Multifunctional PA6 / ASA alloy material and preparation method thereof

Abstract

The invention belongs to the technical field of plastic alloy materials, and particularly relates to a multifunctional PA6 / ASA alloy material and a preparation method thereof.The preparation method comprises the steps that a proper biomass-based porous silicon carbon material is selected for treatment; weighing the PA resin, the AS resin and the compatilizer, putting into a stirring pot, and uniformly stirring; adding a wetting agent into the stirring pot, and uniformly stirring; adding a processing aid, toughened acrylic rubber powder and the treated biomass-based porous silicon carbon material into a stirring pot, uniformly stirring at a high speed, and adding the mixed material into a main feeding weightlessness scale; and setting the blanking amount of the weightlessness scale to be 30Kg / h, setting the rotating speed of a screw rod to be 420r / min, starting auxiliary equipment, and carrying out granulation production. The method is superior to a method for filling the PA6 / ASA material with inorganic minerals in special microcosmic shapes and adding a large number of functional auxiliaries, and light weight, noise reduction, low shrinkage, wear resistance, highlight, weather resistance and high temperature resistance can be achieved in the state that a single filler is added.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic alloy materials, and in particular relates to a multifunctional PA6 / ASA alloy material and a preparation method thereof. Background Art

[0002] At present, the plastic alloys on the market can only meet some functional requirements, and are often lacking in functional diversity. They need to use a variety of other materials to make up for it, resulting in the parts being unable to meet the requirements of lightweight and functional diversity. At this stage, researchers have done a lot of research on the modification of plastic alloys, enriching their diverse functional requirements by adding a variety of functional additives. However, the use of too many types of additives often causes rejection reactions, which not only fails to meet environmental protection requirements, but also causes problems that cannot be judged during later use. Therefore, when designing the formula, the formula should be simplified as much as possible, and various issues should be considered comprehensively to meet later use.

[0003] With the improvement of consumption level, the demand for multiple functions of a single product is becoming more and more urgent, which also poses higher challenges to scientific researchers. Under the condition of ensuring that the basic properties of alloy materials remain unchanged, expanding their functions has become the mainstream of material development at this stage. PA6 has good wear resistance, self-lubrication and solvent resistance, but it also has disadvantages such as moisture absorption, large shrinkage ratio and low toughness. The toughening system of ASA material is acrylic acid without unsaturated double bonds. It can not only resist degradation, aging and fading caused by ultraviolet radiation, but also has strong resistance to thermal oxidative aging, which can greatly improve the material's anti-aging and weather resistance, but it also has the disadvantages of high temperature resistance and poor odor. Although PA6 / ASA alloy has the advantages of the above two materials, it also concentrates the disadvantages of the two materials. Based on this, it is necessary to develop a multifunctional PA6 / ASA alloy material to effectively solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a multifunctional PA6 / ASA alloy material and a method for preparing the above material to solve the problem of achieving lightweight, noise reduction, low shrinkage, wear resistance, high gloss, weather resistance and high temperature resistance when a single filler is added.

[0005] The objective of the present invention is achieved through the following technical solutions: A multifunctional PA6 / ASA alloy material, composed of the following raw materials in parts by mass: PA resin: 45-53 parts, Toughened acrylic powder: 28 parts, AS resin: 12 parts, Compatibilizer: 4 parts, Treated biomass-based porous silicon-carbon material: 3-11 parts, Wetting agent: 0.5 parts, Processing aid package: 0.8 parts.

[0006] Furthermore, the PA resin is PA6 resin, the viscosity of PA6 resin is 2.0-3.2, the toughened acrylic rubber powder is at least one of SAN grafted cross-linked acrylic rubber impact modifier, acrylic / silicone composite rubber, and acrylic ester rubber body grafted with acrylonitrile and styrene, the AS resin is obtained by suspension polymerization using acrylonitrile and styrene as raw materials, the AS resin is selected from at least one of 10-30g / 10min melt finger type resins, the compatibilizer is selected from at least one of AS grafted maleic anhydride and PS grafted maleic anhydride, the treated biomass-based porous silicon-carbon material is a material with a silicon dioxide content of 10%-15%, and the powder particle size is between 10-25 microns, the wetting agent is one of white oil, diffusion oil, and silicone oil, and the processing aids include antioxidants, lubricants, and acid absorbers.

[0007] Furthermore, the processed biomass-based porous silicon-carbon material is rice husk or wheat husk.

[0008] Furthermore, the antioxidant is a compound of hindered phenols and phosphite antioxidants in a ratio of 1:2, the hindered phenols are at least one of 1010, 1076, and 1098, the phosphites are at least one of 168 and 626, the lubricant is at least one of EBS, PETS, stearic acid, stearate and PE wax, and the acid absorber is at least one of calcium stearate, barium stearate, and zinc stearate; the ratio of antioxidant: lubricant: acid absorber is 1:2:2.

[0009] A method for preparing a multifunctional PA6 / ASA alloy material comprises the following steps: A. Select biomass-based porous silicon carbon for treatment, select raw materials with a silicon dioxide content greater than 25%, and grind them into powder after high-temperature carbonization under the protection of inert gas to make their particle size reach 20-30 microns. Quantitatively control the silicon dioxide content of the material to make its silicon dioxide content reach 10%-15%. At this time, channels will be formed on the surface of the biomass-based silicon carbon material from which silicon dioxide is partially extracted, and the biomass-based porous silicon carbon material is treated with a surface treatment agent; B. Dry the PA6 material at 105℃ for 4 hours and the AS material at 80℃ for 4 hours; C. Weigh a certain amount of PA6 material, AS material and compatibilizer according to regulations and put them into a stirring pot, stir for 5 minutes and stir evenly; D. Add a certain amount of wetting agent into the stirring pot and stir for 5 minutes until it is evenly stirred; E. Add a certain amount of processing aid, toughened acrylic rubber powder, and treated biomass-based porous silicon-carbon material into the stirring pot and stir at high speed for 5 minutes to make the powder material completely and evenly wrapped on the outer surface of the solid particle material. In the comparative test, replace the treated biomass-based silicon-carbon powder with the corresponding material.

[0010] F. Add the stirred materials into the main feed loss-in-weight scale; G. Set the feed rate of the loss-in-weight scale and the appropriate screw speed, start the auxiliary equipment, and start granulation production.

[0011] Further, in step A, the processing method of the biomass-based carbon tubes is: A1, biomass-based porous silicon carbon was dried at -0.08MPa and 125℃ for 12 hours; A2. Put the cooled biomass-based porous silicon carbon into a reactor at a pressure of 1.5 MPa, add 1.5 times the volume of the biomass-based porous silicon carbon with alcohol, stir at a speed of 20 rpm, and react at 85°C for 4 hours; A3, the mixture discharged from the reactor was vacuum filtered, and then placed in a vacuum oven and dried at -0.08MPa and 85°C for 4 hours; A4, adding the dried biomass-based porous silicon carbon into a high-speed stirrer, heating the temperature to 85 ° C, stirring at a speed of 500 rpm, adding a silane coupling agent according to 1.2% of the weight of the dried biomass-based porous silicon carbon, and spraying the silane coupling agent three times using a spray device on the cover of the high-speed stirrer, the total time is 15 minutes; wherein the silane coupling agent is one or more of KH550, KH560, KH570, SI-69, and KH-903; A5. After releasing the materials, place them in an oven at 85°C for 4 hours for standby use.

[0012] Furthermore, the PA resin is 45-53 parts, the toughened acrylic rubber powder is 28 parts, the AS resin is 12 parts, the compatibilizer is 4 parts, the treated biomass-based porous silicon-carbon material is 3-11 parts, the wetting agent is 0.5 parts, and the processing aid package is 0.8 parts.

[0013] Furthermore, the biomass-based porous silicon-carbon material is some plant species of the Cyperaceae family and wet-growing species of the Poaceae family with high silicon dioxide content before treatment, preferably rice husk and wheat husk.

[0014] Furthermore, in step G, the feed rate of the loss-in-weight scale is set to 30 kg / hour, and the screw speed is 420 revolutions / minute for extrusion and granulation.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a multifunctional PA6 / ASA alloy material and a preparation method thereof, which is superior to the method of using inorganic minerals with special microscopic shapes to fill PA6 / ASA materials and adding a large amount of functional additives. It can achieve the purposes of light weight, noise reduction, low shrinkage, wear resistance, high gloss, weather resistance and high temperature resistance when a single filler is added. Specifically, it has the following advantages: 1. The pores formed on the surface of the biomass-based silicon-carbon material from which part of the silicon dioxide was extracted were sealed by the PA6 / ASA material to form a hollow. The material was made lightweight by adjusting the amount of addition. At the same time, the sealing effect was conducive to improving the compatibility of the PA6 / ASA material with the biomass-based porous silicon-carbon material; the hollow pores and the irregular distribution structure of "sea-island" soft and hard inside the PA6 / ASA alloy material would increase the loss during the transmission of sound waves; the porous biomass-based silicon-carbon material has a porous characteristic, and after being blended with the polymer, it will adsorb the small molecular substances of the material, thereby reducing the odor of the composite material; 2. The 10%-15% silicon dioxide retained by the biomass-based porous silicon-carbon material will improve the overall hardness and temperature resistance of the material. The carbon material has good self-lubricating properties. The two points working at the same time will improve the wear resistance and temperature resistance of the material; the inorganic silicon dioxide material will reduce the shrinkage rate of the PA6 / ASA material; 3. The biomass-based porous silicon-carbon material itself is black, and it is mixed with PA6 / ASA to form black. Black has the function of shielding ultraviolet rays. In addition, the ASA material is a ternary polymer composed of acrylonitrile-styrene-acrylic rubber, which does not contain unsaturated double bonds. Therefore, the material is more weather-resistant. When the biomass-based porous silicon-carbon material is filled with PA6 / ASA alloy, the material is more weather-resistant. 4. PA6 / ASA material uses a compatibilizer containing styrene, and its glossiness is higher after blending. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 Porous images of biomass-based porous silicon-carbon materials; Figure 2 Picture of biomass-based porous silicon-carbon material after silicon dioxide has been extracted; Figure 3 a1- Figure 3 c2 Silicon dioxide is attached to the surface of biomass-based porous silicon-carbon material; Figure 4Flow chart of the steps of the preparation method of the multifunctional PA6 / ASA alloy material. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with embodiments: The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0019] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, in the description of the present invention, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0020] The present invention provides a multifunctional PA6 / ASA alloy material and a preparation method thereof, the method comprising selecting a suitable biomass-based porous silicon-carbon material for treatment; weighing PA resin, AS resin, and compatibilizer into a stirring pot and stirring evenly; adding a wetting agent into the stirring pot and stirring evenly; adding a processing aid, toughened acrylic rubber powder, and treated biomass-based porous silicon-carbon material into the stirring pot, stirring evenly at high speed, and then adding the mixed material into a main feeding weight loss scale. Set the feeding amount of the weight loss scale, set a suitable screw speed, start the auxiliary equipment, and carry out granulation production.

