Flame-retardant automobile foot mat material and manufacturing method thereof

Abstract

The invention discloses a flame-retardant automobile foot mat material and a manufacturing method thereof, and relates to the technical field of automobile foot mats, and the manufacturing method comprises the following steps: firstly, preparing modified magnesium hydroxide powder and aluminum hydroxide powder; the preparation method comprises the following steps: respectively drying SEBS and polypropylene in a drying box, adding naphthenic oil in a certain proportion, heating, stirring at a constant speed, uniformly mixing, and fully mixing with quantitative SEBS, so that the naphthenic oil can be fully swelled into the SEBS to prepare a mixture; the preparation method comprises the following steps: adding polypropylene according to a ratio, weighing the modified flame retardant and other assistants according to a corresponding mass, mixing together, uniformly stirring at a high speed, adding into a twin-screw extruder for extrusion, pressing into sheets with various thicknesses on a flat plate, finally cutting into sample strips with different experimental standard sizes, and detecting the performance of the product. As magnesium hydroxide is added as a flame retardant synthetic material, the flame-retardant automobile foot mat material has the characteristics of no halogen, low smoke, no toxicity, drop resistance, acid resistance, odorlessness, good stability, no volatilization, high decomposition temperature, no corrosion to equipment and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive floor mats, and specifically refers to a flame-retardant automotive floor mat material and a manufacturing method thereof. Background Art

[0002] With the development of modern life, the number of cars is increasing continuously. Automotive floor mats have become an essential item, and their functions and roles in cars are becoming more and more important. In the past, automotive floor mats were an environmentally friendly automotive interior part that integrated five main functions: water absorption, dust absorption, dirt removal, sound insulation, and protection of the main carpet. They belong to the decorations inside the car and can play a role in beautifying and making it comfortable.

[0003] Since the invention of automotive floor mats, their main functions have been water absorption, dust absorption, and dirt removal. This can effectively prevent the moisture and dirt remaining on the soles from causing slippage between the clutch, brake, and accelerator, avoid potential safety hazards, and reduce the possibility of the interior being contaminated and damaged. After all, it is more convenient and economical to clean the floor mat than to clean the interior. Moreover, the thick bottom material can block the chassis noise and tire noise, improving driving comfort. The suede-like automotive floor mats can also completely absorb the remaining noise and the echo of the in-car audio, protecting the hearing from damage. Currently, the classification of automotive floor mats on the market is as follows:

[0004] Classification by function: 1. Special car floor mats, 2. Universal floor mats;

[0005] Classification by shape: 1. Flat floor mats, 2. Three-dimensional floor mats;

[0006] Classification by process: 1. Handmade floor mats, 2. Machine-woven floor mats, 3. Machine-injected floor mats;

[0007] Classification by material: 1. Chemical fiber floor mats, 2. Flax floor mats, 3. PVC floor mats, 4. Rubber floor mats, 5. Woolen floor mats, 6. Leather floor mats, 7. PVC floor mats, 8. High-temperature heat insulation and fire prevention cotton.

[0008] Advantages and disadvantages of traditional floor mats:

[0009] Chemical fiber floor mats:

[0010] Advantages: The only original supporting material floor mats selected by automobile factories, with good moth resistance and corrosion resistance, are environmentally friendly products, with exquisite materials, beautiful and high-grade. They can give full play to functions such as water absorption, dust absorption, dirt removal, sound insulation, and protection of the main carpet. Disadvantages: High price.

[0011] Flax floor mats:

[0012] Advantages are low price. Disadvantages: It feels relatively soft, is prone to fuzzing after cleaning, and will deform after being cleaned several times, resulting in the surface of the floor mat sinking deeply when stepped on, affecting comfort. It is recommended to replace it frequently to avoid slippage.

[0013] PVC floor mats (or plastic floor mats):

[0014] Advantages: easy to clean. Disadvantages: tend to harden in winter, may slide, the quality of raw materials of some products is uncontrollable, and they have a strong smell. There is also a kind of spray fiber floor mat (loop pile floor mat) made of PVC material, which is very difficult to clean when debris and dust enter, and the price is high.

