A macromolecular chain extender and its preparation method, and an anti-aging recycled ABS material and its preparation method

Abstract

The present invention provides a macromolecular chain extender and its preparation method, and an anti-aging recycled ABS material and its preparation method, which relate to the technical field of ABS recycling. The macromolecular chain extender provided by the present invention comprises the following raw materials for preparation in parts by mass: 100 parts of styrene-acrylonitrile copolymer, 1-10 parts of glycidyl methacrylate, 1-5 parts of α-methylstyrene, and 1-2 parts of initiator. The macromolecular chain extender provided by the present invention can effectively repair the rubber interface of ABS waste. By using the macromolecular chain extender provided by the present invention to regenerate and modify ABS waste, the obtained recycled ABS material can have both good anti-aging performance and mechanical properties.

Description

Technical Field

[0001] The present invention relates to the technical field of ABS recycling, and particularly relates to a macromolecular chain extender and a preparation method thereof, and an anti-aging recycled ABS material and a preparation method thereof. Background Art

[0002] ABS resin is a composite material with high gloss, chemical resistance and low temperature resistance, and has been applied to various fields such as household appliances, automobiles, and pipes. As a result, a large amount of ABS waste has been generated. Currently, there are various methods for treating ABS waste, among which the modification and recycling of ABS waste is the most effective utilization method at present. For the recycling of ABS resin, it is particularly important to ensure the recovery of the physical properties of its waste. ABS resin is a "sea-island" structure in which butadiene rubber particles are dispersed in a continuous phase of acrylonitrile-styrene resin (SAN). However, during the aging process, the "sea-island" structure will separate, resulting in a decrease in the impact performance of the ABS material and a yellowing of the color. The performance of waste ABS deteriorates severely after aging, making its recycling very difficult. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a macromolecular chain extender and a preparation method thereof, and an anti-aging recycled ABS material and a preparation method thereof. Using the macromolecular chain extender provided by the present invention to regenerate and modify ABS waste can enable the obtained recycled ABS material to have both good anti-aging performance and mechanical properties.

[0004] In order to achieve the above invention purpose, the present invention provides the following technical solutions:

[0005] The present invention provides a macromolecular chain extender, which comprises the following raw materials for preparation in parts by mass:

[0006]

[0007] Preferably, the melt index of the styrene-acrylonitrile copolymer is 30-40 g / 10 min.

[0008] Preferably, the initiator includes di-tert-butyl peroxide, (1,1,4,4-tetramethyl-2-butyn-1,4-diyl) di-tert-butyl peroxide, dicumyl peroxide and 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane.

[0009] The present invention provides a preparation method of the macromolecular chain extender as described in the above technical solution, which comprises the following steps:

[0010] Mix the styrene-acrylonitrile copolymer, glycidyl methacrylate, α-methylstyrene and the initiator, and carry out twin-screw melt extrusion to obtain the macromolecular chain extender.

[0011] Preferably, the twin-screw melt extrusion is provided with 10 temperature control zones, and the temperatures of the 10 temperature control zones are successively 180 - 210 °C, 180 - 210 °C, 180 - 220 °C, 180 - 220 °C, 180 - 220 °C, 180 - 220 °C, 180 - 220 °C, 180 - 220 °C, 180 - 220 °C, 180 - 220 °C; the screw speed of the twin-screw melt extrusion is 130 - 190 rpm.

[0012] The present invention provides an anti-aging recycled ABS material, comprising the following raw materials in parts by mass for preparation:

[0013] 100 parts of ABS waste,

[0014] 1 - 5 parts of a macromolecular chain extender,

[0015] The macromolecular chain extender is the macromolecular chain extender described in the above technical solution or the macromolecular chain extender prepared by the preparation method described in the above technical solution.

[0016] Preferably, the anti-aging recycled ABS material further comprises 1 - 5 parts of an odor eliminator and / or 1 - 5 parts of a lubricant.

[0017] Preferably, the lubricant comprises one or more of saturated hydrocarbon lubricants, metal soap lubricants, aliphatic phenolic lubricants, fatty acid lubricants, fatty alcohol lubricants, and silicone powder.

[0018] The present invention provides a preparation method of the anti-aging recycled ABS material described in the above technical solution, comprising the following steps:

[0019] Mix the raw materials including ABS waste and a macromolecular chain extender and perform twin-screw melt extrusion to obtain the anti-aging recycled ABS material.

[0020] Preferably, the twin-screw melt extrusion is provided with 10 temperature control zones, and the temperatures of the 10 temperature control zones are successively 180 - 230 °C, 180 - 230 °C, 210 - 230 °C, 210 - 230 °C, 200 - 230 °C, 200 - 230 °C, 220 - 230 °C, 220 - 230 °C, 220 - 230 °C, 220 - 230 °C; the screw speed of the twin-screw melt extrusion is 200 - 400 rpm.

[0021] The present invention provides a macromolecular chain extender, which comprises the following raw materials in parts by mass: 100 parts of styrene-acrylonitrile copolymer, 1-10 parts of glycidyl methacrylate, 1-5 parts of α-methylstyrene, and 1-2 parts of initiator. In the present invention, the linear molecular chain of styrene-acrylonitrile copolymer is used as the main chain segment of the macromolecular chain extender. The linear structure can penetrate through the shell SAN graft molecular chain on the surface of rubber particles, react with the carboxyl and hydroxyl groups on the surface of rubber particles, and graft on the surface of rubber particles to repair the phenomenon that the interfacial connection ability between rubber particles and the matrix resin SAN deteriorates due to aging. In the present invention, styrene-acrylonitrile copolymer is grafted with glycidyl methacrylate (SAG), so that the obtained macromolecular chain extender has multiple epoxy functional groups, which can effectively react with the hydroxyl and carboxyl groups formed by aging on the surface of rubber particles to form chemical bonds under the condition of no water generation, repair the aging layer on the surface of rubber particles, and no carbon-carbon double bond is introduced, improving the stability of rubber particles. In the present invention, a large number of styrene-acrylonitrile segments (SAN) are introduced into the styrene-acrylonitrile copolymer, which can effectively form a topological structure with the matrix resin segments, increase the compatibility between the two phases, and improve the mechanical properties and processing stability of the material. In the present invention, α-methylstyrene is used as the second monomer for grafting glycidyl methacrylate onto the styrene-acrylonitrile copolymer. Its low reactivity can effectively inhibit the self-polymerization of glycidyl methacrylate and the self-depolymerization of grafted chains, resulting in more grafting sites, improving the grafting efficiency of glycidyl methacrylate, and enhancing the effect of the macromolecular chain extender. At the same time, after introducing α-methylstyrene, it is difficult to change the molecular chain conformation, which can ensure that the macromolecular chain extender maintains its conformation during processing, prevent the situation that it cannot penetrate through the shell (the grafted layer on the surface of rubber particles) due to the curling of the molecular chain, and can effectively improve the heat resistance of the rubber phase, so that the overall heat resistance of the recycled ABS material is enhanced. The macromolecular chain extender provided by the present invention can effectively repair the rubber interface of ABS waste. Using the macromolecular chain extender provided by the present invention to regenerate and modify ABS waste can make the obtained recycled ABS material have both good anti-aging performance and mechanical properties.

