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PBAT foamed sheet production process

A production process and foam sheet technology, applied in the field of PBAT foam sheet production technology, can solve the problems of poor quality, complicated production process, and inconvenient use of PBAT foam sheet, and achieve uniform cell and foam Effect of Small Cell Size and Large Cell Density

Inactive Publication Date: 2022-01-28
江苏聚核高分子功能材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing polybutylene adipate terephthalate (PBAT) production process is complex and time-consuming, resulting in poor quality of the prepared PBAT foam sheet and inconvenient use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of PBAT foam sheet material production technology, comprises the following steps according to sequence:

[0018] S1: Mix 2 parts of chain extender, 1 part of nucleating agent, 1.8 parts of dispersant, 0.1 part of surfactant, and 0.1 part of antioxidant in parts by weight to obtain a mixture;

[0019] S2: Add the mixture obtained above to 81 parts of PBAT raw materials, and mix evenly to obtain mixture 1;

[0020] S3: The above-mentioned mixture is added to the extruder to be plasticized and melted, and at the same time, the foaming agent is injected for blending, and then transported to the molding head to form a foamed sheet.

[0021] Specifically, the nucleating agent is 3000 mesh talcum powder.

[0022] Specifically, the dispersant is lauryl sulfuric acid.

[0023] Specifically, the chain extender is glycerol.

[0024] Specifically, the surfactant is stearic acid or sodium dodecylbenzenesulfonate.

[0025] Specifically, the antioxidant is phosphite or thio...

Embodiment 2

[0027] A kind of PBAT foam sheet material production technology, comprises the following steps according to sequence:

[0028] S1: Mix 3.5 parts of chain extender, 3 parts of nucleating agent, 3.5 parts of dispersant, 1 part of surfactant and 1 part of antioxidant in parts by weight to obtain a mixture;

[0029] S2: Add the mixture obtained above to 88 parts of PBAT raw materials, and mix evenly to obtain mixture 1;

[0030] S3: The above-mentioned mixture is added to the extruder to be plasticized and melted, and at the same time, the foaming agent is injected for blending, and then transported to the molding head to form a foamed sheet.

[0031] Specifically, the nucleating agent is 3000 mesh talcum powder.

[0032] Specifically, the dispersant is lauryl sulfuric acid.

[0033] Specifically, the chain extender is glycerin.

[0034] Specifically, the surfactant is stearic acid or sodium dodecylbenzenesulfonate.

[0035] Specifically, the antioxidant is phosphite or thioes...

Embodiment 3

[0037] A kind of PBAT foam sheet material production technology, comprises the following steps according to sequence:

[0038] S1: Mix 5 parts of chain extender, 5 parts of nucleating agent, 5 parts of dispersant, 2 parts of surfactant and 2 parts of antioxidant in parts by weight to obtain a mixture;

[0039] S2: Add the mixture obtained above to 95 parts of PBAT raw materials, and mix evenly to obtain mixture 1;

[0040] S3: The above-mentioned mixture is added to the extruder to be plasticized and melted, and at the same time, the foaming agent is injected for blending, and then transported to the molding head to form a foamed sheet.

[0041] Specifically, the nucleating agent is 3000 mesh talcum powder.

[0042] Specifically, the dispersant is lauryl sulfuric acid.

[0043] Specifically, the chain extender is glycerin.

[0044] Specifically, the surfactant is stearic acid or sodium dodecylbenzenesulfonate.

[0045] Specifically, the antioxidant is phosphite or thioeste...

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PUM

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Abstract

The invention discloses a PBAT foamed sheet production process. The PBAT foamed sheet production process sequentially comprises the following steps: S1, mixing 2-5 parts by weight of a chain extender, 1-5 parts by weight of a nucleating agent, 1.8-5 parts by weight of a dispersant, 0.1-2 parts by weight of a surfactant and 0.1-2 parts by weight of an antioxidant to obtain a mixture; S2, adding the obtained mixture into 81-95 parts of a PBAT raw material, and uniformly mixing to obtain a mixture I; and S3, adding the mixture I into an extruder for plasticizing and melting, simultaneously injecting a foaming agent for blending, and conveying the mixture I to a molding machine head for molding to obtain the foamed sheet. According to the production process of the PBAT foamed sheet, the raw material composition is selected, the content of each raw material is optimized, and a proper proportion is selected, so that the prepared PBAT foamed sheet based on the supercritical fluid has relatively large cell density, small cell size, uniform cells and excellent impact resistance.

Description

technical field [0001] The invention belongs to the technical field of PBAT foam sheets, and in particular relates to a production process of PBAT foam sheets. Background technique [0002] Polymer foam sheet has the characteristics of low density, sound insulation, heat preservation, shock absorption, etc., and is widely used in packaging, automobiles, sports and leisure and other fields. According to different sources of polymer matrix, polymer foam sheets can be divided into petroleum-based polymer foam sheets and bio-based polymer foam sheets. Among them, in addition to the general properties of traditional petroleum-based polymer foam sheets, the bio-based polymer foam sheet is also bio-sourced and biodegradable; it can not only get rid of excessive dependence on petroleum resources, but also Reduce the negative impact on the environment after the end of product life cycle. [0003] Polybutylene adipate terephthalate (PBAT) resin is a biodegradable polymer that was fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/04C08L67/02C08K3/34
CPCC08J9/04C08J9/0066C08J2367/02
Inventor 许鹏刘克福
Owner 江苏聚核高分子功能材料研究院有限公司
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