[0015] Rubber floor mats:

[0016] Like plastic floor mats, rubber floor mats are very convenient to clean. Rubber texture floor mats are not so easy to deform under large temperature changes and are suitable for use in winter and summer. The disadvantage is that they have a strong smell.

[0017] Woolen floor mats:

[0018] There are two types: flannelette and pure wool. Handmade products, generally with a high price and not easy to maintain.

[0019] Leather floor mats:

[0020] Soft, comfortable, beautiful and durable. For example, three-dimensional floor mats are convenient to clean. The disadvantages are that they do not absorb water or dust, have poor sound insulation, and the price is high.

[0021] Traditional automotive floor mat materials such as chemical fiber, linen, PVC, rubber, woolen, leather, etc. will all become accelerants for car fires. New contradictions will always give rise to new demands. Under the current circumstances, the functions of traditional automotive floor mats have also changed from water absorption, dust absorption, stain prevention, and comfort to the new function of flame retardancy rather than assisting combustion. One word difference may lead to a huge difference in situations. Traditional automotive floor mat materials are also changing with each passing day along with the development of materials science.

[0022] Since the development of automotive floor mats to date, the disadvantage of traditional materials is that they lack flame retardant effect and instead have an accelerating combustion effect. Most TPE materials are modified with halogen-containing raw materials, considering the flame retardant effect but ignoring the utility of suppressing smoke. When burning, they will produce a large amount of toxic and harmful smoke, threatening the safety of people in the car and affecting the rescue progress.

[0023] Currently, the invention patent with the application number CN201811417467 discloses a flame retardant modified automotive floor mat material and its preparation method. The added flame retardant consists of antimony trioxide and ammonium octamolybdate, and a small amount of sodium hydroxide and magnesium hydroxide are added. The disadvantages of adding such halides, antimony trioxide and other flame retardant synergists are that they produce toxic and corrosive halides when burning, with a large amount of smoke, causing people to be poisoned and making evacuation difficult; although ammonium octamolybdate has a certain effect of suppressing smoke, it will release a large amount of oxygen when thermally decomposed, accelerating the surrounding combustion reaction, and there is a certain risk, so it is not an ideal flame retardant.

[0024] Therefore, a low-smoke and halogen-free flame-retardant automotive floor mat and its manufacturing method have become problems that people urgently need to solve. Summary of the Invention

[0025] The technical problem to be solved by the present invention is based on compounds such as SEBE and polyethylene, with magnesium hydroxide and aluminum hydroxide as flame-retardant components. First, by modifying magnesium hydroxide, the disadvantages of its high surface free energy, strong polarity, and easy agglomeration are solved, making its surface hydrophobic, and improving the compatibility between magnesium hydroxide and the polymer, thereby obtaining a floor mat material with low-smoke flame retardancy and excellent performance.

[0026] To solve the above technical problems, the technical solution provided by the present invention is: a flame-retardant automotive floor mat material, comprising the following raw materials in parts by mass, 20-50 parts of SEBS, 10-30 parts of polypropylene, 20-50 parts of naphthenic oil, 0.5-2 parts of silane coupling agent, 30-65 parts of absolute ethanol, 0.1-0.5 parts of hydrochloric acid solution, 40-65 parts of magnesium hydroxide, 2-6 parts of charring agent, 0.2-0.6 parts of antioxidant, and 0.5-2 parts of lubricant.

[0027] Further, it comprises the following raw materials in parts by mass, 30 parts of SEBS, 20 parts of polypropylene, 20 parts of naphthenic oil, 2 parts of silane coupling agent, 55 parts of absolute ethanol, 0.1-0.5 parts of hydrochloric acid solution, 55 parts of modified magnesium hydroxide, 5 parts of charring agent, 0.5 parts of antioxidant, and 1 part of lubricant.

[0028] Further, it comprises the following raw materials in parts by mass, 40 parts of SEBS, 25 parts of polypropylene, 25 parts of naphthenic oil, 2 parts of silane coupling agent, 45 parts of absolute ethanol, 0.1-0.5 parts of hydrochloric acid solution, 45 parts of modified magnesium hydroxide, 5 parts of charring agent, 0.8 parts of antioxidant, and 1.2 parts of lubricant.