[0022] The present invention provides a preparation method of the macromolecular chain extender described in the above technical solution, which comprises the following steps: mixing styrene-acrylonitrile copolymer, glycidyl methacrylate, α-methylstyrene and initiator, and carrying out twin-screw melt extrusion to obtain the macromolecular chain extender. The present invention uses the melt grafting method to prepare the macromolecular chain extender. After melt grafting, the linear structure of the linear molecular chain of styrene-acrylonitrile copolymer can still be maintained, ensuring the repair ability of the interfacial phase between rubber particles and the matrix resin SAN due to aging. In addition, using the melt grafting method to prepare the macromolecular chain extender can efficiently realize processing and production. Detailed implementation mode

[0023] The present invention provides a macromolecular chain extender, which comprises the following raw materials in parts by mass:

[0024]

[0025]

[0026] In the present invention, unless otherwise specified, the raw materials involved are commercially available products well-known to those skilled in the art.

[0027] In parts by mass, the macromolecular chain extender provided by the present invention comprises 100 parts of styrene-acrylonitrile copolymer (SAN). In the present invention, the melt index of the styrene-acrylonitrile copolymer is preferably 30-40 g / 10 min. The copolymerization ratio of the styrene-acrylonitrile copolymer grafted on the surface of rubber particles in ABS resin is generally 3:1, which is compatible with the styrene-acrylonitrile copolymer with a melt index of 30-40 g / 10 min. The styrene-acrylonitrile copolymer with such a melt index has good compatibility with the styrene-acrylonitrile copolymer on the surface of rubber particles and can achieve a good interfacial repair effect. The present invention uses the linear molecular chain of styrene-acrylonitrile copolymer as the main chain segment of the macromolecular chain extender. The linear structure can penetrate through the shell SAN grafted molecular chain on the surface of rubber particles, react with the carboxyl and hydroxyl groups on the surface of rubber particles, and graft on the surface of rubber particles to repair the phenomenon that the interfacial connection ability between rubber particles and the matrix resin SAN phase becomes poor due to aging; moreover, the present invention introduces a large number of styrene-acrylonitrile chain segments (SAN) with styrene-acrylonitrile copolymer, which can effectively form a topological structure with the SAN matrix resin chain segments, increase the compatibility of the two phases, and improve the mechanical properties and processing stability of the material.

[0028] Based on the mass parts of the styrene-acrylonitrile copolymer, the macromolecular chain extender provided by the present invention comprises 1-10 parts of glycidyl methacrylate, preferably 5-10 parts, and more preferably 8-10 parts. The present invention grafts glycidyl methacrylate onto the styrene-acrylonitrile copolymer, that is, the macromolecular chain extender provided by the present invention is a macromolecular chain extender of styrene-acrylonitrile copolymer grafted with glycidyl methacrylate, so that the macromolecular chain extender has multiple epoxy functional groups, can effectively react with the hydroxyl and carboxyl groups formed by the aging on the surface of rubber particles to form chemical bonds under the condition of no water generation, repair the aging layer on the surface of rubber particles, and no carbon-carbon double bonds are introduced, improving the stability of rubber particles.

[0029] Based on the mass parts of the styrene-acrylonitrile copolymer, the macromolecular chain extender provided by the present invention comprises 1-5 parts, preferably 1-3 parts, of α-methylstyrene. In the present invention, α-methylstyrene is used as the second monomer for grafting glycidyl methacrylate onto the styrene-acrylonitrile copolymer. Its low reactivity can effectively inhibit the self-polymerization of glycidyl methacrylate and the self-depolymerization of the grafted chain, increasing the grafting sites, improving the grafting efficiency of glycidyl methacrylate, and enhancing the effect of the macromolecular chain extender. Meanwhile, after introducing α-methylstyrene, it is difficult to change the molecular chain conformation, which can effectively improve the heat resistance of the rubber phase and enhance the overall heat resistance of the recycled ABS material.

[0030] Based on the mass parts of the styrene-acrylonitrile copolymer, the macromolecular chain extender provided by the present invention comprises 1-2 parts, preferably 1-1.5 parts, of an initiator. In the present invention, the initiator preferably comprises one or more of di-tert-butyl peroxide (DTBP), (1,1,4,4-tetramethyl-2-butyn-1,4-diyl) di-tert-butyl peroxide, dicumyl peroxide (DCP), and 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane (DHBP), more preferably a mixture of DHBP and DCP, and the mass ratio of DHBP to DCP is preferably 2:1.

[0031] ABS resin has a "sea-island" structure in which butadiene rubber particles are dispersed in a continuous phase of acrylonitrile-styrene resin (SAN). However, during the aging process, the "sea-island" structure will separate, resulting in a decrease in the impact performance and yellowing of the ABS material. Using the macromolecular chain extender provided by the present invention to re-graft the ABS waste can effectively improve the phase interface, thereby preventing and reducing the occurrence of phase separation, and endowing the recycled ABS material with good anti-aging performance and mechanical properties.

[0032] The present invention provides a preparation method of the macromolecular chain extender as described in the above technical solutions, comprising the following steps:

[0033] Mix the styrene-acrylonitrile copolymer, glycidyl methacrylate, α-methylstyrene, and the initiator, and conduct twin-screw melt extrusion to obtain the macromolecular chain extender.

