Novel nylon material and preparation method thereof, and application of novel nylon material in 3D printing

A nylon, a new type of technology, applied in the field of nylon materials, can solve problems such as finding solutions for the molecular structure of nylon, and achieve the effects of improving mechanical properties, strong rigidity, and solving easy warping

Active Publication Date: 2020-07-28
WANHUA CHEM GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods only modify the appearance properties of nylon materials, and do not seek solutions from the characteristics of nylon molecular structure.

Method used

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  • Novel nylon material and preparation method thereof, and application of novel nylon material in 3D printing
  • Novel nylon material and preparation method thereof, and application of novel nylon material in 3D printing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 1) Disperse 1mol of methyl methacrylate and 1mol of allylamine in 5000ml of methanol and water in a mixed solvent with a volume ratio of 1:1, add 0.01mol of EGDMA, 0.2mol of PVP K90, and 0.01mol of AIBN to the system in sequence, and then React at 60°C for 25 hours in a nitrogen environment, dehydrate and dry to obtain polymer a, and the number average molecular weight of polymer a is 105103Da as detected by GPC;

[0043] 2) Disperse 2.5 mol of polyamide 12 (1000) in 5000 mL of N-methylpyrrolidone, react with 5 mol of thionyl chloride and 0.05 mol of polymer a under a nitrogen atmosphere at 5°C for 5 h, pour the product into hot water, and collect The precipitated product is polymer b, and the number average molecular weight of polymer b detected by GPC is 156890Da;

[0044] 3) Reflux 0.05mol of polymer b and 8mol of sodium hydroxide in methanol solvent at 80°C for 18h, remove the solvent by rotary evaporation, wash the obtained powder with sodium bicarbonate, dilute hy...

Embodiment 2

[0047] 1) Disperse 3 mol of ethyl acrylate and 1 mol of diallylamine in 20000 ml of methanol and water in a mixed solvent with a volume ratio of 1:1, add 0.03 mol of EGDMA, 0.3 mol of PVP K90, and 0.03 mol of AIBN to the system in turn, at 60 ℃, under nitrogen environment for 30 hours, dehydration and drying to obtain polymer a, the number average molecular weight of polymer a detected by GPC is 120965Da;

[0048] 2) Disperse 5 mol of polyamide 11 (1000) in 20,000 mL of N-methylpyrrolidone, react with 8 mol of oxalyl chloride and 0.05 mol of polymer a at 20°C under a nitrogen atmosphere for 0.5 h, pour the product into hot water, and collect the precipitate The product is polymer b, and the number average molecular weight of polymer b detected by GPC is 278539Da;

[0049] 3) Reflux 0.05mol of polymer b and 5mol of sodium hydroxide in methanol solvent at 60°C for 25 hours, remove the solvent by rotary evaporation, wash the obtained powder with sodium bicarbonate, dilute hydroch...

Embodiment 3

[0052] 1) Disperse 5 mol of ethyl acrylate and 1 mol of crotonic acid in 20000 ml of ethanol and water in a mixed solvent with a volume ratio of 1:1, add 0.02 mol of EGDMA, 0.5 mol of PVP K90, 0.1 mol of AIBN to the system in turn, at 70 ℃, Reaction under nitrogen environment for 20h, dehydration and drying to obtain polymer a, the number average molecular weight of polymer a detected by GPC is 113296Da;

[0053] 2) Disperse 4 mol of polyamide 11 (1000) in 20,000 mL of N-methylpyrrolidone, react with 8 mol of oxalyl chloride and 0.05 mol of polymer a at 10°C under a nitrogen atmosphere for 4 hours, pour the product into hot water, and collect the precipitated product That is, polymer b, the number average molecular weight of polymer b detected by GPC is 164008Da;

[0054] 3) Reflux 0.05mol polymer b and 10mol sodium hydroxide in methanol solvent at 75°C for 18h, remove the solvent by rotary evaporation, wash the obtained powder with sodium bicarbonate, dilute hydrochloric acid...

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Abstract

The invention provides a novel nylon material and a preparation method thereof, and application of the novel nylon material in 3D printing. The preparation method of the nylon material comprises the following steps: 1) polymerizing an olefine acid ester monomer and a functionalized olefin monomer under an anaerobic condition to prepare a polymer a; 2) reacting a polyamide hard segment with amino or carboxyl groups in the polymer a to prepare a polymer b; 3) dissolving the polymer b, and adding a base catalyst to hydrolyze an ester group of the polymer b so as to generate carboxyl groups, thereby preparing a polymer c; and 4) adding an esterification catalyst to enable carboxyl groups generated by hydrolysis of the polymer c to react with hydroxyl groups in a polyether polyol soft segment,thereby obtaining the nylon material. According to a nylon molecule prepared by the method disclosed by the invention, a polyolefine acid ester chain segment is used as a main chain, and the polyamidehard segment and the polyether polyol soft segment are used as side chains, so the problem that a product is easy to warp when a nylon material is used for 3D printing can be solved.

Description

technical field [0001] The invention relates to a nylon material, in particular to a novel nylon material, a preparation method and its application in 3D printing. Background technique [0002] 3D printing technology, also known as rapid prototyping technology, plays a significant role in product innovation because it can realize rapid printing of single-piece or small-batch products. According to different molding methods, 3D printing technology can be divided into three molding methods: stereolithography (SLA), fused deposition modeling (FDM), and selective laser sintering (SLS). Nylon, also known as polyamide, is an indispensable material in the injection molding industry and one of the most important 3D printing materials. [0003] Nylon 12 (PA12) is a commonly used nylon material. Due to its excellent impact resistance and fatigue resistance, it occupies a large market in the field of FDM technology as a crystalline plastic. However, materials such as nylon 12 have lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G81/02C08F220/14C08F226/02C08F220/18C08F220/04C08F220/06B33Y70/00
CPCC08G81/028C08G81/025C08F220/14C08F226/02C08F220/18B33Y70/00C08F220/06C08F220/04
Inventor 杨伟翔刘彪高斌苑先佩曲振潘现路陈海波
Owner WANHUA CHEM GRP CO LTD
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