention belongs to the field of automobile interior decoration panels, and in particular relates to an automobile interior waterproof and fireproof glass fiber composite panel and a production process. Background Art

[0002] Interior panels are used for decoration in cars and are commonly found in car doors, roofs, and other places. They not only beautify the interior space, but also enhance the overall aesthetics; they also have a certain protective effect on the interior and body of the car. For example, the interior lining of a car can isolate mud and sand, reduce wind resistance, isolate chassis noise, prevent mud and sand from entering the engine compartment, and reduce the impact of noise and wind resistance on vehicle performance.

[0003] There are many kinds of existing automobile interior panels. With the improvement of people's safety awareness, the requirements for automobile interior panels are getting higher and higher. Waterproof and fireproof interior panels are one of the main research and development hotspots; however, the performance of existing waterproof and fireproof interior panels still needs to be improved; the patent with application number CN201511019308.1 discloses a new type of fireproof interior panel and its preparation method; the fireproof interior panel uses a blending agent to replace the finished magnesium chloride, which greatly reduces the manufacturing cost and makes full use of the magnesium chloride discharged by the salt chemical enterprise, which not only recycles the waste but also reduces the amount discharged into the sea. It has excellent fireproof performance and can reach fireproof grade A. It has no pollution to the air of the decorated room and no radioactivity. The mechanical strength and other properties can meet the use requirements; however, in actual tests, its fireproof performance has not yet reached a satisfactory standard;

[0004] In view of the above-mentioned deficiencies, there is a need for a waterproof and fireproof glass fiber composite board for automobile interior and a production process, and the prepared interior board has good waterproof and fireproof properties and high strength. Summary of the invention

[0005] The purpose of the present invention is to provide a waterproof and fireproof glass fiber composite board for automobile interior decoration and a production process, wherein the prepared interior decoration board has good waterproof and fireproof properties and high strength.

[0006] The present invention provides the following technical solutions:

[0007] A waterproof and fireproof glass fiber composite board for automobile interior, comprising 8-11 parts by weight of air-dried hemp fiber felt, 8-11 parts by weight of glass fiber, 18-22 parts by weight of polyurethane, 1 part by weight of magnesium hydroxide powder, and 1 part by weight of polyacrylate;

[0008] Preferably, 10 parts by mass of air-dried hemp fiber felt, 10 parts by mass of glass fiber, and 20 parts by mass of polyurethane;

[0009] A preparation process of a waterproof and fireproof glass fiber composite board for automobile interior is as follows:

[0010] S1. Take polyacrylate and add it into water to prepare an adhesive with a volume concentration of 20%;

[0011] S2. Add 200-240 g of magnesium hydroxide powder into 1 L of vinyl tri(β-methoxyethoxy)silane and mix well to obtain a flame retardant liquid;

[0012] S3, mixing the flame retardant liquid and the adhesive in a volume ratio of 2 to 4:1 to obtain a mixed solution, immersing the hemp fiber felt in the mixed solution for 18 to 22 minutes, taking it out, pressing it, and air-drying it;

[0013] S4, 8-11 parts by weight of air-dried hemp fiber felt and 8-11 parts by weight of glass fiber are placed in a mixer, preheated to 160-190° C., and then the machine is operated;

[0014] S5, adding 18-22 parts by mass of polyurethane particles, 1 part by mass of magnesium hydroxide powder, and 1 part by mass of polyacrylate to obtain a mixed raw material;

[0015] S6. Put the mixed raw materials into a mold coated with a release agent; pressurize the mold to 15-25Mpa, and set the mold temperature to 200-240 degrees Celsius; the molding time is 4-6 minutes, and a composite plate with a thickness of 4 mm is obtained.

[0016] Preferably, in step S2, 220 g of magnesium hydroxide powder is added to 1 L of vinyl tri(β-methoxyethoxy)silane and mixed evenly to obtain a flame retardant liquid.

[0017] Preferably, in step S3, the flame retardant liquid and the adhesive are mixed in a volume ratio of 3:1 to obtain a mixed solution, the hemp fiber felt is immersed in the mixed solution for 20 minutes, taken out, pressed, and air-dried;

[0018] Preferably, in step S4, 10 parts by mass of air-dried hemp fiber felt and 10 parts by mass of glass fiber are put into a mixer and preheated to 175° C.;

[0019] Preferably, in step S5, 20 parts by mass of polyurethane particles, 1 part by mass of magnesium hydroxide powder, and 1 part by mass of polyacrylate are added; when the material has uniform color, flat cross-section, and gloss and strength on the surface, a mixed raw material is obtained;

[0020] Preferably, in step S6, the mixed raw material is placed in a mold coated with a release agent; the mold is pressurized to 20 MPa and the mold temperature is 220 degrees Celsius; the molding time is 5 minutes, and a composite plate with a thickness of 4 mm is obtained.

