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Black MC nylon provided with black resin oil ink and preparation method thereof

A technology of black resin and nylon, which is applied in the field of black MC nylon, can solve the problems of unsatisfactory color, limited use field, high activity of carbon black, etc., and achieve the effect of improved bending strength, good operability, and simple and easy process steps

Inactive Publication Date: 2010-06-09
孙强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high activity of carbon black, it is easy to absorb moisture, resulting in uneven dispersion in the product, and sometimes moisture is brought into the reactor due to water absorption, and in severe cases, polymerization is inhibited or even cannot be polymerized.
The color cannot reach the ideal black, and the products made have poor toughness and high brittleness, and the field of use is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Preheating the mold

[0047] First, clean the mold thoroughly, brush the release agent on the inner wall of the mold, and heat it in an oven at 180°C for 15 minutes;

[0048] (2) Preparation of liquid black MC nylon active body

[0049] 1) Weigh 10kg of nylon monomer and put it into the reaction kettle to start heating. When heated to 120°C, start vacuuming to 1.32Kpa until the nylon monomer is completely melted;

[0050] 2) Maintain a vacuum of 1.32Kpa and continue heating to 140°C, adding 15g of sodium hydroxide and 20g of black resin ink in proportion;

[0051] 5) Maintain a vacuum of 1.32Kpa, heat the reactor to 150°C, and keep it warm for 10 minutes;

[0052] 6) Keep the vacuum constant, lower the temperature of the reaction kettle to 138°C, add 70g of catalyst TDI into the kettle, and stir well to obtain a liquid black MC nylon active body;

[0053] (3), casting and polymerization

[0054] 1) Cast the liquid MC nylon active body prepared in step (2) into t...

Embodiment 3

[0065] (1) Preheating the mold

[0066] First, clean the mold thoroughly, brush the release agent on the inner wall of the mold, and heat it in an oven at 180°C for 10 minutes;

[0067] (2) Preparation of liquid black MC nylon active body

[0068] 1) Weigh 10kg of nylon monomer and put it into the reaction kettle to start heating. When heating to 120°C, start vacuuming to 1.33Kpa until the nylon monomer is completely melted;

[0069] 2) Maintain a vacuum of 1.33Kpa and continue heating to 140°C, adding 20g of sodium hydroxide and 35g of black resin ink in proportion;

[0070] 3) Maintain a vacuum of 1.33Kpa, heat the reactor to 150°C, and keep it warm for 10 minutes;

[0071] 4) Keep the vacuum constant, lower the temperature of the reaction kettle to 138°C, add 80g of catalyst TDI into the kettle, and stir well to obtain a liquid black MC nylon active body;

[0072] (3), pouring and aggregation

[0073] 1) Cast the liquid black MC nylon active body prepared in step (2) into...

Embodiment 4

[0078] The black MC nylon that embodiment 3 is produced has carried out the experiment of tensile strength, elongation, flexural strength, notched impact strength and compressive strength according to national standard, and what the matched group adopts is the MC nylon of conventional carbon black coloring, and experimental data is shown in table 2:

[0079] Table 2: Performance test data of the product of embodiment 3:

[0080] experimental project

[0081] experimental project

[0082] From Table 2, we can see that the elongation, bending strength and notched impact strength of black MC nylon added with black resin ink are greatly improved compared with conventional MC nylon added with carbon black, especially the elongation and notched impact strength. It is nearly 1 times higher than conventional MC nylon with carbon black added.

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PUM

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Abstract

The invention relates to black MC nylon, in particular to high-tenacity black MC nylon provided with black resin oil ink and a preparation method thereof. The black MC nylon of the invention comprises the following components in part by weight: 1,000 parts of nylon monomer, 1.5 to 2.5 parts of basic catalyst, 2 to 5 parts of black resin oil ink and 7 to 9 parts of either toluene di-isocyanate or polyphenyl methane polyisocyanate. Compared with the black MC nylon produced in a way of coloring by using carbon black, the black MC nylon of the invention has more than two times higher impact ductility, 10 to 15 percent higher tensile strength, compression strength and bending strength, and more than two times higher elongation percentage. Therefore, the preparation method successfully solves the difficult problems of bad tenacity and high brittleness in a traditional black MC nylon product.

Description

technical field [0001] The invention relates to a black MC nylon, in particular to a black MC nylon added with black resin ink and a preparation method thereof. Background technique [0002] MC nylon is also called monomer cast nylon, the structural formula is -{NH-(CH2)m}n-, the value of m in the formula is 6-10, generally 6, so it is usually called MC nylon 6, and the molecular weight of MC nylon 6 is higher than that of ordinary Nylon 6 is about twice as high, reaching 35,000 to 70,000. The physical and mechanical properties are better than ordinary nylon, with better strength, rigidity, toughness, wear resistance, and chemical stability; low water absorption and good dimensional stability; Quenching, continuous heat resistance up to 100 ℃. The mechanical properties are greatly affected by temperature, and as the temperature increases, the mechanical properties decrease significantly. Products can be machined, welded, bonded. It can be rotated, casted and molded, espec...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08G69/24C08G69/18
Inventor 孙强
Owner 孙强