[0029] Further, it comprises the following raw materials in parts by mass, 30 parts of SEBS, 20 parts of polypropylene, 20 parts of naphthenic oil, 2 parts of silane coupling agent, 65 parts of absolute ethanol, 0.1-0.5 parts of hydrochloric acid solution, 65 parts of modified magnesium hydroxide, 5 parts of charring agent, 0.5 parts of antioxidant, and 1 part of lubricant.

[0030] Further, it comprises the following raw materials in parts by mass, 30 parts of SEBS, 20 parts of polypropylene, 20 parts of naphthenic oil, 2 parts of silane coupling agent, 55 parts of absolute ethanol, 0.1-0.5 parts of hydrochloric acid solution, 35 parts of modified magnesium hydroxide, 25 parts of aluminum hydroxide, 5 parts of charring agent, 0.5 parts of antioxidant, and 1 part of lubricant.

[0031] A manufacturing method of a flame-retardant automotive floor mat material is also provided, comprising the following steps:

[0032] Step 1. Modify magnesium hydroxide

[0033] Place the magnesium hydroxide flame retardant powder in a vacuum drying oven and dry it for 2 hours to make its water content less than 0.2%; after ultrasonic dispersion in ethanol for 30 min, take a certain amount of distilled water and preheat it to 60 °C; weigh the silane coupling agent with a dosage of 1%-2% of magnesium hydroxide, add 90% ethanol aqueous solution and a small amount of hydrochloric acid solution, adjust the pH value, place it on a magnetic stirrer at a constant temperature of 35 °C, stir for 1.5 hours, then let it stand and cool to room temperature, extract part of the product and detect its pH value. After its pH value reaches neutral, filter it, then place it in a vacuum drying oven, adjust the temperature to 120 °C, and dry for 2 hours, crush and screen it to obtain the modified magnesium hydroxide powder;

[0034] Step 2: Make the foot mat

[0035] Place SEBS and polypropylene in a drying oven and dry at 80 °C for 2 hours respectively, add a certain proportion of naphthenic oil and heat it, stir evenly at a constant speed, pour it into a high-speed mixer after mixing evenly, mix it fully with a certain amount of SEBS and then take it out, place it in a container and let it stand for 48 hours to allow the naphthenic oil to fully swell into SEBS to prepare a mixture, add polypropylene according to the proportion, and then weigh the corresponding mass of the modified flame retardant and other additives according to different flame retardant addition ratios, mix them together and stir at high speed for 15 minutes. After mixing evenly, add them to a twin-screw extruder and extrude at a temperature of 180 °C, press them into sheets of various thicknesses on a flat plate, and finally cut them into test pieces of different experimental standard sizes to detect the performance of the products.

[0036] The advantages of the present invention compared with the prior art are as follows:

[0037] The flame retardant automotive foot mat material of the present invention has the characteristics of being halogen-free, low-smoke, non-toxic, drip-resistant, acid-resistant, odorless, good stability, non-volatile, high decomposition temperature, and non-corrosive to equipment because magnesium hydroxide is added as a flame retardant synthetic material.

[0038] When the magnesium hydroxide flame retardant decomposes by heating, it releases bound water and absorbs a large amount of latent heat to reduce the surface temperature of the synthetic material it fills in the flame, having the functions of inhibiting the decomposition of the polymer and cooling the generated combustible gas. The generated magnesium oxide is also a good refractory material and can also help improve the fire resistance of the TPE foot mat; at the same time, the water vapor released during combustion can also be used as a smoke suppressant.

[0039] This TPE foot mat material has no harmful substance emissions during the production, use and disposal processes, and using magnesium hydroxide as a flame retardant is the cheapest flame retardant in the halogen-free flame retardant series products. Its raw materials are easily available and the cost is low; natural minerals such as brucite and periclase, bittern and old bittern are all raw materials for preparing magnesium hydroxide, which is conducive to large-scale industrial applications. Specific embodiments

[0040] The following is a further detailed description of a flame-retardant automotive floor mat material and its manufacturing method according to the present invention.

