Efficient enhanced flame-retardant functional master batch for direct injection molding of PC-ABS alloy and preparation method of functional master batch

A technology of injection molding and functional masterbatch, applied in the field of high-efficiency reinforced halogen-free flame retardant functional masterbatch and its preparation, can solve the mismatch of processing temperature, reduce the processing and preparation temperature of phosphorus/nitrogen-containing flame retardant masterbatch, etc. problem, to achieve the effect of improving modification efficiency, excellent reinforcement and flame retardant effect, and improving dispersibility

Inactive Publication Date: 2019-03-26
江苏万纳普新材料科技有限公司
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  • Summary
  • 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 Solved the problem of mismatching processing temperature of glass fiber-reinforced PC / ABS alloy and phosphorus-nitrogen compound flame-retardant PC / ABS alloy two modification systems; The system is used as a carrier, which not only helps to improve the dispersion of flame retardants in the plastic matrix, but also significantly reduces the processing and preparation temperature of phosphorus / nitrogen-based flame retardant masterbatches, avoiding the thermal decomposition of flame retardants; ④ using benzene Ethylene-maleic anhydride random copolymer is used as the carrier component of A and B masterbatches, which can not only improve the interfacial adhesion between the fiber and the matrix, but also play a role in compatibilizing the PC / ABS alloy resin and the carrier resin; ⑤Introducing low-molecular-weight polyphenylene ether into the B masterbatch as a carrier not only helps to improve the dispersibility and compatibility with the matrix of phosphorus / nitrogen flame retardants, but also exerts the effect of a char-forming agent, promoting the phosphorus / Nitrogen Flame Retardant Flame Retardant Effect

Method used

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  • Efficient enhanced flame-retardant functional master batch for direct injection molding of PC-ABS alloy and preparation method of functional master batch
  • Efficient enhanced flame-retardant functional master batch for direct injection molding of PC-ABS alloy and preparation method of functional master batch
  • Efficient enhanced flame-retardant functional master batch for direct injection molding of PC-ABS alloy and preparation method of functional master batch

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Experimental program
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Effect test

Embodiment 1

[0035] A high-efficiency enhanced halogen-free flame-retardant functional masterbatch for PC / ABS alloy direct injection molding, which is composed of two masterbatches A and B. The quality ratio of raw materials for the A masterbatch is as follows:

[0036]

[0037] The antioxidant is 4-[(4,6-Dioctylthio-1,3,5-triazin-2-yl)]-2,6-di-tert-butylphenol (trade name Antioxidant 565) and bis(2,4-dicumylphenyl) pentaerythritol diphosphite (trade name: Antioxidant S9228) in a mass ratio of 1:1.

[0038] The mass ratio of the raw materials of the B masterbatch is as follows:

[0039]

[0040] The preparation method of A masterbatch is as follows: Weigh all raw materials according to the above mass ratio requirements, put high-flow PC resin, ABS resin, SEBS, SMA, hyperbranched polyester and antioxidant into a high-speed mixer and mix evenly, and then The obtained mixture and the weighed chopped glass fibers are respectively fed into a twin-screw extruder through a conical feeder a...

Embodiment 2

[0043] A high-efficiency enhanced halogen-free flame-retardant functional masterbatch for PC / ABS alloy direct injection molding, which is composed of two masterbatches A and B. The quality ratio of raw materials for the A masterbatch is as follows:

[0044]

[0045] The antioxidant is 4-[(4,6-Dioctylthio-1,3,5-triazin-2-yl)]-2,6-di-tert-butylphenol (trade name Antioxidant 565) and bis(2,4-dicumylphenyl) pentaerythritol diphosphite (trade name: Antioxidant S9228) in a mass ratio of 1:1.

[0046] The mass ratio of the raw materials of the B masterbatch is as follows:

[0047]

[0048] The preparation method of A masterbatch is as follows: Weigh all raw materials according to the above mass ratio requirements, put high-flow PC resin, ABS resin, SEIS, SMA, hyperbranched polyester and antioxidant into a high-speed mixer and mix evenly, and then The obtained mixture and the weighed chopped glass fibers are respectively fed into a twin-screw extruder through a conical feeder a...

Embodiment 3

[0051] A high-efficiency enhanced halogen-free flame-retardant functional masterbatch for PC / ABS alloy direct injection molding, which is composed of two masterbatches A and B. The quality ratio of raw materials for the A masterbatch is as follows:

[0052]

[0053] The antioxidant is 4-[(4,6-Dioctylthio-1,3,5-triazin-2-yl)]-2,6-di-tert-butylphenol (trade name Antioxidant 565) and bis(2,4-dicumylphenyl) pentaerythritol diphosphite (trade name: Antioxidant S9228) in a mass ratio of 1:1.

[0054] The mass ratio of the raw materials of the B masterbatch is as follows:

[0055]

[0056] The preparation method of A masterbatch is as follows: Weigh all raw materials according to the above mass ratio requirements, put high-flow PC resin, ABS resin, SBS, SMA, hyperbranched polyester and antioxidant into a high-speed mixer and mix evenly, and then The obtained mixture and the weighed chopped glass fibers are respectively fed into a twin-screw extruder through a conical feeder an...

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Abstract

The invention belongs to the technical fields of modification and processing of plastics and particularly relates to an efficient enhanced flame-retardant functional master batch for direct injectionmolding of PC-ABS alloy and a preparation method of functional master batch. The functional master batch is formed by combing a master batch A with a master batch B, wherein the master batch A contains the following components in percentage by mass: 50.0wt%-60.0wt% of glass fibers, 20.0wt%-25.0wt% of high-flow PC resin, 10.0wt%-15.0wt% of ABS resin, 5.0wt%-10.0wt% of a thermoplastic styrene elastomer, 2.0wt%-3.0wt% of a styrene-maleic anhydride random copolymer, 1.0wt%-2.0wt% of hyperbranched polyester and 0.1wt%-0.3wt% of an antioxidant. Compared with a traditional plastic functional master batch, the functional master batch prepared by virtue of the preparation method has the advantages that, the problem that the modification effects are mutually damaged due to the mutual cutting wear between the glass fibers and a flame retardant in the machining process of an enhanced bromine-series flame-retardant PC/ABS alloy modified system is solved, and meanwhile, the problem that the machining temperatures of two modified systems are not matched is solved; and compared with a traditional enhanced bromine-series flame-retardant system, the modification effects of the two systems are remarkably improved.

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 PC / ABS alloy 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L55/02C08L35/06C08L67/00C08L53/02C08K7/14C08J3/22
CPCC08J3/226C08J2435/06C08J2453/02C08J2455/02C08J2467/00C08J2469/00C08K7/14
Inventor 李翰卿汪晓东邱小龙李朋威
Owner 江苏万纳普新材料科技有限公司
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