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CN-121991500-A - Nylon composite material and preparation method thereof, electronic connector and electronic equipment

CN121991500ACN 121991500 ACN121991500 ACN 121991500ACN-121991500-A

Abstract

The application belongs to the technical field of nylon materials for electronic connectors, and relates to a nylon composite material, an electronic connector and electronic equipment, wherein the nylon composite material comprises, by weight, 50-80 parts of a nylon material, 1-10 parts of a toughening agent, 0.1-5 parts of a nucleating agent, 0.1-5 parts of a chain extender, 10-40 parts of reinforcing fibers, 5-20 parts of a flame retardant, 0.1-5 parts of an antioxidant and 0.1-5 parts of a lubricant. The nylon material with high temperature resistance is compounded with toughening agent, nucleating agent, chain extender, reinforcing fiber, flame retardant, antioxidant and lubricant in certain proportion to form the nylon composite material, and the toughness of the nylon material is improved through the toughening agent on one hand, and the crystallinity of the nylon material is improved through the nucleating agent on the other hand, and the molecular weight of the nylon material is improved through the chain extender, so that the nylon material with high molecular weight and high crystallinity has low water absorption rate. Thus, the nylon composite material has high temperature resistance, low water absorption and high toughness.

Inventors

  • ZHAO TIPENG
  • XIA HONGTUO

Assignees

  • 广州视源电子科技股份有限公司

Dates

Publication Date
20260508
Application Date
20241105

Claims (11)

  1. 1. The nylon composite material is characterized by comprising the following components in parts by weight: 50-80 parts of nylon material; 1-10 parts of a toughening agent; 5-20 parts of a flame retardant; 10-40 parts of reinforcing fibers; 0.1-5 parts of nucleating agent; 0.1-5 parts of chain extender; 0.1-5 parts of an antioxidant; 0.1-5 parts of lubricant.
  2. 2. The nylon composite of claim 1 wherein the toughening agent is grafted with maleic anhydride.
  3. 3. The nylon composite of claim 2, wherein the maleic anhydride has a grafting ratio of 2% -5%.
  4. 4. The nylon composite of claim 3, wherein the maleic anhydride has a grafting ratio of 3% to 4%.
  5. 5. The nylon composite of claim 1, wherein the toughening agent is selected from one or more of polyolefin elastomers, low density polyethylene, tripropylene rubber, and ethylene vinyl acetate copolymers.
  6. 6. The nylon composite of claim 1, further comprising 5-15 parts of a flaky mineral filler.
  7. 7. The nylon composite of claim 6 wherein the platy mineral filler is selected from one or more of talc, barium sulfate, mica, platy graphite, kaolin, platy nitride and platy metal oxide.
  8. 8. The nylon composite of claim 7, wherein the particle size of the flaky mineral filler in the longitudinal direction is 1 μm to 100 μm and the particle size in the width direction is 1 μm to 30 μm.
  9. 9. A method for preparing the nylon composite of any one of claims 1-8, comprising: Weighing the nylon material, the toughening agent, the flame retardant, the nucleating agent, the chain extender, the antioxidant and the lubricant, sequentially adding the nylon material, the toughening agent, the flame retardant, the nucleating agent, the chain extender, the antioxidant and the lubricant into a blender, and uniformly blending to prepare a premixed material; Feeding the premixed material into an extruder through a main feeding port, feeding the reinforcing fibers into the extruder through a side feeding port, and carrying out melt blending and particle extraction on the premixed material and the reinforcing fibers through the extruder to obtain the nylon composite material.
  10. 10. An electronic connector comprising the nylon composite of any one of claims 1-8.
  11. 11. An electronic device comprising the electronic connector of claim 10.

Description

Nylon composite material and preparation method thereof, electronic connector and electronic equipment Technical Field The application belongs to the technical field of nylon materials for electronic connectors, and particularly relates to a nylon composite material, a preparation method thereof, an electronic connector and electronic equipment. Background The electronic connector is used in combination with a PIN terminal for connecting two or more electronic devices in an electronic apparatus to transmit electrical signals or power. During assembly, the electronic connector is soldered to the PCB board along with other electronic components. The ambient temperature required for the PCB board soldering process is high, for example, the temperature of the reflow soldering process is about 270 ℃. As such, materials for electronic connectors are required to have good high temperature resistance. At present, high temperature resistant materials such as semi-aromatic polyamides can meet the welding temperature. However, some high-temperature-resistant materials have higher cost and cannot meet the requirement of cost control, some high-temperature-resistant materials have higher water absorption rate, absorbed water is vaporized in the welding process, foaming and swelling of the connector are easy to occur, and some high-temperature-resistant materials have poor toughness, so that the connector is easy to break at weak places. Therefore, it is necessary to develop a material for electronic connectors which is resistant to high temperature, has low water absorption, has high toughness, and can be manufactured at a low cost. Disclosure of Invention In view of this, some embodiments of the present application provide a nylon composite material, a method for preparing the same, an electronic connector and an electronic device, where the nylon composite material has high temperature resistance, low water absorption and high toughness, and also has low cost. In a first aspect, the embodiment of the application provides a nylon composite material, which comprises the following components in parts by weight: 50-80 parts of nylon material; 1-10 parts of a toughening agent; 0.1-5 parts of nucleating agent; 0.1-5 parts of chain extender; 10-40 parts of reinforcing fibers; 5-20 parts of a flame retardant; 0.1-5 parts of an antioxidant; 0.1-5 parts of lubricant. In the embodiment, the high-temperature resistant nylon material is synergistically compounded with a toughening agent, a nucleating agent, a chain extender, reinforcing fibers, a flame retardant, an antioxidant and a lubricant in specific parts to form a nylon composite material, wherein on one hand, the toughness of the nylon material is improved through the toughening agent, and on the other hand, the crystallinity of the nylon material is improved through the nucleating agent, and the molecular weight of the nylon material is improved through the chain extender, so that the nylon material with high molecular weight and high crystallinity has low water absorption. In addition, the fiber, the flame retardant, the antioxidant and the lubricant are synergistically enhanced, and the flame retardance, the heat resistance and the mechanical property are improved. Therefore, the nylon composite material has high temperature resistance, low water absorption and high toughness, and also has good flame retardance. It is worth noting that nylon composite materials with the above components are readily available and have lower cost. In some embodiments, the toughening agent is grafted with maleic anhydride. In the embodiment, the maleic anhydride is combined on the toughening agent through a chemical bond, the maleic anhydride is a polar group, and the nylon material is a polar polymer, so that the maleic anhydride is used for connecting the toughening agent and the nylon material, the compatibility between the toughening agent and the nylon material can be effectively improved, and the toughness of the nylon material is improved. In addition, the maleic anhydride is used for connecting the toughening agent and the nylon material, so that the molecular weight of the nylon material can be increased, and the water absorption rate can be reduced. In addition, under the condition that the reinforcing fiber is glass fiber, the groups of maleic anhydride and amino groups on the surface of the glass fiber can be subjected to chemical reaction so as to connect the nylon material and the glass fiber, so that the binding force of the nylon material and the glass fiber can be effectively improved, and the mechanical property can be improved. In some embodiments, the grafting ratio of maleic anhydride is 2% -5%, preferably 3% -4%. Without intending to be limited by any theory or explanation, the inventors have unexpectedly discovered that a grafting ratio in this range allows good compatibility between the toughening agent and the nylon material, such that the nylon material maintains