A kind of inorganic composite nano antibacterial and heat-resistant polylactic acid masterbatch and preparation method thereof

An inorganic nano-composite antibacterial technology, applied in the field of antibacterial and heat-resistant polylactic acid masterbatch and its preparation, can solve the problems of low thermal deformation temperature, weak thermal stability, narrow thermal processing window, etc. Hygiene, food safety, processability improvement effect

Active Publication Date: 2018-07-31
深圳市环美盛科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its relatively high glass transition temperature, high crystallinity and long crystallization time, it is brittle at low temperature or normal temperature, and its thermal stability is not strong at high temperature. Defects such as hydrolysis and narrow thermal processing window, and polylactic acid products are prone to mildew during storage and transportation because they are easy to absorb moisture and get damp

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] S1. Heat 40 parts of phthalate plasticizer and 5 parts of polyacrylate dispersant to 90°C and mix well;

[0045] S2. Add 50 parts of inorganic composite antibacterial materials with an original particle size of 5 μm to 20 μm (nano-zinc oxide: nano-titanium dioxide = 1:1), mix evenly, and grind for 4 hours with a grinder to prepare nanomaterials with a particle size of 20-100 nm;

[0046] S3. Add 5 parts of titanate coupling agent and grind for 60 minutes to obtain an inorganic nanocomposite antibacterial dispersion.

[0047] S4. Mix 80 parts of PLA 4032D, 15 parts of ADR-4370s, 20 parts of LAK-301, 100 parts of inorganic nanocomposite antibacterial dispersion, 10 parts of pentaerythritol ester, 15 parts of calcium stearate, and 25 parts of white oil, and add to the mixture Machine mixing and stirring evenly;

[0048] S5. Send it into a twin-screw granulator for granulation to obtain an inorganic composite nano-antibacterial heat-resistant polylactic acid masterbatch. ...

Embodiment 2

[0052] S1. Heat 20 parts of citrate plasticizer and 3 parts of low-molecular wax dispersant to 70°C and mix well;

[0053] S2. Add 30 parts of inorganic composite antibacterial materials with an original particle size of 5 μm to 20 μm (nano-zinc oxide: nano-calcium carbonate = 2:1) and mix evenly, grind for 3 hours with a grinder to prepare nanomaterials with a particle size of 20-100 nm;

[0054] S3. Add 3 parts of aluminate coupling agent and grind for 20 minutes to obtain an inorganic nanocomposite antibacterial dispersion.

[0055] S4. 50 parts of PLA 2003D, 10 parts of ADR-4368C / CS chain extender, 10 parts of TMC-328, 56 parts of inorganic nanocomposite antibacterial dispersion, 3 parts of pentaerythritol ester antioxidant, 2 parts of phosphite antioxidant , 10 parts of stearic acid heat stabilizer and 15 parts of naphthenic oil are mixed, and added to a blender to mix and stir evenly;

[0056] S5. Send it into a twin-screw granulator for granulation to obtain an inorgan...

Embodiment 3

[0060] S1. Heat 30 parts of epoxy ester plasticizer and 4 parts of polymaleic acid dispersant to 80°C and mix evenly;

[0061] S2. Add 40 parts of inorganic composite antibacterial materials with an original particle size of 5 μm to 20 μm (tetraacicular zinc oxide whiskers: calcium carbonate whiskers = 1:1), mix evenly, and grind for 3.5 hours with a grinder to prepare a particle size of 20 ~100nm nanomaterials;

[0062] S3. Add 4 parts of silane coupling agent and grind for 50 minutes to obtain an inorganic nanocomposite antibacterial dispersion.

[0063] S4. Mix 70 parts of PLA 2500HP polylactic acid, 12 parts of BioAdimide 500XT, 15 parts of TMC-306, 78 parts of inorganic nanocomposite antibacterial dispersion, 4 parts of pentaerythritol ester antioxidant, 4 parts of phosphite antioxidant, 12 parts of hard Calcium fatty acid heat stabilizer and 25 parts of glycerin are mixed, and added to a mixer to mix and stir evenly;

[0064] S5. Send it into a twin-screw granulator fo...

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Abstract

The invention discloses an inorganic compound nanometer antibacterial heat-resisting polylactic acid master batch and a preparation method thereof. The inorganic compound nanometer antibacterial heat-resisting polylactic acid master batch comprises 50-80 parts of polylactic acid, 10-15 parts of chain extender, 10-20 parts of a heat-resistant nucleating agent, 56-100 parts of inorganic nanometer compound antibacterial dispersion liquid, 5-10 parts of antioxidant, 10-15 parts of heat stabilizer and 15-35 parts of lubricant plasticizer, wherein the inorganic nanometer compound antibacterial dispersion liquid is obtained in the mode that toughening plasticizer, a dispersing agent and a surface treating agent are utilized to conduct surface treatment on an inorganic compound antibacterial agent in advance. The prepared inorganic compound nanometer antibacterial heat-resisting polylactic acid master batch is remarkable in antibacterial effect, good in heat resistance and capable of being directly added to a polylactic acid master batch body for preparing antibacterial heat-resisting products.

Description

technical field [0001] The invention belongs to the field of antibacterial polymer materials, in particular, the invention relates to an antibacterial heat-resistant polylactic acid masterbatch and a preparation method thereof. Background technique [0002] At present, with the increasing shortage of petroleum resources and the seriousness of environmental pollution, degradable non-petroleum-based polymer materials have attracted more and more attention. Polylactic acid (PLA) is a biodegradable material, which is obtained from lactic acid after fermentation of starch or corn and then polycondensed. It has good processing and molding properties and excellent mechanical properties. As a renewable and environmentally friendly material, it is expected to A series of polymer materials derived from petroleum resources are widely used in engineering plastics and daily necessities, packaging materials, medical materials and other related fields. [0003] Polylactic acid is a thermo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L91/00C08L91/06C08L33/04C08L35/02C08K9/04C08K3/22C08K5/12C08K5/11C08K3/26C08K5/1515C08K13/06C08K9/06C08K5/526C08K5/098C08K5/053
CPCC08K3/22C08K3/26C08K5/11C08K5/12C08K5/1515C08K9/04C08K2003/2241C08K2003/2296C08K2003/265C08L67/04C08L2205/03C08L91/06C08L33/04C08K13/06C08K5/103C08K5/098C08L91/00C08K5/524C08K5/09C08L35/02C08K9/06C08K5/526C08K5/053
Inventor 廖道权谢太和赵良知林道宏
Owner 深圳市环美盛科技有限公司
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