Anti-bending ABS (acrylonitrile butadiene styrene) composite material for clothes hanger and production process thereof

Abstract

The invention discloses an anti-bending ABS composite material for clothes hangers and a production process of the anti-bending ABS composite material, and relates to the technical field of plastic products. The anti-bending ABS composite material for the clothes hanger is prepared from the following raw material components in parts by mass: 100 to 120 parts of ABS resin, 10 to 15 parts of SAN resin, 20 to 30 parts of reinforcing auxiliary materials, 20 to 25 parts of antioxidant auxiliary materials, 0.5 to 1.5 parts of lubricating agents and 1 to 2 parts of light stabilizers, wherein the reinforced auxiliary material is prepared by the following steps: putting carboxymethyl cellulose into deionized water, continuously stirring for 2-3 hours, adding modified polyaspartic acid and calcium chloride, stirring and mixing, adding short carbon fibers, stirring for 20-30 minutes, adding a sodium carbonate solution, stirring and reacting for 0.5-2 hours, filtering, washing and drying to obtain the modified short carbon fibers; and mixing the mixture with SEBS-g-MAH, carrying out melt extrusion at 220-240 DEG C, and pelletizing to obtain the reinforced auxiliary material.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plastic products, in particular to an anti-bending ABS composite material for clothes hangers and a production process thereof. BACKGROUND

[0002] Clothes hangers are daily necessities, and need to meet the mechanical requirements of frequent clothes hanging and taking (such as bearing the weight of clothes and resisting accidental bending), which is directly related to the service life of the clothes hangers. At present, acrylonitrile-butadiene-styrene copolymer (ABS) is widely used in the manufacture of clothes hangers. ABS dominates the field of plastic clothes hangers due to its good comprehensive mechanical properties, processing fluidity and cost advantage. Although traditional ABS materials have been widely used in clothes hanger production, their inherent anti-bending performance is still insufficient when dealing with heavy clothes or long-term use fatigue stress: stress concentration easily occurs, leading to breakage, cracking and other problems, resulting in short service life and fast consumption; imbalance between rigidity and toughness: adding rubber toughening agent to improve impact resistance, but it will sacrifice rigidity, resulting in deformation and sagging of the clothes hanger; poor weather resistance: under long-term temperature fluctuations or light, the anti-bending performance decays, leading to brittle fracture. Therefore, it is urgent to find a production process of an anti-bending ABS composite material to meet the performance improvement of product clothes hangers. SUMMARY