[0034] In the present invention, the mixing time of the styrene-acrylonitrile copolymer, glycidyl methacrylate, α-methylstyrene and the initiator is preferably 5 to 20 minutes. In the present invention, the twin-screw melt extrusion is specifically carried out in a twin-screw extruder. The present invention has no special requirements for the twin-screw extruder, and a twin-screw extruder well-known to those skilled in the art can be used. In the present invention, the twin-screw melt extrusion is preferably provided with 10 temperature control zones, and the temperatures of the 10 temperature control zones are preferably 180 to 210 °C, 180 to 210 °C, 180 to 220 °C, 180 to 220 °C, 180 to 220 °C, 180 to 220 °C, 180 to 220 °C, 180 to 220 °C, 180 to 220 °C, 180 to 220 °C in sequence; the screw speed of the twin-screw melt extrusion is preferably 130 to 190 rpm. During the twin-screw melt extrusion process, the initiator attacks the double bond and α-hydrogen atom on the styrene-acrylonitrile copolymer, forms free radicals and undergoes a free radical polymerization reaction with glycidyl methacrylate and α-methylstyrene, and finally synthesizes a macromolecular chain extender with a small amount of branched chains. After the twin-screw melt extrusion, the obtained product is preferably subjected to devolatilization drying to obtain a macromolecular chain extender; the devolatilization drying is preferably flash devolatilization drying, the temperature of the flash devolatilization drying is preferably 85 °C, the pressure is preferably -1 MPa, and the time is preferably 2 to 3 hours.

[0035] The present invention uses a melt grafting method to prepare a macromolecular chain extender. The linear molecular chain of the SAN resin is used as the main chain segment, and the grafting sites are end groups and a small number of side sites. After melt grafting, it is still a linear structure and can penetrate through the shell SAN grafted molecular chain on the surface of the rubber particles, react with the carboxyl and hydroxyl groups on the surface of the rubber particles, and graft on the surface of the rubber particles to repair the phenomenon that the interfacial connection ability between the rubber particles and the matrix resin SAN deteriorates due to aging. The commonly used commercial material SAG chain extender is prepared by suspension polymerization. Acrylonitrile, styrene, and glycidyl methacrylate are polymerized in the form of monomers to form microspheres of unit copolymerization. The inside of the microspheres has a cross-linked structure and still exists in the form of microspheres when added to the ABS resin. Although it can also eliminate some of the carboxyl and hydroxyl groups on the surface of the rubber particles after aging, it does not have the ability to repair the interface between the rubber particles and the matrix resin, so it can only play an anti-aging effect. In addition, the present invention uses a melt grafting method to prepare a macromolecular chain extender, which can efficiently realize processing and production.

[0036] The present invention provides an anti-aging recycled ABS material, which comprises the following raw materials in parts by mass:

[0037] 100 parts of ABS waste,

[0038] 1 to 5 parts of macromolecular chain extender,

[0039] The macromolecular chain extender is the macromolecular chain extender described in the above technical solution or the macromolecular chain extender prepared by the preparation method described in the above technical solution.

[0040] In terms of parts by mass, the anti-aging recycled ABS material provided by the present invention includes 100 parts of ABS waste. In the present invention, the ABS waste preferably includes the recycled material of recycled waste ABS plastic parts; the specific preferred recycling method is: after sequentially cleaning and removing impurities and sorting by a color sorter for the waste ABS plastic parts, the primary selected ABS waste is obtained; the primary selected ABS waste is sequentially crushed and washed with monoethanolamine to obtain ABS crushed pieces; the ABS crushed pieces are sequentially washed with water, dehydrated and dried, and homogenized to obtain the recycled material. In the present invention, the washing with monoethanolamine is preferably carried out under stirring, the stirring speed is preferably 100 r / min, and the time is preferably 10 min. Through the washing with monoethanolamine, impurities such as glue and labels on the crushed pieces are washed away; the washing with water is preferably carried out under stirring, the stirring speed is preferably 50 r / min, and the time is preferably 5 min. After washing with water, the settled ABS crushed pieces are collected; the homogenization is specifically mechanical stirring. In the present invention, the melt index of the ABS waste is preferably ≥8 g / 10 min, and the notched impact strength is preferably ≥8 kJ / m 2 。

[0041] Based on the parts by mass of the ABS waste, the anti-aging recycled ABS material provided by the present invention includes 1 to 5 parts, preferably 3 to 5 parts, of a macromolecular chain extender. The macromolecular chain extender is the macromolecular chain extender described in the above technical solution or the macromolecular chain extender prepared by the preparation method described in the above technical solution. Using the macromolecular chain extender to regenerate and modify the ABS waste can effectively repair the rubber interface of the aged ABS waste.

[0042] Based on the mass parts of the ABS waste, the anti-aging recycled ABS material provided by the present invention preferably further includes 1 to 5 parts of deodorant and / or 1 to 5 parts of lubricant, preferably 2 to 3 parts respectively. The present invention has no special requirements for the deodorant, and any deodorant well-known to those skilled in the art can be used, such as one or several of chemical deodorants, microbial deodorants, nano deodorants, plant deodorants and composite deodorants. In the embodiments of the present invention, the deodorant is MP60 type deodorant (Baike (Tianjin) Silicide Technology Co., Ltd.). The present invention has no special requirements for the lubricant, and any lubricant well-known to those skilled in the art can be used, such as one or several of saturated hydrocarbon lubricants, metal soap lubricants, aliphatic phenolic lubricants, fatty acid lubricants, fatty alcohol lubricants and silicone powder. In the embodiments of the present invention, the lubricant is YY-502A lubricant. In the present invention, the specific function of the lubricant is to reduce the cohesion between polymer molecular chains, accelerate melting, reduce melt viscosity, extend processing life and improve fluidity.

[0043] The recycled ABS material provided by the present invention has both good anti-aging performance and mechanical properties.

[0044] The present invention provides a preparation method of the anti-aging recycled ABS material described in the above technical solution, including the following steps:

[0045] Mix the raw materials including ABS waste and macromolecular chain extender and carry out twin-screw melt extrusion to obtain the anti-aging recycled ABS material.

[0046] In the present invention, deodorant and / or lubricant are preferably added to the raw materials; the mixing of the raw materials is preferably carried out in a high-speed mixer, and the mixing time is preferably 5 to 20 min. In the present invention, the twin-screw melt extrusion is specifically carried out in a twin-screw extruder. In the present invention, the twin-screw melt extrusion is preferably provided with 10 temperature control zones, and the temperatures of the 10 temperature control zones are preferably 180 - 230 °C, 180 - 230 °C, 210 - 230 °C, 210 - 230 °C, 200 - 230 °C, 200 - 230 °C, 220 - 230 °C, 220 - 230 °C, 220 - 230 °C, 220 - 230 °C in sequence; the screw speed of the twin-screw melt extrusion is preferably 200 - 400 rpm. During the twin-screw melt extrusion process, the macromolecular chain extender penetrates into the two-phase interface of the butadiene rubber phase and the SAN resin phase of the ABS resin in the ABS waste, and the epoxy groups on it react with the aged carboxyl and hydroxyl groups on the surface of the rubber phase, and the carboxyl and hydroxyl groups are eliminated, thereby achieving the anti-aging effect.

