Halogen-free phosphorus-containing flame retardant, flame-retardant transparent polycarbonate material, and preparation and application of halogen-free phosphorus-containing flame retardant and flame-retardant transparent polycarbonate material

A technology of polycarbonate and flame retardant, which is applied in the field of flame retardants and can solve the problem of large amount of addition

Active Publication Date: 2016-10-12
JIANGLIN GUIZHOU HI TECH DEV CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN201410333261.5 discloses the application of a kind of bridge chain DOPO deriv

Method used

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  • Halogen-free phosphorus-containing flame retardant, flame-retardant transparent polycarbonate material, and preparation and application of halogen-free phosphorus-containing flame retardant and flame-retardant transparent polycarbonate material
  • Halogen-free phosphorus-containing flame retardant, flame-retardant transparent polycarbonate material, and preparation and application of halogen-free phosphorus-containing flame retardant and flame-retardant transparent polycarbonate material
  • Halogen-free phosphorus-containing flame retardant, flame-retardant transparent polycarbonate material, and preparation and application of halogen-free phosphorus-containing flame retardant and flame-retardant transparent polycarbonate material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] (1) The commercially available PC resin was dried at a temperature of 120° C. for 4 h.

[0083] (2) Under reflux at a temperature of 60°C, dissolve the DOPO compound represented by the above structural formula (I) in which R1 is phenylethyl in an ethanol solvent, wherein the mass ratio of the DOPO compound to the solvent is 1:10, and then The flame retardant composition is obtained by adding nano silicon dioxide and blending under the condition of supercritical carbon dioxide at 20° C. and 20 MPa. Wherein, the mass ratio of DOPO compound to nano silicon dioxide is 4:1, the supercritical carbon dioxide pressure is 20MPa, and the time is 4h.

[0084] (3) Weigh the PC resin / flame retardant composition obtained in step (1) and mix it uniformly according to the mass ratio of 90 / 10 to form 1Kg of raw materials.

[0085] (4) Add the raw materials after step (3) into a twin-screw extruder for melt blending and extrusion; wherein the twin-screw extruder has 5 sections of temper...

Embodiment 2

[0092] (1) The commercially available PC resin was dried at a temperature of 140° C. for 2 h.

[0093](2) At a temperature of 60°C, dissolve the DOPO compound represented by the above structural formula (I) wherein R1 is naphthyl ethyl in a propanol solvent, wherein the mass ratio of the DOPO compound to the solvent is (1:10) , and then adding nano-silica and blending with nano-silica at a temperature of 60° C., heating to a temperature of 90° C. and evaporating the solvent to obtain a flame retardant composition. Wherein, the mass ratio of DOPO compound to nano silicon dioxide is 3:1, and the time is 5 hours.

[0094] (3) Weigh the PC resin / flame retardant composition obtained in step (1) and mix it uniformly according to the mass ratio of 85 / 15 to form 1Kg of raw materials.

[0095] (4) Add the raw materials after step (3) into a twin-screw extruder for melt blending and extrusion; wherein the twin-screw extruder has 5 sections of temperature control zones, wherein the temp...

Embodiment 3

[0102] (1) The commercially available PC resin was dried at a temperature of 130° C. for 6 h.

[0103] (2) At a temperature of 60°C, dissolve the DOPO compound shown by the above structural formula (I) wherein R1 is naphthyl ethyl in an acetone solvent, wherein the mass ratio of the DOPO compound to the solvent is 1:8, and then add The nano-silica sol was blended with the nano-silica sol at a temperature of 25° C., and then heated to a temperature of 50° C. to evaporate the solvent to obtain a flame retardant composition. Wherein, the mass ratio of the DOPO compound to the silica sol is 5:1, and the time is 5 hours.

[0104] (3) Weigh the PC resin / flame retardant composition obtained in step (1) and mix it uniformly according to the mass ratio of 95 / 5 to form 1Kg of raw materials.

[0105] (4) Add the raw materials after step (3) into a twin-screw extruder for melt blending and extrusion; wherein the twin-screw extruder has 5 sections of temperature control zones, wherein the...

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Abstract

The invention relates to a halogen-free flame-retardant transparent polycarbonate material and a preparation method thereof, and belongs to the technical field of flame-retardant macromolecule materials. The polycarbonate material comprises PC resin and a flame retardant composition. The flame retardant composition is prepared from a DOPO derivative with double P-C bond bridged chains and nano silica or nano silica sol through a solution blending or supercritical carbon dioxide blending method, so that the problem that the compatibility of phosphonate and high polymer materials is difficult is effectively solved; meanwhile flame-retardant elements of phosphorus and silicon are introduced, so that the flame-retardant property is improved, and the transparency of the PC resin cannot be influenced. The preparation method is simple, easy to operate and low in cost, and the obtained PC material is high in transparence, halogen-free, environment-friendly, and wide in adaptability, and can be widely applied to the fields of automobiles, electronic appliances, building materials, the military industry and the like.

Description

technical field [0001] The invention relates to the field of flame retardants, in particular to a phosphorus-silicon flame retardant and a transparent flame retardant polycarbonate (PC) material containing the flame retardant, the invention also relates to the flame retardant and the transparent flame retardant Preparation method and application of fuel PC material. Background technique [0002] As a general-purpose engineering plastic, PC (polycarbonate) resin has good transparency and excellent mechanical properties, so it has been widely used in various fields of production and life. However, flame retardancy is an important property in order to satisfy some applications, for example in electrical and electronic applications such as housings and components of home appliances and equipment. However, the flame retardancy of unmodified PC resin can only reach UL94V-2 level, which limits its use in these fields to a certain extent. In addition, with the increasing developme...

Claims

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Application Information

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IPC IPC(8): C08K5/5313C08K3/36C08L69/00
CPCC08K3/36C08K5/5313C08K2201/003C08K2201/011C08K2201/014C08L2201/02C08L2201/10C08L2201/22C08L69/00Y02P20/54
Inventor 秦舒浩龙丽娟何文涛于杰李娟向宇姝何敏
Owner JIANGLIN GUIZHOU HI TECH DEV CO LTD
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