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Halogen-free antiflaming polylactic acid material and produciotn method of same

The technology of a polylactic acid material and a manufacturing method is applied in the field of halogen-free flame retardant polylactic acid material and its manufacturing, which can solve problems such as poor dispersion of flame retardants, and achieve the effects of small mechanical properties, reduced addition amount, and good toughness.

Active Publication Date: 2011-07-27
SHENZHEN ESUN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the flame retardant modification of polylactic acid materials by adding organophosphorus flame retardant system can obtain better flame retardant effect to a certain extent, but due to the poor dispersion of these flame retardants in polylactic acid materials, it needs to be added in large quantities.

Method used

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  • Halogen-free antiflaming polylactic acid material and produciotn method of same
  • Halogen-free antiflaming polylactic acid material and produciotn method of same
  • Halogen-free antiflaming polylactic acid material and produciotn method of same

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Example 1: 60 parts of high molecular weight polylactic acid with a viscosity average molecular weight of 100,000 or more, preferably 120,000, a melt index of 2-5g / 10min, preferably 40 parts of high melt strength polylactic acid of 5g / 10min, stearic acid 0.2 parts of sodium (dispersion aid) and 20 parts of polybutylene succinate (degradable toughening resin) were placed on a high-speed mixer and stirred evenly to obtain a mixed base material for later use. Put 42 parts of ammonium polyphosphate (abbreviated as APP), 28 parts of pentaerythritol, 20 parts of polybutylene succinate (polyester powder), and 10 parts of zinc borate (flame retardant synergist) in Stir evenly in a high-speed mixer to obtain a halogen-free flame retardant. The obtained mixed base material and halogen-free flame retardant were mixed in a high-speed mixer according to 6:4 (mass ratio), and then placed in a twin-screw extruder. The temperature of each section was set as: feeding port room temperatu...

Embodiment 2

[0026] Example 2: 60 parts of high molecular weight polylactic acid with a viscosity average molecular weight of 120,000, 40 parts of high melt strength polylactic acid with a melt index of 5 g / 10min, 0.2 parts of calcium stearate (dispersion aid), polybutylene 20 parts of butanediol diacid (degradable toughening resin) were placed on a high-speed mixer and stirred evenly to obtain a mixed base material for later use. Put 42 parts of ammonium polyphosphate (abbreviated as APP), 28 parts of pentaerythritol, 20 parts of polyhydroxyalkanoate (powder polyester), and 10 parts of zinc borate (flame retardant synergist) in a high-speed mixer Stir evenly in medium to obtain a halogen-free flame retardant. The obtained mixed base material and halogen-free flame retardant were mixed in a high-speed mixer at a ratio of 7:3 (mass ratio), and then placed in a twin-screw extruder. The temperature of each section was set as: room temperature at the feeding port- 50°C, feeding section 160-16...

Embodiment 3

[0027] Embodiment 3: The difference from Embodiment 1 is that the obtained mixed base material is mixed with the halogen-free flame retardant at a ratio of 8.5:1.5 (mass ratio).

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Abstract

The invention discloses a halogen-free antiflaming polylactic acid material which comprises the following components according to weight percentage: 50 to 80 percent of polyactic acid base stock, 5 to 40 percent of halogen-free flame retardant, 0.1 to 1.5 percent of dispersing aid, and 10 to 30 percent of degradable toughening resin. The invention also discloses a production method of the halogen-free antiflaming polylactic acid material, which comprises the steps of blending all the components of the halogen-free antiflaming polylactic acid material and then extruding for granulation. The polylactic acid material reduces the flame retardant additive amount of an antiflaming system, ensures the antiflaming effect and simultaneously guarantees the mechanical property of the material, and can be used for injection molding type electronic products, sheet grade decoration boards and the like.

Description

technical field [0001] The invention relates to the technical field of new polymer materials, in particular to a halogen-free flame-retardant polylactic acid material and a manufacturing method thereof. Background technique [0002] Polylactic acid is derived from corn. It is a degradable plastic. It has no pollution and residues to the environment. It is one of the green plastic varieties. It has high stiffness and strength and is close to the mechanical properties of engineering plastics. Its degradation needs to be under specific conditions. Under ordinary daily conditions, it can maintain its performance for a long time without changing. It can be applied to the field of consumables such as electronic products, which can solve the problem of environmental pollution caused by the increasing amount of electronic waste. However, when polylactic acid materials are used in electronic products, most of them require a halogen-free flame retardant test report. The commonly used...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L67/02C08L69/00C08K13/02B29B9/06B29C47/92B29C48/92
CPCB29C48/04
Inventor 吴景阳杨义浒
Owner SHENZHEN ESUN IND
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