Check patentability & draft patents in minutes with Patsnap Eureka AI!

Low-shrinkage low-linear expansion coefficient modified polypropylene material and preparation method thereof

A low linear expansion, polypropylene material technology, applied in the production of bulk chemicals, etc., can solve the problems of high linear expansion coefficient, high shrinkage rate of modified polypropylene, etc.

Active Publication Date: 2021-06-25
WANHUA CHEMICAL (NINGBO) CO LTD +1
View PDF8 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a modified polypropylene to solve the problems of high shrinkage and high linear expansion coefficient of modified polypropylene

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
  • Low-shrinkage low-linear expansion coefficient modified polypropylene material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] (1) Preparation of modified carboxylated multi-walled carbon nanotubes 3KG, prepared by including the following components:

[0055] S1, carboxylated multi-walled carbon nanotubes 4-6nm, 100 parts;

[0056] S2, furfurylamine, 40 parts;

[0057] S3, phosphoric acid, 0.2 parts.

[0058] The specific preparation process is as follows: put carboxylated multi-walled carbon nanotubes, furfurylamine monomers, and phosphoric acid into dimethyl sulfoxide, the amount of solvent is 2000% of S1, heating, the temperature is 140 ° C; stirring, stirring speed 80rpm, Stirring time 4h; centrifugation, centrifuge speed 30000 rpm, centrifugation time 8min; pour off the liquid, add absolute ethanol to wash, the amount added is 1000% of the mass of modified carboxylated multi-walled carbon nanotubes, wash 5min; centrifuge, The speed of the centrifuge is 30000 rpm, the centrifugation time is 8min, repeat 3 times; dry, dry in a vacuum drying oven, the vacuum drying temperature is 80°C, the ...

Embodiment 2

[0071] (1) Preparation of modified carboxylated multi-walled carbon nanotubes 0.5KG, prepared by including the following components:

[0072] S1, carboxylated multi-walled carbon nanotubes 10-20nm, 100 parts;

[0073] S2, N-furfurylaniline, 20 parts;

[0074] S3, phosphoric acid, 0.05 parts.

[0075] The specific preparation process is as follows: put carboxylated multi-walled carbon nanotubes, furfuryl-amino monomers, and phosphoric acid into dimethyl sulfoxide, the amount of solvent is 500% of S1, heating, the temperature is 160 ° C, stirring, stirring speed 60rpm, stirring time 2h, centrifugation, centrifuge speed 15000 rpm, centrifugation time 4min, pour off the liquid, add absolute ethanol to wash, the addition amount is 300% of the mass of modified carboxylated multi-walled carbon nanotubes, wash 3min, Centrifuge, the centrifuge speed is 15000 rpm, the centrifugation time is 4min, repeat three times, dry, dry in a vacuum oven, the vacuum drying temperature is 60°C, the...

Embodiment 3

[0088] (1) Preparation of modified carboxylated multi-walled carbon nanotubes 5KG, prepared by including the following components:

[0089] S1, carboxylated multi-walled carbon nanotubes 8-15nm, 100 parts;

[0090] S2, 2-(furfurylthio)ethylamine, 35 parts;

[0091] S3, phosphoric acid, 0.1 parts.

[0092] The specific preparation process is as follows: put carboxylated multi-walled carbon nanotubes, furfuryl-amino monomers, and phosphoric acid into dimethyl sulfoxide, the amount of solvent is 1500% of S1, heating, the temperature is 175 ° C, stirring, stirring speed 20rpm, stirring time 4h, centrifugation, centrifuge speed 25000 rpm, centrifugation time 2min, pour off the liquid, add absolute ethanol to wash, the amount added is 800% of the mass of modified carboxylated multi-walled carbon nanotubes, wash 5min, Centrifuge, centrifuge speed 25000 rpm, centrifugation time 2min, repeat three times, dry, dry in a vacuum oven, vacuum drying temperature is 75 ℃, vacuum degree is -...

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
sizeaaaaaaaaaa
shrinkageaaaaaaaaaa
Login to View More

Abstract

The invention provides a low-shrinkage low-linear expansion coefficient modified polypropylene material and a preparation method thereof. The raw materials mainly comprise polypropylene, carboxylated multi-walled carbon nanotubes, furfuryl-amino monomers, a catalyst, a flexibilizer, an antioxidant and a filler. The preparation method comprises the following steps: preparing the modified carboxylated multi-walled carbon nanotubes from a furfuryl-amino monomer and a carboxylated multi-walled carbon nanotube under the action of the catalyst, and then, adding the modified carboxylated multi-walled carbon nanotubes into polypropylene to prepare the low-shrinkage low-linear expansion coefficient modified polypropylene material. The composition material provided by the invention does not affect processing and molding, can prevent agglomeration of the carbon nanotubes, has improved mechanical properties, has permanent antistatic performance, and can be applied to parts of automobiles, household appliances and electronic products with high dimensional stability requirements.

Description

technical field [0001] The invention belongs to the field of modified polymer materials, and in particular relates to a modified polypropylene material with low shrinkage rate and low linear expansion coefficient and a preparation method thereof. Background technique [0002] As a general-purpose thermoplastic, polypropylene is widely used in household appliances, auto parts, and daily necessities due to its advantages such as non-toxicity, low price, low relative density, chemical corrosion resistance, high strength, and easy recycling. At present, parts with high size requirements, such as tailgate outer panels, fenders, and door sills, mostly use metal parts, which cost higher parts and increase energy consumption. It is of great significance to replace metal parts with plastic parts. However, the current polypropylene material has problems of large shrinkage rate and linear expansion coefficient, which restricts its use in parts that require high dimensional stability. ...

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): C08L23/12C08L23/14C08L23/08C08L53/02C08L23/16C08K9/04C08K9/02C08K3/04
CPCC08L23/12C08L23/14C08K2201/011C08L2201/04C08L2207/14C08L23/0815C08K9/04C08K9/02C08K3/041C08L53/025C08L23/16Y02P20/52
Inventor 花月庆顾永江陈连清
Owner WANHUA CHEMICAL (NINGBO) CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com