[0021] The multifunctional PA6 / ASA alloy material of the present invention is composed of the following raw materials in parts by mass: PA resin: 45-53 parts, Toughened acrylic powder: 28 parts, AS resin: 12 parts, Compatibilizer: 4 parts, Treated biomass-based porous silicon-carbon material: 3-11 parts, Wetting agent: 0.5 parts, Processing aid package: 0.8 parts.

[0022] Wherein, the PA resin is PA6 resin, and the viscosity of PA6 resin is 2.0-3.2.

[0023] The toughened acrylic rubber powder uses acrylic rubber as the main toughening component resin, and is at least one of SAN-grafted cross-linked acrylic rubber impact modifiers, acrylic / organic silicon composite rubber, and grafts of acrylic rubber and acrylonitrile and styrene.

[0024] The AS resin is obtained by using acrylonitrile and styrene as raw materials through suspension polymerization, and the AS resin is selected from at least one of 10-30g / 10min melt-finger type resins.

[0025] The compatibilizer is mainly a grafted product containing styrene, and at least one of AS grafted maleic anhydride and PS grafted maleic anhydride is selected.

[0026] The treated biomass-based porous silicon-carbon material is a material with a silicon dioxide content of 10%-15% (the silicon dioxide content before treatment is greater than 25%), and its powder particle size is between 10-25 microns, which is commercially available. Some plant species in the Cyperaceae family and wet species in the Gramineae family with high silicon dioxide content before treatment are preferred, and rice husks, wheat husks, etc. are most preferred.

[0027] The processing method is: 1. Biomass-based porous silicon carbon was dried at -0.08MPa and 125℃ for 12 hours; 2. Put the cooled biomass-based porous silicon carbon into a reactor with a pressure of 1.5Mpa, add 1.5 times the volume of biomass-based porous silicon carbon with alcohol, stir at a speed of 20 rpm, and react at 85°C for 4 hours; 3. The mixture discharged from the reactor was vacuum filtered, and then placed in a vacuum oven for drying at -0.08 MPa and 85°C for 4 hours; 4. Add the dried biomass-based porous silicon carbon into a high-speed stirrer, heat to 85°C, stir at 500 rpm, add silane coupling agent at 1.2% of the weight of the dried biomass-based porous silicon carbon, and use the spray device on the cover of the high-speed stirrer to spray the silane coupling agent three times (5 minutes / time), for a total of 15 minutes; wherein the silane coupling agent is one or more of KH550, KH560, KH570, SI-69, and KH-903.

[0028] 5. After releasing the materials, place them in an oven at 85°C for 4 hours for reaction time and set aside.

[0029] The wetting agent is one of white oil, diffusion oil and silicone oil.

[0030] The processing aid includes an antioxidant, a lubricant and an acid absorber, and the ratio is antioxidant: lubricant: acid absorber = 1:2:2. The antioxidant is a hindered phenol and a phosphite antioxidant in a ratio of 1:2, the hindered phenol is at least one of 1010, 1076, and 1098, and the phosphite is at least one of 168 and 626. The lubricant is at least one of EBS, PETS, stearic acid, stearate and PE wax. The acid absorber is at least one of calcium stearate, barium stearate and zinc stearate.

[0031] The preparation method of the multifunctional PA6 / ASA alloy material of the present invention comprises the following steps: A. Dry the PA resin at 105℃ for 4 hours and the AS resin at 80℃ for 4 hours; B. Weigh a certain amount of PA resin, AS resin and compatibilizer according to regulations and put them into a stirring pot. Stir for 5 minutes until they are evenly mixed.

[0032] C. Add a certain amount of wetting agent into the mixing pot and stir for 5 minutes until it is evenly mixed.

[0033] D. Add a certain amount of processing aid, toughened acrylic rubber powder, and treated biomass-based porous silicon-carbon material into the stirring pot and stir at high speed for 5 minutes to make the powder material completely and evenly wrapped on the outer surface of the solid particle material.

[0034] For comparison, this step can also replace the processed biomass-based silicon-carbon powder with corresponding substances.

[0035] E. Add the mixed materials into the main feed loss-in-weight scale.

[0036] F. Set the feed rate of the loss-in-weight scale to 30 kg / hour, set the appropriate screw speed to 420 rpm, turn on the auxiliary equipment, and start granulation production.

[0037] The present invention uses biomass-based porous silicon-carbon materials to fill PA6 / ASA alloys, so as to achieve the requirements of lightweight, noise reduction, low shrinkage, wear resistance, high gloss, weather resistance and high temperature resistance when a single filler is added. Among them, the biomass-based porous silicon-carbon material is made from some plant species in the Cyperaceae family and wet-growing species in the Poaceae family, such as rice and horsetail, which are obtained by high-temperature carbonization under the protection of inert gas and then ground to make its particle size reach 20-30 microns. When selecting raw materials, materials with a silicon dioxide content greater than 25% (calculated in the carbonized state) are selected. Specifically, the silicon dioxide of the material can be extracted by chemical means, and the silicon dioxide content of the material can be quantitatively controlled so that the silicon dioxide content reaches about 10%-15%. At this time, pores will be formed on the surface of the biomass-based silicon-carbon material from which the silicon dioxide has been partially extracted, such as Figure 2 As shown. The biomass-based porous silicon-carbon material is treated with a silane coupling agent to achieve good compatibility with the PA6 / ASA material. Filling the PA6 / ASA material with the treated biomass-based porous silicon-carbon material for blending and modification can give the PA6 / ASA alloy more functions, achieving the purpose of one material with multiple functions.

[0038] In the present invention, the pores formed on the surface of the biomass-based silicon-carbon material from which part of the silicon dioxide is extracted are sealed by the PA6 / ASA material to form a hollow space. The appropriate amount of addition will make the material lightweight. The hollow pores and the "sea-island" soft and hard irregular distribution structure inside the PA6 / ASA alloy material will increase the loss during the transmission of sound waves and effectively achieve noise reduction. The porous silicon-carbon material has the characteristics of being porous, such as Figure 1 As shown, after blending with the polymer, it will adsorb small molecular substances of the material, thereby reducing the odor of the composite material.

[0039] In the present invention, the 10%-15% silicon dioxide retained in the biomass-based porous silicon-carbon material will improve the temperature resistance of the material. The carbon material has good self-lubricating properties. The two points will simultaneously improve the wear resistance and temperature resistance of the composite material. The presence of porous carbon and inorganic silicon dioxide in the biomass-based porous silicon-carbon material will reduce the shrinkage rate of the composite material. Silicon dioxide adheres to the surface of carbon or penetrates carbon, such as Figure 3 As shown, when the addition amount of biomass-based porous silicon-carbon material is fixed, the shrinkage rate of the composite material increases with the increase of silica content. The density of silica is high and the density of porous carbon is low. Under the same mass, the silica content is high and the volume of biomass-based porous silicon-carbon is small.

[0040] In the present invention, the biomass-based porous silicon-carbon material itself is black, and is mixed and modified with PA6 / ASA to form black, and the black color has the function of shielding ultraviolet rays. In addition, the ASA material has a ternary polymer composed of acrylonitrile-styrene-acrylic rubber and does not contain unsaturated double bonds, so the material has weather resistance. Therefore, when the biomass-based porous silicon-carbon material is filled with PA6 / ASA alloy, the material is more weather-resistant.

[0041] In the present invention, the PA6 / ASA material uses a compatibilizer containing styrene, and has a higher gloss after blending.

[0042] A processed biomass-based porous silicon-carbon material, the processing method is: 1. Biomass-based porous silicon carbon was dried at -0.08MPa and 125℃ for 12 hours; 2. Put the cooled biomass-based porous silicon carbon into a reactor with a pressure of 1.5Mpa, add 1.5 times the volume of biomass-based porous silicon carbon with alcohol, stir at a speed of 20 rpm, and react at 85°C for 4 hours; 3. The mixture discharged from the reactor was vacuum filtered, and then placed in a vacuum oven for drying at -0.08 MPa and 85°C for 4 hours; 4. Add the dried biomass-based porous silicon carbon into a high-speed stirrer, heat to 85°C, stir at 500 rpm, add silane coupling agent at 1.2% of the weight of the dried biomass-based porous silicon carbon, and use the spray device on the cover of the high-speed stirrer to spray the silane coupling agent three times (5 minutes / time), for a total of 15 minutes; wherein the silane coupling agent is KH560.

[0043] 5. After releasing the materials, place them in an oven at 85°C for 4 hours for reaction time and set aside.

[0044] Example 1: A method for preparing a multifunctional PA6 / ASA alloy material, comprising the following steps: 1. Dry the PA6 resin at 105℃ for 4 hours and the AS resin at 80℃ for 4 hours; 2. Weigh 53 parts of PA6 resin, 12 parts of AS resin and 4 parts of compatibilizer into a stirring pot and stir for 5 minutes until evenly mixed.

[0045] 3. Add 0.5 parts of wetting agent into the mixing pot and stir for 5 minutes until it is evenly mixed.

[0046] 4. Add 0.8 parts of processing aid, 28 parts of toughened acrylic rubber powder and 3 parts of treated biomass-based porous silicon-carbon material into the stirring pot and stir at high speed for 5 minutes to make the powder material completely and evenly wrapped on the outer surface of the solid particle material.

[0047] 5. Add the mixed materials into the main feed loss-in-weight scale.

[0048] 6. Set the feed rate of the loss-in-weight scale to 30 kg / hour, set the appropriate screw speed to 420 rpm, turn on the auxiliary equipment, and start granulation production.

[0049] Example 2: A method for preparing a multifunctional PA6 / ASA alloy material, comprising the following steps: 1. Dry the PA6 resin at 105℃ for 4 hours and the AS resin at 80℃ for 4 hours; 2. Weigh 51 parts of PA6 resin, 12 parts of AS resin, and 4 parts of compatibilizer into a stirring pot and stir for 5 minutes until evenly mixed.

