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High-efficiency reinforced halogen-free flame retardant functional masterbatch for polyoxymethylene direct injection molding and preparation method thereof

A technology of injection molding and functional masterbatch, which is applied in the field of high-efficiency reinforced halogen-free flame retardant functional masterbatch and its preparation, can solve the problems of mutual loss of modification efficiency, and achieves improved flow performance, improved modification efficiency, and strong heat sensitivity. Effect

Active Publication Date: 2021-11-12
江苏万纳普新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve the problem of mutual loss of modification performance existing in the preparation process of the existing glass fiber-reinforced halogen-free flame-retardant polyoxymethylene modified special material, the present invention provides a high-efficiency reinforced no Halogen flame retardant functional masterbatch and preparation method thereof

Method used

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  • High-efficiency reinforced halogen-free flame retardant functional masterbatch for polyoxymethylene direct injection molding and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A high-efficiency enhanced halogen-free flame-retardant functional masterbatch for polyoxymethylene direct injection molding, which is composed of two masterbatches A and B. The quality ratio of the raw materials for the A masterbatch is as follows:

[0035] glass fiber 70.0 kg High flow polyoxymethylene 22.0 kg polyoxyethylene 6.0 kg PTFE powder 1.7kg antioxidant 300.0 g

[0036] The antioxidants are 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl) isocyanuric acid (trade name: Antioxidant 3114), bis(2,4-di-tert-butyl phenyl) pentaerythritol diphosphite (trade name Antioxidant 626) and 5,7-bis-(2,2-dimethylethyl)-3-(3,4-dimethylphenyl)- 2–3 Hydrogen–Benzofuranone (trade name Antioxidant 168) is a compound composed of 1:1:1 by mass ratio.

[0037] The mass ratio of the raw materials of the B masterbatch is as follows:

[0038] Ammonium polyphosphate 60.0kg Melamine cyanurate 30.0kg polylactic acid 7.0kg ...

Embodiment 2

[0042] A high-efficiency enhanced halogen-free flame-retardant functional masterbatch for polyoxymethylene direct injection molding, which is composed of two masterbatches A and B. The quality ratio of the raw materials for the A masterbatch is as follows:

[0043] glass fiber 50.0kg High flow polyoxymethylene 40.0 kg polyoxyethylene 6.7kg PTFE powder 3.0kg antioxidant 300.0 g

[0044] The antioxidants are 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl) isocyanuric acid (trade name: Antioxidant 3114), bis(2,4-di-tert-butyl phenyl) pentaerythritol diphosphite (trade name Antioxidant 626) and 5,7-bis-(2,2-dimethylethyl)-3-(3,4-dimethylphenyl)- 2–3 Hydrogen–Benzofuranone (trade name Antioxidant 168) is a compound composed of 1:1:1 by mass ratio.

[0045] The mass ratio of the raw materials of the B masterbatch is as follows:

[0046] Ammonium polyphosphate 50.0kg Melamine cyanurate 40.0 kg polylactic acid 8.0 kg ...

Embodiment 3

[0050] A high-efficiency enhanced halogen-free flame-retardant functional masterbatch for polyoxymethylene direct injection molding, which is composed of two masterbatches A and B. The quality ratio of the raw materials for the A masterbatch is as follows:

[0051] glass fiber 61.0kg High flow polyoxymethylene 30.0kg polyoxyethylene 6.7kg PTFE powder 2.0 kg antioxidant 300.0 g

[0052] The antioxidants are 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl) isocyanuric acid (trade name: Antioxidant 3114), bis(2,4-di-tert-butyl phenyl) pentaerythritol diphosphite (trade name Antioxidant 626) and 5,7-bis-(2,2-dimethylethyl)-3-(3,4-dimethylphenyl)- 2–3 Hydrogen–Benzofuranone (trade name Antioxidant 168) is a compound composed of 1:1:1 by mass ratio.

[0053] The mass ratio of the raw materials of the B masterbatch is as follows:

[0054] Ammonium polyphosphate 30.0kg Melamine polyphosphate 25.0 kg Melamine cyanurate ...

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Abstract

The invention belongs to the technical field of plastic modification and processing, and in particular relates to a high-efficiency enhanced halogen-free flame-retardant functional masterbatch and a preparation method thereof which can be directly applied to injection molding of polyoxymethylene products; the functional masterbatch is composed of A and B two It is composed of two kinds of masterbatches. The mass percentage of A masterbatch is as follows: glass fiber 50.0~70.0 wt.%, high flow polyoxymethylene 22.0~40.0 wt.%, polyoxyethylene 5.0~7.0 wt.%, polytetrafluoroethylene Powder 1.0~3.0 wt.%, Antioxidant 0.1~0.3 wt.%. Compared with the traditional plastic functional masterbatch, the functional masterbatch prepared by the present invention avoids the processing of polyoxymethylene in the enhanced halogen-free flame retardant modification system. During the process, the decomposition of the flame retardant and the matrix resin is caused by the mutual shear friction and heat generation between the glass fiber and the flame retardant, and at the same time solves the problem of mutual loss of modification performance caused by the mismatch of the processing temperature of the above two modification systems. Significantly enhanced the modification efficiency of both.

Description

technical field [0001] The invention belongs to the technical field of plastic modification and processing, and in particular relates to a high-efficiency enhanced halogen-free flame-retardant functional masterbatch which can be directly applied to the injection molding processing of polyoxymethylene products and a preparation method thereof. Background technique [0002] Using twin-screw extruder to implement melt blending is a traditional method for plastic modification. Using the high-efficiency and excellent mixing performance of co-rotating twin-screw extruders, thermoplastics and various modified additives can be continuously melt-blended and extruded After granulation, the prepared modified special material will be used again for injection or extrusion processing to form various products. This technical route not only effectively improves the physical and mechanical properties of plastic products such as strength, toughness, stiffness, creep resistance, and flexure re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L59/00C08L71/02C08L27/18C08L67/04C08K13/04C08K7/14C08K3/32C08K5/3492C08J3/22
CPCC08J3/226C08J2359/00C08J2427/18C08J2459/00C08J2467/04C08J2471/02C08K5/34922C08K5/34928C08K7/14C08K13/04C08K2003/323C08K2201/014
Inventor 李翰卿汪晓东邱小龙徐君琦
Owner 江苏万纳普新材料科技有限公司
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