[0021] Beneficial effects of the present invention:

[0022] 1. The composite plate prepared by the present invention can reduce product density, meet the demand for lightweight, have good ductility, aging resistance and corrosion resistance,

[0023] 2. The composite board prepared by the present invention through appropriate raw material ratio, selection of appropriate molding temperature, molding pressure, and molding time has good environmental protection, and has good waterproof and flame retardant properties. DETAILED DESCRIPTION

[0024] Example 1

[0025] A waterproof and fireproof glass fiber composite board for automobile interior, composed of 800 grams of air-dried hemp fiber felt, 800 grams of glass fiber, 1800 grams of polyurethane, 100 grams of magnesium hydroxide powder, and 100 grams of polyacrylate;

[0026] A preparation process of a waterproof and fireproof glass fiber composite board for automobile interior is as follows:

[0027] S1. Take polyacrylate and add it to water to prepare an adhesive with a volume concentration of 20%; S2. Add 200g of magnesium hydroxide powder to 1L of vinyl tri(β-methoxyethoxy) silane and mix evenly to obtain a flame retardant liquid; S3. Mix the flame retardant liquid and the adhesive in a volume ratio of 2:1 to obtain a mixed solution, immerse the hemp fiber felt in the mixed solution for 18 minutes, take it out and press it, and then air-dry it; S4. Put 800g of air-dried hemp fiber felt and 800g of glass fiber into a mixer, preheat it to 160℃, and then run the machine; S5. Add 1800g of polyurethane particles, 100g of magnesium hydroxide powder, and 100g of polyacrylate; when the material has uniform color, flat cross-section, and gloss and strength on the surface, a mixed raw material is obtained; S6. Put the mixed raw material into a mold coated with a release agent; the mold is pressurized at 15Mpa and the mold temperature is 200 degrees Celsius; the molding time is 4 minutes, and a composite board with a thickness of 4 mm is obtained.

[0028] Example 2

[0029] A waterproof and fireproof glass fiber composite board for automobile interior, composed of 1000 grams of air-dried hemp fiber felt, 1000 grams of glass fiber, 2000 grams of polyurethane, 100 grams of magnesium hydroxide powder, and 100 grams of polyacrylate;

[0030] A preparation process of a waterproof and fireproof glass fiber composite board for automobile interior is as follows:

[0031] S1. Take polyacrylate and add it into water to prepare an adhesive with a volume concentration of 20%; S2. Add 220g of magnesium hydroxide powder into 1L of vinyl tri(β-methoxyethoxy) silane and mix evenly to obtain a flame retardant liquid; S3. Mix the flame retardant liquid and the adhesive in a volume ratio of 3:1 to obtain a mixed solution, immerse the hemp fiber felt in the mixed solution for 20 minutes, take it out and press it, and then air-dry it; S4. Put 1000g of air-dried hemp fiber felt and 1000g of glass fiber into a mixer, preheat it to 175°C, and then run the machine; S5. Add 2000g of polyurethane particles, 100g of magnesium hydroxide powder, and 100g of polyacrylate; when the material has uniform color, flat cross-section, and gloss and strength on the surface, the mixed raw material is obtained;

[0032] S6. Put the mixed raw materials into a mold coated with a release agent; pressurize the mold to 20 MPa and set the mold temperature to 220 degrees Celsius; the molding time is 5 minutes, and a composite plate with a thickness of 4 mm is obtained.

[0033] Example 3

[0034] A waterproof and fireproof glass fiber composite board for automobile interior, composed of 1100 grams of air-dried hemp fiber felt, 1100 grams of glass fiber, 2200 grams of polyurethane, 100 grams of magnesium hydroxide powder, and 100 grams of polyacrylate;

[0035] A preparation process of a waterproof and fireproof glass fiber composite board for automobile interior is as follows:

[0036] S1. Take polyacrylate and add it into water to prepare an adhesive with a volume concentration of 20%; S2. Add 240g of magnesium hydroxide powder to 1L of vinyl tri(β-methoxyethoxy) silane and mix evenly to obtain a flame retardant liquid; S3. Mix the flame retardant liquid and the adhesive in a volume ratio of 4:1 to obtain a mixed solution, immerse the hemp fiber felt in the mixed solution for 22 minutes, take it out and press it, and then air-dry it; S4. Put 1100 grams of air-dried hemp fiber felt and 1100 grams of glass fiber into a mixer, preheat it to 190°C, and then run the machine; S5. Add 2200 grams of polyurethane particles, 100 grams of magnesium hydroxide powder, and 100 grams of polyacrylate; when the material has uniform color, flat cross-section, and gloss and strength on the surface, a mixed raw material is obtained; S6. Put the mixed raw material into a mold coated with a release agent; the mold is pressurized at 25Mpa and the mold temperature is 240 degrees Celsius; the molding time is 6 minutes, and a composite board with a thickness of 4 mm is obtained.

[0037] Experimental data:

[0038] The control group is a commercially available plate. The plates of Examples 1-3 are used in experiments with the control group. The plates prepared by the present invention have good aging resistance and corrosion resistance, high strength, and good waterproof and fire resistance.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A waterproof and fireproof glass fiber composite board for automobile interior, characterized by: The invention comprises 8-11 parts by weight of air-dried hemp fiber felt, 8-11 parts by weight of glass fiber, 18-22 parts by weight of polyurethane, 1 part by weight of magnesium hydroxide powder and 1 part by weight of polyacrylate.

2. The waterproof and fireproof glass fiber composite board for automobile interior according to claim 1, characterized in that: 10 parts by mass of air-dried hemp fiber felt, 10 parts by mass of glass fiber, and 20 parts by mass of polyurethane.

3. The automotive interior waterproof and fireproof glass fiber composite board according to claim 1, wherein the production process is characterized by: Here are the steps: S1. Take polyacrylate and add it to water to prepare an adhesive with a volume concentration of 20%; S2. Add 200-240 g of magnesium hydroxide powder into 1 L of vinyl tri(β-methoxyethoxy)silane and mix well to obtain a flame retardant liquid; S3, mixing the flame retardant liquid and the adhesive in a volume ratio of 2 to 4:1 to obtain a mixed solution, immersing the hemp fiber felt in the mixed solution for 18 to 22 minutes, taking it out, pressing it, and air-drying it; S4, 8-11 parts by weight of air-dried hemp fiber felt and 8-11 parts by weight of glass fiber are placed in a mixer, preheated to 160-190° C., and then the machine is operated; S5, adding 18-22 parts by mass of polyurethane particles, 1 part by mass of magnesium hydroxide powder, and 1 part by mass of polyacrylate to obtain a mixed raw material; S6. Put the mixed raw materials into a mold coated with a release agent; pressurize the mold to 15-25Mpa, and set the mold temperature to 200-240 degrees Celsius; the molding time is 4-6 minutes, and a composite plate with a thickness of 4 mm is obtained.

4. The process for producing a waterproof and fireproof glass fiber composite board for automobile interior decoration according to claim 3, characterized in that: In step S2, 220 g of magnesium hydroxide powder is added to 1 L of vinyl tri(β-methoxyethoxy)silane and mixed evenly to obtain a flame retardant liquid.

5. The process for producing a waterproof and fireproof glass fiber composite board for automobile interior decoration according to claim 3, characterized in that: In step S3, the flame retardant liquid and the adhesive are mixed in a volume ratio of 3:1 to obtain a mixed liquid, the hemp fiber felt is immersed in the mixed liquid for 20 minutes, taken out, pressed, and then air-dried.

6. The process for producing a waterproof and fireproof glass fiber composite board for automobile interior decoration according to claim 3, characterized in that: In step S4, 10 parts by mass of air-dried hemp fiber felt and 10 parts by mass of glass fiber are put into a mixer and preheated to 175°C.

7. The process for producing a waterproof and fireproof glass fiber composite board for automobile interior decoration according to claim 3, characterized in that: In step S5, 20 parts by mass of polyurethane particles, 1 part by mass of magnesium hydroxide powder, and 1 part by mass of polyacrylate are added; when the material has uniform color, flat cross section, and gloss and strength on the surface, the mixed raw material is obtained.

8. The process for producing a waterproof and fireproof glass fiber composite board for automobile interior decoration according to claim 3, characterized in that: In step S6, the mixed raw materials are placed in a mold coated with a release agent; the mold is pressurized to 20 MPa and the mold temperature is 220 degrees Celsius; the molding time is 5 minutes, and a composite plate with a thickness of 4 mm is obtained.