[0003] The present application aims to provide an anti-bending ABS composite material for clothes hangers and a production process thereof to solve the problems in the prior art.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solutions: An anti-bending ABS composite material for clothes hangers comprises the following raw material components: 100-120 parts by mass of ABS resin, 10-15 parts by mass of SAN resin, 20-30 parts by mass of reinforcing auxiliary material, 20-25 parts by mass of antioxidant auxiliary material, 0.5-1.5 parts by mass of lubricant and 1-2 parts by mass of light stabilizer. Preferably, the preparation steps of the reinforcing auxiliary material are as follows: Step s1: Dissolve maleic anhydride in deionized water under stirring, add ammonia, treat at 180-200℃ for 3-4h, then dissolve in N,N-dimethylformamide under stirring, filter, precipitate with ethanol, wash, mix with ethanol under stirring, add sodium ethoxide solution containing urea and adjust the pH of the system to 10, heat at 45-50℃ for 8-10h, adjust the pH of the system to 7, filter and dry to obtain modified polyaspartic acid; Step s2: Put carboxymethyl cellulose in deionized water and continuously stir for 2-3h, mix the modified polyaspartic acid and calcium chloride under stirring, add short carbon fibers and stir for 20-30min, add sodium carbonate solution and stir for 0.5-2h, then filter, wash and dry to obtain modified short carbon fibers. Step s3: melt extruding the modified short carbon fiber and SEBS-g-MAH after mixing, granulating to obtain the reinforcing auxiliary material at a temperature of 220-240℃; Preferably, the modified polyaspartic acid prepared in step s1 comprises the following raw material components: 8-10 parts by mass of maleic anhydride, 10-15 parts by mass of ammonia water and 15-25 parts by mass of urea; Preferably, the modified short carbon fiber prepared in step s2 comprises the following raw material components: 1.5-2.0 parts by mass of carboxymethyl cellulose, 1.5-2.0 parts by mass of modified polyaspartic acid, 2-2.5 parts by mass of calcium chloride, 5-10 parts by mass of short carbon fiber and 2-2.5 parts by mass of sodium carbonate; Preferably, the mass ratio of the modified short carbon fiber to SEBS-g-MAH in step s3 is (2-10):5; Preferably, the preparation steps of the antioxidant auxiliary material are as follows: stirring glucose and sodium pyrophosphate in deionized water, adding ferrous sulfate, potassium hydroxide and polybutadiene latex, stirring in a water bath at 65℃ for 20-30min, then adding benzene hydroperoxide, styrene and acrylonitrile, continuing to react for 0.5h, then increasing the temperature to 75℃ and reacting for 1h, decreasing the temperature to 60℃, adding antioxidant emulsion and stirring for 20min, then pouring into a sulfuric acid solution, stirring for 5-10min, increasing the temperature to 95-100℃ and treating for 5-8min, filtering the material, drying to obtain the antioxidant auxiliary material; Preferably, the mass ratio of polybutadiene latex, styrene, acrylonitrile and antioxidant emulsion is 10:3:2:(4-5); Preferably, the preparation steps of the antioxidant emulsion are as follows: mixing antioxidant CPL and DLTP, heating in a water bath at 85℃ for 2-5min, then adding potassium oleate and premixing for 5min, then adding potassium hydroxide solution and deionized water under stirring and stirring for 20-30min to obtain the antioxidant emulsion; More preferably, the mass percentage of CPL in the antioxidant is 15-20% and the mass percentage of DLTP is 20-25%; A production process of a clothes hanger anti-bending ABS composite material, comprising the following process steps: mixing ABS resin, SAN resin, reinforcing auxiliary material, antioxidant auxiliary material, lubricant and light stabilizer at high speed, then melt extruding in a double screw extruder, granulating and drying to obtain the anti-bending ABS composite material.

[0005] Preferably, the process parameters of high speed stirring are as follows: rotation speed of 1200-1300r / min and time of 5-10min; Preferably, the first section temperature is set to 198-202℃, the second section temperature is set to 203-208℃, the third section temperature is set to 208-215℃, the fourth section temperature is set to 218-223℃, the fifth section temperature is set to 228-233℃, and the sixth section temperature is set to 235-240℃; and the screw rotation speed is 30-40r / min.

[0006] Compared with the prior art, the application has the following beneficial effects: The ABS composite material is obtained by melt blending ABS resin, SAN resin, reinforcing auxiliary, antioxidant auxiliary, lubricant and light stabilizer; the reinforcing auxiliary is used for growing calcium carbide on the surface of carbon fiber in situ through biomimetic mineralization; the modified polyaspartic acid is used for not only regulating the growth of calcium carbide together with carboxymethyl cellulose (crystal growth regulator) as a scale inhibitor, so that the distribution particle size of calcium carbide is improved, but also for synthesizing poly succinimide from maleic anhydride and ammonia and then copolymerizing with urea, so that the acid anhydride of SEBS-g-MAH is reacted, the elastomer is introduced into ABS through covalent bond, the compatibility between ABS and the elastomer is improved, the structure can effectively transmit stress, further improve the strength and rigidity, and the interface layer can also consume impact energy through deformation, so that the toughness is improved; the antioxidant auxiliary is used for introducing antioxidant emulsion in the grafting emulsion polymerization stage of ABS, so that the dispersion effect of the antioxidant in the ABS matrix is realized, the antioxidant particles are locked, the loss of the antioxidant in the melt blending stage is reduced, and the durability of the material is improved. DETAILED DESCRIPTION

[0007] Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the application.

