Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing modified polycarbonate sub-lactone material

A technology of polylactene carbonate and polypropylene carbonate, which is applied in the field of preparation of modified polylactene carbonate materials, can solve the problems of large consumption, high carbon dioxide emission, inability to form a virtuous cycle, etc., and achieves a good phase. Capacitance and the effect of improving mechanical properties

Active Publication Date: 2014-10-29
INNER MONGOLIA AGRICULTURAL UNIVERSITY
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Carbon dioxide is widely distributed in nature, mainly in the atmosphere and water, and it circulates in nature, but with the acceleration of industrialization, the emission of carbon dioxide is increasing, and it is no longer possible to form a virtuous cycle
There are also several types of additives that are used in relatively large amounts, reaching ten to dozens of parts (in the plastics industry, the amount of additives is measured in "parts", that is, the mass parts of additives used in 100 parts by mass of resin or raw rubber) There are many, such as plasticizers, reinforcing agents, flame retardants, anti-impact agents, etc. Although the amount of additives is small, the effect is very significant, and it can even make certain properties have greater defects or be difficult to process. And polymers that have almost lost their practical value become valuable materials

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing modified polycarbonate sub-lactone material
  • Method for preparing modified polycarbonate sub-lactone material
  • Method for preparing modified polycarbonate sub-lactone material

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0043] Such as Figure 1-2 Shown, a kind of preparation method of modified polypropylene carbonate material, the method step is as follows:

[0044] Step 1. Drying of raw materials

[0045] Dry polypropylene carbonate (PPC), amino acid (AA) and another degradable polymer material in a vacuum drying oven for 24 hours at a temperature of 25°C and a vacuum degree of 0.07-0.09 MPa;

[0046] Step 2. One-time blending and extrusion

[0047] According to the number of parts, several parts of PPC and AA are uniformly mixed, and then the mixed raw materials are placed in a twin-screw extruder with a rotation speed of 28r / min, melt-blended at 120-150°C, banburyed for 10 minutes, and then extruded out, and then pelletize the material to obtain a modified PPC / AA composite material;

[0048] Step 3, secondary blending and extrusion

[0049] Mix PPC, AA, and another degradable polymer material uniformly, and then melt and blend the mixed raw materials in a twin-screw extruder at 120-190...

Embodiment 1

[0060] Embodiment 1: A kind of preparation method of modified polypropylene carbonate material, calculated by weight, first 95 parts of PPC and 5 parts of Asp are uniformly mixed, and then the mixed material is added into a twin-screw extruder Melt blending, banburying and extrusion granulation are carried out at a temperature of 120°C to obtain a modified PPC material, that is, a PPC / Asp composite material. Weigh 3.5 g of the first-time modified composite material, and heat-press it on a hot press at a temperature of 110°C to form a film to obtain a first-time modified polypropylene carbonate composite film;

Embodiment 2

[0061] Example 2: After uniformly mixing 50 parts of PPC, 5 parts of Asp and 45 parts of PBS, they were added to a twin-screw extruder at a temperature of 120°C for melt blending, banburying and extrusion granulation to obtain The secondary modified PPC material is PPC / Asp / PBS composite material. Weigh 3.5 g of the secondary modified composite material, and press it on a hot press at a temperature of 110° C. to form a film to obtain a secondary modified polypropylene carbonate composite film.

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

PropertyMeasurementUnit
glass transition temperatureaaaaaaaaaa
yield strengthaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a method for preparing a modified polycarbonate sub-lactone material. The polycarbonate sub-lactone is modified twice, wherein the primary modification components comprise 95-99.5 parts of polycarbonate sub-lactone and 0.5-5 parts of amino acids; and the secondary modification components comprise 10-90 parts of polycarbonate sub-lactone, 0.5-5 parts of amino acids and 5-89.5 parts of polylactic acid or poly(butylene succinate) or poly-caprolactone. The method comprises the following steps: adding the mixture into a twin-screw extruder, performing melt blending, extruding and granulating, and preparing the composite material. The thermal stability and mechanical strength of the composite material subjected to modification twice far exceed those of pure polycarbonate sub-lactone, so that the processability of the modified polycarbonate sub-lactone is improved. The method is simple in process, high in production efficiency, low in cost and pollution-free and is suitable for industrial production.

Description

technical field [0001] The invention relates to the field of polymer material processing, in particular to a preparation method of a modified polylactone material. Background technique [0002] Carbon dioxide is widely distributed in nature, mainly in the atmosphere and water, and it circulates in nature. However, with the acceleration of industrialization, the emission of carbon dioxide is increasing, and a virtuous cycle cannot be formed at present. According to statistics, at present, the carbon dioxide produced by burning fossils and agricultural production in the world leads to a net increase of 9 billion tons in the atmosphere every year, resulting in an annual increase of 1.9ppm in the concentration of carbon dioxide in the atmosphere, making it the main source of climate warming. [0003] On the other hand, most of the currently used synthetic polymer materials are synthesized from petroleum or natural gas, and such resources are becoming increasingly scarce; on the ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L67/02C08L67/04C08K5/17B29C47/92C08J5/18B29C48/92
Inventor 董同力嘎吴佳鑫云雪艳
Owner INNER MONGOLIA AGRICULTURAL UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com