[0050] 3. Add 0.5 parts of wetting agent into the mixing pot and stir for 5 minutes until it is evenly mixed.

[0051] 4. Add 0.8 parts of processing aid, 28 parts of toughened acrylic rubber powder and 5 parts of treated biomass-based porous silicon-carbon material into the stirring pot and stir at high speed for 5 minutes to make the powder material completely and evenly wrapped on the outer surface of the solid particle material.

[0052] 5. Add the mixed materials into the main feed loss-in-weight scale.

[0053] 6. Set the feed rate of the loss-in-weight scale to 30 kg / hour, set the appropriate screw speed to 420 rpm, turn on the auxiliary equipment, and start granulation production.

[0054] Example 3: A method for preparing a multifunctional PA6 / ASA alloy material, comprising the following steps: 1. Dry the PA6 resin at 105℃ for 4 hours and the AS resin at 80℃ for 4 hours; 2. Weigh 49 parts of PA6 resin, 12 parts of AS resin and 4 parts of compatibilizer into a stirring pot and stir for 5 minutes until evenly mixed.

[0055] 3. Add 0.5 parts of wetting agent into the mixing pot and stir for 5 minutes until it is evenly mixed.

[0056] 4. Add 0.8 parts of processing aid, 28 parts of toughened acrylic rubber powder and 7 parts of treated biomass-based porous silicon-carbon material into the stirring pot and stir at high speed for 5 minutes to make the powder material completely and evenly wrapped on the outer surface of the solid particle material.

[0057] 5. Add the mixed materials into the main feed loss-in-weight scale.

[0058] 6. Set the feed rate of the loss-in-weight scale to 30 kg / hour, set the appropriate screw speed to 420 rpm, turn on the auxiliary equipment, and start granulation production.

[0059] Example 4: A method for preparing a multifunctional PA6 / ASA alloy material, comprising the following steps: 1. Dry the PA6 resin at 105℃ for 4 hours and the AS material at 80℃ for 4 hours; 2. Weigh 47 parts of PA6 resin, 12 parts of AS resin and 4 parts of compatibilizer into a stirring pot and stir for 5 minutes until evenly mixed.

[0060] 3. Add 0.5 parts of wetting agent into the mixing pot and stir for 5 minutes until it is evenly mixed.

[0061] 4. Add 0.8 parts of processing aid, 28 parts of toughened acrylic rubber powder and 9 parts of treated biomass-based porous silicon-carbon material into the stirring pot and stir at high speed for 5 minutes to make the powder material completely and evenly wrapped on the outer surface of the solid particle material.

[0062] 5. Add the mixed materials into the main feed loss-in-weight scale.

[0063] 6. Set the feed rate of the loss-in-weight scale to 30 kg / hour, set the appropriate screw speed to 420 rpm, turn on the auxiliary equipment, and start granulation production.

[0064] Example 5: A method for preparing a multifunctional PA6 / ASA alloy material, comprising the following steps: 1. Dry the PA6 resin at 105℃ for 4 hours and AS at 80℃ for 4 hours; 2. Weigh 45 parts of PA6 resin, 12 parts of AS resin and 4 parts of compatibilizer into a stirring pot and stir for 5 minutes until evenly mixed.

[0065] 3. Add 0.5 parts of wetting agent into the mixing pot and stir for 5 minutes until it is evenly mixed.

[0066] 4. Add 0.8 parts of processing aid, 28 parts of toughened acrylic rubber powder and 11 parts of treated biomass-based porous silicon-carbon material into the stirring pot and stir at high speed for 5 minutes to make the powder material completely and evenly wrapped on the outer surface of the solid particle material.

[0067] 5. Add the mixed materials into the main feed loss-in-weight scale.

[0068] 6. Set the feed rate of the loss-in-weight scale to 30 kg / hour, set the appropriate screw speed to 420 rpm, turn on the auxiliary equipment, and start granulation production.

[0069] Comparative Example 1: A method for preparing a multifunctional PA6 / ASA alloy material, comprising the following steps: 1. Dry the PA6 resin at 105℃ for 4 hours and the AS resin at 80℃ for 4 hours; 2. Weigh 56 parts of PA6 resin, 12 parts of AS resin and 4 parts of compatibilizer into a stirring pot and stir for 5 minutes until evenly mixed.

[0070] 3. Add 0.5 parts of wetting agent into the mixing pot and stir for 5 minutes until it is evenly mixed.

[0071] 4. Add 0.8 parts of processing aid and 28 parts of toughened acrylic rubber powder into the stirring pot and stir at high speed for 5 minutes to ensure that the powder material is completely and evenly wrapped on the outer surface of the solid particle material.

[0072] 5. Add the mixed materials into the main feed loss-in-weight scale.

[0073] 6. Set the feed rate of the loss-in-weight scale to 30 kg / hour, set the appropriate screw speed to 420 rpm, turn on the auxiliary equipment, and start granulation production.

[0074] Comparative Example 2: A method for preparing a multifunctional PA6 / ASA alloy material, comprising the following steps: 1. Dry the PA6 resin at 105℃ for 4 hours and the AS resin at 80℃ for 4 hours; 2. Weigh 49 parts of PA6 resin, 12 parts of AS resin and 4 parts of compatibilizer into a stirring pot and stir for 5 minutes until evenly mixed.