[0047] The following is a detailed description of the macromolecular chain extender provided by the present invention, its preparation method, the anti-aging recycled ABS material and its preparation method in conjunction with embodiments, but they should not be construed as limiting the protection scope of the present invention.

[0048] In each embodiment, the styrene-acrylonitrile copolymer (SAN resin) is PN-117L100 from Chi Mei Industries Co., Ltd., and the melt index is 40 g / 10 min;

[0049] α-Methylstyrene is α-methylstyrene from Aite New Materials Co., Ltd., and the purity is 99.5%;

[0050] Glycidyl methacrylate is from Shanghai Deheng Chemical Co., Ltd., and the purity is 99%;

[0051] The initiators are DHBP (2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane) from Wuhan Lanaibai Pharmaceutical and Chemical Co., Ltd. and DCP (dicumyl peroxide) from Anhui Xiangyun Rubber and Plastic Co., Ltd.;

[0052] The deodorant is deodorant MP60 from Baike (Tianjin) Silicate Technology Co., Ltd.;

[0053] The lubricant is lubricant YY-502A from Guangzhou Yuantai Synthetic Materials Co., Ltd.

[0054] Example 1

[0055] A macromolecular chain extender is prepared as follows:

[0056] (1) Weigh each component by weight: 100 kg of SAN resin PN-117L100, 3 kg of α-methylstyrene, 5 kg of glycidyl methacrylate, 0.8 kg of initiator DHBP, and 0.4 kg of initiator DCP;

[0057] (2) Mix the above SAN resin, α-methylstyrene, glycidyl methacrylate and initiator for 5 - 20 min to obtain a mixed material;

[0058] (3) Carry out twin-screw melt extrusion on the mixed material in (2), control the screw speed at 130 - 190 rpm, and obtain the macromolecular chain extender through devolatilization and drying; the twin-screw extruder has 10 temperature control zones, the temperature of temperature control zones 1 - 2 is 180 - 210 °C, the temperature of temperature control zones 3 - 4 is 180 - 220 °C, the temperature of temperature control zones 5 - 6 is 180 - 220 °C, the temperature of temperature control zones 7 - 8 is 180 - 220 °C, the temperature of temperature control zones 9 - 10 is 180 - 220 °C, and the twin-screw extruder has a vacuum extraction port between temperature control zones 5 and 8.

[0059] An anti-aging recycled ABS material is prepared as follows:

[0060] (a) Wash and remove impurities from the ABS waste, and separate it by a color sorter; crush the ABS waste with a dry crusher having an inner filter screen of 15 mm; place the ABS crushed pieces in a water tank containing monoethanolamine cleaning agent, stir at a speed of 100 r / min for 10 min, and collect the ABS crushed pieces; transfer to a clear water tank, stir at a speed of 50 r / min for 5 min, then collect the sinking ABS crushed pieces, dehydrate, dry, and homogenize to obtain the ABS waste raw material;

[0061] (b) Weigh each component by weight: 100 kg of the ABS waste treated in step (a), 1 kg of the above-mentioned macromolecular chain extender, 2 kg of deodorant, and 2 kg of lubricant;

[0062] (c) Place the dried ABS waste crushed pieces, macromolecular chain extender, deodorant, and lubricant in a high-speed mixer, and obtain a mixed material after mixing for 5 - 20 min;

[0063] (d) Feed the above-mentioned mixed material into a twin-screw extruder through a feeding port. The twin-screw extruder has 10 temperature control zones. The temperature of temperature control zones 1 - 2 is 180 - 230 °C, the temperature of temperature control zones 3 - 4 is 210 - 230 °C, the temperature of temperature control zones 5 - 6 is 200 - 230 °C, the temperature of temperature control zones 7 - 8 is 220 - 230 °C, the temperature of temperature control zones 9 - 10 is 220 - 230 °C. The twin-screw extruder has a vacuum extraction port between temperature control zones 5 and 8. The screw speed is controlled at 200 - 400 rpm. After melting, extruding, and pelletizing, the recycled ABS material is obtained.

[0064] Example 2

[0065] A macromolecular chain extender is prepared as follows:

[0066] (1) Weigh each component by weight: 100 kg of SAN resin PN-117L1001, 3 kg of α-methylstyrene, 8 kg of glycidyl methacrylate, 0.8 kg of initiator DHBP, and 0.4 kg of initiator DCP;

[0067] (2) Mix the above-mentioned SAN resin, α-methylstyrene, glycidyl methacrylate, and initiator for 5 - 20 min to obtain a mixed material;

[0068] (3) Carry out twin-screw melt extrusion on the mixed materials in (2), control the screw speed at 130 - 190 rpm, and carry out devolatilization drying to obtain a macromolecular chain extender; the twin-screw extruder has 10 temperature control zones, the temperature of temperature control zones 1 - 2 is 180 - 210 °C, the temperature of temperature control zones 3 - 4 is 180 - 220 °C, the temperature of temperature control zones 5 - 6 is 180 - 220 °C, the temperature of temperature control zones 7 - 8 is 180 - 220 °C, the temperature of temperature control zones 9 - 10 is 180 - 220 °C, the twin-screw extruder has a vacuum extraction port between temperature control zones 5 and 8. [[ID=!]]

[0069] An anti-aging recycled ABS material is prepared as follows:

[0070] (a) Wash and remove impurities from the ABS waste, and sort it through a color sorter; crush the ABS waste with a dry crusher with an inner layer filter screen of 15 mm; place the ABS crushed pieces in a water tank containing monoethanolamine cleaning agent, stir at a speed of 100 r / min for 10 min, and collect the ABS crushed pieces; transfer them to a clear water tank, stir at a speed of 50 r / min for 5 min, then collect the sinking ABS crushed pieces, dehydrate, dry, and homogenize to obtain the ABS waste raw material. "

[0071] (b) Weigh each component by weight: 100 kg of the ABS waste treated in step (a), 1 kg of the above macromolecular chain extender, 2 kg of deodorant, and 2 kg of lubricant.

[0072] (c) Place the dried ABS waste crushed pieces, macromolecular chain extender, deodorant, and lubricant in a high-speed mixer, mix for 5 - 20 min to obtain mixed materials.

[0073] (d) Feed the above mixed materials into a twin-screw extruder through a feeding port. The twin-screw extruder has 10 temperature control zones. The temperature of temperature control zones 1 - 2 is 180 - 230 °C, the temperature of temperature control zones 3 - 4 is 210 - 230 °C, the temperature of temperature control zones 5 - 6 is 200 - 230 °C, the temperature of temperature control zones 7 - 8 is 220 - 230 °C, the temperature of temperature control zones 9 - 10 is 220 - 230 °C. The twin-screw extruder has a vacuum extraction port between temperature control zones 5 and 8. Control the screw speed at 200 - 400 rpm, and obtain recycled ABS materials through melt extrusion and pelletization.

