PE foaming material

A foaming material and composite foaming agent technology, applied in the field of PE foaming material and its preparation, can solve problems such as poor rigidity and strength, and achieve the effect of improving rigidity and strength

Inactive Publication Date: 2019-04-16
陈敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a PE foam material

Method used

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  • PE foaming material
  • PE foaming material

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1

[0027] 1) Weigh 60 parts of PE, 18 parts of composite foaming agent, 20 parts of EPDM, 5 parts of POE, 18 parts of glass fiber, 2 parts of PE wax, 2 parts of EPDM-g-MAH, 0.1 part of Irganox168 and mix and stir evenly to obtain Mixture;

[0028] 2) Extruding and granulating the mixture obtained in step 1) to obtain PE foamable pellets P1.

[0029] 3) P1 is evenly distributed in a closed rigid mold, and then placed in an oven with a constant temperature of 180°C for 8 hours, then taken out and cooled and solidified to obtain a PE foamed product.

[0030] The twin-screw extruder in the step 2) includes six temperature zones arranged in sequence, with a temperature of 150°C in the first zone, 170°C in the second zone, 170°C in the third zone, 170°C in the fourth zone, and 170°C in the fifth zone. 170℃, six zone temperature 170℃, machine head temperature 170℃, screw speed 200r / min.

Example Embodiment

[0031] Example 2

[0032] 1) Weigh 80 parts of PE, 24 parts of composite blowing agent, 28 parts of EPDM, 10 parts of POE, 24 parts of glass fiber, 4 parts of PE wax, 4 parts of EPDM-g-MAH, 0.2 parts of Irganox1010, 0.2 parts of Irganox1330, 0.1 1 part of Irganox168 is mixed and stirred evenly to obtain a mixture;

[0033] 2) Extruding and granulating the mixture obtained in step (1) to obtain PE foamable pellets P2.

[0034] 3) P2 is evenly distributed in a closed rigid mold, and then placed in an oven with a constant temperature of 190°C for 12 hours, then taken out and cooled and solidified to obtain a PE foamed product.

[0035] The twin-screw extruder in step 2) includes six temperature zones arranged in sequence, with a temperature of 170°C in the first zone, 190°C in the second zone, 190°C in the third zone, 190°C in the fourth zone, and 190°C in the fifth zone. , The temperature of six zones is 190℃, the temperature of the machine head is 190℃, and the screw speed is 280r / min...

Example Embodiment

[0036] Example 3

[0037] 1) Weigh 70 parts of PE, 21 parts of composite foaming agent, 24 parts of EPDM, 8 parts of POE, 21 parts of glass fiber, 3 parts of PE wax, 3 parts of EPDM-g-MAH, 0.2 part of Irganox1010, 0.1 part of Irganox1330 and mix and Stir evenly to obtain a mixture;

[0038] 2) Extruding and granulating the mixture obtained in step 1) to obtain PE expandable pellets P3.

[0039] 3) P3 is evenly distributed in a closed rigid mold, and then placed in an oven with a constant temperature of 185°C for 10 hours, then taken out and cooled and solidified to obtain a PE foamed product.

[0040] The twin-screw extruder in step 2) includes six temperature zones arranged in sequence, with a temperature of 160°C in the first zone, 180°C in the second zone, 180°C in the third zone, 180°C in the fourth zone, and 180°C in the fifth zone. , The six-zone temperature is 180℃, the head temperature is 180℃, and the screw speed is 240r / min.

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Abstract

The invention relates to a PE foaming material, which comprises, by weight, the following components: 60-80 parts of PE; 18-24 parts of a composite foaming agent; 20-28 parts of EPDM; 5-10 parts of POE; 18-24 parts of glass fiber; 2-4 parts of PE wax; 2-4 parts of EPDM-g-MAH; 0.1-0.5 part of an antioxidant. According to the invention, the addition of ZnO can effectively promote the decomposition of the foaming agent AC, the N atom of an AC azo group has lone pair of electrons and belongs to a Lewis base substance, and Zn2+ of ZnO can accept lone pair of electrons and belongs to a Lewis acid substance, the two can easily promote the decomposition of the foaming agent AC; nano CeO2 mainly acts as a nucleating agent, which forms a liquid-solid interface between melt and gas. And the liquid-solid interface promotes heterogeneous nucleation of bubbles, so that the activation energy of bubble nucleation and the number of the bubble nuclei can be reduced, and finally a fine and high-closed-porosity bubble structure is formed.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to a PE foam material and a preparation method thereof. Background technique [0002] Polyethylene (PE) foam is an important foam material, widely used in household appliances, machinery parts, office supplies and communication equipment and other fields. PE foam has the advantages of light weight, non-toxic, odorless, and good water absorption, but the rigidity and strength of ordinary PE foam materials are poor, which limits the application of PE foam in some fields. Contents of the invention [0003] The purpose of the present invention is to provide a PE foam material to solve the problem of poor rigidity and strength of common PE foam materials. [0004] The present invention is achieved through the following technical solutions: [0005] A kind of PE foam material is made up of following components by weight: [0006] [0007] The PE is high-density polyethyl...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/16C08L23/08C08L51/04C08K13/06C08K9/06C08K7/14C08J9/10
CPCC08J9/103C08J9/0061C08J9/009C08J9/0095C08J2323/06C08J2423/08C08J2423/16C08J2451/04
Inventor 陈敏
Owner 陈敏
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