[0075] 3. Add 0.5 parts of wetting agent into the mixing pot and stir for 5 minutes until it is evenly mixed.

[0076] 4. Add 0.8 parts of processing aid, 28 parts of toughened acrylic rubber powder and 7 parts of treated nano barium sulfate into the stirring pot and stir at high speed for 5 minutes to make the powder material completely and evenly wrapped on the outer surface of the solid particle material.

[0077] 5. Add the mixed materials into the main feed loss-in-weight scale.

[0078] 6. Set the feed rate of the loss-in-weight scale to 30 kg / hour, set the appropriate screw speed to 420 rpm, turn on the auxiliary equipment, and start granulation production.

[0079] Comparative Example 3: A method for preparing a multifunctional PA6 / ASA alloy material, comprising the following steps: 1. Dry the PA6 resin at 105℃ for 4 hours and the AS resin at 80℃ for 4 hours; 2. Weigh 49 parts of PA6 resin, 12 parts of AS resin and 4 parts of compatibilizer into a stirring pot and stir for 5 minutes until evenly mixed.

[0080] 3. Add 0.5 parts of wetting agent into the mixing pot and stir for 5 minutes until it is evenly mixed.

[0081] 4. Add 0.8 parts of processing aid, 28 parts of toughened acrylic rubber powder and 7 parts of treated nano talc powder into the stirring pot and stir at high speed for 5 minutes to make the powder material completely and evenly coated on the outer surface of the solid particle material.

[0082] 5. Add the mixed materials into the main feed loss-in-weight scale.

[0083] 6. Set the feed rate of the loss-in-weight scale to 30 kg / hour, set the appropriate screw speed to 420 rpm, turn on the auxiliary equipment, and start granulation production.

[0084] Comparative Example 4: A method for preparing a multifunctional PA6 / ASA alloy material, comprising the following steps: 1. Dry the PA6 resin at 105℃ for 4 hours and the AS resin at 80℃ for 4 hours; 2. Weigh 49 parts of PA6 resin, 12 parts of AS resin and 4 parts of compatibilizer into a stirring pot and stir for 5 minutes until evenly mixed.

[0085] 3. Add 0.5 parts of wetting agent into the mixing pot and stir for 5 minutes until it is evenly mixed.

[0086] 4. Add 0.8 parts of processing aid, 28 parts of toughened acrylic rubber powder and 7 parts of untreated biomass-based porous silicon-carbon material into the stirring pot and stir at high speed for 5 minutes to make the powder material completely and evenly wrapped on the outer surface of the solid particle material.

[0087] 5. Add the mixed materials into the main feed loss-in-weight scale.

[0088] 6. Set the feed rate of the loss-in-weight scale to 30 kg / hour, set the appropriate screw speed to 420 rpm, turn on the auxiliary equipment, and start granulation production.

[0089] Comparative Example 5: A method for preparing a multifunctional PA6 / ASA alloy material, comprising the following steps: 1. Dry the PA6 resin at 105℃ for 4 hours and the AS resin at 80℃ for 4 hours; 2. Weigh 49 parts of PA6 resin, 12 parts of AS resin and 4 parts of olefin compatibilizer into a stirring pot and stir for 5 minutes until evenly mixed.

[0090] 3. Add 0.5 parts of wetting agent into the mixing pot and stir for 5 minutes until it is evenly mixed.

[0091] 4. Add 0.8 parts of processing aid, 28 parts of toughened acrylic rubber powder and 7 parts of treated biomass-based porous silicon-carbon material into the stirring pot and stir at high speed for 5 minutes to make the powder material completely and evenly wrapped on the outer surface of the solid particle material.

[0092] 5. Add the mixed materials into the main feed loss-in-weight scale.

[0093] 6. Set the feed rate of the loss-in-weight scale to 30 kg / hour, set the appropriate screw speed to 420 rpm, turn on the auxiliary equipment, and start granulation production.

[0094] Comparative Example 6: A method for preparing a multifunctional PA6 / ASA alloy material, comprising the following steps: 1. Dry the PA6 resin at 105℃ for 4 hours and the AS resin at 80℃ for 4 hours; 2. Weigh 49 parts of PA6 resin, 12 parts of AS resin and 4 parts of compatibilizer into a stirring pot and stir for 5 minutes until evenly mixed.

[0095] 3. Add 0.5 parts of wetting agent into the mixing pot and stir for 5 minutes until it is evenly mixed.

[0096] 4. Add 0.8 parts of processing aid, 28 parts of toughened acrylic rubber powder and 7 parts of treated biomass-based porous silicon-carbon material (silicon dioxide content 30%) into the stirring pot and stir at high speed for 5 minutes to make the powder material completely and evenly wrapped on the outer surface of the solid particle material.

[0097] 5. Add the mixed materials into the main feed loss-in-weight scale.

[0098] 6. Set the feed rate of the loss-in-weight scale to 30 kg / hour, set the appropriate screw speed to 420 rpm, turn on the auxiliary equipment, and start granulation production.

[0099] Comparative Example 7: A method for preparing a multifunctional PA6 / ASA alloy material, comprising the following steps: 1. Dry the PA6 resin at 105℃ for 4 hours and the AS resin at 80℃ for 4 hours; 2. Weigh 49 parts of PA6 resin, 12 parts of AS resin and 4 parts of compatibilizer into a stirring pot and stir for 5 minutes until evenly mixed.

[0100] 3. Add 0.5 parts of wetting agent into the mixing pot and stir for 5 minutes until it is evenly mixed.

[0101] 4. Add 0.8 parts of processing aid, 28 parts of toughened acrylic rubber powder and 7 parts of untreated biomass-based porous silicon-carbon material (silicon dioxide content 30%) into the stirring pot and stir at high speed for 5 minutes to make the powder material completely and evenly wrapped on the outer surface of the solid particle material.

[0102] 5. Add the mixed materials into the main feed loss-in-weight scale.

[0103] 6. Set the feed rate of the loss-in-weight scale to 30 kg / hour, set the appropriate screw speed to 420 rpm, turn on the auxiliary equipment, and start granulation production.

[0104] The present invention provides the composition ratios of Examples 1 to 5, as shown in Table 1 (in parts by weight): Table 1

[0105] The present invention provides the composition ratios of Comparative Examples 1 to 7, as shown in Table 2 (in parts by weight): Table 2

[0106] The test results are shown in Table 3:

[0107] By comparing Examples 1-5 with Comparative Example 1, it can be concluded that the addition of treated biomass-based porous silicon-carbon materials can reduce the density of PA6 / ASA materials, thereby achieving the purpose of lightweighting. Biomass-based porous silicon-carbon modified materials and PA / ASA materials are porous and sealed by thermoplastic materials to form hollows, so the density of the composite material gradually decreases with the increase in the amount of biomass-based porous silicon-carbon modified materials added. The PA6 / ASA material with added treated biomass-based porous silicon-carbon has a great improvement in odor. The treated biomass-based porous silicon-carbon has porous carbon that can adsorb small molecules, so the odor of the composite material can be reduced. The material has a higher gloss by adding a compatibilizer containing styrene. It can be seen from Comparative Example 5 that the gloss of the composite material is lower by adding a compatibilizer containing ethylene. Adding a suitable amount of treated biomass-based porous silicon-carbon material will slightly reduce the gloss of the composite material, so the appropriate number of added portions will have little effect on the gloss of the composite material.

[0108] By comparing Examples 1 to 5, Comparative Example 1, and Comparative Example 4 to Comparative Example 7, it can be seen that the wear resistance and temperature resistance of the PA6 / ASA material added with biomass-based porous silicon carbon are improved overall, and the mass loss rate after the wear test is greatly reduced. After the treated biomass-based porous silicon carbon is added with PA6 / ASA material, the mass loss rate of the composite material after the wear test is further reduced and the temperature resistance is further improved. By comparing Comparative Example 6 to Comparative Example 7 with Example 5, it can be seen that when the silicon dioxide content in the biomass-based porous silicon carbon is increased, the wear resistance and temperature resistance are further improved.

[0109] By comparing Examples 1 to 5 with Comparative Example 1, it can be seen that the addition of treated biomass-based porous silicon-carbon materials can reduce the overall shrinkage of the composite material, but when the amount of treated biomass-based porous silicon-carbon materials added exceeds 7%, the shrinkage rate reduction rate is flat. By comparing Examples 1 to 5 with Comparative Examples 6 to 7, it can be seen that increasing the silicon dioxide content in the biomass-based porous silicon-carbon material will reduce the shrinkage of the composite material.

[0110] By comparing Examples 1-5 with Comparative Example 1, it can be seen that the added treated biomass-based porous silicon-carbon material can improve the sound absorption performance of the composite material, which is the function of the material to achieve noise reduction, and the more the amount added, the higher the sound absorption level, and the better the noise reduction effect of the material. Compared with Comparative Examples 6-7, Examples 1-5 show that when the silicon dioxide content in the biomass-based porous silicon-carbon material increases, the sound absorption performance of the material will be reduced, and the noise reduction performance will decrease. Example 3 and Comparative Example 4 show that whether the biomass-based porous silicon-carbon material is treated or not will not affect the sound absorption coefficient of the composite material.

[0111] By comparing Examples 1-5 with Comparative Example 1, it can be seen that the added treated biomass-based porous silicon-carbon material can improve the weather resistance of the composite material. The treated biomass-based porous silicon-carbon material is black, and the black material has the function of shielding light, and has advantages in weather resistance. The ASA material does not contain double bonds, so it has good weather resistance. Combining the above advantages, the composite material has good weather resistance.

[0112] Specific gravity test standard: ISO 1183 Charpy notched impact test standard: ISO 179 Shrinkage test standard: ISO 294 Heat distortion temperature test standard: ISO 75 Gloss test standard: GB / T 13891 Color fastness to rubbing of textiles: GB / T 3920 Smell: PV3900 Weathering test standard: PV1303 Sound absorption performance classification of building sound absorption products: GB / T 16731 Sound absorption performance classification table (noise reduction performance coefficient method), see Table 4.

[0113] Table 4

[0114] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A multifunctional PA6 / ASA alloy material, characterized in that: The composition is composed of the following raw materials in parts by mass: PA resin: 45-53 parts, Toughened acrylic powder: 28 parts, AS resin: 12 parts, Compatibilizer: 4 parts, Treated biomass-based porous silicon-carbon material: 3-11 parts, Wetting agent: 0.5 parts, Processing aid package: 0.8 parts.