[0074] Example 3

[0075] A macromolecular chain extender is prepared as follows:

[0076] (1) Weigh each component by weight: 100 kg of SAN resin PN - 117L100, 3 kg of α-methylstyrene, 10 kg of glycidyl methacrylate, 0.8 kg of initiator DHBP, and 0.4 kg of initiator DCP.

[0077] (2) Mix the above-mentioned SAN resin, α-methylstyrene, glycidyl methacrylate and initiator for 5 to 20 minutes to obtain a mixed material;

[0078] (3) Melt-extrude the mixed material in (2) with a twin-screw extruder, control the screw speed at 130 to 190 rpm, and perform devolatilization drying to obtain a macromolecular chain extender; the twin-screw extruder has 10 temperature control zones, the temperature of temperature control zones 1 to 2 is 180 to 210 °C, the temperature of temperature control zones 3 to 4 is 180 to 220 °C, the temperature of temperature control zones 5 to 6 is 180 to 220 °C, the temperature of temperature control zones 7 to 8 is 180 to 220 °C, the temperature of temperature control zones 9 to 10 is 180 to 220 °C, the twin-screw extruder has a vacuum extraction port between temperature control zones 5 to 8.

[0079] An anti-aging recycled ABS material is prepared as follows:

[0080] (a) Wash and remove impurities from the ABS waste, and separate it by a color sorter; crush the ABS waste with a dry crusher with an inner filter screen of 15 mm; place the ABS crushed pieces in a water tank filled with monoethanolamine cleaning agent, stir at a speed of 100 r / min for 10 minutes, and collect the ABS crushed pieces; transfer them to a clear water tank, stir at a speed of 50 r / min for 5 minutes, then collect the sinking ABS crushed pieces, dehydrate, dry, and homogenize to obtain ABS waste raw materials;

[0081] (b) Weigh each component by weight: 100 kg of the ABS waste treated in step (a), 1 kg of the above-mentioned macromolecular chain extender, 2 kg of deodorant, and 2 kg of lubricant;

[0082] (c) Place the dried ABS waste crushed pieces, macromolecular chain extender, deodorant and lubricant in a high-speed mixer, mix for 5 to 20 minutes to obtain a mixed material;

[0083] (d) Feed the above-mentioned mixed material into a twin-screw extruder through a feeding port. The twin-screw extruder has 10 temperature control zones. The temperature of temperature control zones 1 to 2 is 180 to 230 °C, the temperature of temperature control zones 3 to 4 is 210 to 230 °C, the temperature of temperature control zones 5 to 6 is 200 to 230 °C, the temperature of temperature control zones 7 to 8 is 220 to 230 °C, the temperature of temperature control zones 9 to 10 is 220 to 230 °C. The twin-screw extruder has a vacuum extraction port between temperature control zones 5 to 8, and the screw speed is controlled at 200 to 400 rpm. After melt-extrusion and pelletization, a recycled ABS material is obtained.

[0084] Example 4

[0085] A macromolecular chain extender is prepared as follows:

[0086] (1) Weigh each component by weight: 100 kg of SAN resin PN-117L100, 1 kg of α-methylstyrene, 10 kg of glycidyl methacrylate, 0.8 kg of initiator DHBP, and 0.4 kg of initiator DCP;

[0087] (2) Mix the above SAN resin, α-methylstyrene, glycidyl methacrylate, and initiator for 5 - 20 min to obtain a mixed material;

[0088] (3) Carry out twin-screw melt extrusion on the mixed material in (2), control the screw speed at 130 - 190 rpm, and carry out devolatilization drying to obtain a macromolecular chain extender; the twin-screw extruder has 10 temperature control zones, the temperature of temperature control zones 1 - 2 is 180 - 210 °C, the temperature of temperature control zones 3 - 4 is 180 - 220 °C, the temperature of temperature control zones 5 - 6 is 180 - 220 °C, the temperature of temperature control zones 7 - 8 is 180 - 220 °C, the temperature of temperature control zones 9 - 10 is 180 - 220 °C, the twin-screw extruder has a vacuum extraction port between temperature control zones 5 and 8.

[0089] An anti-aging recycled ABS material is prepared as follows:

[0090] (a) Clean and remove impurities from the ABS waste, and sort it through a color sorter; crush the ABS waste with a dry crusher with an inner filter screen of 15 mm; place the ABS crushed pieces in a water tank filled with monoethanolamine cleaning agent, stir at a speed of 100 r / min for 10 min, and collect the ABS crushed pieces; transfer them to a clear water tank, stir at a speed of 50 r / min for 5 min, then collect the sinking ABS crushed pieces, dehydrate, dry, and homogenize to obtain ABS waste raw materials;

[0091] (b) Weigh each component by weight: 100 kg of ABS waste treated in step (a), 1 kg of the above macromolecular chain extender, 2 kg of deodorant, and 2 kg of lubricant;

[0092] (c) Place the dried ABS waste crushed pieces, macromolecular chain extender, deodorant, and lubricant in a high-speed mixer, mix for 5 - 20 min to obtain a mixed material;

[0093] (d) Feed the above-mentioned mixed materials into a twin-screw extruder through the feeding port. The twin-screw extruder has 10 temperature control zones. The temperature of temperature control zones 1-2 is 180-230 °C, the temperature of temperature control zones 3-4 is 210-230 °C, the temperature of temperature control zones 5-6 is 200-230 °C, the temperature of temperature control zones 7-8 is 220-230 °C, and the temperature of temperature control zones 9-10 is 220-230 °C. The twin-screw extruder has a vacuum extraction port between temperature control zones 5 and 8. The screw speed is controlled at 200-400 rpm. After melting, extruding and pelletizing, recycled ABS materials are obtained.

[0094] Example 5

[0095] A macromolecular chain extender is prepared as follows:

[0096] (1) Weigh each component by weight: 100 kg of SAN resin PN-117L100, 3 kg of α-methylstyrene, 10 kg of glycidyl methacrylate, 0.8 kg of initiator DHBP, and 0.4 kg of initiator DCP;

[0097] (2) Mix the above-mentioned SAN resin, α-methylstyrene, glycidyl methacrylate and initiator for 5-20 min to obtain a mixed material;

[0098] (3) Twin-screw melt extrude the mixed material in (2), control the screw speed at 130-190 rpm, and obtain the macromolecular chain extender after devolatilization and drying; the twin-screw extruder has 10 temperature control zones. The temperature of temperature control zones 1-2 is 180-210 °C, the temperature of temperature control zones 3-4 is 180-220 °C, the temperature of temperature control zones 5-6 is 180-220 °C, the temperature of temperature control zones 7-8 is 180-220 °C, and the temperature of temperature control zones 9-10 is 180-220 °C. The twin-screw extruder has a vacuum extraction port between temperature control zones 5 and 8.