[0041] Working principle of the present invention:

[0042] The flame retardant selected in the present invention is magnesium hydroxide flame retardant. Magnesium hydroxide is a highly polar inorganic compound, stable below 300 °C, starting to decompose at 340 °C to form magnesium oxide and water, with the fastest decomposition rate at 430 °C and complete decomposition at 490 °C. It is soluble in dilute acids and ammonium salt solutions, insoluble in water and ethanol. Magnesium hydroxide not only has a flame retardant effect, but also has a smoke suppression function, is non-toxic, non-corrosive, has multiple properties superior to aluminum hydroxide, is safe and inexpensive, and belongs to an environmentally friendly inorganic flame retardant.

[0043] Flame retardant principle of magnesium hydroxide: When heated (340 - 490 °C), it decomposes to absorb the heat on the surface of the combustible to achieve a flame retardant effect; at the same time, a large amount of water is released to dilute the oxygen on the surface of the combustible, and the active magnesium oxide generated by decomposition adheres to the surface of the combustible, further preventing the combustion from proceeding. During the entire flame retardant process, magnesium hydroxide does not produce any harmful substances, and its decomposition products can not only absorb a large amount of harmful gases and smoke generated by the combustion of polymers such as rubber and plastic during flame retardancy, but also the active magnesium oxide continuously absorbs the unburned molten residues, so that the combustion stops quickly while eliminating smoke and preventing dripping. Therefore, it is a new type of environmentally friendly inorganic flame retardant. It can not only play a flame retardant role, but also play a filling role. It has the characteristics of not generating corrosive halogen gases and harmful gases, not volatilizing, having a long-lasting effect, being non-toxic, smokeless, and non-dripping.

[0044] However, as a polar inorganic substance, magnesium hydroxide has poor compatibility with polymers, is unevenly dispersed in the polymer matrix, and will damage the mechanical properties of the material. At the same time, since the combustion heat of magnesium hydroxide is less than that of the polymer material, a sufficient filling amount must be achieved to achieve an ideal flame retardant effect. Generally, the filling amount of magnesium hydroxide is required to reach 50% - 60%. Such a high filling amount will result in insufficient strength of the composite material, increased fracture, and weakened mechanical properties such as impact strength. The present invention improves its dispersibility in the polymer and enhances the mechanical properties and flame retardant properties of the composite material through surface pretreatment of magnesium hydroxide.

[0045] The specific implementation process of a flame-retardant automotive floor mat material and its manufacturing method according to the present invention is as follows:

[0046] Example 1

[0047] 1. Surface modification of magnesium hydroxide:

[0048] Take 55 parts of magnesium hydroxide flame retardant powder and place it in a vacuum drying oven for 2 hours to make its water content less than 0.2%; after ultrasonic dispersion with ethanol for 30 min, take a certain amount of distilled water, preheat it to 60 °C, take 2 parts of silane coupling agent, add 55 parts of 90% ethanol aqueous solution and a small amount of hydrochloric acid solution, adjust the pH value, place it on a magnetic stirrer at a constant temperature of 35 °C, stir for 1.5 hours, then let it stand and cool to room temperature, extract part of the product and detect its pH value. Since the hydrolysis rate of silane is related to the pH value, the neutral rate is the slowest, and the acidic and alkaline rates are both faster, so a small amount of hydrochloric acid solution needs to be added to adjust the pH value to neutral, filter, and then place it in a vacuum drying oven, adjust the temperature to 120 °C and dry for 2 hours, crush and screen to obtain the modified magnesium hydroxide powder.

[0049] 2. Blend the modified magnesium hydroxide / aluminum hydroxide with TPE material:

[0050] Place 30 parts of SEBS and 20 parts of polypropylene in a drying oven and dry at 80 °C for 2 hours respectively, add 20 parts of naphthenic oil and heat, stir evenly at a constant speed, pour it into a high-speed mixer after mixing evenly, mix well with a certain amount of SEBS and then take it out, place it in a container and let it stand for 48 hours to allow the naphthenic oil to fully swell into the SEBS to prepare a mixture. According to different flame retardant addition ratios, weigh the modified magnesium hydroxide powder, 5 parts of charring agent, 0.5 part of antioxidant and 1 part of lubricant, mix them together and stir at high speed for 15 minutes. After mixing evenly, add them to a twin-screw extruder and extrude at a temperature of 180 °C. After water cooling, press them into sheets of various thicknesses on a flat plate, and finally cut them into test pieces of different experimental standard sizes to detect the performance of the product.