[0008] In the experiment, the ABS resin is D-120A, which is purchased from Dongguan Shenghua Plastic Raw Material Co., Ltd. The solid content of the polybutadiene latex is 37.5%, and the SAN resin is 103, which are both purchased from Tianjin Dagu Chemical Co., Ltd. The short carbon fiber is obtained by cutting PAN-based carbon fiber (T700SC-12K, purchased from Carbonene Technology Shenzhen Co., Ltd.), and the length is 2mm. The carboxymethyl cellulose has a M.W. of 90000, which is purchased from Shanghai Aldrin. The SEBS-g-MAH is M1913, which is purchased from Asahi Kasei Corporation, Japan. The lubricant is paraffin wax, and the light stabilizer is light stabilizer 770. The antioxidant CPL is the butylated product of p-cresol and dicyclopentadiene, and the antioxidant DLTP is dilauryl thiodipropionate. Embodiment 1: The embodiment provides a production process of a bending-resistant ABS composite material, which comprises the following process steps: Step 1: 2 parts of maleic anhydride are dissolved in 10 parts of deionized water by mass fraction, 3 parts of ammonia water are added, and after being treated at 180℃ for 3h, the mixture is dissolved in N,N-dimethylformamide, filtered, precipitated with ethanol, washed, mixed with ethanol, 10 parts of urea-containing sodium ethoxide solution is added and the pH of the system is adjusted to 10, after being heated at 50℃ for 10h, the pH of the system is adjusted to 7, filtered and dried to obtain modified polyaspartic acid; the concentration of urea in the urea-containing sodium ethoxide solution is 0.4g / L; Step 2: 1.5 parts of carboxymethyl cellulose are placed in 100 parts of deionized water, continuously stirred for 2h, 1.5 parts of modified polyaspartic acid and 2.5 parts of calcium chloride are added and stirred to mix, 8 parts of short carbon fiber is added and stirred for 30min, 200 parts of sodium carbonate solution is added and stirred to react for 1h, then filtered, washed and dried to obtain modified short carbon fiber; the modified short carbon fiber and SEBS-g-MAH are mixed according to a mass ratio of 5:5, then melt-extruded at a temperature of 220℃, and pelletized to obtain a reinforcing auxiliary material; the concentration of sodium carbonate solution is 10mg / mL; Step 3: 1.5 parts of antioxidant CPL and 2.5 parts of DLTP are mixed, heated in a water bath at 85℃ for 5min, then 0.5 parts of potassium oleate is added and premixed for 5min, and then 2.5 parts of 10% potassium hydroxide solution and 2 parts of deionized water are added and stirred for 20min to obtain an antioxidant emulsion; Step 4: 0.06 parts of glucose, 0.04 parts of sodium pyrophosphate are placed in 20mL deionized water and stirred, 0.001 parts of ferrous sulfate, 0.1 parts of potassium hydroxide and 10 parts of polybutadiene latex are added, stirred in a water bath at 65℃ for 30min, then 0.05 parts of benzene hydroperoxide, 6 parts of styrene and 4 parts of acrylonitrile are added and reacted for 0.5h, then the temperature is raised to 75℃ and reacted for 1h, the temperature is lowered to 60℃, 4 parts of antioxidant emulsion is added and stirred for 20min, then poured into 100 parts of sulfuric acid solution, stirred for 10min, then the temperature is raised to 100℃ and treated for 5min, then the material is filtered out and dried to obtain an antioxidant auxiliary material; the sulfuric acid solution is composed of 2 parts of concentrated sulfuric acid and 100 parts of deionized water; Step 5: 100 parts of ABS resin, 12 parts of SAN resin, 25 parts of reinforcing auxiliary material, 20 parts of antioxidant auxiliary material, 1.5 parts of lubricant and 1.5 parts of light stabilizer are mixed by high-speed stirring at a speed of 1200r / min for 10min, then melt-extruded in a double-screw extruder, the screw rotation speed is 30r / min, and the temperature of each section is set to 198, 203, 208, 218, 228 and 238℃, respectively, then pelletized and dried to obtain a bending-resistant ABS composite material.

