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Method for preparing high toughness black MC nylon

A high-toughness, black technology, applied in the field of preparation of high-toughness black MC nylon, can solve the problems of high carbon black activity, high brittleness, poor toughness, etc., and achieve the effect of good toughness, good stability and low brittleness of products.

Inactive Publication Date: 2009-03-11
湖南天一制造技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carbon black has high activity and consumes co-catalyst
Moreover, the product has poor toughness, high brittleness, and cannot meet high-quality requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Preparation of the mold

[0024] a. Clean the mold;

[0025] b. Apply silicone oil release agent on the mold;

[0026] c. Preheat the mold to 155°C;

[0027] (2), configuration of raw materials

[0028] a. Weigh the nylon monomer by weight and place it in the reactor, heat it to 115°C, and vacuum > 99.9kpa until it is completely melted;

[0029] b. Add 2.2 grams of basic catalyst NaOH per kilogram of nylon monomer, heat to 135°C, vacuum > 99.9kpa and boil for 25 minutes;

[0030] c, then add 8 grams of resin ink, add 6 grams of promoter PAPI, 5.4 grams of epoxy resin, mix well;

[0031] (3), pouring and curing

[0032] a. Immediately pour the above-mentioned active raw materials into the mold, heat to 165°C, keep warm for 28 minutes, and then gradually cool down;

[0033] b. Take out the product from the mold and place it in engine oil, keep it warm at 155°C for 2 hours, and cool it together with the engine oil;

[0034] c. Put the product into water and boil...

Embodiment 2

[0036] (1) Preparation of the mold

[0037] a. Clean the mold;

[0038] b. Apply silicone oil release agent on the mold;

[0039] c. Preheat the mold to 165°C;

[0040] (2), configuration of raw materials

[0041] a. Weigh the nylon monomer by weight and place it in the reactor, heat it to 125°C, and vacuum > 99.9kpa until it is completely melted;

[0042] b. Add 2.4 grams of basic catalyst NaOH per kilogram of nylon monomer, heat to 145°C, vacuum > 99.9kpa and boil for 30 minutes;

[0043] c, then add 8 grams of resin ink, add 6 grams of promoter PAPI, 5.4 grams of epoxy resin, mix well;

[0044] (3), pouring and curing

[0045] a. Immediately pour the above-mentioned active raw materials into the mold, heat to 155°C, keep warm for 32 minutes, and then gradually cool;

[0046] b. Take out the product from the mold and place it in engine oil, keep it warm at 150°C for 2 hours, and cool it together with the engine oil;

[0047] c. Put the product into water and boil for ...

Embodiment 3

[0049] (1) Preparation of the mold

[0050] a. Clean the mold;

[0051] b. Apply silicone oil release agent on the mold;

[0052] c. Preheat the mold to 160°C;

[0053] (2), configuration of raw materials

[0054] a. Weigh the nylon monomer by weight and place it in the reactor, heat it to 120°C, and vacuum > 99.9kpa until it is completely melted;

[0055] b. Add 2.3 grams of basic catalyst NaOH per kilogram of nylon monomer, heat to 140°C, vacuum > 99.9kpa and boil for 20 minutes;

[0056] c, then add 8 grams of resin ink, add 6 grams of promoter PAPI, 5.4 grams of epoxy resin, mix well;

[0057] (3), pouring and curing

[0058] a. Immediately pour the above-mentioned active raw materials into the mold, heat to 160°C, keep warm for 0.5 hours, and gradually cool down;

[0059] b. Take out the product from the mold and place it in engine oil, keep it warm at 160°C for 2 hours, and cool it together with the engine oil;

[0060] c. Put the product into water and boil for 2...

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PUM

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Abstract

The invention discloses a method for preparing high-tenacity black MC nylon. The method comprises the following steps: cleaning a mould and painting a mould release agent on the mould, and preheating the mould to the temperature of between 155 and 165 DEG C; weighing nylon monomers by weight and placing the nylon monomers into a reactor, heating up the nylon monomers to the temperature of between 115 and 125 DEG C, and vacuumizing the pressure to more than 99.9kPa until all the nylon monomers are melted; adding 2.2 to 2.4 grams of basic catalyst into each kilogram of the nylon monomers, heating up the mixture to the temperature of between 135 and 145 DEG C, and vacuumizing the pressure to more than 99.9kPa for boiling 20 to 30 minutes; then adding 8 grams of resinous ink, PAPI6 grams of cocatalyst and 5.4 grams of epoxy resin to mix evenly; pouring the active raw materials into the mould immediately, heating up the raw materials to the temperature of between 155 and 165 DEG C, and cooling gradually after keeping the temperature for 28 to 32 minutes; b, taking out products from the mould and placing the products in machine oil, keeping the temperature between 150 and 160 DEG C for two hours, and then cooling the products together with the machine oil; and c, putting the products into water to boil for 24 hours, and then cooling the products together with the water. The method is the method for preparing the high-tenacity black MC nylon which has good toughness, small brittleness, high quality and good stability.

Description

technical field [0001] The invention relates to a preparation method of high-toughness black MC nylon. Background technique [0002] At present, for the coloring of black MC nylon products, domestic enterprises generally adopt the method of adding carbon black for coloring. Carbon black is highly active and consumes co-catalysts. Moreover, the products have poor toughness and high brittleness, which cannot meet the high-quality requirements. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for preparing a product with good toughness, low brittleness, high quality, good stability and high toughness black MC nylon. [0004] In order to solve the problems of the technologies described above, the preparation method of the high tenacity black MC nylon provided by the invention, its steps are: [0005] (1) Preparation of the mold [0006] a. Clean the mold; [0007] b. Brush the release agent on the mold; ...

Claims

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Application Information

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IPC IPC(8): C08G69/24C08G69/18C08L77/02C08L63/00
Inventor 肖谦学彭义光
Owner 湖南天一制造技术有限公司
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