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

Polyester foam material and preparation method thereof

A foaming material, polyester technology, applied in the polyester application field, to achieve the effect of reducing sensitivity, excellent foaming performance, and improving melt strength

Active Publication Date: 2021-04-30
JIANGSU HENGLI CHEM FIBER
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of certain limitations in improving the melt strength of polyester at high temperatures in the prior art, the invention provides a polyester foam material and a preparation method thereof

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 foam material and preparation method thereof
  • Polyester foam material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A kind of preparation method of polyester foam material, concrete steps are as follows:

[0047] (1) preparation of modified polyester;

[0048] (1.1) Esterification reaction;

[0049] Prepare a slurry of terephthalic acid, ethylene glycol and 2,5-pyridinedicarboxylic acid with a molar ratio of 1:1.2:0.08, add catalyst (antimony trioxide), matting agent (titanium dioxide) and stabilizer (triphosphate triphosphate) phenyl ester) mixed uniformly, the addition of catalyst, matting agent and stabilizer is respectively 0.02wt%, 0.01wt% and 0.02wt% of the addition of terephthalic acid, pressurize and carry out esterification reaction in nitrogen atmosphere then, add The pressure is 0.25MPa, the temperature of the esterification reaction is 250°C, and the termination condition of the esterification reaction is: the distilled amount of water in the esterification reaction reaches 90% of the theoretical value;

[0050] (1.2) polycondensation reaction;

[0051] After the ester...

Embodiment 2

[0060] A kind of preparation method of polyester foam material, concrete steps are as follows:

[0061] (1) preparation of modified polyester;

[0062] (1.1) Esterification reaction;

[0063] Prepare a slurry of terephthalic acid, ethylene glycol and 2,5-pyridinedicarboxylic acid with a molar ratio of 1:1.2:0.09, add catalyst (antimony trioxide), matting agent (titanium dioxide) and stabilizer (triphosphate triphosphate) phenyl ester) mixed evenly, the addition of catalyst, matting agent and stabilizer is respectively 0.01wt%, 0.01wt% and 0.02wt% of the addition of terephthalic acid, pressurize and carry out esterification reaction in nitrogen atmosphere then, add The pressure is 0.25MPa, the temperature of the esterification reaction is 255°C, and the termination condition of the esterification reaction is: the distilled amount of water in the esterification reaction reaches 97% of the theoretical value;

[0064] (1.2) polycondensation reaction;

[0065] After the esterifi...

Embodiment 3

[0074] A kind of preparation method of polyester foam material, concrete steps are as follows:

[0075] (1) preparation of modified polyester;

[0076] (1.1) Esterification reaction;

[0077] Prepare a slurry of terephthalic acid, ethylene glycol and 2,5-pyridinedicarboxylic acid with a molar ratio of 1:1.2:0.10, add catalyst (antimony glycol), matting agent (titanium dioxide) and stabilizer (triphosphate Methyl ester) is mixed evenly, and the add-on of catalyst, matting agent and stabilizer is respectively 0.03wt%, 0.02wt% and 0.01wt% of terephthalic acid add-on, pressurized carries out esterification reaction in nitrogen atmosphere then, adds The pressure is 0.1MPa, the temperature of the esterification reaction is 256°C, and the termination condition of the esterification reaction is: the distilled amount of water in the esterification reaction reaches 97% of the theoretical value;

[0078] (1.2) polycondensation reaction;

[0079] After the esterification reaction is ov...

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
densityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a polyester foam material and a preparation method thereof. Modified polyester is subjected to solid-phase polycondensation tackifying and then blended with zinc chloride to prepare the polyester foam material. A preparation method of the modified polyester comprises the following steps: uniformly mixing terephthalic acid, ethylene glycol and 2, 5-pyridinedicarboxylic acid, and sequentially carrying out esterification reaction and condensation polymerization reaction to obtain the modified polyester. Polyester chain segments of the prepared polyester foam material comprise terephthalic acid chain segments, ethylene glycol chain segments and 2, 5-pyridine dicarboxylic acid chain segments, and the 2, 5-pyridine dicarboxylic acid chain segments of different polyester chain segments are coordinated through Zn < 2 + >. The molar ratio of the terephthalic acid chain segment to the 2, 5-pyridinedicarboxylic acid chain segment is 1: (0.08-0.10). And the 2, 5-pyridinedicarboxylic acid chain segment participates in coordination and contains an O atom on carbonyl and an N atom on pyridine. According to the preparation method of the polyester foam material, zinc ions are introduced to participate in coordination, so that the crosslinking point of a polymer is increased, and the sensitivity of flow activation energy of polyester to temperature is reduced; The foaming ratio of the prepared polyester foaming material is 16.3 to 19.7, and the apparent density is 60.5 to 75.6 kg / m < 3 >.

Description

technical field [0001] The invention belongs to the technical field of polyester applications, and relates to a polyester foam material and a preparation method thereof. Background technique [0002] The high symmetry of the molecular chain structure of polyester and the rigidity of the benzene ring make the product have good mechanical processing performance, chemical corrosion resistance and anti-microbial erosion performance, and because of the advantages of relatively low price and easy recycling, it is widely used It is used in various fields such as fibers, films, and plastic products. Polyester is a class of excellent thermoplastic engineering plastics. Its melting temperature and glass transition temperature are relatively high, and it has excellent heat resistance. Its long-term use temperature can reach 120°C. It has excellent weather resistance and chemical resistance, and its mechanical properties are excellent. [0003] Polyester has the following advantages a...

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): C08G63/685C08G63/91C08G63/80C08J9/12C08L67/02
CPCC08G63/6856C08G63/916C08G63/80C08J9/122C08J2367/02C08J2203/06C08J2203/08Y02P20/54
Inventor 范红卫汤方明尹立新孙晓华陈瑞窦弘杨超明
Owner JIANGSU HENGLI CHEM FIBER