A kind of bio-based polyamide and its synthesis method

A technology of bio-based polyamide and synthesis method, which is applied in the field of bio-based polydecanediamide azelate and its synthesis, bio-based polyamide and its synthesis, and can solve the difficulty of increasing post-processing work, which is not as clean and environmentally friendly as water, Problems such as complicated operation steps and technological process

Active Publication Date: 2019-01-11
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of the above method are: on the one hand, the use of organic solvents as solvents is not as clean and environmentally friendly as water. After the monomer reaction to salt reaction is completed, subsequent processing operations such as low-temperature cooling, rotary evaporation, and drying are required in the later stage.
The operation steps and technological process are complicated, which is not conducive to environmental protection and also increases the difficulty of post-processing work.
On the other hand, when the polycondensation stage requires high temperature and high pressure to exhaust, the monomers in the system escape seriously, and the monomer ratio is out of balance. During the reaction, the amine-containing monomers need to be in excess of about 5%, and the excess monomer will Acts as an end cap, resulting in a decrease in the molecular weight and performance of the polymer

Method used

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  • A kind of bio-based polyamide and its synthesis method
  • A kind of bio-based polyamide and its synthesis method

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A method for synthesizing bio-based polyamides, comprising the steps of:

[0040] Preparation of 1,10-decanediamine solution: After adding bio-based 1,10-decanediamine into deionized water, gradually raise the temperature to 50°C at a rate of 1°C per minute with stirring to completely dissolve it in water to prepare a 1,10-decanediamine solution, wherein the mass ratio of 1,10-decanediamine to deionized water in the 1,10-decanediamine solution is 1:0.5, and the stirring speed is 50r / min;

[0041] Preparation of 1,9-azelaic acid solution: After adding bio-based 1,9-azelaic acid to deionized water, gradually raise the temperature to 80°C at a rate of 5°C per minute with stirring and condensing reflux to make it completely Dissolved in water to prepare a 1,9-azelaic acid solution, wherein the mass ratio of 1,9-azelaic acid to deionized water in the 1,9-azelaic acid solution is 1:0.5, and the stirring rate is 50r / min;

[0042] Synthesis of polydecanediamine azelaic acid:...

Embodiment 2

[0045] A method for synthesizing bio-based polyamides, comprising the steps of:

[0046] Preparation of 1,10-decanediamine solution: After adding bio-based 1,10-decanediamine into deionized water, gradually raise the temperature to 50°C at a rate of 5°C per minute with stirring to completely dissolve it in water 1,10-decanediamine solution was prepared, wherein the mass ratio of 1,10-decanediamine to deionized water in the 1,10-decanediamine solution was 1:1.5, and the stirring speed was 200r / min;

[0047] Preparation of 1,9-azelaic acid solution: After adding bio-based 1,9-azelaic acid to deionized water, gradually raise the temperature to 80°C at a rate of 10°C per minute, accompanied by stirring and condensing reflux, to make it completely Dissolved in water to prepare a 1,9-azelaic acid solution, wherein the mass ratio of 1,9-azelaic acid to deionized water in the 1,9-azelaic acid solution is 1:2.5, and the stirring speed is 300r / min;

[0048] Synthesis of polydecanedia...

Embodiment 3

[0051] A method for synthesizing bio-based polyamides, comprising the steps of:

[0052]Preparation of 1,10-decanediamine solution: After adding bio-based 1,10-decanediamine into deionized water, gradually increase the temperature to 50°C at a rate of 3°C per minute with stirring to completely dissolve it in water to prepare a 1,10-decanediamine solution, wherein the mass ratio of 1,10-decanediamine to deionized water in the 1,10-decanediamine solution is 1:1, and the stirring speed is 100r / min;

[0053] Preparation of 1,9-azelaic acid solution: After adding bio-based 1,9-azelaic acid to deionized water, gradually raise the temperature to 80°C at a rate of 5°C per minute with stirring and condensing reflux to make it completely Dissolved in water to prepare a 1,9-azelaic acid solution, wherein the mass ratio of 1,9-azelaic acid to deionized water in the 1,9-azelaic acid solution is 1:2, and the stirring rate is 200r / min;

[0054] Synthesis of polydecanediamine azelaic acid:...

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Abstract

The invention relates to biological-based polyamide and a synthesis method thereof. Renewable biological resources oleic acid and castor oil are used as raw materials to prepare biological-baseddibasic acid and a diaminemonomer, namely 1,9-azelaic acid and 1,10-decamethylene diamine, and then the biological-based polyamide is synthetized through one-step melting condensation reaction and is specifically biological-based polyazylenediamine. The biological-based polyazylenediamine is a 100% biological-based material, no organic solvent is added in the synthetic process, the biological-based polyamide conforms to the concept of green environmental protection, the polymerizing technological process is simplified, the monomerproportion is uniform, the raw materialmonomer consumption is remarkably reduced, and the product efficiency and preparation safety are improved. In addition, the biological-based polyazylenediamine has good dimensional stability, excellent mechanical properties, solvent corrosion resistance, easy processing and forming, can be used for engineering plastic and fiber products, can be also used in the fields such as manufacturingof other industrial materials and electronic components.

Description

technical field [0001] The invention belongs to the field of bio-based polymer materials, and in particular relates to a bio-based polyamide and a synthesis method thereof, in particular to a bio-based polydecanediamide azelate and a synthesis method thereof. Background technique [0002] Polyamide, referred to as PA, is called nylon in the industry, and has been developed for more than 80 years. With its excellent comprehensive properties, polyamide has become the most widely used thermoplastic engineering plastic at home and abroad, and it is also the second largest fiber material in the world after polyester fiber (polyester). Therefore, it is widely used in aerospace, machinery manufacturing, electronic information, chemical engineering, material packaging, sports and leisure and other fields. With the continuous expansion of market demand, polyamide will still show a good development trend. [0003] At present, most of the monomers for synthesizing polyamides come from...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C08G69/26C08G69/28
CPCC08G69/26C08G69/28
Inventor肖茹陶磊刘可李圆圆徐军王华平
OwnerDONGHUA UNIV