[0009] Embodiment 2: The embodiment provides a production process of the bending-resistant ABS composite material, which comprises the following process steps: Step 1: 2 parts of maleic anhydride are dissolved in 10 parts of deionized water by mass fraction, 3 parts of ammonia water are added, and after being treated at 180℃ for 3h, the mixture is dissolved in N,N-dimethylformamide, filtered, precipitated with ethanol, washed, mixed with ethanol, 10 parts of urea-containing sodium ethoxide solution is added and the pH of the system is adjusted to 10, after being heated at 50℃ for 10h, the pH of the system is adjusted to 7, filtered and dried to obtain modified polyaspartic acid; the concentration of urea in the urea-containing sodium ethoxide solution is 0.4g / L; Step 2: 1.5 parts of carboxymethyl cellulose are placed in 100 parts of deionized water, continuously stirred for 2h, 1.5 parts of modified polyaspartic acid and 2.5 parts of calcium chloride are added and stirred to mix, 8 parts of short carbon fiber is added and stirred for 20min, 200 parts of sodium carbonate solution is added and stirred to react for 1h, then filtered, washed and dried to obtain modified short carbon fiber; the modified short carbon fiber and SEBS-g-MAH are mixed according to a mass ratio of 5:5, then melt-extruded at a temperature of 220℃, and cut into particles to obtain a reinforcing auxiliary material; the concentration of the sodium carbonate solution is 10mg / mL; Step 3: 1.5 parts of antioxidant CPL and 2.5 parts of DLTP are mixed, heated in a water bath at 85℃ for 5min, then 0.5 parts of potassium oleate is added and premixed for 5min, and then 2.5 parts of 10% potassium hydroxide solution and 2 parts of deionized water are added and stirred for 30min to obtain an antioxidant emulsion; Step 4: 0.06 parts of glucose, 0.04 parts of sodium pyrophosphate are placed in 20mL deionized water and stirred, 0.001 parts of ferrous sulfate, 0.1 parts of potassium hydroxide and 10 parts of polybutadiene latex are added, stirred in a water bath at 65℃ for 30min, then 0.05 parts of benzene hydroperoxide, 6 parts of styrene and 4 parts of acrylonitrile are added and continue to react for 0.5h, then the temperature is raised to 75℃ and reacted for 1h, the temperature is lowered to 60℃, 4 parts of antioxidant emulsion is added and stirred for 20min, then poured into 100 parts of sulfuric acid solution, stirred for 10min, then the temperature is raised to 95℃ and treated for 6min, then the material is filtered out and dried to obtain an antioxidant auxiliary material; the sulfuric acid solution is composed of 2 parts of concentrated sulfuric acid and 100 parts of deionized water; Step 5: 100 parts of ABS resin, 12 parts of SAN resin, 25 parts of reinforcing auxiliary material, 20 parts of antioxidant auxiliary material, 1.5 parts of lubricant and 1.5 parts of light stabilizer are mixed by high-speed stirring at a speed of 1200r / min for 10min, then melt-extruded in a double-screw extruder, the screw rotation speed is 30r / min, the temperature of each section is set to 202, 208, 213, 223, 233 and 240℃, and the particles are cut and dried to obtain the bending-resistant ABS composite material.