[0099] An anti-aging recycled ABS material is prepared as follows:

[0100] (a) Clean and remove impurities from ABS waste, and separate it by a color sorter; crush the ABS waste with a dry crusher with an inner filter screen of 15 mm; place the ABS crushed pieces in a water tank filled with monoethanolamine cleaning agent and stir at a speed of 100 r / min for 10 min, and collect the ABS crushed pieces; transfer them to a clear water tank, stir at a speed of 50 r / min for 5 min, and then collect the sinking ABS crushed pieces, dehydrate, dry and homogenize to obtain ABS waste raw materials;

[0101] (b) Weigh each component by weight: 100 kg of ABS waste treated in step (a), 5 kg of the above-mentioned macromolecular chain extender, 2 kg of deodorant, and 2 kg of lubricant;

[0102] (c) Place the dried ABS waste flakes, macromolecular chain extender, deodorant, and lubricant in a high-speed mixer, and obtain a mixed material after mixing for 5 - 20 minutes.

[0103] (d) Feed the above-mentioned mixed material into a twin-screw extruder through a feeding port. The twin-screw extruder has 10 temperature control zones. The temperature of temperature control zones 1 - 2 is 180 - 230 °C, the temperature of temperature control zones 3 - 4 is 210 - 230 °C, the temperature of temperature control zones 5 - 6 is 200 - 230 °C, the temperature of temperature control zones 7 - 8 is 220 - 230 °C, and the temperature of temperature control zones 9 - 10 is 220 - 230 °C. The twin-screw extruder has a vacuum extraction port between temperature control zones 5 and 8. The screw speed is controlled at 200 - 400 rpm. After melting and extrusion, pellets are obtained to get recycled ABS material.

[0104] Example 6

[0105] A macromolecular chain extender, the preparation process is as follows:

[0106] (1) Weigh each component by weight: 100 kg of SAN resin PN - 117L100, 3 kg of α-methylstyrene, 10 kg of glycidyl methacrylate, 0.8 kg of initiator DHBP, and 0.4 kg of initiator DCP.

[0107] (2) Mix the above-mentioned SAN resin, α-methylstyrene, glycidyl methacrylate, and initiator for 5 - 20 minutes to obtain a mixed material.

[0108] (3) Twin-screw melt extrude the mixed material in (2), control the screw speed at 130 - 190 rpm, and obtain the macromolecular chain extender through devolatilization and drying. The twin-screw extruder has 10 temperature control zones. The temperature of temperature control zones 1 - 2 is 180 - 210 °C, the temperature of temperature control zones 3 - 4 is 180 - 220 °C, the temperature of temperature control zones 5 - 6 is 180 - 220 °C, the temperature of temperature control zones 7 - 8 is 180 - 220 °C, and the temperature of temperature control zones 9 - 10 is 180 - 220 °C. The twin-screw extruder has a vacuum extraction port between temperature control zones 5 and 8.

[0109] An anti-aging recycled ABS material, the preparation process is as follows:

[0110] (a) Clean and remove impurities from the ABS waste, and sort it through a color sorter; use a dry crusher with an inner filter screen of 15 mm to crush the ABS waste; place the ABS flakes in a water tank containing monoethanolamine cleaning agent, stir at a speed of 100 r / min for 10 minutes, and collect the ABS flakes; transfer to a clean water tank, stir at a speed of 50 r / min for 5 minutes, and collect the sinking ABS flakes, dehydrate, dry, and homogenize to obtain the ABS waste raw material.

[0111] (b) Weigh each component by weight: 100 kg of ABS waste treated in step (a), 3 kg of the above-mentioned macromolecular chain extender, 2 kg of deodorant, and 2 kg of lubricant;

[0112] (c) Place the dried ABS waste chips, macromolecular chain extender, deodorant, and lubricant in a high-speed mixer, and obtain a mixed material after mixing for 5 - 20 min;

[0113] (d) Feed the above-mentioned mixed material into a twin-screw extruder through a feeding port. The twin-screw extruder has 10 temperature control zones. The temperature of temperature control zones 1 - 2 is 180 - 230 °C, the temperature of temperature control zones 3 - 4 is 210 - 230 °C, the temperature of temperature control zones 5 - 6 is 200 - 230 °C, the temperature of temperature control zones 7 - 8 is 220 - 230 °C, the temperature of temperature control zones 9 - 10 is 220 - 230 °C. The twin-screw extruder has a vacuum extraction port between temperature control zones 5 and 8. The screw speed is controlled at 200 - 400 rpm. After melting extrusion and pelletizing, a recycled ABS material is obtained.

[0114] Comparative Example 1

[0115] A recycled ABS material, the preparation process is as follows:

[0116] (1) Wash and remove impurities from the ABS waste, and sort it through a color sorter; crush the ABS waste with a dry crusher with an inner filter screen of 15 mm; place the ABS chips in a water tank containing monoethanolamine cleaning agent, stir at a speed of 100 r / min for 10 min, and collect the ABS chips; transfer to a clear water tank, stir at a speed of 50 r / min for 5 min, and collect the sinking ABS chips, dehydrate and dry, and homogenize to obtain ABS waste raw materials;

[0117] (2) Weigh each component by weight: 100 kg of ABS waste treated in step (1), 2 kg of deodorant, and 2 kg of lubricant;

[0118] (3) Place the dried ABS waste chips, deodorant, and lubricant in a high-speed mixer, and obtain a mixed material after mixing for 5 - 20 min;

[0119] (4) Feed the above-mentioned mixed materials into a twin-screw extruder through the feeding port. The twin-screw extruder has 10 temperature control zones. The temperature of temperature control zones 1-2 is 180-230 °C, the temperature of temperature control zones 3-4 is 210-230 °C, the temperature of temperature control zones 5-6 is 200-230 °C, the temperature of temperature control zones 7-8 is 220-230 °C, and the temperature of temperature control zones 9-10 is 220-230 °C. The twin-screw extruder has a vacuum extraction port between temperature control zones 5 and 8. The screw speed is controlled at 200-400 rpm. After melting and extrusion, pellets are obtained to get the recycled ABS material.

