CN102993395A

CN102993395A - Method for preparing resin for water-based insulating varnish

Info

Publication number: CN102993395A
Application number: CN201210486166XA
Authority: CN
Inventors: 唐家玉
Original assignee: ANHUI SGTECH COATING TECHNOLOGY Co Ltd
Current assignee: ANHUI SGTECH COATING TECHNOLOGY Co Ltd
Priority date: 2012-11-26
Filing date: 2012-11-26
Publication date: 2013-03-27

Abstract

The invention discloses a method for preparing a resin for a water-based insulating varnish, comprising the following steps of: weighing 25-30 kg of rosin and heating so that the rosin is melted into liquid, and then starting stirring; adding 4-6 kg of phenol at 120 DEG C, cooling for reducing the temperature to below 90 DEG C, adding 3-4 kg of formaldehyde and performing condensation reflux for 1-1.5 hours at 98-100 DEG C, stopping reflux and discharging moisture through distillation in stead, and keeping the temperature of the distillation head in the range of 96-105 DEG C at this moment; when the temperature of the distillation head is reduced to 80 DEG C, starting heating the system to the range of 145-150 DEG C; and adding 4-5 kg of trimethylolpropane and 0.3-0.5 kg of tris(2-hydroxyethyl) isocyanurate. The water-based insulating varnish provided by the invention is mainly composed of a metal corrosion inhibitor, a water-based cross-linking agent, a base material wetting agent and the like, and thereby has the advantages of high heat resistance, excellent insulation property, good adhesive force, protruding bonding capability, ultrahigh drying and curing speed, excellent waterproofness and solvent resistance and the like.

Description

A kind of manufacture method of the resin for insulative water paint

Technical field

The invention belongs to technical field of polymer materials, specifically a kind of manufacture method of the resin for insulative water paint.

Background technology

Insullac is the general insulating material of B-F level; be mainly used in flooding short-term at the electrical equipment and electrical coil of 250-300 ℃ of work; and be immersed in the electrical equipment and electrical coil of 180-200 ℃ of running; be applicable to impregnation or the application of transformer, motor, motor, generator, circuit card, wiring board, coil, resistance, armature, electric capacity, spindle, rotor, enameled wire, the effects such as protection against the tide, heat radiation, insulation, fixing, protection circuit plate are arranged.Also can be used as transistor protective layer, impregnated glass envelope curve and woven fiber glass.The quality problems such as that existing insullac exists is heat-resisting, disruptive strength is not good are badly in need of improving.

Summary of the invention

The manufacture method that the purpose of this invention is to provide a kind of resin for insulative water paint, excellent property.

Technical scheme of the present invention is as follows:

A kind of manufacture method of the resin for insulative water paint, it is characterized in that: may further comprise the steps: take by weighing and open stirring after rosin 25-30 kilogram heat fused becomes liquid, in 120 ℃ of lower phenol 4-6 kilograms that add, add formaldehyde 3-4 kilogram below the cooling down to 90 ℃, and at 98-100 ℃ of condensing reflux 1-1.5h, stop to reflux, change distillation into and discharge moisture, heat up in a steamer a temperature and remain on 96-105 ℃ this moment, system begins to heat up after heating up in a steamer a drop in temperature to 80 ℃, system temperature is to 145-150 ℃, add TriMethylolPropane(TMP) 4-5 kilogram and trihydroxyethyl isocyanuric ester 0.3-0.5 kilogram, when being increased to after 180 ℃ by 20 ℃ speed per hour, temperature is warming up to 240 ℃, at 240 ℃ of insulation 0.5～1h, then be cooled to 120 ℃, add tung oil acid anhydride 55-60 kilogram, and at 150-160 ℃ of insulation 1～1.5h, being cooled to the Diethylene Glycol of adding below 130 ℃ butyl ether 22-25 kilogram mixes, continue to be cooled to and add dimethylethanolamine or triethylene glycol solution adjusting pH value below 65 ℃, automatic heating to 80～85 ℃, after stirring, sampling and testing pH value, the pH value should be between 7.5～8.5, if the pH value is less than 7.5, can add an amount of dimethylethanolamine or triethylene glycol solution and regulate, make the water-soluble insulated coating resins.

Insulative water paint of the present invention mainly is made of metal inhibitor, water cross-linking agent, base material wetting agent etc., have higher thermotolerance and good insulativity, sticking power is good, and cementability is outstanding, the advantages such as drying and curing speed are express, and water tolerance and solvent resistance are good.This product uses water as dispersion agent, reaches the discharging of zero VOC, and is harmless, nontoxic, and safety is not fired not quick-friedly, is the green product of the friendly type of a kind of novel environmental.This lacquer is the general insulating material of B-F level; be mainly used in flooding short-term at the electrical equipment and electrical coil of 250-300 ℃ of work; and be immersed in the electrical equipment and electrical coil of 180-200 ℃ of running; be applicable to impregnation or the application of transformer, motor, motor, generator, circuit card, wiring board, coil, resistance, armature, electric capacity, spindle, rotor, enameled wire, the effects such as protection against the tide, heat radiation, insulation, fixing, protection circuit plate are arranged.Also can be used as transistor protective layer, impregnated glass envelope curve and woven fiber glass.