[0010] Embodiment 3: The embodiment provides a production process of the bending-resistant ABS composite material, which comprises the following process steps: Step 1: 2 parts of maleic anhydride are dissolved in 10 parts of deionized water by mass fraction, 3 parts of ammonia water are added, and after being treated at 180℃ for 3h, the mixture is dissolved in N,N-dimethylformamide, filtered, precipitated with ethanol, washed, mixed with ethanol, 10 parts of urea-containing sodium ethoxide solution is added and the pH of the system is adjusted to 10, after being heated at 50℃ for 10h, the pH of the system is adjusted to 7, filtered and dried to obtain modified polyaspartic acid; the concentration of urea in the urea-containing sodium ethoxide solution is 0.4g / L; Step 2: 1.5 parts of carboxymethyl cellulose are placed in 100 parts of deionized water, continuously stirred for 3h, 1.5 parts of modified polyaspartic acid and 2.5 parts of calcium chloride are added and stirred to mix, 8 parts of short carbon fiber is added and stirred for 30min, 200 parts of sodium carbonate solution is added and stirred to react for 2h, then filtered, washed and dried to obtain modified short carbon fiber; the modified short carbon fiber and SEBS-g-MAH are mixed according to a mass ratio of 5:5, then melt-extruded at a temperature of 220℃, and cut into particles to obtain a reinforcing auxiliary material; the concentration of the sodium carbonate solution is 10mg / mL; Step 3: 1.5 parts of antioxidant CPL and 2.5 parts of DLTP are mixed, heated in a water bath at 85℃ for 5min, then 0.5 parts of potassium oleate is added and premixed for 5min, and then 2.5 parts of 10% potassium hydroxide solution and 2 parts of deionized water are added and stirred for 30min to obtain an antioxidant emulsion; Step 4: 0.06 parts of glucose, 0.04 parts of sodium pyrophosphate are placed in 20mL deionized water and stirred, 0.001 parts of ferrous sulfate, 0.1 parts of potassium hydroxide and 10 parts of polybutadiene latex are added, stirred in a water bath at 65℃ for 30min, then 0.05 parts of benzene hydroperoxide, 6 parts of styrene and 4 parts of acrylonitrile are added and reacted for 0.5h, then the temperature is raised to 75℃ and reacted for 1h, the temperature is lowered to 60℃, 4 parts of antioxidant emulsion is added and stirred for 20min, then poured into 100 parts of sulfuric acid solution, stirred for 10min, then the temperature is raised to 100℃ and treated for 5min, then the material is filtered out and dried to obtain an antioxidant auxiliary material; the sulfuric acid solution is composed of 2 parts of concentrated sulfuric acid and 100 parts of deionized water; Step 5: 100 parts of ABS resin, 12 parts of SAN resin, 25 parts of reinforcing auxiliary material, 20 parts of antioxidant auxiliary material, 1.5 parts of lubricant and 1.5 parts of light stabilizer are mixed by high-speed stirring at a speed of 1300r / min for 10min, then melt-extruded in a double-screw extruder, the screw rotation speed is 30r / min, and the temperature of each section is set to 200, 205, 210, 220, 230 and 240℃, respectively, then cut and dried to obtain the bending-resistant ABS composite material.

[0011] Comparative Example 1: As a control experiment of Example 3, short carbon fibers were directly blended with SEBS-g-MAH; including the following process steps: Step 1: The short carbon fibers and SEBS-g-MAH were mixed in a mass ratio of 5:5, and then melt-extruded at a temperature of 220°C to obtain a reinforcing auxiliary material; Step 2: 1.5 parts of antioxidant CPL and 2.5 parts of DLTP were mixed, heated in a water bath at 85°C for 5 min, then 0.5 parts of potassium oleate was added and premixed for 5 min, and then 2.5 parts of a 10% potassium hydroxide solution and 2 parts of deionized water were added under stirring for 30 min to obtain an antioxidant emulsion; Step 3: 0.06 parts of glucose, 0.04 parts of sodium pyrophosphate were stirred in 20 mL of deionized water, 0.001 parts of ferrous sulfate, 0.1 parts of potassium hydroxide and 10 parts of polybutadiene latex were added, stirred in a water bath at 65°C for 30 min, then 0.05 parts of benzene hydroperoxide, 6 parts of styrene and 4 parts of acrylonitrile were added and reacted for 0.5 h, then the temperature was raised to 75°C and reacted for 1 h, then the temperature was lowered to 60°C, 4 parts of antioxidant emulsion was added and stirred for 20 min, then poured into 100 parts of sulfuric acid solution, stirred for 10 min, then the temperature was raised to 100°C and treated for 5 min, then the material was filtered and dried to obtain an antioxidant auxiliary material; the sulfuric acid solution was composed of 2 parts of concentrated sulfuric acid and 100 parts of deionized water; Step 4: 100 parts of ABS resin, 12 parts of SAN resin, 25 parts of reinforcing auxiliary material, 20 parts of antioxidant auxiliary material, 1.5 parts of lubricant and 1.5 parts of light stabilizer were mixed at a stirring speed of 1300 r / min for 10 min, then melt-extruded in a twin-screw extruder, the screw speed was 30 r / min, the temperature of each section was set to 200, 205, 210, 220, 230 and 240°C, and then pelletized and dried to obtain a bending-resistant ABS composite material.

