CN106589931A - High-toughness flame-retardant nylon composite for electric power fitting and preparation method of nylon composite - Google Patents

Abstract

The invention discloses a high-toughness flame-retardant nylon composite for an electric power fitting. The high-toughness flame-retardant nylon composite is prepared from raw materials in parts by weight as follows: 76-79 parts of nylon 66, 21-24 parts of petroleum resin, 27-29 parts of carbon fibers, 8.7-8.9 parts of melamine cyanurate, 26-28 parts of zirconia, 1.4-1.6 parts of nano-silver, 3-5 parts of hexahydrophthalic anhydride, 3.1-3.5 parts of vinyl silicone oil, 7-10 parts of methyltrimethoxysilane, 2-4 parts of wood pulp and 0.3-0.5 parts of zinc borate. Melamine cyanurate is taken as a flame retardant, zirconia is taken as thermal conducting filler after silane modification, and the electric power fitting prepared from the carbon fibers as a reinforcing material compounded with other effective components is light in weight, high in toughness and long in service life.

Description

A kind of high tenacity electric armour clamp fire-retardant nylon composite and preparation method thereof

Technical field

The present invention relates to technical field of composite materials, more particularly to a kind of high tenacity electric armour clamp fire-retardant nylon composite wood Material and preparation method thereof.

Background technology

Electric armour clamp be connection and combinational electric system in all kinds of devices, play transmission mechanical load, electrical load and The metal-ware of certain protective action, used as part indispensable on transmission line of electricity, its electric energy loss is always power department The problem of concern.In addition to improving from electric armour clamp casting technique, the selection to its material is particularly important, and material is prepared at present Mainly based on nonmagnetic aluminium alloy, although compared with the ferrimagnet for using in the past, electrical network energy-saving and emission-reduction are played necessarily Effect, but used as metallic conductor, eddy-current loss is still present, and energy loss is still unavoidable from, and Al-alloy products must Must obtain through the high energy consumptions such as ore dressing, exploitation, electrolysis, melting, high pollution operation, belong to national developmental limitation industry, it is impossible to full The economic needs of sufficient transmission line of electricity.Replace metal material with insulant, so that it may reduce eddy-current loss, reach more preferable energy-conservation effect Really.With the fast development of brand-new material science, the composite with insulating properties is applied to more and more power industry In, as the making material of electric armour clamp, it is up to decrease or even eliminate the purpose of eddy-current loss.

It is known that fibre reinforced composites have the performance such as lightweight, high-strength, anti-corrosion, insulation, environmental protection, in power industry Be widely used in transmission and distribution networkses, thus in order to solve the problems, such as electric line in steel and aluminum alloy hardware high energy consumption, Reduce line loss, document《The development and application of modified composite material conductor spacer and suspension clamp》Tens of kinds of engineering plastics are entered Go and selected and study, it is determined that using PA66 nylon as the base material of composite.In the substrate add glass fibre, toughener, Resistance to ozone and corrosion-resistant etc. material modified, and by repetition test test and formulation optimization, successfully develop a kind of modified compound Material, and the design of conductor spacer and suspension clamp, trial-production and experimental study based on modified composite material have been carried out, as a result show it Performance meets national standard and power industry standard requirement, and the suspension clamp based on composite has been applied to 35 kV and 220 In kV overhead transmission lines, operation conditions is good.

Belong to combustible material yet with nylon material, electric armour clamp is used for for a long time open air, especially during the broiling summer Hold fire hazardous with dry winter, and the improvement of the performance such as fire-retardant to material in document, cold-resistant, ageing-resistant does not add elaboration, Thus the electric armour clamp with fire resistance for developing a kind of multifunction efficient energy-saving have with modified composite nylon material it is good Good application prospect.

The content of the invention

The object of the invention is exactly to make up the defect of prior art, there is provided a kind of high tenacity electric armour clamp fire-retardant nylon Composite and preparation method thereof.

The present invention is achieved by the following technical solutions：

A kind of high tenacity electric armour clamp fire-retardant nylon composite, is prepared by the raw materials in：Nylon66 fiber 76-79, Petropols 21-24, carbon fiber 27-29, melamine cyanurate 8.7-8.9, zirconium oxide 26-28, nanometer silver 1.4-1.6, Hexahydrophthalic anhydride 3-5, vinyl silicone oil 3.1-3.5, MTMS 7-10, wood pulp 2-4, Firebrake ZB 0.3- 0.5。

A kind of described high tenacity electric armour clamp manufacture method of fire-retardant nylon composite, comprises the following steps：

（1）Wood pulp is added stirring and evenly mixing heated and boiled in the water of 10-12 times of quality, keeping temperature add nanometer silver, vinyl Silicone oil continues to stir 10-20 minutes, is cooled to 45-55 DEG C, adds melamine cyanurate ultrasonic disperse 20-30 minutes, spray Mist it is dry modified melamine cyanurate；

（2）By zirconium oxide in 815-915 DEG C of calcination processing 30-40 minute, 120-130 DEG C of addition hexahydrophthalic acid is cooled to Acid anhydride grinds 20-30 minutes, is cooled to 75-80 DEG C of addition MTMS ultrasonic disperse 10-15 minute, and room temperature is dried Modified zirconia；

（3）Carbon fiber is placed in the salpeter solution that mass concentration is 25%-40%, is soaked 10-20 minutes under room temperature condition, then With in the sodium hydroxide solution of mass concentration 5%-20% and residual acid solution, final rinse water to neutrality is dried must be roughened place Reason carbon fiber；

（4）By nylon66 fiber, Petropols, step（1）、（2）Material and other residual componentss mix homogeneously in mixer, on Jing Trip spout, sends into double screw extruder, while by step（3）Middle roughening treatment carbon fiber Jing fed downstream mouths, send into double spiral shells Bar extruder melting extrusion, pelletize, discharging.

