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Nano-composite nylon material with spraying-free highlight performance and preparation method thereof

A nano-composite, spray-free technology, applied in the field of nylon materials and its preparation, can solve the problems of inability to prepare nylon materials, achieve large market promotion value, simple preparation process, and improve compatibility

Active Publication Date: 2017-06-13
南京跃贝新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Public information CN105542453A, CN101899153A, etc. polymerize inorganic nanoparticles such as montmorillonite and nano-silica in the nylon matrix, but these methods cannot prepare high-gloss nylon materials free from spraying

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0034] Preparation of modified inorganic nano silicate:

[0035] A1. Add 5g of silicate nanoparticles into 100ml of N,N-dimethylformamide, stir evenly, and make suspension X;

[0036] A2. Evenly disperse 5g of silane coupling agent γ-aminopropyltriethoxysilane (ie: KH550 coupling agent) and 5g of succinic anhydride in 300ml of N,N-dimethylformamide solution. Stir at ℃ for 3h to obtain solution Y;

[0037] A3. Add the suspension X and 5ml of water prepared in step A1 to the solution Y in step A2, stir for 3 hours, separate, wash with ethanol, and dry to obtain a modified inorganic nano-silicate.

[0038] The silicate nano-particles are mica and have a sheet structure with a sheet thickness of 3 nm and a sheet diameter of 50 μm.

Embodiment 1

[0040] Mix 90 parts of caprolactam, 5 parts of water and 5 parts of benzoic acid; raise the temperature at a rate of 10°C / min, from room temperature to 180°C. At a temperature of 180°C, react for 2h.

[0041] Then reduce to normal pressure by excluding water vapor, add 1 part of modified inorganic nano-silicate, and stir evenly, then raise the temperature, the temperature rise rate is controlled at 10°C / min, and the temperature is raised to 240°C. At a temperature of 240°C, react for 4 hours to obtain a prepolymer.

[0042] The pressure is controlled at -20KPa, and the temperature of the distillate is 80°C, and the reaction is performed for 1 hour; the pressure is then controlled at -100KPa, and the temperature of the distillate is 60°C, and the reaction is continued for 1 hour.

[0043] After the reaction is completed, nitrogen gas is charged when the material is discharged, and the nanocomposite nylon material with spray-free high-gloss performance of the present invention ...

Embodiment 2

[0045] Mix 95 parts of caprolactam, 1 part of water and 4 parts of phenyladipic acid, adjust the pH value to 7.3, heat and melt; the molten reactant is first heated to 180 °C for 2 hours, and then reduced to normal pressure by removing water vapor, Add 1 part of modified inorganic nano-silicate and stir evenly, then raise the temperature to 240°C for 4 hours to obtain a prepolymer.

[0046] Control the pressure to -20KPa, and react for 1 hour; then control the pressure to -100KPa, and react for another 1 hour.

[0047] After the reaction is completed, nitrogen gas is charged when the material is discharged, and the nanocomposite nylon material with spray-free high-gloss performance of the present invention can be obtained.

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Abstract

The invention discloses a nano-composite nylon material with a spraying-free highlight performance and a preparation method thereof. The nano-composite nylon material is prepared according to the following steps: 1) mixing caprolactam, water and organic acid; 2) increasing temperature to 180-230 DEG C and reacting for 1-5h; 3) adding modified inorganic nanometer silicate, increasing temperature to 240-280 DEG C and reacting for 1-5h, thereby acquiring a prepolymer; 4) decompressing and polymerizing the prepolymer, thereby acquiring the nano-composite nylon material. A one-step in situ polymerization method is adopted by the invention; the compatibility of modified inorganic nanometer silicate and nylon is improved; the dispersion of the modified inorganic nanometer silicate in a nylon substrate is benefited; pure nylon has excellent mechanical property, thermal performance and spraying-free highlight performance; the nano-composite nylon material is simple in preparation process; the conditions can be easily controlled; the nano-composite nylon material is suitable for industrial production and can be widely applied to the production of the plastic shell products, such as, electric tool shells, automotive upholsteries and household appliances.

Description

technical field [0001] The invention relates to a nylon material and a preparation method thereof, in particular to a nanocomposite nylon material with spray-free high-gloss performance and a preparation method thereof. Background technique [0002] Nylon is a polymer compound containing amide groups in the main polymer chain. It has good mechanical properties, thermal stability, chemical stability, wear resistance and electrical insulation. It is widely used in automobiles, construction, electronic appliances, Chemical and other industries. Compared with nylon painted parts, spray-free high-gloss nylon products are easy to form, have a high yield, and the parts can be 100% recycled and reused, and will not produce toxic and harmful gases, dust and other pollutants to the environment. There is no manual or machine painting process in the preparation process of spray-free high-gloss nylon materials, which reduces the process and cost, avoids environmental pollution, and redu...

Claims

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Application Information

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IPC IPC(8): C08G69/16C08G69/14C08K9/06C08K9/04C08K3/34
CPCC08G69/14C08G69/16C08K3/34C08K9/04C08K9/06C08K2201/003C08K2201/011
Inventor 夏梦阁黄强范寅清
Owner 南京跃贝新材料科技有限公司
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