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Spraying-free polycarbonate composition and preparation method thereof

A technology of polycarbonate and composition, which is applied in the field of spray-free polycarbonate composition and its preparation, and can solve the problems of flame retardancy and heat resistance that need to be improved

Inactive Publication Date: 2017-01-04
福建华塑新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the spray-free polycarbonate on the market is made through conventional formula and processing technology, and its flame retardancy and heat resistance need to be improved.

Method used

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  • Spraying-free polycarbonate composition and preparation method thereof
  • Spraying-free polycarbonate composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A spray-free polycarbonate composition is characterized in that: the raw material formula is:

[0031] 88 parts by weight of polycarbonate;

[0032] Active ammonium polyphosphate 4 parts by weight;

[0033] 1 part by weight of red phosphorus;

[0034] Compound lubricant 0.5 parts by weight;

[0035] 5 parts by weight of melamine cyanuric acid;

[0036] 1 part by weight of compound antioxidant;

[0037] Toughening agent 0.2 parts by weight;

[0038] 0.3 parts by weight of light stabilizer;

[0039] Wherein, the polycarbonate is bisphenol A polycarbonate with a molecular weight of 26000-40000;

[0040] Wherein, the sum of the mass percentages of the above components is 100%.

[0041] The compound antioxidant is composed of antioxidant 1010 and antioxidant 168 in a weight ratio of 1:1 to 1:3.

[0042] A preparation method for spray-free polycarbonate composition, comprising the following steps:

[0043] 1) Add polycarbonate to an engineering plastics grinder for c...

Embodiment 2

[0050] A kind of preparation method of spray-free polycarbonate composition as described in embodiment 1, wherein part of technique can also adopt following technique:

[0051] In step 5), the stirring speed of the first stage of stirring is 480r / min, and the stirring time is 15min; the stirring speed of the second stage of stirring is 240r / min, and the stirring time is 17min; the stirring speed of the third stage of stirring is 80r / min, stirring time is 1h.

[0052] In step 6), the extrusion temperature of the independent section is 260°C, the extrusion temperature of the filling section is 310°C, and the extrusion temperature of the meshing section is 290°C.

Embodiment 3

[0054] A kind of preparation method of spray-free polycarbonate composition as described in embodiment 1, wherein part of technique can also adopt following technique:

[0055] In step 5), the stirring speed of the first stage of stirring is 400r / min, and the stirring time is 20min; the stirring speed of the second stage of stirring is 200r / min, and the stirring time is 20min; the stirring speed of the third stage of stirring is 80r / min, stirring time is 1h.

[0056] In step 6), the extrusion temperature of the independent section is 250°C, the extrusion temperature of the filling section is 310°C, and the extrusion temperature of the meshing section is 280°C.

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Abstract

The invention provides a spraying-free polycarbonate composition and a preparation method thereof. According to the preparation method, active ammonium polyphosphate, red phosphorus, a compound antioxidant, melamine cyanurate, a light stabilizer and the like are added into a formula, the melamine cyanurate and the active ammonium polyphosphate are mixed with a mixture No. 1 and a mixture No. 2, the stirring time and the stirring speed of three-stage stirring are strictly controlled, and the melamine cyanurate and the active ammonium polyphosphate can achieve a synergistic effect together with the mixture No. 1 and the mixture No. 2, so that the surface morphology of the spraying-free polycarbonate composition is improved, and the spraying-free polycarbonate composition prepared by the method not only has good surface strength and surface glossiness, but also has higher flame retardant property and longer heat resisting time; tests prove that the highest flame retardant property reaches up to level V-0, and the spraying-free polycarbonate composition has the heat resistance that the composition has a color change phenomenon only after being baked for 22min in the environment of 150+ / -5 DEG C.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a spray-free polycarbonate composition and a preparation method thereof. Background technique [0002] High-gloss spray-free plastic is an engineering plastic with high surface quality. Its surface has the characteristics of high gloss and high hardness, which can avoid post-processing such as painting and save costs. [0003] At present, high-gloss spray-free products on the market mainly include engineering plastics such as ABS and PC. Such plastics have low surface hardness, low thermal deformation temperature, and easy deformation of materials, so they cannot be widely used. The high-gloss spray-free reinforced polycarbonate composition not only has excellent surface hardness and gloss, but also has the advantages of high heat resistance and small deformation. [0004] At present, the spray-free polycarbonates on the market are all made through conventional formulas and proc...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08K13/02C08K3/32C08K3/02C08K5/3492B29C47/92B29B9/06B29C48/92
CPCB29B9/06B29C48/92B29C2948/92704C08K3/02C08K3/32C08K5/34928C08K13/02C08K2003/026C08K2003/323C08L69/00
Inventor 林建民蔡鹏飞
Owner 福建华塑新材料有限公司
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