It is an advantage of the invention that：The present invention with melamine cyanurate as fire retardant, addition nanometer silver be modified after Its crystal can be made to be generally uniformly dispersed in nylon matrix, in burning by itself endothermic decomposition, produce non-combustible gas, it is real Existing gas phase is intercepted, and so as to play fire retardation, and leaves nanoporous on composite self-extinguishment face；The present invention is by zirconium oxide Carry out it is silane-modified after be added in raw material as heat filling, and nylon matrix wellability it is good be uniformly dispersed, improve material The thermal diffusivity and heat resistance of material；As reinforcing material, again other effective ingredient of compatibility are mutually combined obtained electricity to addition carbon fiber Power gold utensil light weight, toughness are high, long perfomance life.

Specific embodiment

A kind of high tenacity electric armour clamp fire-retardant nylon composite, is prepared by the raw materials in：Nylon66 fiber 76th, Petropols 21, carbon fiber 27, melamine cyanurate 8.7, zirconium oxide 26, nanometer silver 1.4, hexahydrophthalic acid Acid anhydride 3, vinyl silicone oil 3.1, MTMS 7, wood pulp 2, Firebrake ZB 0.3.

A kind of described high tenacity electric armour clamp manufacture method of fire-retardant nylon composite, comprises the following steps：

（1）Wood pulp is added stirring and evenly mixing heated and boiled in the water of 10-12 times of quality, keeping temperature add nanometer silver, vinyl Silicone oil continues to stir 10-20 minutes, is cooled to 45-55 DEG C, adds melamine cyanurate ultrasonic disperse 20-30 minutes, spray Mist it is dry modified melamine cyanurate；

（2）By zirconium oxide in 815-915 DEG C of calcination processing 30-40 minute, 120-130 DEG C of addition hexahydrophthalic acid is cooled to Acid anhydride grinds 20-30 minutes, is cooled to 75-80 DEG C of addition MTMS ultrasonic disperse 10-15 minute, and room temperature is dried Modified zirconia；

（3）Carbon fiber is placed in the salpeter solution that mass concentration is 25%-40%, is soaked 10-20 minutes under room temperature condition, then With in the sodium hydroxide solution of mass concentration 5%-20% and residual acid solution, final rinse water to neutrality is dried must be roughened place Reason carbon fiber；

（4）By nylon66 fiber, Petropols, step（1）、（2）Material and other residual componentss mix homogeneously in mixer, on Jing Trip spout, sends into double screw extruder, while by step（3）Middle roughening treatment carbon fiber Jing fed downstream mouths, send into double spiral shells Bar extruder melting extrusion, pelletize, discharging.

It is 213MPa using electric armour clamp fire-retardant nylon composite material tensile strength obtained in the present invention, elongation percentage is 5.13%。

Claims (2)

1. a kind of high tenacity electric armour clamp fire-retardant nylon composite, it is characterised in that by the raw material system of following weight portion Into：Nylon66 fiber 76-79, Petropols 21-24, carbon fiber 27-29, melamine cyanurate 8.7-8.9, zirconium oxide 26- 28th, nanometer silver 1.4-1.6, hexahydrophthalic anhydride 3-5, vinyl silicone oil 3.1-3.5, MTMS 7-10, Wood pulp 2-4, Firebrake ZB 0.3-0.5.

2. a kind of high tenacity electric armour clamp according to claim 1 manufacture method of fire-retardant nylon composite, it is special Levy is to comprise the following steps：

（1）Wood pulp is added stirring and evenly mixing heated and boiled in the water of 10-12 times of quality, keeping temperature add nanometer silver, vinyl Silicone oil continues to stir 10-20 minutes, is cooled to 45-55 DEG C, adds melamine cyanurate ultrasonic disperse 20-30 minutes, spray Mist it is dry modified melamine cyanurate；

（2）By zirconium oxide in 815-915 DEG C of calcination processing 30-40 minute, 120-130 DEG C of addition hexahydrophthalic acid is cooled to Acid anhydride grinds 20-30 minutes, is cooled to 75-80 DEG C of addition MTMS ultrasonic disperse 10-15 minute, and room temperature is dried Modified zirconia；

（3）Carbon fiber is placed in the salpeter solution that mass concentration is 25%-40%, is soaked 10-20 minutes under room temperature condition, then With in the sodium hydroxide solution of mass concentration 5%-20% and residual acid solution, final rinse water to neutrality is dried must be roughened place Reason carbon fiber；

（4）By nylon66 fiber, Petropols, step（1）、（2）Material and other residual componentss mix homogeneously in mixer, on Jing Trip spout, sends into double screw extruder, while by step（3）Middle roughening treatment carbon fiber Jing fed downstream mouths, send into double spiral shells Bar extruder melting extrusion, pelletize, discharging.