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A kind of preparation method of nylon resin

A technology of nylon resin and diacid, which is applied in the field of nylon materials, and can solve problems such as frequent fluctuations in product supply, difficulties in timely supply of resins for nylon powder, and high prices

Active Publication Date: 2021-07-06
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in recent years, because the production technology of adiponitrile, the raw material of hexamethylenediamine, has only been mastered by a few foreign companies, and due to uncontrollable factors, the price has remained high for a long time, and the product supply fluctuates frequently. The supply has brought certain difficulties, resulting in an unfavorable situation where prices are not available

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A preparation method of nylon resin, comprising the steps of:

[0028] The first step: take by weighing 78 kilograms of pentamethylenediamine, 162 kilograms of sebacic acid, 60 kilograms of caprolactam, 4.5 kilograms of antioxidants, 1.5 kilograms of brighteners, 1 kilogram of amino silicone oil, and 600 grams of benzoic acid according to the ratio of parts by mass. Said antioxidant is compounded by 500 grams of phosphorous acid, 2 kilograms of antioxidant 1010 and 2 kilograms of antioxidant 168, and said brightener is composed of 500 grams of calcium stearate, 500 grams of acrylate leveling agent and Compounded with 500 grams of benzoin;

[0029] Step 2: Mix pentamethylenediamine, sebacic acid and caprolactam evenly to obtain a mixture. The mixing speed is 1000-1500r / min, and the mixing time is 3-5min. Add antioxidant, brightener, amino silicone oil and benzoic acid;

[0030] The third step: Mix the mixture, antioxidant, brightener, amino silicone oil and benzoic acid...

Embodiment 2

[0041] A preparation method of nylon resin, comprising the steps of:

[0042] Step 1: Weigh 90 kg of pentamethylenediamine, 195 kg of dodecanoic acid, 15 kg of caprolactam, 3.5 kg of antioxidant, 2 kg of brightener, 0.5 kg of amino silicone oil, and 800 g of benzoic acid according to the ratio of parts by mass , the antioxidant is compounded by 500 grams of phosphorous acid, 2 kilograms of antioxidant 1010 and 1 kilogram of antioxidant 168, and the brightener is composed of 500 grams of calcium stearate and 1000 grams of acrylate leveling agent. gram and 500 grams of benzoin compound;

[0043] Step 2: Mix pentamethylenediamine, dodecanedioic acid and caprolactam evenly to obtain a mixture. The mixing speed is 1000-1500r / min, and the mixing time is 3-5min. Add antioxidant, brightener, amino silicone oil and benzene formic acid;

[0044] The third step: Mix the mixture, antioxidant, brightener, amino silicone oil and benzoic acid evenly, the mixing speed is 1500-2000r / min, and...

Embodiment 3

[0055] A preparation method of nylon resin, comprising the steps of:

[0056]The first step: take by weight 78 kg of pentamethylenediamine, 140 kg of sebacic acid, 22 kg of dodecanoic acid, 60 kg of caprolactam, 3 kg of antioxidant, 1.5 kg of brightener, and 1.5 kg of amino silicone oil kg, 500 grams of benzoic acid, the antioxidant is compounded by 500 grams of phosphorous acid, 2 kilograms of antioxidant 1010 and 0.5 kilogram of antioxidant 168, and the brightener is made of 500 grams of calcium stearate, acrylic acid It is made by compounding 500 grams of ester leveling agent and 500 grams of benzoin;

[0057] Step 2: Mix pentamethylenediamine, sebacic acid and caprolactam evenly to obtain a mixture. The mixing speed is 1000-1500r / min, and the mixing time is 3-5min. Add antioxidant, brightener, amino silicone oil and benzoic acid;

[0058] The third step: Mix the mixture, antioxidant, brightener, amino silicone oil and benzoic acid evenly, the mixing speed is 1500-2000r / mi...

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Abstract

The invention relates to a preparation method of nylon resin. The nylon resin is prepared by mixing pentamethylenediamine, sebacic acid, dodecanedibasic acid and caprolactam uniformly according to different proportions, and adding additives for polymerization reaction; The nylon powder produced by the product has a moderate melting point and is easy to construct. At the same time, in addition to the usual characteristics of conventional nylon powder, it also has fast crystallization speed, high coating gloss, low shrinkage, good coating toughness, and high transparency. advantage.

Description

technical field [0001] The invention belongs to the technical field of nylon materials, in particular to a preparation method of nylon resin. Background technique [0002] The existing resins for preparing nylon powder are mainly prepared from nylon 11, nylon 12, nylon 610 modified resin, nylon 612 modified resin or nylon 1010 or nylon 1012 modified resin. Nylon 11 and nylon 12 lack raw materials due to foreign technology monopoly , can only be prepared by nylon 610 modified resin, nylon 612 modified resin or nylon 1010 or nylon 1012 modified resin, while the preparation of domestic nylon resin is generally modified by hexamethylenediamine to reduce the melting point of nylon resin, Meet the requirements of nylon powder applications. However, in recent years, because the production technology of adiponitrile, the raw material of hexamethylenediamine, has only been mastered by a few foreign companies, and due to uncontrollable factors, the price has remained high for a long ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G69/36
CPCC08G69/36
Inventor 韩冰黄玉安杨少锋王新迪章峻莫宏陈汝建曹潇李书航曹沈炀李恒韩东苏
Owner NANJING INST OF TECH