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Preparation method of anti-dripping agent for high-transparency polycarbonate thin-walled workpiece

A technology of polycarbonate and anti-drip agent, applied in the field of preparation of anti-drip agent, can solve the problem that the transparency of polycarbonate parts is greatly affected, and achieves no reduction in transparency, good nucleophilic performance, and anti-drip properties. The effect of falling effect

Active Publication Date: 2020-03-24
深圳市弘祥光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Polycarbonate is one of the main varieties of engineering plastics. With the increasing development of industries such as automobiles and electronic communications, people not only have higher and higher requirements for the flame retardancy of polycarbonate parts, but also require polycarbonate in many applications. Parts maintain good light transmission. The anti-dripping agent prepared by the above patents and existing technologies has a great influence on the transparency of polycarbonate parts, which cannot meet the above requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A preparation method of an anti-dripping agent for highly transparent polycarbonate thin-walled parts, the operation steps are:

[0020] According to the number of parts by mass, 45 parts of styrene, 14 parts of acrylonitrile, 0.05 parts of vinyl ferrocene, 0.1 part of tributyltin methacrylate, 0.05 parts of polyoxyethylene octylphenol ether-10, 0.01 Add 80 parts of sodium lauryl sulfate and 80 parts of pure water into the pre-emulsification tank, stir for 30 minutes to make a pre-emulsion; then add 120 parts of surface-modified melamine cyanurate dispersion, 0.2 parts of Add acid, 20 parts of pre-emulsion and 40 parts of pure water into the reactor, mix and stir evenly, add 0.05 parts of initiator into the reactor, control the temperature at 40°C, and add the remaining pre-emulsion dropwise to In the reaction kettle, the dropwise addition is completed within 90 minutes, then add 0.5 parts of initiator, control the temperature at 70°C, continue the reaction for 3 hours,...

Embodiment 2

[0027] A preparation method of an anti-dripping agent for highly transparent polycarbonate thin-walled parts, the operation steps are:

[0028] According to the number of parts by mass, 48 ​​parts of styrene, 17 parts of acrylonitrile, 0.1 part of vinyl ferrocene, 0.3 part of tributyltin methacrylate, 0.08 part of polyoxyethylene octylphenol ether-10, 0.02 Add 150 parts of sodium lauryl sulfate and 110 parts of pure water into the pre-emulsification tank, stir for 42 minutes to make a pre-emulsion; then add 150 parts of surface-modified melamine cyanurate dispersion, 0.3 part of Add acid, 28 parts of pre-emulsion and 50 parts of pure water into the reactor, mix and stir evenly, add 0.08 parts of initiator into the reactor, control the temperature at 55°C, and add the remaining pre-emulsion dropwise to In the reaction kettle, the dropwise addition is completed within 120 minutes, then add 1 part of initiator, control the temperature at 75°C, continue the reaction for 4 hours, f...

Embodiment 3

[0035] A preparation method of an anti-dripping agent for highly transparent polycarbonate thin-walled parts, the operation steps are:

[0036]According to the number of parts by mass, 65 parts of styrene, 26 parts of acrylonitrile, 0.3 parts of vinyl ferrocene, 0.8 parts of tributyltin methacrylate, 0.15 parts of polyoxyethylene octylphenol ether-10, 0.05 parts Add 180 parts of sodium lauryl sulfate and 140 parts of pure water to the pre-emulsification kettle, stir for 60 minutes to make a pre-emulsion; then add 180 parts of surface-modified melamine cyanurate dispersion, 0.7 parts of Acid, 60 parts of pre-emulsion and 70 parts of pure water are added to the reaction kettle, after mixing and stirring, 0.1 part of initiator is added to the reaction kettle, the temperature is controlled at 70°C, and the remaining pre-emulsion is added dropwise to In the reaction kettle, the dropwise addition is completed within 150 minutes, then add 3 parts of initiator, control the temperature...

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Abstract

The invention relates to the field of chemical engineering, in particular to a preparation method of an anti-dripping agent for a high-transparency polycarbonate thin-walled workpiece. According to the preparation method of the anti-dripping agent for the high-transparency polycarbonate thin-walled workpiece, disclosed by the invention, a melamine cyanurate dry material is treated by adopting plasma, free radicals and active groups are generated on the surface of the melamine cyanurate dry material, hydroxyl grafting is carried out at the same time, and the grafting reaction efficiency is high; when the modified melamine cyanurate dry material is polymerized and grafted by polystyrene and acrylonitrile, the modified melamine cyanurate dry material has better affinity, is more completely coated, has better nucleophilic property with a polycarbonate material, and does not influence the transparency of the material.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a preparation method of an anti-dripping agent for highly transparent polycarbonate thin-walled parts. Background technique [0002] During the burning process of plastic products, in addition to burning themselves, other combustibles will be dripped and ignited, causing the fire to spread, which often has more serious consequences than the burning of plastic products themselves. Therefore, in the flame retardant process of polymers, it is not enough to only add flame retardants, and it is often necessary to add additives to prevent the polymer from dripping during combustion. Anti-dripping agent products are special plastic additives that can be added to thermoplastics at a lower dosage to improve the anti-dripping performance of plastics in flame-retardant formulations. [0003] 201910762299.7 relates to a modified PTFE anti-dripping agent, the anti-dripping agent is composed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F220/44C08F230/04C08F8/42C08L69/00C08L25/08
CPCC08F212/08C08F220/44C08F230/04C08F8/42C08L69/00C08L2201/02C08L43/00
Inventor 马红霞刘东
Owner 深圳市弘祥光电科技有限公司
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