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A ceramic fiber reinforced high-strength nylon plastic and its application in the electrical field

A ceramic fiber and nylon plastic technology, applied in the nylon field, can solve the problems of concentration of gravity, difficulty in uniform dispersion of inorganic fibers, and decreased mechanical properties, and achieve the effects of good insulation and heat resistance, good dispersibility, and superior mechanical properties.

Active Publication Date: 2022-03-29
东莞市立晶塑胶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no matter for glass fiber or ceramic fiber, its filling amount in nylon generally cannot exceed 30wt%. If the amount is too large, the problem that the inorganic fiber is difficult to uniformly disperse in the nylon matrix will become more serious, causing the phenomenon of gravitational concentration, which will lead to mechanical properties. Decline

Method used

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  • A ceramic fiber reinforced high-strength nylon plastic and its application in the electrical field
  • A ceramic fiber reinforced high-strength nylon plastic and its application in the electrical field
  • A ceramic fiber reinforced high-strength nylon plastic and its application in the electrical field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A high-strength nylon plastic reinforced with ceramic fibers, comprising the following raw materials in parts by weight:

[0027]

[0028]

[0029] The preparation method of described modified ceramic fiber comprises the steps:

[0030] (1) 10 parts by weight of PA66 are dissolved in the formic acid of 100 parts by weight to form a nylon solution;

[0031] (2) Add 50 parts by weight of silicon nitride fibers to the nylon solution, stir evenly to obtain a suspension;

[0032] (3) Spray drying the suspension to obtain the modified ceramic fiber.

[0033] Wherein, the melt index of the PA6 under the condition of 230° C. / 2.16 kg is 17 g / 10 min.

[0034] Wherein, the melt index of the PA66 under the condition of 275° C. / 5 kg is 40 g / 10 min.

[0035] Wherein, the silicon nitride fiber has a diameter of 100 nm and a length of 2 μm.

[0036] Wherein, the lubricant is talcum powder.

[0037] Wherein, the flame retardant is ammonium polyphosphate.

[0038] Wherein, th...

Embodiment 2

[0042] A high-strength nylon plastic reinforced with ceramic fibers, comprising the following raw materials in parts by weight:

[0043]

[0044]

[0045] The preparation method of described modified ceramic fiber comprises the steps:

[0046] (1) 10 parts by weight of PA66 are dissolved in the formic acid of 100 parts by weight to form a nylon solution;

[0047] (2) Add 55 parts by weight of silicon nitride fibers to the nylon solution, stir evenly to obtain a suspension;

[0048] (3) Spray drying the suspension to obtain the modified ceramic fiber.

[0049] Wherein, the melt index of the PA6 under the condition of 230° C. / 2.16 kg is 20 g / 10 min.

[0050] Wherein, the melt index of the PA66 under the condition of 275° C. / 5 kg is 60 g / 10 min.

[0051] Wherein, the silicon nitride fiber has a diameter of 200 nm and a length of 3 μm.

[0052] Wherein, the lubricant is polyethylene wax.

[0053] Wherein, the flame retardant is aluminum hydroxide.

[0054] Wherein, the...

Embodiment 3

[0058] A high-strength nylon plastic reinforced with ceramic fibers, comprising the following raw materials in parts by weight:

[0059]

[0060]

[0061] The preparation method of described modified ceramic fiber comprises the steps:

[0062] (1) 10 parts by weight of PA66 are dissolved in the formic acid of 100 parts by weight to form a nylon solution;

[0063] (2) Add 50 parts by weight of silicon nitride fibers to the nylon solution, stir evenly to obtain a suspension;

[0064] (3) Spray drying the suspension to obtain the modified ceramic fiber.

[0065] Wherein, the melt index of the PA6 under the condition of 230° C. / 2.16 kg is 18.5 g / 10 min.

[0066] Wherein, the melt index of the PA66 under the condition of 275° C. / 5 kg is 50 g / 10 min.

[0067] Wherein, the silicon nitride fiber has a diameter of 150 nm and a length of 2.5 μm.

[0068] Wherein, the lubricant is a mixture of talcum powder and calcium stearate in a weight ratio of 1:2.

[0069] Wherein, the fla...

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Abstract

The invention relates to the technical field of nylon, in particular to a high-strength nylon plastic reinforced by ceramic fibers and its application in the electrical field. The high-strength nylon plastic includes the following raw materials in parts by weight: 30 parts of PA6, 50-70 parts of modified ceramic fiber, Lubricant 1-2 parts, flame retardant 4-6 parts, antioxidant 0.2-0.4 parts. In the present invention, the silicon nitride fiber is evenly dispersed in the PA66 matrix through the solvent regeneration method to form a nylon / ceramic fiber composite powder, and then through melt blending with PA6, the nylon / ceramic fiber composite powder forms a sea-island structure in the PA6 matrix , and there is basically no phase contact between PA6 and silicon nitride fibers, so the dispersion is also good, so high-filling nylon materials can be produced with excellent mechanical properties.

Description

technical field [0001] The invention relates to the technical field of nylon, in particular to a ceramic fiber-reinforced high-strength nylon plastic and its application in the electrical field. Background technique [0002] Nylon has been widely used in electronics, electrical appliances, automobiles, machinery manufacturing, chemical, Food, daily necessities, medical and health and other fields. However, in some special fields, the performance of nylon cannot fully meet the requirements of practical applications. For example, nylon has strong water absorption in a humid environment at room temperature, and its tensile strength and hardness decrease sharply with the increase of water absorption, which will cause deformation and shrinkage of the material in the later stage, and even the glass transition temperature changes from The original 50°C was reduced to 0°C (see: "Radiation Physics and Chemistry 78 (2009) 199-205"). [0003] Filling modification with glass fiber is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08L77/06C08K9/04C08K7/10C08K3/34C08K3/32C08K5/134C08K5/526C08K3/22C08K13/06C08J5/06
CPCC08J5/06C08J2377/02C08J2477/06C08K2201/011C08K9/08C08K7/10C08K3/34C08K2003/323C08K5/1345C08K5/526C08K2003/2227C08K13/06
Inventor 高天平
Owner 东莞市立晶塑胶有限公司
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