[0051] Example 2

[0052] 1. Surface modification of magnesium hydroxide:

[0053] Take 45 parts of magnesium hydroxide flame retardant powder and place it in a vacuum drying oven for 2 hours to make its water content less than 0.2%; after ultrasonic dispersion with ethanol for 30 min, take a certain amount of distilled water, preheat it to 60 °C, take 2 parts of silane coupling agent, add 45 parts of 90% ethanol aqueous solution and a small amount of hydrochloric acid solution, adjust the pH value, place it on a magnetic stirrer at a constant temperature of 35 °C, stir for 1.5 hours, then let it stand and cool to room temperature, extract part of the product and detect its pH value. Since the hydrolysis rate of silane is related to the pH value, the neutral rate is the slowest, and the acidic and alkaline rates are both faster, so a small amount of hydrochloric acid solution needs to be added to adjust the pH value to neutral, filter, and then place it in a vacuum drying oven, adjust the temperature to 120 °C and dry for 2 hours, crush and screen to obtain the modified magnesium hydroxide powder.

[0054] 2. Blend the modified magnesium hydroxide / aluminum hydroxide with TPE material:

[0055] 40 parts of SEBS and 25 parts of polypropylene were placed in a drying oven and dried at 80°C for 2 hours, 25 parts of cyclohexane oil were added and heated, stirred at a uniform speed, poured into a high-speed mixer after being mixed thoroughly with a certain amount of SEBS, taken out, placed in a container and allowed to stand for 48 hours to allow the cyclohexane oil to fully swell into the SEBS, and a mixture was prepared; according to different addition ratios of different flame retardants, modified magnesium hydroxide powder, 5 parts of carbonizing agent, 0.8 parts of antioxidant and 1.2 parts of lubricant were weighed, mixed together with high-speed stirring for 15 minutes, added to a twin-screw extruder after being uniformly extruded at a temperature of 180°C, pressed into sheets of various thicknesses on a flat plate after water cooling, and finally cut into specimens of different experimental standard sizes to test the performance of the product.

[0056] Example 3

[0057] 1. Surface modification of magnesium hydroxide:

[0058] Take 65 parts of magnesium hydroxide flame retardant powder and place it in a vacuum drying oven for 2 hours to make its water content less than 0.2%; add ethanol ultrasonic dispersion for 30 minutes, take a certain amount of distilled water, preheat to 60°C, take 2 parts of silane coupling agent, add 65 parts of 90% ethanol aqueous solution, a small amount of hydrochloric acid solution, adjust the pH value, place it in a magnetic stirrer at a constant temperature of 35°C, stir for 1.5 hours, then stand and cool to room temperature, extract part of the output to detect its pH value, because the hydrolysis rate of silane is related to the pH value, neutral is the slowest, acidic and alkaline are faster, so a small amount of hydrochloric acid solution is added to adjust the pH value to neutral, filter, and then place it in a vacuum drying oven with the temperature adjusted to 120°C and the drying time for 2 hours, crush and sieve to obtain modified magnesium hydroxide powder.

[0059] 2. Combine the modified magnesium hydroxide / aluminum hydroxide with TPE material:

[0060] 30 parts of SEBS and 20 parts of polypropylene were placed in a drying oven and dried at 80°C for 2 hours, 20 parts of cyclohexane oil were added and heated, stirred at a uniform speed, poured into a high-speed mixer after mixing thoroughly with a certain amount of SEBS, taken out, placed in a container and allowed to stand for 48 hours to allow the cyclohexane oil to fully swell into the SEBS, and a mixture was prepared; according to different addition ratios of different flame retardants, modified magnesium hydroxide powder, 5 parts of carbonizing agent, 0.5 parts of antioxidant and 1 part of lubricant were weighed, mixed together with high-speed stirring for 15 minutes, added to a twin-screw extruder after being uniformly extruded at a temperature of 180°C, pressed into sheets of various thicknesses on a flat plate after water cooling, and finally cut into specimens of different experimental standard sizes to test the performance of the product.

[0061] Example 4

[0062] In the experiment, it was found that when the total content of magnesium hydroxide and aluminum hydroxide was 60 parts, magnesium hydroxide was 35 parts and aluminum hydroxide was 25 parts, and the two powders were mixed and tested, because the decomposition temperature of aluminum hydroxide is 100℃ lower than that of magnesium hydroxide, the dehydration endothermic reaction can exist in the range of 235~455℃ after the two are used together, which can inhibit the combustion of polymer materials in a wider range. The two have obvious synergistic effect and can play a flame retardant effect in a wider temperature difference.

[0063] 1. Surface modification of magnesium hydroxide and aluminum hydroxide:

[0064] Take 35 parts of magnesium hydroxide powder and 25 parts of aluminum hydroxide, a total of 60 parts of mixed powder, place it in a vacuum drying oven and dry it for 2 hours to make its water content less than 0.2%; add ethanol and ultrasonically disperse it for 30 minutes, take a certain amount of distilled water, preheat it to 60°C, take 2 parts of silane coupling agent, add 55 parts of 90% ethanol aqueous solution, a small amount of hydrochloric acid solution, adjust the pH value, place it in a magnetic stirrer at a constant temperature of 35°C, stir for 1.5 hours, then let it stand and cool to room temperature, extract part of the output to detect its pH value, because the hydrolysis rate of silane is related to the pH value, neutral is the slowest, and acidic and alkaline are faster, so a small amount of hydrochloric acid solution is added to adjust the pH value to neutral, filter, place it in a vacuum drying oven, adjust the temperature to 120°C, dry it for 2 hours, crush and sieve it, and obtain the modified magnesium hydroxide powder.

[0065] 2. Combine the modified magnesium hydroxide / aluminum hydroxide with TPE material:

[0066] 30 parts of SEBS and 20 parts of polypropylene were placed in a drying oven and dried at 80°C for 2 hours, 20 parts of cyclohexane oil were added and heated, stirred at a uniform speed, poured into a high-speed mixer after mixing thoroughly with a certain amount of SEBS, taken out, placed in a container and allowed to stand for 48 hours to allow the cyclohexane oil to fully swell into the SEBS, and a mixture was prepared; according to different addition ratios of different flame retardants, modified magnesium hydroxide powder, 5 parts of carbonizing agent, 0.5 parts of antioxidant and 1 part of lubricant were weighed, mixed together with high-speed stirring for 15 minutes, added to a twin-screw extruder after being uniformly extruded at a temperature of 180°C, pressed into sheets of various thicknesses on a flat plate after water cooling, and finally cut into specimens of different experimental standard sizes to test the performance of the product.

[0067] Performance testing:

[0068] The low-smoke halogen-free flame-retardant TPE materials prepared in Examples 1-4 of the present invention were tested, including their physical strength, flame retardant effect, smoke density, droplet, etc. The specific test results are shown in Table 1.

[0069] Table 1: Performance test table

[0070] Project Name Tensile Strength Elongation at Break % Flame Retardancy Smoke Density Dripping Phenomenon Testing Standard: National Standard GB / T1040 GB / T1040 GB / UL94 Example 1 16.5 310 V0 Less None Example 2 15.8 330 V0 Less None Example 3 17.2 270 V0 Relatively Less None Example 4 14.7 350 V0 Relatively Less None

[0071] As can be seen from Table 1, the properties of the low-smoke and halogen-free flame-retardant TPE material prepared by the present invention can fully meet the various property requirements of automotive floor mats.

[0072] The present invention and its implementation manners have been described above. Such description is not restrictive. If those of ordinary skill in the art are inspired by it and, without departing from the gist of the present invention, design similar structural manners and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. A flame-retardant automotive floor mat material, characterized in that: The invention comprises the following raw materials in parts by weight: 20-50 parts of SEBS, 10-30 parts of polypropylene, 20-50 parts of cyclohexane oil, 0.5-2 parts of silane coupling agent, 30-65 parts of anhydrous ethanol, 0.1-0.5 parts of hydrochloric acid solution, 40-65 parts of magnesium hydroxide, 2-6 parts of carbonizing agent, 0.2-0.6 parts of antioxidant and 0.5-2 parts of lubricant.