2. The multifunctional PA6 / ASA alloy material according to claim 1, characterized in that: The PA resin is PA6 resin, and the viscosity of PA6 resin is 2.0-3.

2. The toughened acrylic rubber powder is at least one of SAN grafted cross-linked acrylic rubber impact modifier, acrylic / silicone composite rubber, and grafts of acrylic rubber and acrylonitrile and styrene. The AS resin is obtained by suspension polymerization using acrylonitrile and styrene as raw materials. The AS resin is selected from at least one of 10-30g / 10min melt finger type resins. The compatibilizer is selected from at least one of AS grafted maleic anhydride and PS grafted maleic anhydride. The treated biomass-based porous silicon-carbon material is a material with a silicon dioxide content of 10%-15%, and its powder particle size is between 10-25 microns. The wetting agent is one of white oil, diffusion oil, and silicone oil. The processing aids include antioxidants, lubricants, and acid absorbers.

3. The multifunctional PA6 / ASA alloy material according to claim 2, characterized in that: The processed biomass-based porous silicon-carbon materials are rice husks and wheat husks.

4. The multifunctional PA6 / ASA alloy material according to claim 2, characterized in that: The antioxidant is a compound of hindered phenols and phosphite antioxidants in a ratio of 1:2, the hindered phenols are at least one of 1010, 1076, and 1098, the phosphites are at least one of 168 and 626, the lubricant is at least one of EBS, PETS, stearic acid, stearate, and PE wax, and the acid absorber is at least one of calcium stearate, barium stearate, and zinc stearate; the ratio of antioxidant: lubricant: acid absorber is 1:2:

2.

5. The method for preparing a multifunctional PA6 / ASA alloy material according to claim 1, characterized in that: The following steps are involved: A. Select biomass-based porous silicon carbon for treatment, select raw materials with a silicon dioxide content greater than 25%, and grind them into powder after high-temperature carbonization under the protection of inert gas to make their particle size reach 20-30 microns. Quantitatively control the silicon dioxide content of the material to make its silicon dioxide content reach 10%-15%. At this time, channels will be formed on the surface of the biomass-based silicon carbon material from which silicon dioxide is partially extracted, and the biomass-based porous silicon carbon material is treated with a surface treatment agent; B. Dry the PA6 material at 105℃ for 4 hours and the AS material at 80℃ for 4 hours; C. Weigh a certain amount of PA6 material, AS material and compatibilizer according to regulations and put them into a stirring pot, stir for 5 minutes and stir evenly; D. Add a certain amount of wetting agent into the stirring pot and stir for 5 minutes until it is evenly stirred; E. Add a certain amount of processing aid, toughened acrylic rubber powder, and treated biomass-based porous silicon-carbon material to the stirring pot, and stir at high speed for 5 minutes to make the powder material completely and evenly wrapped on the outer surface of the solid particle material. In the comparative test, replace the treated biomass-based silicon-carbon powder with the corresponding material; F. Add the stirred materials into the main feed loss-in-weight scale; G. Set the feed rate of the loss-in-weight scale and the appropriate screw speed, start the auxiliary equipment, and start granulation production.

6. The method for preparing a multifunctional PA6 / ASA alloy material according to claim 5, characterized in that: Step A, the processing method of biomass-based carbon tubes is: A1, biomass-based porous silicon carbon was dried at -0.08MPa and 125℃ for 12 hours; A2. Put the cooled biomass-based porous silicon carbon into a reactor at a pressure of 1.5 MPa, add 1.5 times the volume of the biomass-based porous silicon carbon with alcohol, stir at a speed of 20 rpm, and react at 85°C for 4 hours; A3, the mixture discharged from the reactor was vacuum filtered, and then placed in a vacuum oven and dried at -0.08MPa and 85°C for 4 hours; A4, adding the dried biomass-based porous silicon carbon into a high-speed stirrer, heating the temperature to 85 ° C, stirring at a speed of 500 rpm, adding a silane coupling agent according to 1.2% of the weight of the dried biomass-based porous silicon carbon, and spraying the silane coupling agent three times using a spray device on the cover of the high-speed stirrer, the total time is 15 minutes; wherein the silane coupling agent is one or more of KH550, KH560, KH570, SI-69, and KH-903; A5. After releasing the materials, place them in an oven at 85°C for 4 hours for standby use.

7. The method for preparing a multifunctional PA6 / ASA alloy material according to claim 5, characterized in that: The PA resin is 45-53 parts, the toughened acrylic rubber powder is 28 parts, the AS resin is 12 parts, the compatibilizer is 4 parts, the treated biomass-based porous silicon-carbon material is 3-11 parts, the wetting agent is 0.5 parts, and the processing aid package is 0.8 parts.

8. The method for preparing a multifunctional PA6 / ASA alloy material according to claim 5, characterized in that: The biomass-based porous silicon-carbon materials are some plant species in the Cyperaceae family and wet-growing species in the Poaceae family that have high silicon dioxide content before treatment.

9. The method for preparing a multifunctional PA6 / ASA alloy material according to claim 5, characterized in that: In step G, the feed rate of the loss-in-weight scale is set to 30 kg / hour, and the screw speed is 420 rpm for extrusion and granulation.

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