Method for improving fire resistance and mechanical property of polyethylene/nylon 6 blend

A polyethylene and blend technology, which is applied in the field of preparation of polymer composite materials, can solve the problem that flame retardant performance and compatibilization efficiency cannot be taken into account at the same time, and achieve the purpose of improving application value, improving flame retardant performance, and improving mechanical properties. Effect

Active Publication Date: 2018-08-31
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical purpose of the present invention is to prepare a polyethylene / nylon 6 blend with excellent flame retardancy, high compatibilization efficiency, and significantly improved mechanical properties of the finished material by adding the blending sequence of raw materials and improving the processing and preparation process to solve the technical problem that the flame retardancy and compatibilization efficiency of polyethylene / nylon 6 blends in the prior art cannot be taken into account at the same time

Method used

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  • Method for improving fire resistance and mechanical property of polyethylene/nylon 6 blend
  • Method for improving fire resistance and mechanical property of polyethylene/nylon 6 blend
  • Method for improving fire resistance and mechanical property of polyethylene/nylon 6 blend

Examples

Experimental program
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Effect test

Embodiment 1

[0038] The polyethylene / nylon 6 blend of present embodiment adopts following method to make:

[0039]Weigh a certain amount of linear low density polyethylene (LLDPE), nylon 6 (PA6), PE-g-MAH (solubilizer), ammonium polyphosphate (APP), pentaerythritol according to the ratio of 62:16:2:16:4 (PER), within the temperature range of 220~240°C, the twin-screw extruder is used to melt the mixed material to prepare the corresponding blend, and it is molded in the corresponding molding processing equipment at the temperature range of 220~240°C. Preparation of products. The mechanical properties and flame retardant properties tested are shown in Table 1.

Embodiment 2

[0041] The polyethylene / nylon 6 blend of present embodiment adopts following method to make:

[0042] Weigh a certain amount of linear low density polyethylene (LLDPE), nylon 6 (PA6), PE-g-MAH (solubilizer), ammonium polyphosphate (APP), pentaerythritol according to the ratio of 59:15:5:16:4 (PER), within the temperature range of 220~240°C, the twin-screw extruder is used to melt the mixed material to prepare the corresponding blend, and it is molded in the corresponding molding processing equipment at the temperature range of 220~240°C. Preparation of products. The mechanical properties and flame retardant properties tested are shown in Table 1.

Embodiment 3

[0044] The polyethylene / nylon 6 blend of present embodiment adopts following method to make:

[0045] Weigh a certain amount of linear low density polyethylene (LLDPE), nylon 6 (PA6), PE-g-MAH (solubilizer), ammonium polyphosphate (APP), pentaerythritol according to the ratio of 56:17:8:16:4 (PER), within the temperature range of 220~240°C, the twin-screw extruder is used to melt the mixed material to prepare the corresponding blend, and it is molded in the corresponding molding processing equipment at the temperature range of 220~240°C. Preparation of products. The mechanical properties and flame retardant properties tested are shown in Table 1.

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Abstract

The invention relates to a method for improving the fire resistance and mechanical property of a polyethylene/nylon6 blend. The method adopts the mode of two-step type step-by-step melt blending, controllable intumescent flame retardants are uniformly distributed in a nylon 6 phase domain in the polyethylene/nylon 6 blend, and then the fire resistance of the blend is greatly improved. Compared with a one-step processing method in the prior art, the limit oxygen index of the polyethylene/nylon 6 blend obtained through a step-by-step processing method can be increased by 15.6%-21.5%, the flame-retardant level of the blend can be increased to V-1 level or above from the phenomenon that the blend cannot be subjected to vertical combustion, and then the application value is greatly increased. The technical problem that in the prior art, for the polyethylene/nylon 6 blend, the fire resistance and the compatibilizing efficiency cannot be achieved simultaneously is solved.

Description

technical field [0001] The invention relates to the technical field of preparation of polymer composite materials, in particular to a method for improving the flame retardancy and mechanical properties of polyethylene / nylon 6 blends. Background technique [0002] Blending different types of polymer materials to prepare polymer alloys is a common means to improve the properties of polymer materials. Blending a small amount of nylon 6 with polyethylene can improve the defects of polyethylene such as poor heat resistance, easy creep at high temperature, and low mechanical strength. However, due to the poor compatibility between polyethylene and nylon 6, it is necessary to add a certain amount of solubilizer to improve the compatibility of the two, so as to achieve the purpose of utilizing the properties of nylon modified polyethylene. [0003] Both polyethylene and nylon 6 are flammable polymer materials. When heated at high temperature, they will degrade into low molecular we...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L77/02C08L51/06C08K3/32C08K5/053
CPCC08K2003/323C08L23/0815C08L2201/02C08L2205/03C08L2205/08C08L77/02C08L51/06C08K3/32C08K5/053
Inventor 陆昶高喜平黄新辉赵盼张帅姚大虎赫玉欣曹成林田训宇
Owner HENAN UNIV OF SCI & TECH
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