2. The flame-retardant automotive floor mat material according to claim 1, characterized in that: The invention comprises the following raw materials in parts by weight: 30 parts of SEBS, 20 parts of polypropylene, 20 parts of cyclohexane oil, 2 parts of silane coupling agent, 55 parts of anhydrous ethanol, 0.1-0.5 parts of hydrochloric acid solution, 55 parts of modified magnesium hydroxide, 5 parts of carbonizing agent, 0.5 parts of antioxidant and 1 part of lubricant.

3. A flame-retardant automotive floor mat material according to claim 1, characterized in that: The invention comprises the following raw materials in parts by weight: 40 parts of SEBS, 25 parts of polypropylene, 25 parts of cyclohexane oil, 2 parts of silane coupling agent, 45 parts of anhydrous ethanol, 0.1-0.5 parts of hydrochloric acid solution, 45 parts of modified magnesium hydroxide, 5 parts of carbonizing agent, 0.8 parts of antioxidant and 1.2 parts of lubricant.

4. A flame-retardant automotive floor mat material according to claim 1, characterized in that: The invention comprises the following raw materials in parts by weight: 30 parts of SEBS, 20 parts of polypropylene, 20 parts of cyclohexane oil, 2 parts of silane coupling agent, 65 parts of anhydrous ethanol, 0.1-0.5 parts of hydrochloric acid solution, 65 parts of modified magnesium hydroxide, 5 parts of carbonizing agent, 0.5 parts of antioxidant and 1 part of lubricant.

5. A flame-retardant automotive floor mat material according to claim 1, characterized in that: The invention comprises the following raw materials in parts by weight: 30 parts of SEBS, 20 parts of polypropylene, 20 parts of cyclohexane oil, 2 parts of silane coupling agent, 55 parts of anhydrous ethanol, 0.1-0.5 parts of hydrochloric acid solution, 35 parts of modified magnesium hydroxide, 25 parts of aluminum hydroxide, 5 parts of carbonizing agent, 0.5 parts of antioxidant and 1 part of lubricant.

6. A method for manufacturing a flame-retardant automotive floor mat material, characterized in that, The following steps are involved: Step 1: Modification of magnesium hydroxide The magnesium hydroxide flame retardant powder is placed in a vacuum drying oven and dried for 2 hours to make its water content less than 0.2%; after adding ethanol for ultrasonic dispersion for 30 minutes, a certain amount of distilled water is taken and preheated to 60°C; a silane coupling agent with an amount of 1%-2% of magnesium hydroxide is weighed, a 90% ethanol aqueous solution and a small amount of hydrochloric acid solution are added, the pH value is adjusted, and the powder is placed in a magnetic stirrer at a constant temperature of 35 degrees, stirred for 1.5 hours, and then allowed to stand and cool to room temperature, and part of the output is extracted to detect its pH value. When the pH value reaches neutral, it is filtered and placed in a vacuum drying oven again, the temperature is adjusted to 120°C, the drying time is 2 hours, and the powder is crushed and sieved to obtain the modified magnesium hydroxide powder; Step 2: Make the foot pads SEBS and polypropylene were placed in a drying oven and dried at 80°C for 2 hours respectively, a certain proportion of cyclohexane oil was added and heated, stirred at a uniform speed, and poured into a high-speed mixer after being thoroughly mixed with a certain amount of SEBS, taken out, and placed in a container for 48 hours to allow the cyclohexane oil to fully swell into the SEBS to prepare a mixture, polypropylene was added in proportion, and then according to different flame retardant addition ratios, the corresponding mass of modified flame retardant and other additives were weighed, mixed together with high-speed stirring for 15 minutes, added to a twin-screw extruder after being uniformly extruded at a temperature of 180°C, pressed into sheets of various thicknesses on a flat plate, and finally cut into specimens of different experimental standard sizes.