Embodiment

A kind of manufacture method of the resin for insulative water paint comprises and carries out following steps:

Take by weighing and open stirring after 27.2 kilograms of heat fused of rosin become liquid, stirring velocity is not less than 200 rev/mins.Add 5.2 kilograms of phenol in 120 ℃, add 3.72 kilograms in formaldehyde below the cooling down to 90 ℃, and at 98-100 ℃ of condensing reflux 1～1.5h, stop to reflux, change distillation into and discharge moisture, heat up in a steamer a temperature this moment should be about 100 ℃, system begins to heat up after heating up in a steamer a drop in temperature to 80 ℃, system temperature to 150 ℃, add 0.44 kilogram of 4.24 kilograms of TriMethylolPropane(TMP)s and trihydroxyethyl isocyanuric ester, when being increased to after 180 ℃ by 20 ℃ speed per hour, temperature is warming up to 240 ℃, at 240 ℃ of insulation 0.5～1h, then be cooled to 120 ℃, add 58.57 kilograms of tung oil acid anhydrides, and at 150-160 ℃ of insulation 1～1.5h, being cooled to 23.43 kilograms of the Diethylene Glycol of adding below 130 ℃ butyl ether mixes, continue to be cooled to and add dimethylethanolamine/triethylene glycol solution below 65 ℃, automatic heating to 80～85 ℃, after stirring, sampling and testing pH value, the pH value should be between 7.5～8.5, if the pH value is less than 7.5, can add 14 kilograms of solution of 14 kilograms/triethylene glycol of an amount of dimethylethanolamine and regulate, namely make the water-soluble insulated coating resins.

The insulative water paint resin of this moment can be miscible with arbitrary proportion with water, and therefore can directly add entry in still forms rare resin, but also the later stage adds water.

Technical indicator:

1 appearance white emulsion liquid, machinery-free impurity.2 viscosity (being coated with-4) S 16-25 s, 3 solid part % 30 ± 1% 4 (120 ± 10 ° of C) h time of drying is not more than 60min 5 thermotolerances (200 ± 2 ° of C) h and is not less than 12 6 disruptive strength KV/mm and is not less than normality (25 ± 1 ° of C) 68 hot (200 ± 2 ° of C) 50 and makes moist that (25 ± 1 ° of C relative humidity 95 ± 3%24h) 52 7 volume resistivity Ω cm3 are not less than normality (25 ± 1 ° of C) 1*1200 hot (200 ± 2 ° of C) 1*1150 (25 ± 1 ° of C relative humidity 95 ± 3%24h) the 1*1150 construction references: 1 of making moist, construct by electrical equipment and electrical impregnating varnish technique, need not to wait for surface drying, directly enter baking oven; 2, according to requirements, can add and be no more than the dilution of 30% deionized water; 3, storing temperature 110-150 degree, time 60-120 minute.

Claims

1. manufacture method that is used for the resin of insulative water paint, it is characterized in that: may further comprise the steps: take by weighing and open stirring after rosin 25-30 kilogram heat fused becomes liquid, in 120 ℃ of lower phenol 4-6 kilograms that add, add formaldehyde 3-4 kilogram below the cooling down to 90 ℃, and at 98-100 ℃ of condensing reflux 1-1.5h, stop to reflux, change distillation into and discharge moisture, heat up in a steamer a temperature and remain on 96-105 ℃ this moment, system begins to heat up after heating up in a steamer a drop in temperature to 80 ℃, system temperature is to 145-150 ℃, add TriMethylolPropane(TMP) 4-5 kilogram and trihydroxyethyl isocyanuric ester 0.3-0.5 kilogram, when being increased to after 180 ℃ by 20 ℃ speed per hour, temperature is warming up to 240 ℃, at 240 ℃ of insulation 0.5～1h, then be cooled to 120 ℃, add tung oil acid anhydride 55-60 kilogram, and at 150-160 ℃ of insulation 1～1.5h, being cooled to the Diethylene Glycol of adding below 130 ℃ butyl ether 22-25 kilogram mixes, continue to be cooled to and add dimethylethanolamine or triethylene glycol solution adjusting pH value below 65 ℃, automatic heating to 80～85 ℃, after stirring, sampling and testing pH value, the pH value should be between 7.5～8.5, if the pH value is less than 7.5, can add an amount of dimethylethanolamine or triethylene glycol solution and regulate, make the water-soluble insulated coating resins.