Polyester large-aperture conveyor belt and preparation method thereof

A large-diameter, conveyor belt technology, applied in the direction of single-component copolyester rayon, fiber type, textiles and papermaking, etc., can solve the problems of fiber unevenness, spinneret affecting fiber quality, etc., to reduce the amount of production Effect

Active Publication Date: 2018-05-15
JIANGSU HENGLI CHEM FIBER
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the problems in the prior art that the oil agent volatilizes quickly and easily bonds on the surface of the fiber, which causes uneven fiber and too many re

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
  • Polyester large-aperture conveyor belt and preparation method thereof
  • Polyester large-aperture conveyor belt and preparation method thereof
  • Polyester large-aperture conveyor belt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] The preparation method of polyester large-diameter conveyor belt, the specific steps are as follows:

[0074] (1) Preparation of modified polyester:

[0075] (a) Esterification reaction: terephthalic acid, ethylene glycol and 2-ethyl-2-methyl-1,3-propanediol in a molar ratio of 1:1.2:0.03 are made into a slurry, and antimony trioxide is added After mixing with triphenyl phosphate evenly, carry out the esterification reaction under pressure in a nitrogen atmosphere, the pressurized pressure is normal pressure, and the temperature of the esterification reaction is 250°C. 90% is the end point of the esterification reaction, wherein the addition of antimony trioxide is 0.01% of the weight of terephthalic acid, and the addition of triphenyl phosphate is 0.05% of the weight of terephthalic acid, wherein 2-ethyl- The structural formula of 2-methyl-1,3-propanediol is as follows:

[0076]

[0077] (b) polycondensation reaction; after the esterification reaction is over, sta...

Embodiment 2

[0082] The preparation method of polyester large-diameter conveyor belt, the specific steps are as follows:

[0083] (1) Preparation of modified polyester:

[0084] (a) Esterification reaction; prepare terephthalic acid, ethylene glycol and 2,2-diethyl-1,3-propanediol in a molar ratio of 1:1.3:0.04 into a slurry, add ethylene glycol antimony and phosphoric acid After the trimethyl ester is mixed evenly, the esterification reaction is carried out under pressure in a nitrogen atmosphere. The pressurized pressure is normal pressure, and the temperature of the esterification reaction is 260°C. When is the end point of the esterification reaction, the addition of ethylene glycol antimony is 0.02% of the weight of terephthalic acid, the addition of trimethyl phosphate is 0.03% of the weight of terephthalic acid, and 2,2-diethyl The structural formula of -1,3-propanediol is as follows:

[0085]

[0086] (b) polycondensation reaction; after the esterification reaction is over, st...

Embodiment 3

[0091] The preparation method of polyester large-diameter conveyor belt, the specific steps are as follows:

[0092] (1) Preparation of modified polyester:

[0093] (a) Esterification reaction; terephthalic acid, ethylene glycol and 2-butyl-2-ethyl-1,3-propanediol in a molar ratio of 1:1.4:0.05 are made into a slurry, and antimony acetate and After the trimethyl phosphate is mixed evenly, carry out the esterification reaction under pressure in a nitrogen atmosphere. % is the end point of the esterification reaction, wherein the addition of antimony acetate is 0.03% of the weight of terephthalic acid, and the addition of trimethyl phosphite is 0.01% of the weight of terephthalic acid, wherein 2-butyl-2- The structural formula of ethyl-1,3-propanediol is as follows:

[0094]

[0095] (b) polycondensation reaction; after the esterification reaction is finished, start the polycondensation reaction in the low vacuum stage under negative pressure conditions, and within 40 minut...

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
Kinematic viscosityaaaaaaaaaa
Kinematic viscosityaaaaaaaaaa
Strengthaaaaaaaaaa
Login to view more

Abstract

The invention relates to a polyester large-aperture conveyor belt and a preparation method thereof. According to the preparation method, high-strength polyester industrial yarns are obtained through solid phase polycondensation tackifying, melting, metering, extruding, cooling, oiling, stretching, heat setting and winding of the modified polyester, are then twisted and woven together to obtain a fabric layer, the fabric layer is coated with a synthetic polyurethane resin by two dipping and two rolling, and dried and baked to obtain the polyester large-aperture conveyor belt. An oiling agent used for oiling contains crown ether. The content of the crown ether is 67.30 to 85.58 wt%. The preparation method of the invention is simple and reasonable, and texture of the fabric layer of the polyester large-aperture conveyor belt finally obtained is a modified polyester with a molecular chain including a terephthalic acid chain segment, a glycol chain segment and a dihydric alcohol chain segment with g a branched chain, the breaking strength of the polyester large-aperture conveyor belt is equal to or more than 2900N, water pressure resistance is equal to or more than 100KPa, peel strengthis equal to or more than 9.0N/cm, when friction is equal to or more than 3500 times, coating does not change, and when temperature is equal to or less than -30 DEG C, the coating is crack-free.

Description

technical field [0001] The invention belongs to the field of fiber preparation, and relates to a polyester large-diameter conveyor belt and a preparation method thereof. Background technique [0002] Since the appearance of polyethylene terephthalate (PET) fiber, it has developed rapidly because of its excellent performance, and its output has become the crown of synthetic fiber in the world. Polyester fiber has a series of excellent properties such as high breaking strength, high elastic modulus, moderate resilience, excellent heat setting performance, good heat resistance and light resistance, acid resistance, alkali resistance and corrosion resistance, and the fabric prepared from it has wrinkle resistance. It is widely used in the fields of fiber, bottle packaging, film and sheet, etc., with the advantages of good stiffness and good stiffness. The output is increasing year by year, and the industry status has been significantly improved. [0003] However, during the pol...

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): D06N3/00D06N3/14D01F6/84C08G63/183C08G63/78D06M13/11D06M13/224D06M15/53D06M13/02D06M13/292D06M13/256D06M101/32
CPCC08G63/183C08G63/78D01F6/84D06M13/02D06M13/11D06M13/224D06M13/256D06M13/292D06M15/53D06M2101/32D06N3/0036D06N3/14
Inventor 王丽丽何亮窦弘丁竹君
Owner JIANGSU HENGLI CHEM FIBER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap