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Preparation method of distearoyl sodium tartrate diester modified talcum powder and nylon composite material

A technology of sodium stearyl tartrate and nylon composite materials, which is applied in the field of composite materials, can solve the problems of poor compatibility, low interface strength, and gaps formed at the interface, and achieve increased toughness, good compatibility, and improved dispersion uniformity Effect

Active Publication Date: 2020-04-03
MITSUBISHI ELECTRIC CHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the compatibility of talc powder and polymer matrix is ​​poor, and it is easy to form voids and defects on the interface when compounding, resulting in low interface strength.

Method used

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  • Preparation method of distearoyl sodium tartrate diester modified talcum powder and nylon composite material
  • Preparation method of distearoyl sodium tartrate diester modified talcum powder and nylon composite material
  • Preparation method of distearoyl sodium tartrate diester modified talcum powder and nylon composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Synthesis of distearoyl sodium tartrate diester surface modifier:

[0032] In a 250ml three-necked flask equipped with a stirrer, thermometer, and reflux condenser, add 1.1g of stearoyl chloride (it is easy to crystallize when stored at low temperature, and melt before use), 12ml of dichloromethane solvent, and stir to dissolve in an ice-water bath Cool for 20 minutes and mix well. Then take a 250 ml beaker, add 0.3 g of sodium tartrate and 100 ml of acetone, and stir to dissolve to obtain an acetone solution of sodium tartrate. Then, 2ml of triethylamine was slowly added dropwise to the flask, and stirred for 5 minutes under ice-water bath conditions. The freshly prepared acetone solution of sodium tartrate was gradually added dropwise to the reactor, the temperature was raised to room temperature, and the reaction was carried out for 12 hours. Suction and filter under reduced pressure 2 times, leaving the filtrate. After distillation, a large amount of white paste...

Embodiment 2

[0038] (1) Synthesis of distearoyl sodium tartrate diester surface modifier

[0039] In a 250ml three-necked flask equipped with a stirrer, a thermometer, and a reflux condenser, add 1.1g of stearoyl chloride (it is easy to crystallize when stored at low temperature, and melt before taking it), 12ml of dichloromethane solvent, and stir in an ice water bath for 20 Cool in minutes and mix well. Then take a 250 ml beaker, add 0.3 g of sodium tartrate and 100 ml of acetone, and stir to dissolve to obtain an acetone solution of sodium tartrate. Then 2ml of triethylamine was slowly added dropwise to the flask, and stirred for 5 min under ice-water bath conditions. The freshly prepared acetone solution of sodium tartrate was gradually added dropwise to the reactor, the temperature was raised to room temperature, and the reaction was carried out for 12 hours. Suction and filter under reduced pressure twice, leaving the filtrate. After distillation, a large amount of white paste-like s...

Embodiment 3

[0045] 1) Synthesis of silane coupling agent KH550 modified talc

[0046] Now take 2g of KH550 reagent, add it to a 250ml beaker, and then add 100ml of ethanol to make a uniform solution. Put 40g of talc into a 250ml three-necked flask equipped with a stirrer, thermometer and reflux condenser, take the above-mentioned synthetic silane coupling agent KH550 ethanol solution, add it in portions until the end, stir at 60℃ for 4 hours, wash, dry, and bake dry.

[0047] (2) Silane coupling agent KH550 modified talc and nylon anion copolymer

[0048] In a 250ml three-necked flask equipped with a stirrer, a thermometer, a reflux condenser and a vacuum device, add 100g of caprolactam, heat to 130℃ to melt, vacuum for 20 minutes to remove water, then add 2.8g of sodium hydroxide, stir for 10min, add 2g of modified talc powder, continue to vacuum for 5 minutes, add 0.75g of TDI, react for 30 seconds, pour into the mold, place in an oven for molding, the temperature of the oven is 165°C, and t...

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Abstract

The invention relates to a preparation method of a distearoyl sodium tartrate diester modified talcum powder and nylon composite material, and belongs to the field of composite materials. The preparation method comprises the following steps: firstly, skillfully selecting a dimeric surfactant consisting of a plurality of hydrophobic chains and a distearoyl sodium tartrate diester to modify talcum powder; then proportionally mixing the modified talcum powder with lactam or a diamine and a dibasic acid monomer, feeding an obtained mixture into a mold for casting molding by adopting an in-situ anionic free radical polymerization method, cooling and taking out the mold. The distearoyl sodium tartrate diester modified talcum powder and nylon composite material prepared by the method has the advantages of simple synthesis technique, higher component uniform dispersity and favorable compatibility, and has obvious performance in the aspects of mechanical properties and surface properties.

Description

Technical field [0001] The invention relates to a preparation method of sodium bis-stearyl tartrate diester modified talc powder and nylon composite material, in particular designed a novel amphiphilic modifier modified talc powder and a preparation method of nylon anion copolymerization, belonging to composite materials field. Background technique [0002] Talc powder is a magnesium silicate mineral talc family talc, the main component is talc containing magnesium silicate, the molecular formula is Mg 3 [Si 4 O 10 ](OH) 2 . Talc belongs to the monoclinic crystal system. The crystals are in the form of pseudo-hexagonal or rhomboid flakes, colorless, transparent or white. Hardness 1, specific gravity 2.7~2.8. Talc has excellent physical and chemical properties such as lubricity, anti-sticking, flow aid, fire resistance, acid resistance, insulation, high melting point, chemical inactivity, good hiding power, softness, good gloss, and strong adsorption. Talc The crystalline stru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08K9/04C08K3/34C08G69/18
CPCC08K9/04C08K3/34C08G69/18C08L77/02
Inventor 邱虹华杨菲汪济奎肖俊丁伟杰谢翰林
Owner MITSUBISHI ELECTRIC CHINA CO LTD
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