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Preparation method of foamed nylon plate

A nylon and sheet technology, which is applied in the field of preparation of foamed nylon sheets, can solve problems such as failure to achieve high-efficiency continuous production, and achieve the effects of promoting industrial development, excellent performance and good processing performance.

Active Publication Date: 2019-09-20
SIIICO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method still fails to achieve high-efficiency continuous production

Method used

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  • Preparation method of foamed nylon plate
  • Preparation method of foamed nylon plate
  • Preparation method of foamed nylon plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Get each material of following weight percent: 92 parts by weight of PA6 (M2500), the toughening agent that is 5 parts by weight, the chemical foaming agent that is 1 part by weight, the nucleating agent of 1 part by weight , 0.5 parts by weight of lubricant, 0.3 parts by weight of crosslinking agent, etc., are added to the mixer for pre-mixing and stirring in sequence, the mixing temperature is 30°C, the speed of the mixer is 500r / min, and the mixing time is 3 minutes;

[0035] Put the pre-mixed materials into the stretching rheological plasticizing extrusion equipment, and set the processing temperature of each section of the stretching rheological plasticizing extrusion equipment at 210°C for the first section, 225°C for the second section, and 230°C for the third section , the fourth section 230°C, the fifth section 240°C, the sixth section 235°C, the temperature of the connecting section 220°C, the temperature of the die head 1 zone 220°C, the temperature of the die...

Embodiment 2

[0037] Get each material of following percentage by weight: 89 parts by weight of PA6 (M2500), the toughening agent of 8 parts by weight, the chemical foaming agent of 1.5 parts by weight, the nucleating agent of 1 part by weight, weight 0.5 parts of lubricant, 0.3 parts by weight of crosslinking agent, etc., are added to the mixer for pre-mixing and stirring in sequence. The mixing temperature is 30°C, the speed of the mixer is 500r / min, and the mixing time is 3 minutes;

[0038]Put the pre-mixed materials into the stretching rheological plasticizing extrusion equipment, and set the processing temperature of each section of the stretching rheological plasticizing extrusion equipment at 210°C for the first section, 225°C for the second section, and 230°C for the third section , the fourth section 230°C, the fifth section 240°C, the sixth section 235°C, the temperature of the connecting section 220°C, the temperature of the die head 1 zone 220°C, the temperature of the die head ...

Embodiment 3

[0040] Get each material of following percentage by weight: 91 parts by weight of PA6 (YH800), the toughening agent of 6 parts by weight, the chemical foaming agent of 1 part by weight, the nucleating agent of 1 part by weight, weight 0.5 parts of lubricant, 0.3 parts by weight of crosslinking agent, etc., are added to the mixer for pre-mixing and stirring in sequence. The mixing temperature is 30°C, the speed of the mixer is 500r / min, and the mixing time is 3 minutes;

[0041] Put the pre-mixed materials into the stretching rheological plasticizing extrusion equipment, and set the processing temperature of each section of the stretching rheological plasticizing extrusion equipment at 210°C for the first section, 225°C for the second section, and 230°C for the third section , the fourth section 230°C, the fifth section 240°C, the sixth section 235°C, the temperature of the connecting section 220°C, the temperature of the die head 1 zone 220°C, the temperature of the die head 2 ...

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Abstract

The invention discloses a preparation method of a foamed nylon plate. The preparation method comprises the following steps: premixing nylon, a toughening agent, a chemical foaming agent, a nucleating agent, a lubricant and a crosslinking agent according to a formula, adding the obtained mixture into an extensional rheological plasticization and extrusion device, using an extensional deformation-based flow field to make nylon melted and plasticized and a gas formed after decomposition of the foaming agent mixed and dispersed in a polymer melt, performing extrusion through a foamed sheet die, and carrying out three-roller pressing to obtain the foamed nylon sheet. Addition of a small amount of the crosslinking agent can significantly improve the melt strength of PA, and the nylon plate produced through the preparation method by adopting the extensional rheological plasticization and extrusion device has the advantages of uniform and fine cells, high foaming rate, low aperture ratio, excellent performances, good processing performance, simple process flow, high production efficiency, suitableness for industrial scale production, and wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a preparation method of a foamed nylon sheet. Background technique [0002] Nylon macromolecules can form hydrogen bonds and have high crystallinity, so it has excellent properties of engineering plastics. Its excellent heat resistance, oil resistance, wear resistance and other advantages make it widely used in automobiles, machinery, electronics, It is widely used in many fields such as precision instruments and food packaging. As for the foamed nylon material, its uniformly distributed microporous structure improves the shortcomings of poor thermal stability and dimensional stability of nylon, and at the same time plays a role in toughening and strengthening. The foamed nylon material has the advantages of light weight, less raw material consumption, heat insulation, cushioning, etc., which makes it have more urgent industrial production requirements in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L77/06C08K5/14C08J9/10C08J9/08
CPCC08J9/107C08J9/105C08J9/103C08J9/102C08J9/08C08J9/0023C08J2377/02C08J2377/06C08K5/14C08J9/02C08J9/04
Inventor 张伟明邝清林冯绮琳李保银陈春铭陈立彬
Owner SIIICO TECH CO LTD
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