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Polycarbonate and polycarbonate alloy modification special flame-retardant synergistic functional master batch, and preparation method thereof

A functional masterbatch, flame retardant and synergistic technology, applied in the field of polycarbonate and its alloy modified special flame retardant and synergistic functional masterbatch and its preparation, can solve the problem of damaged flame retardant effect, poor thermal stability, poor dispersion Uniformity and other issues, to achieve the effect of high surface charge density, improved flame retardant performance, and large specific surface area

Active Publication Date: 2020-01-10
江苏万纳普新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Another object of the present invention is to provide a method for preparing polycarbonate and its alloy modified special flame-retardant synergistic functional masterbatch, which uses multi-layer high-density flame-retardant synergistic materials to Engineering plastics such as carbonate oligomers are often coated with brominated flame retardants, and then the coated brominated flame retardants are compounded with flame retardant synergists, carrier resins and other additives to prepare flame retardant functional masterbatches. granule, a two-pronged approach to solve domestic tetrabromobisphenol A carbonate oligomers used as brominated flame retardants commonly used in PC and its alloys have poor thermal stability, easy to decompose during processing, easy to yellow, poor fluidity, uneven dispersion, flame retardant effect Defects such as damage

Method used

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  • Polycarbonate and polycarbonate alloy modification special flame-retardant synergistic functional master batch, and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0037] A special flame retardant synergistic functional masterbatch for modification of polycarbonate and its alloys, the quality ratio of raw materials is as follows:

[0038]

[0039] The preparation method of the above-mentioned functional masterbatch is as follows: Weigh all the raw materials according to the above-mentioned mass ratio requirements, put them into a high-speed mixer and mix them evenly, and then transfer them to the internal mixer for thermal mixing. The mixing temperature of the internal mixer is The temperature is 125°C, the mixing time is 16 minutes, and then the resulting dough blend is fed into a single-screw extruder through a conical feeder, melted and extruded and pelletized to obtain the flame retardant High-efficiency functional masterbatch; the screw speed of the single-screw extruder is 170 rpm, and the temperature of the barrel is controlled at 150-160°C in sections.

[0040] The preparation method of the multiple composite coating tetrabrom...

Embodiment 2

[0043] A special flame retardant synergistic functional masterbatch for modification of polycarbonate and its alloys, the quality ratio of raw materials is as follows:

[0044]

[0045] The preparation method of the above-mentioned functional masterbatch is as follows: Weigh all the raw materials according to the above-mentioned mass ratio requirements, put them into a high-speed mixer and mix them evenly, and then transfer them to an internal mixer for thermal mixing. The temperature is 110°C, the mixing time is 20 minutes, and then the resulting dough blend is fed into a single-screw extruder through a conical feeder, melt-extruded and granulated to obtain the flame-retardant Synergistic functional masterbatch; the screw speed of the single-screw extruder is 160 rpm, and the temperature of the barrel is controlled at 150-160°C in stages.

[0046] The preparation method of the multiple composite coating tetrabromobisphenol A carbonate oligomer used in the above-mentioned f...

Embodiment 3

[0049] A special flame retardant synergistic functional masterbatch for modification of polycarbonate and its alloys, the quality ratio of raw materials is as follows:

[0050]

[0051] The preparation method of the above-mentioned functional masterbatch is as follows: Weigh all the raw materials according to the above-mentioned mass ratio requirements, put them into a high-speed mixer and mix them evenly, then transfer them to the internal mixer for thermal mixing. The mixing temperature of the internal mixer is 100°C, the mixing time is 20 minutes, and then the resulting dough blend is fed into a single-screw extruder through a conical feeder, melted and extruded and pelletized to obtain the flame retardant synergistic Functional masterbatch; the screw speed of the single-screw extruder is 150 rpm, and the barrel temperature is controlled at 150-160°C in stages.

[0052] The preparation method of the multiple composite coating tetrabromobisphenol A carbonate oligomer used...

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Abstract

The invention relates to the technical field of plastic modification processing, in particular to a polycarbonate and polycarbonate alloy modification special flame-retardant synergistic functional master batch, and a preparation method thereof. According to the polycarbonate and polycarbonate alloy modification special flame-retardant synergistic functional master batch, a multi-composite coatedtetrabromo bisphenol A carbonate oligomer is used as a main body flame retardant; the polycarbonate and polycarbonate alloy modification special flame-retardant synergistic functional master batch comprises the following components in percentage by mass : 55.0-70.0wt% of the multi-composite coated tetrabromo bisphenol A carbonate oligomer, 15.0-30.0wt% of sodium citrate, 10.0- 14.0wt% of ethylene-glycidyl acrylate copolymer, 0.0-4.0wt% of an aliphatic copolyester, 0.0-0.5wt% of a hyperbranched polyester, 0.5-1.0wt% of a dispersant and 0.3-0.5wt% of a lubricant. Compared with a traditional plastic flame-retardant functional master batch, the flame-retardant synergistic functional master batch disclosed by the invention has the advantages that the thermal stability and the flow dispersity ofthree above domestic brominated flame retardants are improved,so that the flame-retardant effect is improved; the flame retardant effect which is the same as that of the traditional flame retardant functional master batch can be obtained at a less master batch addition amount, and the mechanical property loss of flame retardant compounds of modified polycarbonate and polycarbonate alloy thereof can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of plastic modification processing, in particular to a special flame-retardant synergistic functional masterbatch for polycarbonate (PC) and its alloy modification and a preparation method thereof. Background technique [0002] Engineering plastics are widely used in household appliances, industrial electronic appliances, automobiles and other transportation fields because of their excellent comprehensive physical and mechanical properties, heat resistance, and good electrical properties. However, when they are used in the production of products, they often need to implement resistance Combustion modification to improve its safety in use. The flame retardant modification of engineering plastics can be realized by adding flame retardants and melt blending through a twin-screw extruder. Flame retardants can prevent plastics from being ignited and inhibit flame propagation, which can effectively improve the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L67/00C08L69/00C08K9/10C08K5/109C08K3/22C08K3/32C08J3/22
CPCC08J3/226C08J2423/08C08J2467/00C08J2469/00C08J2369/00C08K9/10C08K5/109C08K3/22C08K2003/328
Inventor 李翰卿汪晓东
Owner 江苏万纳普新材料科技有限公司
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