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Preparation method of antistatic highly-flame-retardant MC nylon composite material

A nylon composite material, high flame-retardant technology, applied in the field of polymer materials, can solve problems such as air pollution and personnel poisoning, achieve the effects of inhibiting combustion, reducing heat, and enhancing electrical conductivity

Inactive Publication Date: 2019-03-19
江苏利德尔新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing flame retardants are mainly halogen-containing flame retardants or phosphorus-based flame retardants. However, the cast nylon products added with these flame retardants will produce toxic gases when burned in a fire, which will easily cause personnel poisoning and atmospheric pollution. pollution

Method used

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  • Preparation method of antistatic highly-flame-retardant MC nylon composite material

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Embodiment 1-3

[0026] A preparation method of antistatic high flame-retardant MC nylon composite material, comprising the steps of:

[0027] (1) According to the parts by weight, heat 100 parts of caprolactam monomer in the reaction vessel to 120°C to melt the material, add sodium hydroxide for 0.6h of vacuum dehydration, and continue vacuum dehydration for 0.8h; remove the vacuum, and add in order Acetylene black, nonylphenol ethoxylate, silicon dioxide and expandable graphite, increase the temperature of the reaction solution to 145°C, stir and disperse for 0.6h with a twin-shaft double-blade low-speed dispersing mixer with a rotation speed of 100rpm, and then continue to dehydrate and vacuumize for 1h , vacuum dehydration (absolute) pressure is less than 5mmHg;

[0028] (2) After releasing the vacuum, add toluene diisocyanate to ultrasonically disperse for 15 minutes, cast the reaction solution into a mold preheated to 165°C, keep warm and spin the mold centrifugally for 30 minutes, and t...

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Abstract

The invention discloses a preparation method of an antistatic highly-flame-retardant MC nylon composite material. The preparation method comprises the following steps: (1) heating 100 parts by weightof caprolactam monomers into a reaction container to reach a temperature of 110-130 DEG C so as to melt the material, performing vacuum dehydration for 0.5-1 hour, adding a catalyst, and continuouslyperforming vacuum dehydration for 0.5-1 hour; releasing vacuum, sequentially adding different additives, raising the temperature of the reaction solution to 130-160 DEG C, mixing, stirring and dispersing for 0.5-1 hour, and continuously dehydrating and vacuumizing for 0.5-1 hour; and (2) adding a curing agent after releasing the vacuum, performing ultrasonic dispersion for 15 minutes, casting thereaction solution into a mold preheated to 160-170 DEG C, maintaining the temperature, and centrifugally rotating the mold for 30 minutes, and demolding. The cast nylon composite material prepared bythe method disclosed by the invention has excellent antistatic property and flame-retardant property, and has important popularization and application prospects in the fields of space flight and aviation, automobile industry, elevator industry, crane industry and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a preparation method of an antistatic and highly flame-retardant MC nylon composite material. Background technique [0002] Cast nylon exhibits high tensile and compressive strength and a low coefficient of friction. Cast nylon is lightweight, easy to process, and has high abrasion resistance. Therefore, cast nylon is suitable to replace metals and other plastics. Another characteristic of cast nylon is that it is non-conductive and prone to static buildup, so it cannot be used in environments where static buildup could be a problem. Also, cast nylon is flammable and therefore cannot be used in excessively hot environments. People usually improve the antistatic and flame retardant properties of cast nylon by adding conductive fillers, but to endow nylon with ideal antistatic and flame retardant properties, it needs to be filled with a large amount of fillers, which wil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08K3/04C08K3/36C08K5/06C08G69/14
CPCC08G69/14C08K3/04C08K3/36C08K5/06C08L2201/02C08L2201/04C08L77/02
Inventor 朱海霞沈国春邵自强胡国华张超
Owner 江苏利德尔新材料科技有限公司
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