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High-efficiency halogen-free flame-retardant polycarbonate

A technology of flame-retardant polycarbonate and polycarbonate, which is applied in the field of flame-retardant products, can solve the problems of small amount of addition, reduce the transparency of materials, etc., and achieve the effects of enhanced compatibility, low production cost, and simple preparation method

Inactive Publication Date: 2003-08-13
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

This type of flame retardant, especially the alkali metal or alkaline earth metal salt (U.S, Pat3,948,851) of aryl sulfone sulfonic acid with a charge-absorbing group, is excellent in that it needs to be added in a small amount and has a high flame retardant efficiency. It can overcome some disadvantages of conventional polycarbonate flame retardants, but there are problems that it is easy to reach the saturated dosage in polycarbonate and reduce the transparency of its material

Method used

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Experimental program
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Effect test

Embodiment 1～16

[0022] (1) Mechanical premixing is added to the high-speed spinner together with the specific varieties and weights of the polycarbonates, alkali metal or alkaline earth metal aryl sulfonate sulfonates and phosphonate flame retardants listed in Table 1. Mixing, because potassium diphenyl sulfone sulfonate or sodium diphenyl sulfone sulfonate is powdery and fine, it is not easy to mix evenly with granular polycarbonate and phosphonate flame retardants, it must be mixed with potassium diphenyl sulfone sulfonate or Before adding sodium diphenylsulfone sulfonate, add 0.01-0.03ml silicone oil to the polycarbonate, so that the powdered potassium diphenyl sulfone sulfonate or sodium diphenyl sulfone sulfonate can be more evenly attached to the granular polycarbonate / phosphonate flame retardant to achieve the purpose of mixing evenly;

[0023] (2) Vacuum drying Put the uniformly mixed material into a vacuum oven, and dry it for 12 to 20 hours under a vacuum of 10 to 15 mmHg, and cont...

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PUM

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Abstract

An efficient non-halogen flame-retarding polycarbonate is prepared from aromatic polycarbonate, the arylsulfonyl sulfonate of alkali metal or alkali-earth metal as flame-retarding agent and the phosphonate compound as another flame-retarding agent prepared from phenyl phosphonic chloride and diphenol. Its advantages are high flame-retarding performance and less release of toxic gas and smoke.

Description

1. Technical field [0001] The invention belongs to the technical field of flame retardant products, in particular, the invention relates to an aryl sulfone sulfonate and phosphonate flame retardant containing both alkali metals or alkaline earth metals, and a halogen-free polymer with higher flame retardant efficiency. Carbonate. 2. Technical background [0002] Polycarbonate is one of the five widely used engineering plastics. When it has a certain thickness, it has a certain fire resistance, but if it is used as an optical intermediate material, the shell and rack material of automated office equipment, is far from meeting the requirements. [0003] Flame retardants are a class of additives that can prevent polymer materials from being ignited or inhibit the spread of flames. According to their use methods, they can be divided into additive and reactive types. Additive flame retardants are widely used because of their convenience. At present, the flame retardants added i...

Claims

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Application Information

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IPC IPC(8): C08K5/5333C08L69/00
Inventor 王玉忠弋冰
Owner SICHUAN UNIV
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