CN-122011664-A - PCR ABS modified material for sweeper and preparation method thereof

Abstract

The application relates to the technical field of recycling and regenerating waste ABS, and discloses a PCR ABS modified material for a sweeper and a preparation method thereof. The PCR ABS modified material for the sweeper comprises the raw material components of a PCR ABS material, a composite modifier, an antioxidant, a light stabilizer, an antiwear agent, an antistatic agent and a flame retardant, wherein the composite modifier is a compound of maleic anhydride grafted polypropylene and maleic anhydride grafted acrylonitrile-butadiene-styrene copolymer, and the mass ratio of the maleic anhydride grafted polypropylene to the maleic anhydride grafted acrylonitrile-butadiene-styrene copolymer is (2-4.5): 1. The preparation method of the application ensures that the prepared PCR ABS modified material has good mechanical property, wear resistance, impact resistance, antistatic property and aging resistance through the steps of pretreatment, sectional material mixing, melt blending, extrusion, post-treatment and curing.

Inventors

• CHEN LAIGEN
• ZENG YANGCHUN
• XIE TIAN

Assignees

• 广东国亨优合新材料股份有限公司

Dates

Publication Date

20260512

Application Date

20260303

Claims (10)

1. 1. The PCR ABS modified material for the sweeper is characterized by comprising the following raw material components of a PCR ABS material, a composite modifier, an antioxidant, a light stabilizer, an antiwear agent, an antistatic agent and a flame retardant; The composite modifier is a compound of maleic anhydride grafted polypropylene and maleic anhydride grafted acrylonitrile-butadiene-styrene copolymer, and the mass ratio of the maleic anhydride grafted polypropylene to the maleic anhydride grafted acrylonitrile-butadiene-styrene copolymer is (2-4.5): 1.
2. 2. The PCR ABS modified material for a sweeper according to claim 1, wherein the wear-resistant agent is at least one of polytetrafluoroethylene micropowder and polyethylene micropowder, and the particle size of the wear-resistant agent is 10-50 μm.
3. 3. The PCR ABS modifying material for a sweeper of claim 1 wherein the antistatic agent is selected from ethoxylated alkylamine quaternary ammonium salts or stearamidopropyl quaternary ammonium salts.
4. 4. The PCR ABS modified material for a sweeper according to claim 1, wherein the antioxidant is a compound of an antioxidant 1010, an antioxidant 3114 and an antioxidant 168, and the mass ratio of the antioxidant 1010, the antioxidant 3114 and the antioxidant 168 is (1-2): 0.3-0.6): 0.5-1.
5. 5. The PCR ABS modified material for a sweeper of claim 1 wherein the light stabilizer is a hindered amine light stabilizer.
6. 6. The PCR ABS modified material for a sweeper according to claim 1, wherein the flame retardant is a compound of montmorillonite and aluminum hydroxide surface-modified by a titanate coupling agent, and the mass ratio of montmorillonite to aluminum hydroxide surface-modified by the titanate coupling agent is (6-10): (1-3).
7. 7. The PCR ABS modified material for a sweeper according to any one of claims 1 to 6, which is characterized in that the raw materials comprise the following components in parts by weight: 65-90 parts of PCR ABS material; 4.5-12 parts of a composite modifier; 1.1-2.8 parts of an antioxidant; 1-3 parts of a light stabilizer; 3.7-5 parts of an antiwear agent; 0.5-3 parts of antistatic agent; 2-6 parts of a flame retardant.
8. 8. A method for preparing the PCR ABS modified material for a sweeper according to any one of claims 1 to 7, comprising the steps of: s1, preprocessing, namely carrying out ultrasonic cleaning, crushing and drying on a PCR ABS material; S2, sectional mixing, namely mixing the pretreated PCR ABS material, the compound modifier, the antioxidant, the light stabilizer and the flame retardant for the first time, and adding the wear-resistant agent and the antistatic agent for the second time to obtain a premix; S3, melt blending and extrusion, namely melt blending and extrusion are carried out on the premix to obtain melt strips; And S4, post-treatment and curing, namely cooling, granulating, screening and drying the melt strip, and then performing constant-temperature curing treatment to obtain the PCR ABS modified material for the sweeper.
9. 9. The method for preparing the PCR ABS modified material for the sweeper according to claim 8, wherein in the step S2, the temperature of the first section of mixing is 25-30 ℃ for 3-6 min, and the temperature of the second section of mixing is 40-60 ℃ for 5-10 min.
10. 10. The method for preparing a PCR ABS modified material for a sweeper according to claim 8, wherein in the step S3, the gradient temperature from the feed inlet to the front of the machine head is 180 ℃, 200 ℃, 215 ℃, 225 ℃, 230 ℃ and 225 ℃, the temperature of the machine head is 220 ℃ and the rotating speed is 350-450 rpm; in the step S4, the constant-temperature curing temperature is 60-80 ℃ and the time is 6-12 h.