[0012] Comparative Example 2: As a control experiment of Example 3, no modified polyaspartic acid was added, including the following process steps: Step 1: 1.5 parts of carboxymethyl cellulose was added to 100 parts of deionized water and stirred for 3 h, then 2.5 parts of calcium chloride was added and stirred to mix, then 8 parts of short carbon fibers was added and stirred for 30 min, then 200 parts of sodium carbonate solution was added and stirred to react for 2 h, then filtered, washed and dried to obtain modified short carbon fibers; the modified short carbon fibers and SEBS-g-MAH were mixed in a mass ratio of 5:5, and then melt-extruded at a temperature of 220°C to obtain a reinforcing auxiliary material; the concentration of the sodium carbonate solution was 10 mg / mL; Step 2: 1.5 parts of antioxidant CPL and 2.5 parts of DLTP were mixed in mass parts, heated in a water bath at 85°C for 5 min, then 0.5 parts of potassium oleate was added and premixed for 5 min, and then 2.5 parts of 10% potassium hydroxide solution and 2 parts of deionized water were added simultaneously under stirring for 30 min to obtain an antioxidant emulsion; Step 3: 0.06 parts of glucose, 0.04 parts of sodium pyrophosphate were added to 20 mL of deionized water and stirred, 0.001 parts of ferrous sulfate, 0.1 parts of potassium hydroxide and 10 parts of polybutadiene latex were added, stirred in a water bath at 65°C for 30 min, then 0.05 parts of cumene hydroperoxide, 6 parts of styrene and 4 parts of acrylonitrile were added and reacted for 0.5 h, then the temperature was raised to 75°C and reacted for 1 h, then the temperature was lowered to 60°C, 4 parts of antioxidant emulsion was added and stirred for 20 min, then poured into 100 parts of sulfuric acid solution, stirred for 10 min, then the temperature was raised to 100°C and treated for 5 min, then the material was filtered out and dried to obtain an antioxidant auxiliary material; the sulfuric acid solution was composed of 2 parts of concentrated sulfuric acid and 100 parts of deionized water; Step 4: 100 parts of ABS resin, 12 parts of SAN resin, 25 parts of reinforcing auxiliary material, 20 parts of antioxidant auxiliary material, 1.5 parts of lubricant and 1.5 parts of light stabilizer were mixed at a rotation speed of 1300 r / min for 10 min, then melted and extruded in a twin-screw extruder, the screw rotation speed was 30 r / min, and the temperature of each section was set to 200, 205, 210, 220, 230 and 240°C, then the pellets were dried to obtain a bending-resistant ABS composite material.

[0013] Comparative Example 3: As a control experiment of Example 3, antioxidant CPL and DLTP were directly added to step 3 for blending, including the following process steps: Step 1: 2 parts of maleic anhydride were dissolved in 10 parts of deionized water by stirring, 3 parts of ammonia water were added, and then the system was treated at 180°C for 3 h, then the system was stirred and dissolved in N,N-dimethylformamide, then filtered, precipitated with ethanol, washed, mixed with ethanol, added 10 parts of sodium ethoxide solution containing urea and adjusted the pH of the system to 10, then heated at 50°C for 10 h, then adjusted the pH of the system to 7, then filtered and dried to obtain modified polyaspartic acid; the concentration of urea in the sodium ethoxide solution containing urea was 0.4 g / L; Step 2: 1.5 parts of carboxymethyl cellulose was added to 100 parts of deionized water and stirred for 3 h, then 1.5 parts of modified polyaspartic acid and 2.5 parts of calcium chloride were added and stirred to mix, then 8 parts of short carbon fiber was added and stirred for 30 min, then 200 parts of sodium carbonate solution was added and stirred to react for 2 h, then filtered, washed and dried to obtain modified short carbon fiber; the modified short carbon fiber and SEBS-g-MAH were mixed in a mass ratio of 5:5, then melted and extruded at a temperature of 220°C, and then the pellets were obtained; the concentration of sodium carbonate solution was 10 mg / mL. Step 3: 0.06 parts of glucose, 0.04 parts of sodium pyrophosphate were stirred in 20 mL of deionized water, 0.001 parts of ferrous sulfate, 0.1 parts of potassium hydroxide and 10 parts of polybutadiene latex were added, after stirring in water bath at 65℃ for 30 min, 0.05 parts of hydrogen peroxide cumene, 6 parts of styrene, 4 parts of acrylonitrile were added, and the reaction was continued for 0.5 h, then the temperature was raised to 75℃ and reacted for 1 h, then the temperature was lowered to 60℃, 0.6 parts of antioxidant CPL and 1 part of antioxidant DLTP were added, stirred for 20 min, then poured into 100 parts of sulfuric acid solution, stirred for 10 min, then the temperature was raised to 100℃ and treated for 5 min, then the material was filtered out and dried to obtain the antioxidant auxiliary material; the sulfuric acid solution was composed of 2 parts of concentrated sulfuric acid and 100 parts of deionized water; Step 4: 100 parts of ABS resin, 12 parts of SAN resin, 25 parts of reinforcing auxiliary material, 20 parts of antioxidant auxiliary material, 1.5 parts of lubricant and 1.5 parts of light stabilizer were mixed at a speed of 1300 r / min for 10 min, then they were put into a double screw extruder for melt extrusion, the screw rotation speed was 30 r / min, and the temperature of each section was set to 200, 205, 210, 220, 230 and 240℃, respectively, then the granules were dried to obtain the anti-bending ABS composite material.

[0014] Test experiment 1. Bending property: the ABS composite materials prepared in Examples 1-3 and Comparative Examples 1-3 were injection molded to obtain samples with a size of 100 mm x 12.5 mm x 2 mm, according to the standard of ASTM D7264, the three-point bending method was used, and the Z100 type testing machine was used to test the bending strength, and the data were recorded in Table 1; 2. Impact property: the ABS composite materials prepared in Examples 1-3 and Comparative Examples 1-3 were injection molded to obtain notched samples with a size of 80 mm x 10 mm x 4 mm, a cantilever beam impact testing machine was used, and the test was carried out according to GB / T 1843-2008, and the data were recorded in Table 1; 3. Mechanical property test after thermal oxidation aging: according to GB / T 7141-2008, after thermal aging in a 90℃ thermal aging oven for 1000 h, the tensile strength and impact strength were tested, and the data were recorded in Table 1; Table 1 Conclusion: From the data of the above table, it can be seen that example 3 achieves more excellent mechanical properties; comparative example 1, as a control experiment of example 3, directly blends the short carbon fiber with SEBS-g-MAH, resulting in a significant decrease in bending and impact properties; comparative example 2, as a control experiment of example 3, does not add modified polyaspartic acid, which also causes the mechanical properties of the composite material to decrease; and comparative example 3, as a control experiment of example 3, changes the addition method of the antioxidant, resulting in a significant decrease in the mechanical properties of the composite material after thermal oxidation.

[0015] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A clothes hanger anti-bending ABS composite material, characterized in that, The raw material components include: 100-120 parts of ABS resin, 10-15 parts of SAN resin, 20-30 parts of reinforcing auxiliary material, 20-25 parts of antioxidant auxiliary material, 0.5-1.5 parts of lubricant and 1-2 parts of light stabilizer.

