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Nylon nucleating agent and its preparation method and use

A nucleating agent and nucleating technology, which is applied in the field of nylon nucleating agent and its preparation, can solve the problems of decreased impact resistance of materials, ineffective nucleating effect, and increased bending strength of nylon, so as to reduce shrinkage, Effects of shortening the injection molding cycle and increasing the heat resistance temperature

Inactive Publication Date: 2012-05-02
SHANGHAI LUJIU RUBBER PLASTIC NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few types of nylon nucleating agents available commercially, and there are even fewer nucleating agents with excellent application effects.
[0004] At present, there are two types of nylon nucleating agents that have been unanimously recognized in industrial production. One is the nucleating agent P22 introduced by Bruggolen, Germany, which is A composite of polyamide polyamide2.2 and inorganic substances; the nylon nucleating agent has a good nucleating effect, and the tensile and bending strength of the nylon increase after adding the nucleating agent, but the resistance of the material Significant drop in impact properties and the high price of this nucleating agent limits its use
The other is the nucleating agent CAV102 launched by Clariant in Klein, Germany, which is a calcium salt with a long alkyl chain, but the nylon nucleating agent has a tendency to nucleate during application due to its inherent molecular structure characteristics. not very effective

Method used

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  • Nylon nucleating agent and its preparation method and use
  • Nylon nucleating agent and its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Add 25.0g MDI (99.9%, NPU from Japan) into a 250ml three-necked flask, add 150ml chloroform solvent, heat to 50°C, add 10.9g cyclohexylamine (analytical grade, Sinopharm Group) and 11.0g cyclohexanol (analytical grade , Sinopharm Group), adding catalyst 0.1ml triethylamine, stirring and reacting at 1000rpm for 2 hours. Cool to room temperature, filter, then wash the insoluble product 3 times with chloroform to remove unreacted amine and alcohol, dry it under vacuum at 60°C for 4 hours, and pulverize to obtain a white to light yellow powder, which is nylon nucleating agent 1.

Embodiment 2

[0031] Add 25.0g MDI (99.9%, Japanese NPU) into a 250ml three-neck flask, add 150ml chloroform, heat to 70°C, add 10.9g cyclohexylamine (analytical grade, Sinopharm Group) and 7.9g 1,4-cyclohexanediol (reagent grade, Shanghai Bangcheng Chemical Co., Ltd.), add 0.1ml triethylamine, stir and react at 1000rpm for 2 hours; cool to room temperature, filter, then wash the insoluble product with chloroform three times to remove unreacted amine and alcohol, Vacuum-dried at 60°C for 4 hours and pulverized to obtain a white to light yellow powder, which is nylon nucleating agent 2.

Embodiment 3

[0033] Add 17.4g TDI (99.5%, Mitsui, Japan) into a 250ml three-necked flask, add 150ml chloroform, heat to 50°C, add 10.9g cyclohexylamine (analytical grade, Sinopharm) and 11.0g cyclohexanol (analytical grade, Sinopharm Group), adding 0.1ml of triethylamine, stirring and reacting at 1000rpm for 2 hours. Cool to room temperature, filter, then wash the insoluble product three times with chloroform to remove unreacted amine and alcohol, dry it in vacuum at 60°C for 4 hours, and pulverize to obtain a white to light yellow powder, which is nylon nucleating agent 3.

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Abstract

The invention discloses a nylon nucleating agent and its preparation method and use. The nylon nucleating agent is prepared from a cyclohexyl isocyanate or a phenyl isocyanate and a cyclohexyl alcohol, a cyclohexyl phenol, a cyclohexyl acid, a cyclohexyl amine compound, a phenyl alcohol, a phenyl phenol, a phenyl acid or a phenyl amine compound through condensation addition. The nylon nucleating agent has the advantages of simple processes, short reaction period and high yield. In nylon resin extrusion injection molding, when the nylon nucleating agent of which a use amount is 0.2 to 0.5% by mass of that of nylon resin is added, good nucleating effects are obtained. In addition, the nylon nucleating agent can be combined with an auxiliary nucleating agent having nucleation effects. Through utilization of the nylon nucleating agent, nylon resin demolding performances are improved; an injection molding period is shortened; production efficiency is improved; product size stability is improved; a shrinkage rate is reduced; product mechanical properties are improved; and a heat resistance temperature is improved. Compared with the existing nylon nucleating agents, based on application effects, the nylon nucleating agent provided by the invention has a large competitive advantage and an industrial application prospect.

Description

technical field [0001] The invention relates to a nylon modification and processing technology, in particular to a nylon nucleating agent and its preparation method and application in nylon. Background technique [0002] Polyamide is commonly known as nylon (Nylon), and its English name is Polyamide (referred to as PA). Nylon is the most important engineering plastic, and its output ranks first among the five general-purpose engineering plastics. Among them, the main varieties of nylon are nylon 6 (PA6) and nylon 66 (PA66), and they obtain a wide variety of nylon products through extrusion and injection molding processes , such as reinforced nylon, high impact (toughened) nylon, conductive nylon, flame retardant nylon, nylon and other polymer blends and alloys, etc. These nylon injection molded parts have many characteristics such as high mechanical strength, heat resistance, low friction coefficient, self-lubrication, oil resistance, weather resistance, etc., and are widel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08K5/21C08L77/02C08L77/06
Inventor 朱玉堂欧阳春发
Owner SHANGHAI LUJIU RUBBER PLASTIC NEW MATERIAL
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