[0120] Comparative Example 2

[0121] A recycled ABS material, the preparation process is as follows:

[0122] (1) Wash and remove impurities from the ABS waste, and sort it through a color sorter; crush the ABS waste with a dry crusher with an inner layer filter screen of 15 mm; place the ABS crushed pieces in a water tank containing monoethanolamine cleaning agent, stir at a speed of 100 r / min for 10 min, and collect the ABS crushed pieces; transfer to a clear water tank, stir at a speed of 50 r / min for 5 min, then collect the sinking ABS crushed pieces, dehydrate and dry, and homogenize to obtain the ABS waste raw material;

[0123] (2) Weigh each component by weight: 100 kg of ABS waste treated in step (1), 0.5 kg of antioxidant Irganox 1010, 0.5 kg of antioxidant Irgafos 168, 2 kg of deodorant, and 2 kg of lubricant;

[0124] (3) Place the dried ABS waste crushed pieces, deodorant, antioxidant, and lubricant in a high-speed mixer, mix for 5-20 min to obtain the mixed materials;

[0125] (4) Feed the above-mentioned mixed materials into a twin-screw extruder through the feeding port. The twin-screw extruder has 10 temperature control zones. The temperature of temperature control zones 1-2 is 180-230 °C, the temperature of temperature control zones 3-4 is 210-230 °C, the temperature of temperature control zones 5-6 is 200-230 °C, the temperature of temperature control zones 7-8 is 220-230 °C, and the temperature of temperature control zones 9-10 is 220-230 °C. The twin-screw extruder has a vacuum extraction port between temperature control zones 5 and 8. The screw speed is controlled at 200-400 rpm. After melting and extrusion, pellets are obtained to get the recycled ABS material.

[0126] Comparative Example 3

[0127] A recycled ABS material, the preparation process is as follows:

[0128] (1) Wash and remove impurities from the ABS waste, and separate it by a color sorter; crush the ABS waste with a dry crusher with an inner filter screen of 15 mm; place the ABS crushed pieces in a water tank containing monoethanolamine cleaning agent, stir at a speed of 100 r / min for 10 min, and collect the ABS crushed pieces; transfer them to a clear water tank, stir at a speed of 50 r / min for 5 min, then collect the sinking ABS crushed pieces, dehydrate, dry, and homogenize to obtain the ABS waste raw material;

[0129] (2) Weigh each component by weight: 100 kg of the ABS waste treated in step (1), 1 kg of anti-yellowing agent SAG-008, 2 kg of deodorant, and 2 kg of lubricant;

[0130] (3) Place the dried ABS waste crushed pieces, anti-yellowing agent, deodorant, and lubricant in a high-speed mixer, and obtain a mixed material after mixing for 5 - 20 min;

[0131] (4) Feed the above mixed material into a twin-screw extruder through the feeding port. The twin-screw extruder has 10 temperature control zones. The temperature of temperature control zones 1 - 2 is 180 - 230 °C, the temperature of temperature control zones 3 - 4 is 210 - 230 °C, the temperature of temperature control zones 5 - 6 is 200 - 230 °C, the temperature of temperature control zones 7 - 8 is 220 - 230 °C, the temperature of temperature control zones 9 - 10 is 220 - 230 °C. The twin-screw extruder has a vacuum extraction port between temperature control zones 5 and 8. The screw speed is controlled at 200 - 400 rpm. After melting, extruding, and pelletizing, a recycled ABS material is obtained.

[0132] Comparative Example 4

[0133] A macromolecular chain extender, the preparation process is as follows:

[0134] (1) Weigh each component by weight: 100 kg of SAN resin PN-117L100, 3 kg of styrene, 10 kg of glycidyl methacrylate, 0.8 kg of initiator DHBP, and 0.4 kg of initiator DCP;

[0135] (2) Mix the above SAN resin, styrene, glycidyl methacrylate, and initiator for 5 - 20 min to obtain a mixed material;

[0136] (3)Melt-extrude the mixed materials in (2) with a twin-screw extruder, control the screw speed at 130 - 190 rpm, and obtain the macromolecular chain extender through devolatilization and drying; the twin-screw extruder has 10 temperature control zones, the temperature of temperature control zones 1 - 2 is 180 - 210 °C, the temperature of temperature control zones 3 - 4 is 180 - 220 °C, the temperature of temperature control zones 5 - 6 is 180 - 220 °C, the temperature of temperature control zones 7 - 8 is 180 - 220 °C, the temperature of temperature control zones 9 - 10 is 180 - 220 °C, and the twin-screw extruder has a vacuum extraction port between temperature control zones 5 and 8.

[0137] An anti-aging recycled ABS material is prepared as follows:

[0138] (a) Wash and remove impurities from the ABS waste, and sort it through a color sorter; crush the ABS waste with a dry crusher with an inner layer filter screen of 15 mm; place the ABS crushed pieces in a water tank containing monoethanolamine cleaning agent, stir at a speed of 100 r / min for 10 min, and collect the ABS crushed pieces; transfer them to a clear water tank, stir at a speed of 50 r / min for 5 min, then collect the sinking ABS crushed pieces, dehydrate, dry, and homogenize to obtain the ABS waste raw material.

[0139] (b) Weigh each component by weight: 100 kg of the ABS waste treated in step (a), 3 kg of the above macromolecular chain extender, 2 kg of deodorant, and 2 kg of lubricant.

[0140] (c) Place the dried ABS waste crushed pieces, macromolecular chain extender, deodorant, and lubricant in a high-speed mixer, mix for 5 - 20 min to obtain the mixed materials.

[0141] (d) Feed the above mixed materials into a twin-screw extruder through the feeding port. The twin-screw extruder has 10 temperature control zones. The temperature of temperature control zones 1 - 2 is 180 - 230 °C, the temperature of temperature control zones 3 - 4 is 210 - 230 °C, the temperature of temperature control zones 5 - 6 is 200 - 230 °C, the temperature of temperature control zones 7 - 8 is 220 - 230 °C, the temperature of temperature control zones 9 - 10 is 220 - 230 °C. The twin-screw extruder has a vacuum extraction port between temperature control zones 5 and 8. Control the screw speed at 200 - 400 rpm, and obtain the recycled ABS material through melt extrusion and pelletizing.

[0142] Comparative Example 5

[0143] A macromolecular chain extender is prepared as follows:

[0144] (1) Weigh each component by weight: 100 kg of SAN resin PN - 117L100, 10 kg of glycidyl methacrylate, 0.8 kg of initiator DHBP, and 0.4 kg of initiator DCP.

