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

Polylactic acid-nano titanium dioxide-polydimethylsiloxane composite material and preparation method thereof

A technology of polydimethylsiloxane and nano-titanium dioxide is applied in the field of polylactic acid-nano-titanium dioxide-polydimethylsiloxane composite material and its preparation, and can solve the problem of small compressive modulus, long degradation time and limited application. and other problems, to achieve the effect of high fracture toughness and Young's modulus, simple operation and excellent mechanical properties

Inactive Publication Date: 2015-07-01
SUZHOU VIVOTIDE BIOTECH
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many shortcomings in the mechanical properties of polylactic acid, such as: small compression modulus, low softening point, long degradation time, etc., these shortcomings limit its application in many aspects

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

Embodiment 1

[0020] A polylactic acid-nanometer titanium dioxide-polydimethylsiloxane composite material, comprising the following components in parts by weight: 36 parts of polylactic acid, 14 parts of nano-titanium dioxide, 6 parts of polydimethylsiloxane, chlorinated 0.1 part of ammonium, 2 parts of acrylate emulsion, 1 part of borax and 1 part of γ-aminopropyltriethoxysilane.

[0021] The preparation method comprises the steps of:

[0022] (1) Mix polylactic acid, nano-titanium dioxide and polydimethylsiloxane in a high-speed mixer according to the weight ratio;

[0023] (2) Send the above mixture into the twin-screw extruder through the metering feeder, and then send the ammonium chloride, water resistance enhancer, stabilizer and coupling agent into the twin-screw extruder sequentially through the metering feeder, The temperature of the extruder is set to 230°C, and the speed of the extruder is 100r / min;

[0024] (3) The twin-screw extruded strip is water-cooled, air-dried, and pel...

Embodiment 2

[0026] A polylactic acid-nanometer titanium dioxide-polydimethylsiloxane composite material, comprising the following components in parts by weight: 40 parts of polylactic acid, 16 parts of nano-titanium dioxide, 8 parts of polydimethylsiloxane, chlorinated 5 parts ammonium, 3 parts epoxy resin, 2 parts borax and 2 parts gamma-aminopropyltriethoxysilane.

[0027] The preparation method comprises the steps of:

[0028] (1) Mix polylactic acid, nano-titanium dioxide and polydimethylsiloxane in a high-speed mixer according to the weight ratio;

[0029] (2) Send the above mixture into the twin-screw extruder through the metering feeder, and then send the ammonium chloride, water resistance enhancer, stabilizer and coupling agent into the twin-screw extruder sequentially through the metering feeder, The temperature of the extruder is set to 240°C, and the speed of the extruder is 90r / min;

[0030] (3) The twin-screw extruded strip is water-cooled, air-dried, and pelletized to obt...

Embodiment 3

[0032] A polylactic acid-nanometer titanium dioxide-polydimethylsiloxane composite material, comprising the following components in parts by weight: 42 parts of polylactic acid, 16 parts of nano-titanium dioxide, 9 parts of polydimethylsiloxane, chlorinated 7 parts ammonium, 3 parts acrylate emulsion, 2 parts borax and 2 parts gamma-aminopropyltriethoxysilane.

[0033] The preparation method comprises the steps of:

[0034] (1) Mix polylactic acid, nano-titanium dioxide and polydimethylsiloxane in a high-speed mixer according to the weight ratio;

[0035] (2) Send the above mixture into the twin-screw extruder through the metering feeder, and then send the ammonium chloride, water resistance enhancer, stabilizer and coupling agent into the twin-screw extruder sequentially through the metering feeder, The temperature of the extruder is set to 250°C, and the speed of the extruder is 70r / min;

[0036] (3) The twin-screw extruded strip is water-cooled, air-dried, and pelletized ...

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 a polylactic acid-nano titanium dioxide-polydimethylsiloxane composite material and a preparation method thereof. The polylactic acid-nano titanium dioxide-polydimethylsiloxane composite material comprises the following components in parts by weight: 36-46 parts of polylactic acid, 14-20 parts of nano titanium dioxide, 6-12 parts of polydimethylsiloxane, 0.1-10 parts of ammonium chloride, 2-5 parts of water resistance enhancer, 1-4 parts of stabilizer and 1-3 parts of coupling agent. The preparation method comprises the following steps: uniformly mixing the polylactic acid, nano titanium dioxide and polydimethylsiloxane in a high-speed stirrer, sending the mixture into a double screw extruder via a metering feeder, and sequentially sending the ammonium chloride, water resistance enhancer, stabilizer and coupling agent into the double screw extruder via the metering feeder; cooling the extruded sample strip with water, airing and granulating. Compared with the polylactic acid, the polylactic acid composite material has the advantages of higher fracture toughness, higher Young's modulus and better mechanical properties. The preparation process is simple to operate and can easily implement large-scale production.

Description

technical field [0001] The invention relates to the field of biological materials, in particular to a polylactic acid-nanometer titanium dioxide-polydimethylsiloxane composite material and a preparation method thereof. Background technique [0002] Polylactic acid is a new type of polymer material. Due to its advantages of light weight, strong plasticity and good fatigue resistance, it has broad market prospects, such as extrusion, injection molding, automobiles, biomedicine and other fields. . However, there are many deficiencies in the mechanical properties of polylactic acid, such as: small compressive modulus, low softening point, long degradation time, etc. These deficiencies limit its application in many aspects. So how to improve the performance of polylactic acid has become a hot spot and difficulty in current research. [0003] Polydimethylsiloxane is a widely used high-molecular organosilicon compound, which has good light transmission, good biocompatibility, e...

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): C08L67/04C08L83/04C08L33/00C08L63/00C08L9/08C08K13/02C08K3/22C08K3/28C08K3/38C08K5/20C08K5/544B29C47/92B29C48/92
Inventor 王彦军刘乐峰郭玉芹
Owner SUZHOU VIVOTIDE BIOTECH