2. The anti-bending ABS composite material for clothes hanger according to claim 1, characterized in that, The preparation steps of the reinforcing auxiliary material are: Step s1: maleic anhydride is dissolved in deionized water under stirring, ammonia water is added, and after being treated at 180-200℃ for 3-4h, it is dissolved in N,N-dimethylformamide under stirring, then filtered, precipitated with ethanol, washed, mixed with ethanol under stirring, sodium ethoxide solution containing urea is added and the pH of the system is adjusted to 10, heated at 45-50℃ for 8-10h, then the pH of the system is adjusted to 7, filtered and dried to obtain modified polyaspartic acid; Step s2: carboxymethyl cellulose is placed in deionized water and stirred for 2-3h, then modified polyaspartic acid and calcium chloride are added and stirred to mix, short carbon fibers are added and stirred for 20-30min, then sodium carbonate solution is added and stirred for 0.5-2h, then filtered, washed and dried to obtain modified short carbon fibers; Step s3: the modified short carbon fibers and SEBS-g-MAH are mixed and melt-extruded at a temperature of 220-240℃, then granulated to obtain the reinforcing auxiliary material.

3. The anti-bending ABS composite material for clothes hanger according to claim 2, characterized in that, The modified polyaspartic acid prepared in step s1 includes the following raw material components: 8-10 parts of maleic anhydride, 10-15 parts of ammonia water and 15-25 parts of urea.

4. The anti-bending ABS composite material for clothes hanger according to claim 2, characterized in that, The modified short carbon fibers prepared in step s2 include the following raw material components: 1.5-2.0 parts of carboxymethyl cellulose, 1.5-2.0 parts of modified polyaspartic acid, 2-2.5 parts of calcium chloride, 5-10 parts of short carbon fibers and 2-2.5 parts of sodium carbonate.

5. The anti-bending ABS composite material for clothes hanger according to claim 2, characterized in that, The mass ratio of the modified short carbon fibers to SEBS-g-MAH in step s3 is (2-10):

5.

6. The anti-bending ABS composite material for clothes hanger according to claim 1, characterized in that, The preparation steps of the antioxidant auxiliary material are: glucose and sodium pyrophosphate are stirred in deionized water, ferrous sulfate, potassium hydroxide and polybutadiene latex are added, and stirred in a water bath at 60-65℃ for 20-30min, then cumene hydroperoxide, styrene and acrylonitrile are added and reacted for 0.5h, then the temperature is raised to 70-75℃ and reacted for 1-2h, then the temperature is lowered to 60℃, antioxidant emulsion is added and stirred for 20-30min, then poured into a sulfuric acid solution, stirred for 5-10min, then the temperature is raised to 95-100℃ and treated for 5-8min, then the product is filtered and dried to obtain the antioxidant auxiliary material.

7. The anti-bending ABS composite material for clothes hanger according to claim 1, characterized in that, The mass ratio of polybutadiene latex, styrene, acrylonitrile and antioxidant emulsion is 10:3:2:(4-5).

8. The anti-bending ABS composite material for clothes hanger according to claim 1, wherein, The preparation steps of the antioxidant emulsion are: antioxidant CPL and antioxidant DLTP are mixed, heated in a water bath at 85℃ for 2-5min, then potassium oleate is added and premixed for 5min, then potassium hydroxide solution and deionized water are added under stirring and stirred for 20-30min to obtain the antioxidant emulsion; the mass percentage of CPL in the antioxidant emulsion is 15-20%, and the mass percentage of DLTP is 20-25%.

9. A process for the production of a kink-resistant ABS composite material for clothes hangers according to any one of claims 1-8, characterized by, The process comprises the following steps: high-speed stirring ABS resin, SAN resin, reinforcing auxiliary materials, antioxidant auxiliary materials, lubricants and light stabilizers, then melting extruding in a double screw extruder, granulating and drying to obtain the anti-bending ABS composite material.

10. The process for producing a clothes hanger anti-buckling ABS composite material according to claim 9, characterized in that, The process parameters of high-speed stirring are as follows: the rotating speed is 1200-1300 r / min, and the time is 5-10 min; the temperature of the first section is 198-202 ℃, the temperature of the second section is 203-208 ℃, the temperature of the third section is 208-215 ℃, the temperature of the fourth section is 218-223 ℃, the temperature of the fifth section is 228-233 ℃, and the temperature of the sixth section is 235-240 ℃; the screw rotating speed is 30-40 r / min.

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