[0145] (2) Mix the above-mentioned SAN resin, styrene, glycidyl methacrylate and initiator for 5 to 20 minutes to obtain a mixed material;

[0146] (3) Melt-extrude the mixed material in (2) with a twin-screw extruder, control the screw speed at 130 to 190 rpm, and carry out devolatilization drying to obtain a macromolecular chain extender; the twin-screw extruder has 10 temperature control zones, the temperature of temperature control zones 1 to 2 is 180 to 210 °C, the temperature of temperature control zones 3 to 4 is 180 to 220 °C, the temperature of temperature control zones 5 to 6 is 180 to 220 °C, the temperature of temperature control zones 7 to 8 is 180 to 220 °C, the temperature of temperature control zones 9 to 10 is 180 to 220 °C, the twin-screw extruder has a vacuum extraction port between temperature control zones 5 and 8.

[0147] An anti-aging recycled ABS material is prepared as follows:

[0148] (a) Clean and remove impurities from the ABS waste, and sort it through a color sorter; crush the ABS waste with a dry crusher with an inner filter screen of 15 mm; place the ABS crushed pieces in a water tank containing monoethanolamine cleaning agent, stir at a speed of 100 r / min for 10 minutes, and collect the ABS crushed pieces; transfer to a clean water tank, stir at a speed of 50 r / min for 5 minutes, then collect the sinking ABS crushed pieces, dehydrate, dry, and homogenize to obtain the ABS waste raw material;

[0149] (b) Weigh each component by weight: 100 kg of the ABS waste treated in step (a), 3 kg of the above-mentioned macromolecular chain extender, 2 kg of deodorant, and 2 kg of lubricant;

[0150] (c) Place the dried ABS waste crushed pieces, macromolecular chain extender, deodorant and lubricant in a high-speed mixer, mix for 5 to 20 minutes to obtain a mixed material;

[0151] (d) Feed the above-mentioned mixed material into a twin-screw extruder through a feeding port. The twin-screw extruder has 10 temperature control zones. The temperature of temperature control zones 1 to 2 is 180 to 230 °C, the temperature of temperature control zones 3 to 4 is 210 to 230 °C, the temperature of temperature control zones 5 to 6 is 200 to 230 °C, the temperature of temperature control zones 7 to 8 is 220 to 230 °C, the temperature of temperature control zones 9 to 10 is 220 to 230 °C. The twin-screw extruder has a vacuum extraction port between temperature control zones 5 and 8, and the screw speed is controlled at 200 to 400 rpm. After melting extrusion and pelletizing, a recycled ABS material is obtained.

[0152] The performance tests were carried out on the recycled ABS materials prepared in Examples 1-6 and Comparative Examples 1-5. The detection standards for flexural strength and flexural modulus were GB / T 9341-2008, the detection standards for tensile strength and elongation at break were GB / T 1040.2-2006, the detection standard for IZOD notched impact strength was GB / T 19466.6-2009, and the detection standard for oxidation induction time was GB / T 19466.6-2009. The results are shown in Table 1:

[0153] Table 1 Performance tests of the recycled ABS materials prepared in Examples 1-6 and Comparative Examples 1-5

[0154]

[0155]

[0156] As can be seen from Table 1, compared with the commercially available antioxidants and anti-yellowing agents, the macromolecular chain extender provided by the present invention has a good phase interface repair effect, and can effectively improve the impact strength and anti-aging performance of the recycled ABS resin. At the same time, during the preparation of the macromolecular chain extender, α-methylstyrene used plays the role of a chain transfer agent, which improves the grafting efficiency of glycidyl methacrylate, and the phase interface repair ability of the recycled ABS resin is more prominent.

[0157] As can be seen from the above examples, the recycled ABS materials obtained by regenerating and modifying ABS waste with the macromolecular chain extender provided by the present invention have both good anti-aging performance and mechanical properties.

[0158] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A macromolecular chain extender, characterized in that, The preparation raw materials include the following parts by mass: The preparation method of the macromolecular chain extender includes the following steps: Mix styrene-acrylonitrile copolymer, glycidyl methacrylate, α-methylstyrene and an initiator, and carry out twin-screw melt extrusion to obtain the macromolecular chain extender.

2. The macromolecular chain extender according to claim 1, characterized in that The melt index of the styrene-acrylonitrile copolymer is 30-40 g / 10 min.

3. The macromolecular chain extender according to claim 1, characterized in that, The initiator includes one or more of di-tert-butyl peroxide, (1,1,4,4-tetramethyl-2-butyn-1,4-diyl) di-tert-butyl peroxide, dicumyl peroxide and 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane.

4. A method for preparing the macromolecular chain extender according to any one of claims 1 to 3, characterized in that, It includes the following steps: Mix styrene-acrylonitrile copolymer, glycidyl methacrylate, α-methylstyrene and an initiator, and carry out twin-screw melt extrusion to obtain the macromolecular chain extender.

5. The method according to claim 4, wherein The twin-screw melt extrusion is provided with 10 temperature control zones, and the temperatures of the 10 temperature control zones are 180-210°C, 180-210°C, 180-220°C, 180-220°C, 180-220°C, 180-220°C, 180-220°C, 180-220°C, 180-220°C, 180-220°C in sequence; the screw speed of the twin-screw melt extrusion is 130-190 rpm.

6. An anti-aging regenerated ABS material, characterized in that, The preparation raw materials include the following parts by mass: 100 parts of ABS waste, 1-5 parts of macromolecular chain extender, The macromolecular chain extender is the macromolecular chain extender described in any one of claims 1-3 or the macromolecular chain extender prepared by the method described in any one of claims 4-5.

7. The anti-aging and regenerative ABS material according to claim 6, characterized in that, It also includes 1-5 parts of deodorant and / or 1-5 parts of lubricant.

8. The anti-aging regenerated ABS material according to claim 7, characterized in that, The lubricant includes one or more of saturated hydrocarbon lubricants, metal soap lubricants, aliphatic phenolic lubricants, fatty acid lubricants, fatty alcohol lubricants and silicone powder.

9. A method for preparing the anti-aging and regenerated ABS material according to any one of claims 6 to 8, characterized in that, It includes the following steps: Mix the raw materials including ABS waste and macromolecular chain extender, and carry out twin-screw melt extrusion to obtain the anti-aging recycled ABS material.

10. The method according to claim 9, wherein The twin-screw melt extrusion is provided with 10 temperature control zones, and the temperatures of the 10 temperature control zones are 180-230°C, 180-230°C, 210-230°C, 210-230°C, 200-230°C, 200-230°C, 220-230°C, 220-230°C, 220-230°C, 220-230°C in sequence; the screw speed of the twin-screw melt extrusion is 200-400 rpm.

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