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PLA/TPU supercritical foaming composite material and preparation method thereof

A composite material and supercritical technology, which is applied in the field of foam materials, can solve the problems of low tensile strength of polylactic acid foam materials, poor elasticity of polylactic acid foam materials, poor heat resistance and use performance, etc., so as to improve the processing flow. Good performance, foaming effect, good effect for processing

Inactive Publication Date: 2020-06-05
福建安达福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

[0008] 1. Poor elasticity of polylactic acid foam material
[0009] 2. Polylactic acid foam material has low tensile strength and poor mechanical properties;
[0010] 3. The foaming effect is not good, resulting in uneven cells and low foaming ratio;
[0011] 4. The heat resistance and other comprehensive performance are poor, which affects the use

Method used

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  • PLA/TPU supercritical foaming composite material and preparation method thereof
  • PLA/TPU supercritical foaming composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] A PLA / TPU supercritical foaming composite material is made of raw materials comprising the following parts by weight:

[0060] 300-370 parts of polylactic acid,

[0061] 130-155 parts of polyether polyurethane,

[0062] Silicone modified polyurethane 40~48 parts,

[0063] 20-27 parts of hydroxyl silicone oil,

[0064] 14-18 parts of maleic anhydride grafted polyethylene,

[0065] 15-25 parts of glass fiber,

[0066] 7-10 parts of nucleating agent,

[0067] 6-8 parts of chain extender,

[0068] 5-8 parts of cross-linking agent.

[0069] In this embodiment, the PLA / TPU supercritical foam composite material is preferably, but not limited to, made of raw materials including the following parts by weight:

[0070] 335 parts of polylactic acid,

[0071] 143 parts of polyether polyurethane,

[0072] Silicone modified polyurethane 44 parts,

[0073] Hydroxy silicone oil 23.5 parts,

[0074] Maleic anhydride grafted polyethylene 16 parts,

[0075] 20 parts of glass f...

Embodiment 2

[0092] A PLA / TPU supercritical foaming composite material is made of raw materials comprising the following parts by weight:

[0093] 300 parts of polylactic acid,

[0094] 130 parts of polyether polyurethane,

[0095] Silicone modified polyurethane 40 parts,

[0096] Hydroxy silicone oil 20 parts,

[0097] 14 parts of maleic anhydride grafted polyethylene,

[0098] 15 parts of glass fiber,

[0099] 7 parts of nucleating agent,

[0100] 6 parts of chain extender,

[0101] 5 parts of crosslinking agent.

[0102] In this embodiment, the nucleating agent is a mixture of nucleating agent TMC-328 and zinc acrylate.

[0103] In this embodiment, the mass ratio of the nucleating agent TMC-328 and zinc acrylate in the mixture of the nucleating agent TMC-328 and zinc acrylate is 1:0.35.

[0104] In this embodiment, the chain extender is a mixture of the polyurethane chain extender MCDEA and 4-hydroxyethyloxyethyl-1-hydroxyethylphenylene diether.

[0105] In this embodiment, the...

Embodiment 3

[0115] A PLA / TPU supercritical foaming composite material is made of raw materials comprising the following parts by weight:

[0116] 370 parts of polylactic acid,

[0117] 155 parts of polyether polyurethane,

[0118] Silicone modified polyurethane 48 parts,

[0119] Hydroxy silicone oil 27 parts,

[0120] 18 parts of maleic anhydride grafted polyethylene,

[0121] 25 parts of glass fiber,

[0122] 10 parts of nucleating agent,

[0123] 8 parts of chain extender,

[0124] 8 parts of crosslinking agent.

[0125] In this embodiment, the nucleating agent is a mixture of nucleating agent TMC-328 and zinc acrylate.

[0126] In this embodiment, the mass ratio of the nucleating agent TMC-328 and zinc acrylate in the mixture of the nucleating agent TMC-328 and zinc acrylate is 1:0.42.

[0127] In this embodiment, the chain extender is a mixture of the polyurethane chain extender MCDEA and 4-hydroxyethyloxyethyl-1-hydroxyethylphenylene diether.

[0128] In this embodiment, th...

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Abstract

The invention discloses a PLA / TPU supercritical foaming composite material and a preparation method thereof. The PLA / TPU supercritical foaming composite material is prepared from the following raw materials in parts by weight: 300 to 370 parts of polylactic acid, 130 to 155 parts of polyether polyurethane, 40 to 48 parts of organic silicon modified polyurethane, 20 to 27 parts of hydroxyl siliconeoil, 14 to 18 parts of maleic anhydride grafted polyethylene, 15 to 25 parts of glass fiber, 7 to 10 parts of a nucleating agent, 6 to 8 parts of a chain extender and 5 to 8 parts of a cross-linkingagent. The PLA / TPU supercritical foaming composite material disclosed by the invention is relatively high in tensile strength and good in mechanical property; the rebound rate is high, and the reboundperformance is excellent; the density is low, the foaming ratio is high, the pore size (diameter) is moderate, pores are uniform, and the foaming effect is good; the composite material has comprehensive mechanical properties such as ultra-light weight and good elasticity; in addition, the composite material is degradable and environment-friendly.

Description

technical field [0001] The invention relates to the technical field of foaming materials, in particular to a PLA / TPU supercritical foaming composite material and a preparation method thereof Background technique [0002] Polylactic acid (PLA) is a biodegradable polymer prepared by chemical synthesis from renewable plant resources. Various films, fibers and other products prepared can be widely used in clothing, textiles, non-woven fabrics, packaging, agricultural , forestry, medical and health supplies, daily necessities and other fields. PLA has excellent biocompatibility and biodegradability, and the final degradation products are carbon dioxide and water, which will not pollute the environment. The polylactic acid foaming material is prepared by melting and kneading, molding and foaming; the polylactic acid foaming material can also be prepared by supercritical carbon dioxide. [0003] Polylactic acid foamed materials can replace petroleum-based foamed plastics in packa...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L75/08C08L75/04C08L83/04C08L51/06C08K13/04C08K7/14C08K5/14C08K5/098C08J9/12
CPCC08J9/122C08J9/0061C08J9/0095C08J9/0085C08J9/0023C08J2203/06C08J2203/08C08J2367/04C08J2475/08C08J2475/04C08J2483/04C08J2451/06
Inventor 丁尤权吕方舟丁雪峰杨文华丁星懿林清锴
Owner 福建安达福新材料科技有限公司
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