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High-opacity white or light flame-retardant polypropylene composition and preparation method thereof

A technology of flame-retardant polypropylene and composition, which is applied in the field of high light-shielding white or light-color flame-retardant polypropylene composition and its preparation, and can solve the problem of high-light-shielding white or light-color flame-retardant polypropylene, which has no patent report, Phosphorus nitrogen bromine compound flame retardant failure and other problems, to achieve the effect of low material cost, little impact on material physical properties, and less flame retardant addition

Inactive Publication Date: 2019-03-08
中山市华邦塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the phosphorus-nitrogen-bromine composite flame-retardant polypropylene system, high light-shielding properties can be achieved by making it black, but white or light-colored materials need to be filled with more light-shielding fillers, and too many fillers can easily lead to phosphorus-nitrogen-bromine composite Flame retardant failure
At present, there is no patent report on the preparation of high light-shielding white or light-colored flame-retardant polypropylene using phosphorus-nitrogen-bromine composite flame retardants.

Method used

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  • High-opacity white or light flame-retardant polypropylene composition and preparation method thereof
  • High-opacity white or light flame-retardant polypropylene composition and preparation method thereof
  • High-opacity white or light flame-retardant polypropylene composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5 and comparative example 1-2

[0022] Preparation of high light-shielding white or light-colored flame-retardant polypropylene composition of embodiment 1-5 and comparative example 1-2

[0023] The formula composition of the high light-shielding white or light-colored flame-retardant polypropylene compositions of Examples 1-5 and Comparative Examples 1-2 is shown in Table 1:

[0024] Each embodiment of table 1 and the raw material formula composition of comparative example

[0025]

[0026]

[0027] In the above formulation, the difference between Comparative Example 1 and Example 3 is that it does not contain sunscreen agent B, specifically, does not contain carbon black, and the amount of polypropylene resin is increased accordingly. The difference between Comparative Example 2 and Example 3 is that it does not contain opacifying agent A, specifically, does not contain barium sulfate and titanium dioxide, and the amount of polypropylene resin is increased accordingly.

Embodiment 1

[0028] Embodiment 1 The preparation steps of high light-shielding white or light-colored flame-retardant polypropylene composition are:

[0029] (1) Weigh polypropylene resin, phosphorus nitrogen bromine composite flame retardant EP-700, talcum powder, titanium dioxide, carbon black, ethylene bis stearic acid amide, tetrakis[β-(3,5- Di-tert-butyl-4-hydroxyl) phenylpropionic acid] pentaerythritol ester and light yellow toner, then all raw materials are added in the high mixer and mixed for 5min;

[0030] (2) Add the mixed raw materials from the feed port into the twin-screw extruder to extrude and granulate. The processing temperature of each zone of the twin-screw extruder is 200°C, and the rotating speed of the screw is 250r / min. 1. Cutting into pellets after blowing dry, and finally injecting the granular material into a standard spline in an injection molding machine to obtain a white or light-colored flame-retardant polypropylene composition with high shading.

Embodiment 2-5

[0031] Examples 2-5 and Comparative Examples 1-2 The preparation of the high light-shielding white or light-colored flame-retardant polypropylene composition refers to the steps of Example 1.

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Abstract

The invention discloses a high-opacity white or light flame-retardant polypropylene composition and a preparation method thereof. The high-opacity white or light flame-retardant polypropylene composition comprises, by weight, 35-75 parts of polypropylene resin, 3-5 parts of environment-friendly phosphorus, nitrogen and bromide composite flame retardant, 15-40 parts of opacifying agent A, 0.01-0.1part of opacifying agent B, 0.2-1 part of antioxygen, 0.3-1 part of lubricant and 0.1-1 part of white or light toner. By the aid of the efficient environment-friendly phosphorus, nitrogen and bromidecomposite flame retardant, the composition meets requirements for vertical combustion V2 grade of a UL94 flammability standard, by matching of the opacifying agent A and the opacifying agent B, extremely low transmission of light of the composition is realized, and the composition can be prepared into high white or various light colors. By utilizing the environment-friendly flame retardant, low toxicity and low smoke effects can be realized during combustion, mechanical property of the composition can be kept well, and the composition is applicable to preparation of various white or light products requiring flame retardant and lightproof effects.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a high light-shielding white or light-color flame-retardant polypropylene composition and a preparation method thereof. Background technique [0002] With the development of science and technology, the application of optoelectronic technology is becoming more and more extensive. When designing optoelectronic equipment, it is often necessary to reduce or prevent the transmission of light. The use of light and easy-to-form plastics is the best choice. The circuit in optoelectronic equipment Faults such as short circuits and sparks may occur, which may cause fire risks. It is the best choice to choose plastics that also have flame-retardant and light-shielding properties. There is a wide range of demand in products that require shading such as LED lights, LCD backlight panels, and automotive dashboards. [0003] As one of the five general-purpose plastics, polypropylene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K13/02C08K3/34C08K3/30C08K3/22C08K5/18C08K3/04C08K5/134
CPCC08K3/04C08K3/22C08K3/30C08K3/34C08K5/1345C08K5/18C08K13/02C08K2003/2241C08K2003/3045C08K2201/014C08L2201/02C08L23/12
Inventor 雷华爱危贵明
Owner 中山市华邦塑料有限公司
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