Description

PCR ABS modified material for sweeper and preparation method thereof Technical Field The application relates to the technical field of recycling and regenerating waste ABS, in particular to a PCR ABS modified material for a sweeper and a preparation method thereof. Background At present, with the enhancement of environmental awareness, recycling of waste plastics has become an important way to reduce environmental pollution and save resources. ABS (acrylonitrile-butadiene-styrene copolymer) is widely used in housings and structural members of household appliances due to its good comprehensive mechanical properties, processing flowability and surface gloss. The PCR (Post-Consumer Recycled) ABS material, namely the Post-consumer recovered ABS material, has great significance in resource conservation and environmental protection due to strong recycling property, so the PCR (Post-Consumer Recycled) ABS material becomes a research hot spot. However, after the PCR ABS material is used, recovered and reprocessed for one or more times, the polymer chain is easy to break, crosslink or degrade, so that the original performance of the PCR ABS material is obviously reduced, such as mechanical properties of impact toughness, tensile strength and the like are greatly reduced, the thermal-oxidative aging resistance and ultraviolet aging resistance are weak, and the problems of embrittlement, color change and the like are easy to occur after long-term use. The conventional modification method mainly relies on blending with a high proportion of ABS new materials or adding expensive compatilizer, reinforcing agent and the like to recover part of the performance, but greatly sacrifices the environmental protection value and economy of the material and fails to fundamentally solve the problem of unstable performance of the PCR matrix caused by historical processing damage. As a household appliance product integrating precise mechanical, electronic and appearance design, the sweeping machine is used as a shell and an internal structural member of the household appliance product, and the shell and the internal structural member of the household appliance product not only require materials to have enough strength, rigidity and impact resistance to protect the internal element, but also need to have good toughness, wear resistance, antistatic property and the like. The high-content PCR ABS modified material in the prior art is difficult to simultaneously meet the severe performance requirements, particularly short plates exist in the aspects of wear resistance and antistatic property, and the high performance requirements of a sweeper on the material cannot be well met. Disclosure of Invention In order to at least overcome one of the problems in the prior art, the invention aims to provide a PCR ABS modified material for a sweeper, which takes a PCR ABS material, a composite modifier, an antioxidant, a light stabilizer, an anti-wear agent, an antistatic agent and a flame retardant as raw materials, wherein the composite modifier is a compound of maleic anhydride grafted polypropylene and maleic anhydride grafted acrylonitrile-butadiene-styrene copolymer, the mass ratio of the maleic anhydride grafted polypropylene to the maleic anhydride grafted acrylonitrile-butadiene-styrene copolymer is (2-4.5): 1, and the formed PCR ABS modified material for the sweeper has excellent rigidity and toughness, strong wear resistance, antistatic property, flame retardance and aging resistance, and meets the severe requirements of the sweeper on the PCR ABS modified material. The second purpose of the invention is to provide a preparation method of the PCR ABS modified material for the sweeper. For this purpose, the invention adopts the following technical scheme: The first aspect of the invention provides a PCR ABS modified material for a sweeper, which comprises the following raw materials of a PCR ABS material, a composite modifier, an antioxidant, a light stabilizer, an antiwear agent, an antistatic agent and a flame retardant, wherein the composite modifier is a compound of maleic anhydride grafted polypropylene and maleic anhydride grafted acrylonitrile-butadiene-styrene copolymer, and the mass ratio of the maleic anhydride grafted polypropylene to the maleic anhydride grafted acrylonitrile-butadiene-styrene copolymer is (2-4.5): 1. The PCR ABS material is used as a matrix in the raw material components of the PCR ABS modified material of the sweeper, and is complementary in function with components such as a composite modifier, an antioxidant, a light stabilizer, an anti-wear agent, an antistatic agent and the like, so that the recycling of waste plastics is effectively realized, and meanwhile, the problems of poor mechanical property, insufficient anti-aging effect, wear resistance, antistatic loss and the like of the traditional PCR ABS material are pertinently solved. The composite modifier adopts the raw material components of (2-4.5) th