Unlock instant, AI-driven research and patent intelligence for your innovation.

Amphiphilic biodegradable TPU film and preparation method thereof

A biodegradable and amphiphilic technology, applied in the field of polyurethane, can solve the problems affecting the normal use of the film, lack of amphiphilicity, and poor biodegradability of TPU materials, and achieve the effect of improving amphiphilicity and biodegradability.

Active Publication Date: 2020-12-15
SUZHOU XIONGLIN NEW MATERIAL SCI & TECH CO LTD +1
View PDF9 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, commercially available TPU materials generally have poor biodegradability and lack of amphiphilicity, which affects the normal use and function of the film.

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
  • Amphiphilic biodegradable TPU film and preparation method thereof
  • Amphiphilic biodegradable TPU film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0049] This preparation example provides a kind of preparation method of modified polylactic acid, comprises the steps:

[0050] (1) The diatom frustules are ball milled with a planetary ball mill, the ball milling time is 10 hours, and the ball milling speed is 500r / min. After ball milling, the diatom frustules are placed in a vacuum oven and dried at 60°C for 24 hours;

[0051] (2) Place polylactic acid (number-average molecular weight 40,000) in a vacuum oven at 60°C and dry for 24 hours, then in parts by weight, 90 parts of polylactic acid, 10 parts of pretreated diatom frustules, toughening agent ( 10 parts of acetyl butyl citrate) and 3 parts of plasticizer (epoxidized soybean oil) are mixed and placed in an internal mixer for mixing. The temperature is 180 ° C, the rotating speed is 60 r / min, and the time is 15 minutes to obtain the modified polylactic acid.

[0052] Wherein, the preparation method of diatom frustules refers to the method in the literature (Wang, J.K.;...

preparation example 2

[0054] This preparation example provides a kind of preparation method of modified polylactic acid, comprises the steps:

[0055] (1) The diatom frustules are ball milled with a planetary ball mill, the ball milling time is 5 hours, and the ball milling speed is 1000r / min, after ball milling, the diatom frustules are placed in a vacuum oven and dried at 70°C for 18 hours;

[0056] (2) Place polylactic acid (number-average molecular weight 50000) in a vacuum oven and dry at 70°C for 12 hours, then in parts by weight, 85 parts of polylactic acid, 15 parts of pretreated diatom frustules, toughening agent ( 15 parts of polyethylene glycol 600) and 4 parts of plasticizer (dioctyl phthalate) were mixed and placed in an internal mixer for mixing at a temperature of 185°C, a speed of 50 r / min, and a time of 10 minutes. Modified polylactic acid is obtained.

preparation example 3

[0058] This preparation example provides a kind of preparation method of modified polylactic acid, comprises the steps:

[0059] (1) The diatom frustules are ball-milled with a planetary ball mill, the ball milling time is 12 hours, and the ball milling speed is 300r / min. After the ball milling, the diatom frustules are placed in a vacuum oven and dried at 50°C for 48 hours;

[0060] (2) Place polylactic acid (number-average molecular weight 45,000) in a vacuum oven at 50°C and dry for 48 hours, then in parts by weight, 95 parts of polylactic acid, 5 parts of pretreated diatom frustules, toughening agent ( 2 parts of polycaprolactone) and 1 part of plasticizer (tributyl citrate) are mixed and placed in an internal mixer for kneading. The temperature is 170 ° C, the speed is 80 r / min, and the time is 20 minutes to obtain the modified polylactic acid.

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 provides an amphiphilic biodegradable TPU film and a preparation method thereof. The amphiphilic biodegradable TPU film is prepared from modified castor oil polyoxyethylene ether, diisocyanate, higher aliphatic alcohol, modified polylactic acid, a chain extender and a catalyst. On the premise of ensuring good mechanical properties, the TPU film has good amphipathy and biodegradability; the castor oil polyoxyethylene ether, the diisocyanate and the higher aliphatic alcohol form an amphipathic biodegradable TPU film with good mechanical properties under the action of the catalyst and the chain extender, and the TPU film is matched with modified polylactic acid for use, so that the amphipathic property and the biodegradability of the TPU film are further improved; the preparation method of the TPU film is simple, raw materials are easy to obtain, the price is low, the implementation is easy, and the industrial large-scale production and application are facilitated.

Description

technical field [0001] The invention belongs to the field of polyurethane and relates to an amphiphilic biodegradable TPU film and a preparation method thereof. Background technique [0002] TPU (Thermoplastic polyurethane) is a new type of organic polymer synthetic material with excellent properties; for example, its wear resistance and resilience are superior to ordinary polyurethane and PVC, and its aging resistance is better than that of rubber. It is an alternative The ideal material for PVC and PU is an internationally recognized new polymer material. Thermoplastic polyurethane has a wide range of uses, for example, it can be used in footwear, ready-made clothing, medicine, defense supplies, sporting goods and industrial supplies materials, as well as outer sheath materials for wires and cables, as well as mobile phone buttons, plastic inflatable toys, bed sheets, desks, etc. Towels, shower curtains, furniture cloth, aprons, pianos, computer keyboards, laminated fabri...

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): C08L75/14C08K9/00C08K7/26C08K5/11C08K5/12C08J5/18C08G18/67C08G18/66C08G18/42C08G18/32C08G18/12
CPCC08J5/18C08G18/6795C08G18/664C08G18/428C08G18/3206C08G18/12C08J2375/14C08K9/00C08K7/26C08K5/11C08K5/12C08G18/2825C08G18/42Y02A40/28
Inventor 何建雄杨博
Owner SUZHOU XIONGLIN NEW MATERIAL SCI & TECH CO LTD