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

Preparation method of cellulose whisker composite modified TPU cast film

A cellulose whisker and compound modification technology, applied in the field of new materials, can solve the problems of general and unsatisfactory tensile properties of TPU cast film, and achieve the goals of reducing water vapor transmission coefficient, strengthening force and promoting crystallization Effect

Inactive Publication Date: 2019-10-18
合肥绿普包装材料有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tensile properties of the existing TPU cast film are average, which cannot meet the needs of some occasions in the market

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
  • Preparation method of cellulose whisker composite modified TPU cast film
  • Preparation method of cellulose whisker composite modified TPU cast film
  • Preparation method of cellulose whisker composite modified TPU cast film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A preparation method of cellulose whisker composite modified TPU cast film, the particle microrods, cellulose whiskers are uniformly mixed with TPU particles in a twin-screw extruder under the promotion of coupling agent kh-540, After vacuum drying, the casting film is prepared by casting equipment;

[0020] The mass ratio of the particle microrods to the cellulose whiskers is 3:6;

[0021] The mass ratio of the particle microrods to the coupling agent is 10:1;

[0022] The mass ratio of the particle microrods to the TPU particles is 1:70.

[0023] As a further solution, the method for preparing particle microrods includes the following steps:

[0024] Add 1 part of citric acid to 20 parts of ethanol solution in parts by weight, stir at 30°C for 15 minutes at a speed of 120r / min to obtain a mixed solution, add 5 parts of ethyl orthosilicate, 0.2 One part of hexamethylcyclotrisilazane and 9 parts of ammoniacal liquor, wherein the ammoniacal liquor was added dropwise, ...

Embodiment 2

[0032] A preparation method of cellulose whisker composite modified TPU cast film, the particle microrods, cellulose whiskers are uniformly mixed with TPU particles in a twin-screw extruder under the promotion of coupling agent kh-540, After vacuum drying, the casting film is prepared by casting equipment;

[0033] The mass ratio of the particle microrods to the cellulose whiskers is 3: 8;

[0034] The mass ratio of the particle microrods to the coupling agent is 10:1;

[0035] The mass ratio of the particle microrods to the TPU particles is 1:75.

[0036] As a further solution, the method for preparing particle microrods includes the following steps:

[0037] Add 1.2 parts of citric acid to 20 parts of ethanol solution in parts by weight, stir at 30°C for 20 minutes at a speed of 120r / min to obtain a mixed solution, add 5 parts of ethyl orthosilicate, 0.2 One part of hexamethylcyclotrisilazane and 9 parts of ammoniacal liquor, wherein the ammoniacal liquor was added dropwi...

Embodiment 3

[0045] A preparation method of cellulose whisker composite modified TPU cast film, the particle microrods, cellulose whiskers are uniformly mixed with TPU particles in a twin-screw extruder under the promotion of coupling agent kh-540, After vacuum drying, the casting film is prepared by casting equipment;

[0046] The mass ratio of the particle microrods to the cellulose whiskers is 3:7;

[0047] The mass ratio of the particle microrods to the coupling agent is 10:1;

[0048] The mass ratio of the particle microrods to the TPU particles is 1:72.

[0049] As a further solution, the method for preparing particle microrods includes the following steps:

[0050]Add 1.1 parts of citric acid to 20 parts of ethanol solution in parts by weight, stir at 30°C at a speed of 120r / min for 18min to obtain a mixed solution, add 5 parts of ethyl orthosilicate, 0.2 One part of hexamethylcyclotrisilazane and 9 parts of ammoniacal liquor, wherein the ammoniacal liquor was added dropwise, and...

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
Granularityaaaaaaaaaa
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

Relating to the technical field of new materials, the invention discloses a preparation method of a cellulose whisker composite modified TPU cast film. The method includes: mixing particle microrods and cellulose whiskers with TPU particles uniformly in a twin-screw extruder under the acceleration of a coupling agent kh-540, then performing vacuum drying treatment, and then utilizing tape castingequipment to prepare the cast film. The method utilizes the acceleration of the coupling agent for compound modification of the TPU cast film through particle microrods and cellulose whiskers, intermolecular bonding can occur between particle microrods, cellulose whiskers and TPU, the binding force is strong, and the comprehensive mechanical properties of the TPU cast film can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of new materials, and in particular relates to a preparation method of a cellulose whisker composite modified TPU casting film. Background technique [0002] With the increasing development of the application field of polymer films, the requirements for the performance of film materials are getting higher and higher. The commonly used polysulfone and polyolefin films can no longer fully meet the market demand. In this case, polyurethane films emerged as the times require. Polyurethane elastomer (TPU) is composed of linear polyol, organic diisocyanate and small molecule chain extender, and its overall performance depends on the type of polyol, isocyanate, structure of chain extender and the ratio of soft segment to hard segment. By selecting the components of TPU and adjusting their ratio, the properties of the material can be changed in a wide range, so that it has both the flexibility of rubber and the rigi...

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): C08J5/18C08L75/04C08L1/04C08K7/00C08K3/34
CPCC08J5/18C08J2375/04C08J2401/04C08K3/34C08K7/00
Inventor 张腾飞
Owner 合肥绿普包装材料有限公司
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