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A high-efficiency enhanced halogen-free flame-retardant functional masterbatch for PBT direct injection molding and its preparation method

An injection molding and functional masterbatch technology, which is applied in the field of high-efficiency reinforced halogen-free flame-retardant functional masterbatch and its preparation, can solve problems such as temperature mismatch and fiber length-to-diameter ratio reduction, so as to improve reinforcement efficiency and interface viscosity. Junction, solve the effect of processing temperature mismatch

Active Publication Date: 2021-03-23
江苏万纳普新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The following technical advantages can be obtained by using the method of processing the two masterbatches separately: ① avoiding the direct blending of glass fiber and phosphorus / nitrogen flame retardants to generate internal friction and heat generation, resulting in the decomposition of phosphorus / nitrogen flame retardants; ② It avoids the sharp drop of fiber length-to-diameter ratio caused by mutual shearing and abrasion between inorganic flame retardant synergist (such as zinc borate) and glass fiber; The problem of mismatching processing temperature of modified system melt blending; ④Using melt pultrusion technology to prepare reinforced masterbatch with larger fiber aspect ratio than traditional chopped glass fiber reinforced masterbatch; ⑤Using acrylic acid diglycidyl ether Dendritic ionomer is used as the carrier component of A masterbatch, and its reactive end group can have the greatest contact opportunity with the end group of PBT resin in the environment without interference from flame retardant powder, so as to maximize its toughening effect

Method used

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  • A high-efficiency enhanced halogen-free flame-retardant functional masterbatch for PBT direct injection molding and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A high-efficiency enhanced halogen-free flame-retardant functional masterbatch for direct injection molding of PBT resin, which is composed of two masterbatches A and B, and the quality ratio of the raw materials of the A masterbatch is as follows:

[0037] glass fiber 70.0kg High Flow PBT Resin 20.0kg Acrylic acid diglycidyl ether grafted sodium ion crosslinked ethylene-octene-acrylic acid copolymer elastic ionomer 9.7kg antioxidant 300.0g

[0038] The antioxidants are 1,3,5-trimethyl-2,4,6-(3,5-di-tert-butyl-4-hydroxybenzyl)benzene (trade name Antioxidant 1330) and bis( 2,4-dicumylphenyl) pentaerythritol diphosphite (trade name: Antioxidant S9228) is a compound composed of 1:1 mass ratio.

[0039] The mass ratio of the raw materials of the B masterbatch is as follows:

[0040] Aluminum methyl ethyl hypophosphite 60.0kg Melamine cyanurate 25.0kg Acrylic acid diglycidyl ether grafted sodium ion crosslinked ethy...

Embodiment 2

[0044] A high-efficiency enhanced halogen-free flame-retardant functional masterbatch for direct injection molding of PBT resin, which is composed of two masterbatches A and B, and the quality ratio of the raw materials of the A masterbatch is as follows:

[0045] glass fiber 50.0kg High Flow PBT Resin 40.0kg Acrylic acid diglycidyl ether grafted with zinc ions to crosslink ethylene-octene-acrylic acid copolymer elastic ionomer 9.7kg antioxidant 300.0g

[0046] The antioxidants are 1,3,5-trimethyl-2,4,6-(3,5-di-tert-butyl-4-hydroxybenzyl)benzene (trade name Antioxidant 1330) and bis( 2,4-dicumylphenyl) pentaerythritol diphosphite (trade name: Antioxidant S9228) is a compound composed of 1:1 mass ratio.

[0047] The mass ratio of the raw materials of the B masterbatch is as follows:

[0048] Ammonium polyphosphate 40.0kg Melamine cyanurate 45.0kg Acrylic acid diglycidyl ether grafted with zinc ions to crosslink ethylen...

Embodiment 3

[0052] A high-efficiency enhanced halogen-free flame-retardant functional masterbatch for direct injection molding of PBT resin, which is composed of two masterbatches A and B, and the quality ratio of the raw materials of the A masterbatch is as follows:

[0053] glass fiber 60.0kg High Flow PBT Resin 30.7kg Acrylic acid diglycidyl ether grafted barium ion crosslinked ethylene-octene-acrylic acid copolymer elastic ionomer 9.0kg antioxidant 300.0g

[0054] The antioxidants are 1,3,5-trimethyl-2,4,6-(3,5-di-tert-butyl-4-hydroxybenzyl)benzene (trade name Antioxidant 1330) and bis( 2,4-dicumylphenyl) pentaerythritol diphosphite (trade name: Antioxidant S9228) is a compound composed of 1:1 mass ratio.

[0055] The mass ratio of the raw materials of the B masterbatch is as follows:

[0056] aluminum diethyl hypophosphite 35.0kg Melamine polyphosphate 25.0kg Melamine cyanurate 25.0kg Acrylic acid diglycidyl ether graft...

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Abstract

The invention belongs to the technical field of plastic modification and processing, and particularly relates to efficient reinforced halogen-free flame retardant functional master batch capable of being directly applied to injection molding processing of PBT products and a preparation method of the efficient reinforced halogen-free flame retardant functional master batch. The multifunctional master batch is formed by a master batch body A and a master batch body B which are combined, and the master batch body A is prepared from the following components in percentage by mass: 50.0-70.0% of glass fiber, 20.0-40.0% of high-liquidity PBT resin, 5.0-10.0% of acrylic acid diglycidyl ether graft elastic ionomer, and 0.1-0.3% of antioxidant. Compared with traditional plastic functional master batch, the prepared functional master batch has the advantages that modifying effect mutual damage caused by mutual shear abrasion of the glass fiber and a fire retardant in the processing process of reinforced halogen-free flame retardant PBT resin modifying systems is avoided, meanwhile the problem that the processing temperatures of the two modifying systems are not matched is solved, and the modifying effects of the two modifying systems are remarkably enhanced; and the master batch has the advantages of being easy to disperse and process, and can be easily mixed with the PBT resin in proportion for injection molding, and an excellent modifying effect is achieved.

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 injection molding of PBT 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 resistance, but also endows pl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L51/06C08K5/13C08K5/526C08K5/5313C08K5/3492C08K13/04C08K7/14C08J3/22
CPCC08J3/226C08J2467/02C08K5/13C08K5/34928C08K5/526C08K5/5313C08K7/14C08K13/04
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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