Novel degradable packaging material and preparation method thereof

A packaging material and a new type of technology, applied in the field of degradation, can solve the problems of decreased tensile strength of composite materials, limited improvement of overall degradation performance, holes and grooves, etc., to improve the interface bonding force, increase the crystallization temperature, and reduce the degree of crystallinity. Effect

Inactive Publication Date: 2020-01-17
YUYAO SUN RAIN SPRAYER
View PDF6 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Predecessors prepared (PLA/PBAT) composite materials by melt blending method. Experiments show that PBAT can inhibit the crystallization of PLA, resulting in holes and grooves in the material section. With the increase of the amount of PBAT, the size of the holes in the material section will increase. increase, which will lead to

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] A new type of degradable packaging material and its preparation method, including the following raw materials: PBAT, polylactic acid (PLA), compatibilizer, lubricant, chain extender, polyol, polyester polymer, catalyst, the raw materials are Parts by mass: 60~65 parts of PBAT, 35~40 parts of polylactic acid (PLA), 1phr of compatibilizer, 1phr of lubricant, 0.5phr of chain extender, 2~4phr of polyol and polyester polymers, 1 phr of catalyst ~ 2phr.

[0022] The lubricant adopts nano-level lubricants such as PTFE, molybdenum disulfide, and graphite.

[0023] The polyols and polyester polymers are represented by polyethylene glycol (PEG) and polycaprolactone (PCL), and the weight parts of the polyethylene glycol (PEG) and polycaprolactone (PCL) Both are 2~4phr.

[0024] The chain extender uses hexamethylene diisocyanate (HDI), and the catalyst uses stannous octoate.

[0025] The compatibilizer adopts ethylene methyl acrylate grafted glycidyl methacrylate (EMA-GMA) and dibenzoyl ...

Example Embodiment

[0032] Example: Preparation of required raw materials: PBAT, polylactic acid (PLA), compatibilizer, lubricant, chain extender, polyol, polyester polymer, catalyst, raw materials are: PBAT 60~65 parts by mass , Polylactic acid (PLA) 35-40 parts, compatibilizer 1phr, lubricant 1phr, chain extender 0.5phr, polyalcohol, polyester polymer 2~4phr, catalyst 1~2phr, the raw material lactic acid is fermented by biological method After preparing polylactic acid (PLA), blend PBAT and polylactic acid (PLA), synthesize copolymers of glycidyl methacrylate and other acrylic resins or styrene, and add 0.5 parts of chain extender to PLA / PBAT blends, or ethylene butyl acrylate grafted with glycidyl methacrylate (EBA-GMA), ethylene methyl acrylate grafted with glycidyl methacrylate (EMA-GMA) and dibenzoyl peroxide (BPO) is added as a compatibilizing modification for PLA / PBAT composites, using hexamethylene diisocyanate (HD) as a chain extender, under the action of the catalyst stannous octoate, ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to the technical field of degradable materials, particularly to a novel degradable packaging material and a preparation method thereof. The novel degradable packaging material comprises the following raw materials in parts by mass: 60-65 parts of PBAT, 35-40 parts of polylactic acid (PLA), 1 phr of a compatibilizer, a lubricant, 0.5 phr of a chain extender, 2-4 phr of polyalcohol and polyester polymers and 1-2 phr of a catalyst. The PLA is prepared through biological fermentation and has good biocompatibility and high strength, and final degradation products are carbon dioxide and water; a PBAT blending modification degradation technology is researched and developed, and a high-temperature and low-temperature melt blending method is designed to prepare a PBAT-PLA blend, so the tensile property and flexibility of the mixture are improved; an optimal mixing ratio is researched, analyzed and proportioned by utilizing a DSC curve, and the requirement for efficient andstable degradation is met; meanwhile, a high-compatibility combination process is researched and developed, so the problems that a blending modification method is not high in the compatibility of allmaterials and limited in the improvement of overall degradation performance are solved.

Description

technical field [0001] The invention relates to the technical field of degradation, in particular to a novel degradable packaging material and a preparation method thereof. Background technique [0002] PLA is an aliphatic polyester. Its synthetic raw material, lactic acid, can be completely fermented by biological methods, breaking away from traditional petroleum raw materials, and has good biocompatibility and high strength; at the same time, PLA is biodegradable. , the final degradation products are carbon dioxide and water, and will not pollute the environment, which makes it more and more people's attention today with the theme of environment and development, and has been widely used in the fields of daily necessities and biomedicine application. However, although PLA has high strength and compressive modulus, it is hard and tough, lacks flexibility and elasticity, is easily bent and deformed, and has poor impact and tear resistance, which limits PLA to a certain exten...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08L75/06C08L67/02C08L67/04C08L71/02C08L27/18C08L51/06C08K3/04C08K3/30C08G18/42B65D65/46
CPCB65D65/466C08G18/4213C08G18/428C08K2003/3009C08K2201/011C08L75/06C08L2201/06C08L2205/025C08L2205/035C08L2205/08C08L67/02C08L67/04C08L71/02C08L27/18C08L51/06C08K3/04C08K3/30Y02W90/10
Inventor 毛寅
Owner YUYAO SUN RAIN SPRAYER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap