Search

CN-122011663-A - ABS plastic particles with high electric conduction, heat conduction and high flame retardance and preparation method thereof

CN122011663ACN 122011663 ACN122011663 ACN 122011663ACN-122011663-A

Abstract

The invention discloses high-electric-conductivity heat-conductivity high-flame-retardance ABS plastic particles and a preparation method thereof, and belongs to the technical field of preparation of high polymer materials. The plastic particles comprise, by weight, 70-85 parts of ABS resin, 1-5 parts of graphene, 10-20 parts of flame retardant, 2-5 parts of compatilizer, 3-6 parts of toughening agent, 0.1-1 part of antioxidant and 0.5-2 parts of other auxiliary agents. The preparation method comprises the steps of raw material pretreatment, premixing, melt blending, granulation, cooling and post-treatment. According to the invention, through the synergistic effect of the graphene and the halogen-free flame retardant, excellent electrical conductivity, thermal conductivity and flame retardance are realized under the condition of low graphene addition, and meanwhile, good mechanical properties are maintained, so that the halogen-free flame retardant is suitable for the fields requiring high comprehensive properties, such as electronic equipment shells, automobile parts and the like.

Inventors

  • LI YAN
  • Chen lianqiang
  • WU HUAHAI
  • ZHANG ZHITAO
  • SHI QINGFENG
  • WANG XINYONG
  • ZHOU DAKE
  • CHEN SHIDONG

Assignees

  • 浙江昊杨新能源科技有限公司

Dates

Publication Date
20260512
Application Date
20260212

Claims (10)

  1. 1. The ABS plastic particles with high electric conduction, heat conduction and high flame retardance are characterized by comprising the following components in parts by weight: 70-85 parts of ABS resin, 1-5 parts of graphene, 10-20 parts of flame retardant, 2-5 parts of compatilizer, 3-6 parts of toughening agent, 0.1-1 part of antioxidant and 0.5-2 parts of other auxiliary agents; The graphene is reduced graphene oxide, and the specific surface area is more than or equal to 500m 2 /g.
  2. 2. The high-electric-conductivity high-flame-retardance ABS plastic particle of claim 1, wherein the flame retardant is a halogen-free flame retardant and comprises antimony trioxide and decabromodiphenyl ethane in a mass ratio of 1 (2-5).
  3. 3. The high-electric-thermal-conductivity high-flame-retardance ABS plastic particle of claim 1, wherein the compatilizer comprises maleic anhydride grafted ABS and polyethylene grafted maleic anhydride, and the toughening agent comprises methyl methacrylate-butadiene-styrene copolymer and acrylic toughening agent.
  4. 4. The high electrical and thermal conductivity, high flame retardant ABS plastic particles of claim 1 wherein the antioxidant comprises antioxidant 1010, antioxidant 168.
  5. 5. The high electrical and thermal conductivity, high flame retardant ABS plastic particles of claim 1 wherein the other adjuvants comprise a lubricant comprising calcium stearate and/or a dispersant comprising ethylene bis stearamide.
  6. 6. A method for preparing high-electric-conductivity high-flame-retardance ABS plastic particles, which is used for preparing the high-electric-conductivity high-flame-retardance ABS plastic particles according to any one of claims 1 to 5, and is characterized by comprising the following steps: S1, pretreatment of raw materials, S2, premixing, S3, melt blending, S4, granulation and cooling, and S5, post treatment.
  7. 7. The method for preparing the ABS plastic particles with high electric conductivity and heat conductivity and high flame retardance according to claim 6, wherein in the step S1, the raw material pretreatment comprises the steps of drying graphene, ABS resin, compatilizer, antioxidant and other auxiliary agents.
  8. 8. The method for preparing the high-electric-conductivity heat-conductivity high-flame-retardance ABS plastic particles according to claim 6, wherein in the step S2, the premixing comprises the steps of adding ABS resin, graphene, flame retardant, compatilizer, toughening agent, antioxidant and other auxiliary agents into a high-speed mixer according to the formula proportion, and mixing for 10-15 min at 500-1000 rpm.
  9. 9. The method for preparing the ABS plastic particles with high electric conductivity and heat conductivity and high flame retardance according to claim 6, wherein in the step S3, the melt blending comprises the steps of feeding the premixed material into a double-screw extruder for melt blending, processing at 180-220 ℃, screw rotating speed at 260-360 rpm, and vacuum degassing to remove volatile matters.
  10. 10. The method for preparing high-conductivity high-flame-retardance ABS plastic particles according to claim 6, wherein in the step S4, the granulating and cooling comprises the steps of cooling the melt-blended extruded strips through a water tank, and then granulating and molding.

