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Flame-retardant polycarbonate material for laser marking and preparation method and application thereof

A flame retardant polycarbonate and laser marking technology, applied in the field of polymer materials, can solve the problem that the technology has not received enough attention, and achieve the effect of reducing the probability of explosion points, enhancing dielectric properties, and high fullness

Active Publication Date: 2021-02-02
广州合成材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, taking into account the marking effect and dielectric properties at the same time is the focus of the development of communication equipment shell materials in the future, but related technologies have not received enough attention

Method used

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  • Flame-retardant polycarbonate material for laser marking and preparation method and application thereof
  • Flame-retardant polycarbonate material for laser marking and preparation method and application thereof
  • Flame-retardant polycarbonate material for laser marking and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1～4

[0044] See Table 1 for the raw material composition of the flame-retardant polycarbonate material laser marked in Examples 1-4.

[0045] The flame retardant polycarbonate material preparation method of embodiment 1~4 is:

[0046] 1) According to the composition in Table 1, the toughening agent, flame retardant, lubricant, anti-aging additive, anti-dripping agent, laser marking additive and titanium dioxide were mixed for 5 minutes at a speed of 300 r / min by a mixer to obtain Mixture;

[0047] 2) Blend the mixture, polycarbonate pellets and polycarbonate powder, and feed the resulting blend into a twin-screw extruder (the temperature of each zone is within the range of 220°C to 290°C, and the speed of the main machine is 300r / min ~450r / min) extruded and granulated to obtain laser-marked flame-retardant polycarbonate material.

Embodiment 2

[0067] The difference between Example 2 and Comparative Example 3 is that Comparative Example 3 did not add a silsesquioxane-type organosilicon flame retardant. It can be seen that the introduction of a silsesquioxane-type organosilicon flame retardant can reduce the dielectric constant and dielectric constant of the material. electrical loss.

[0068] The difference between Examples 1, 2, 3, 4 and Comparative Examples 1 and 2 is that Comparative Example 1 has only adopted PC pellets, and Comparative Example 2 has only adopted PC powder. Compared with Examples, it can be seen that the introduction of powder helps It is used to improve the flame retardant performance of the material and the effect of laser marking.

[0069] The difference between Examples 1, 2, 3, 4 and Comparative Example 1 is that the amount of laser marking aid added in Examples 1-4 is less than that of Comparative Example 1, and the examples contain powder. It can be seen that after the powder is introduce...

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Abstract

The invention discloses a flame-retardant polycarbonate material for laser marking and a preparation method and application of the flame-retardant polycarbonate material. The flame-retardant polycarbonate material comprises the following components: polycarbonate resin, a toughening agent, a flame retardant, a lubricating agent, an anti-aging auxiliary agent, an anti-dripping agent, a laser marking auxiliary agent and titanium dioxide, wherein the polycarbonate resin is composed of PC powder and PC granules, and the flame retardant comprises a sulfonate flame retardant and an organosilicon flame retardant. Meanwhile, the invention also discloses a preparation method and application of the flame-retardant polycarbonate material. According to the invention, the PC resin granules and the PC resin powder are adopted so that the laser marking auxiliary agent can be effectively supported, the resin and the auxiliary agent are fully contacted and adhered, the dispersion effect of the auxiliary agent is better, and the modified PC resin can be produced in an energy-saving manner. Besides, the low-polarity organic silicon flame retardant is introduced so that the dosage of the sulfonate flame retardant is reduced, the dielectric property of the material is enhanced, the probability of explosion point generation is reduced, and the marking effect is improved.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a laser-marked flame-retardant polycarbonate material and a preparation method and application thereof. Background technique [0002] Polycarbonate (PC for short) is a synthetic thermoplastic resin polymerized from bisphenol, phosgene and its derivatives. PC has excellent heat resistance, transparency, mechanical properties, and dimensional stability, and is widely used in electronics, electrical, construction, automobile, light industry and other fields. Therefore, with the rapid popularization of my country's new generation of mobile communication technology (that is, 5G technology) and supporting equipment, more and more PC materials will be used to prepare the casing of 5G equipment. [0003] Laser marking is a technology that uses the thermal effect of the laser to ablate the surface material of the object to leave a permanent mark. Compared with tradi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L83/04C08K13/02C08K3/22C08K5/42C08K3/32
CPCC08L69/00C08L2201/02C08K2003/2248C08K2003/2255C08K2003/324C08K2003/2241C08L83/04C08K13/02C08K3/22C08K5/42C08K3/32
Inventor 莫锦鹏麦伟宗李景
Owner 广州合成材料研究院有限公司
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