Description

ABS plastic particles with high electric conduction, heat conduction and high flame retardance and preparation method thereof Technical Field The invention relates to the technical field of high polymer materials, in particular to ABS plastic particles with high electric conductivity, high heat conductivity and high flame retardance and a preparation method thereof. Background ABS is a thermoplastic polymer plastic which is easy to process, has good strength and toughness, and is widely used in various fields. With the high requirements of market products, higher requirements, such as high electric conduction, heat conduction and high flame retardance, are put on ABS plastics in specific occasions. At present, some technologies are used for preparing the conductive ABS plastic, but the problems of poor mechanical property and poor conductive and heat-conductive effects caused by poor compatibility of graphene and an ABS matrix exist, or the material has single function and unsatisfactory flame-retardant effect, so that the application of the conductive and heat-retardant ABS plastic in the field of conductive and flame-retardant products is limited. In addition, in industrial production, with the development of high frequency, antistatic and lightweight automobiles of electronic devices, the demands for comprehensive properties of plastic materials are increasingly increasing, in particular, electromagnetic shielding (EMI) efficiency (up to 30-60 dB), antistatic properties (surface resistivity of less than 10 10 Ω/sq) and high flame retardancy (UL 94V-0 level). Therefore, development of an ABS composite material having high electrical conductivity, high thermal conductivity, high flame retardance and excellent mechanical properties at low filler addition is needed. Disclosure of Invention The invention aims to provide high-electric-conductivity heat-conductivity high-flame-retardance ABS plastic particles, so as to solve the problems that the ABS plastic particles in the prior art are not conductive and have poor heat-conductivity and flame-retardance effects. The invention also aims to provide a preparation method of the ABS plastic particles with high electric conduction, heat conduction and flame retardance, which is used for preparing the ABS plastic with high electric conduction, heat conduction and flame retardance. In a first aspect, the invention provides high-electric-conductivity heat-conductivity high-flame-retardance ABS plastic particles, which comprise the following components in parts by weight: 70-85 parts of ABS resin, 1-5 parts of graphene, 10-20 parts of flame retardant, 2-5 parts of compatilizer, 3-6 parts of toughening agent, 0.1-1 part of antioxidant and 0.5-2 parts of other auxiliary agents; The graphene is reduced graphene oxide, and the specific surface area is more than or equal to 500m 2/g. According to the technical scheme, the ABS resin is used as a basic matrix, excellent processing fluidity and mechanical strength of the ABS resin provide good formability and structural support for the composite material, 1-5 parts of reduced graphene oxide is added, a high specific surface area of at least 500m 2/g of reduced graphene oxide can form a continuous electric conduction and heat conduction network with a nanoscale structure in the matrix rapidly, high-efficiency electric conduction and heat conduction under low addition quantity are achieved, a flame retardant and graphene cooperate to block combustion chain reaction, flame retardant efficiency can be improved by means of physical barrier effect of the graphene, interfacial tension of the graphene and the ABS matrix can be reduced by a compatilizer, graphene agglomeration is restrained, integrity of the electric conduction and heat conduction network is ensured, toughness reduction caused by filler addition can be made up by the toughener, thermal oxidative degradation in a processing process is respectively delayed by an antioxidant and other auxiliary agents, and the dispersibility of components is improved, and finally, the synergy of high electric conduction and heat conduction, high flame retardance and excellent mechanical property is achieved. Preferably, the ABS resin is of a high flow grade, which means the weight of material flowing out of a specific instrument per unit time. Preferably, the number of layers of the reduced graphene oxide is less than or equal to 10. Preferably, the flame retardant is a halogen-free flame retardant and comprises antimony trioxide and decabromodiphenyl ethane in a mass ratio of 1 (2-5). More preferably, the halogen-free flame retardant comprises antimony trioxide and decabromodiphenyl ethane in a mass ratio of 1:3. Preferably, the compatibilizer comprises maleic anhydride grafted ABS and polyethylene grafted maleic anhydride. Preferably, the toughening agent comprises a methyl methacrylate-butadiene-styrene copolymer, and an acrylate toughening agent. Preferably, the antioxidants include a