CN103387726A - Top-cover sealing ring for filter cleaner - Google Patents

Abstract

The invention discloses a top-cover sealing ring for a filter cleaner. The sealing ring consists of the raw materials in parts by weight: 85-90 parts of fluorubber 246, 10-15 parts of SG-3 type PVC resin, 10-14 parts of blanc fixe, 5-6 parts of mica powder, 4-6 parts of barium stearate, 3-4 parts of ethyl acrylate, 1-2 parts of dibatyl phthalate, 1-2 parts of p-toluenesulfonamide, 1-2 parts of nickel powder, 1-2 parts of alumina, 1-2 parts of benzotriazole, 0.6-1 part of dibasic lead phosphite, 1-2 parts of anilinomethyltrimethoxysilane, 1-2 parts of tert-butyl peroxyacetate, 10-16 parts of a strengthening agent and 0.8-1 part of sulfur S-80. The sealing ring of the invention has a simple preparation method and a reasonable formula. The sealing ring has excellent mechanical properties, fatigue resistance, aging resistance and oil resistance. By adding the strengthening agent, the binding force of the various raw-material components is enhanced, so that the sealing ring is substantially improved in hardness and stress at definite elongation and is adaptable in various work environments of the filter cleaner, and the regular work of the filter cleaner is guaranteed.

Description

A kind of purifier upper cover sealing-ring

Technical field

The present invention relates generally to a kind of sealing-ring, relates in particular to a kind of purifier upper cover sealing-ring.

Background technology

Viton has height Chemical stability, be present best a kind of of medium-resistance in all elastomericss.26 type viton are anti- Petroleum baseOils, di-esters oil, silicon ethers oil, silicic acid class oil, inorganic acid resistance, the organic and inorganic solvent of anti-majority, medicine etc., only not anti-low molecular ketone, ether, ester, not anti-amine, ammonia, hydrofluoric acid, chlorsulfonic acid, phosphoric acid class Hydraulic efficiency oil.23 types Fluorine glueDielectric behavior similar to 26 types, and unique distinction is arranged more, the mineral acid of its powerful oxidation corrosion resistance is as being fuming Nitric acid, vitriol oil Performance Ratio 26 types are good, at room temperature in 98% HNO3, its volumetric expansion of dipping 27 days is only 13% ~ 15%.

The resistance to elevated temperatures of viton and Silicon rubberThe same, can be described as in present elastomerics best.But 26-41 fluorine glue life-time service under 250 ℃, 300 ℃ of lower short-terms are used; 246 fluorine glue are heat-resisting not worse than 26-41.After the physical property of 26-41 after 300 ℃ * 100 hours air thermal ageings and hot air aging in 300 ℃ * 100 hours, the performance of 246 types is suitable, and its tensile yield can remain on 100% left and right, hardness 90 ~ 95 degree.246 types keep favorable elasticity 350 ℃ of hot air agings after 16 hours, 400 ℃ of hot air agings, keep favorable elasticity after 110 minutes, after 400 ℃ of hot air agings 110 minutes, contain spraying Carbon black, thermals or carbon fiber the sizing material elongation rise approximately 1/2 ~ 1/3, strength degradation 1/2 left and right, still keep good elasticity.23-11 type fluorine glue can be at 200 ℃ of lower life-time service, and 250 ℃ of lower short-terms are used.

Viton has fabulous anti-weather-aging property, and is anti- OzonePerformance.According to reports, performance was still satisfactory afterwards in 10 years at natural storage for the VitonA of DuPont exploitation, Ozone concnBe through not obviously be full of cracks of effect in 45 days in 0.01% air.The Weather-resistant of 23 type viton, ozone resistance are also fabulous.

Viton has good physics Mechanical property.The general brute force that coordinates of 26 type viton is between 10 ~ 20MPa, and tensile yield is between 150 ~ 350%, and tearing toughness is between 3 ~ 4KN/m.23 type viton brute forces are between 15.0 ~ 25MPa, and elongation is 200% ~ 600%, and tearing toughness is between 2 ~ 7MPa.Usually, viton compression set at high temperature is large, if but with the same terms relatively, as the compression set of the same equal time under 150 ℃, fourth and Chloroprene rubberAll large than 26 type fluorine glue, the compression set of 26 type viton under 200 ℃ * 24 hours is equivalent to fourth rubber the compression set of 150 ℃ * 24 hours.

Summary of the invention

The object of the invention just is to provide a kind of purifier upper cover sealing-ring.

The present invention is achieved by the following technical solutions:

A kind of purifier upper cover sealing-ring, it is comprised of the raw material of following weight parts:

Fluororubber 246 85-90, SG-3 type polyvinyl chloride resin 10-15, ground barium sulfate 10-14, mica powder 5-6, barium stearate 4-6, ethyl propenoate 3-4, phthalic acid dibutyl ester 1-2, para toluene sulfonamide 1-2, nickel powder 1-2, aluminum oxide 1-2, phenylpropyl alcohol triazole 1-2, dibasic lead phosphite 0.6-1, anilinomethyl triethoxysilane 1-2, peroxidation tert-butyl acetate 1-2, strengthening agent 10-16, Sulfur S-80 0.8-1;

Described strengthening agent is comprised of the raw material of following weight parts:

Polypropylene (T30S) powder 90-100, hexagonal boron nitride 3-4, alum powder 2-3, ethylene group bis-stearamides 1-2, turps 0.8-1, Γ-aminopropyl triethoxysilane 1-2, whiteruss 3-4;

Above-mentioned ethylene group bis-stearamides is heated to 130-140 ℃, add Γ-aminopropyl triethoxysilane, hexagonal boron nitride, insulated and stirred reaction 10-20 minute, will add after turps, alum powder, polypropylene (T30S) powder mixing and stirring, be cooled to normal temperature, 1500-1600 rev/min is disperseed 6-8 minute, and the dropping liquid paraffin body dropwises rear 90-100 ℃ of insulation 1-2 hour, cooling rear ball milling, oven dry, granulation, particle diameter is 0.1-0.2 μ m.

A kind of purifier preparation method of upper cover sealing-ring comprises the following steps:

The aforesaid propylene acetoacetic ester is mixed with mica powder, stir post-heating to 100-106 ℃, add ethyl propenoate, barium stearate, 200-300 rev/min of dispersed with stirring 10-15 minute, add anilinomethyl triethoxysilane, SG-3 type polyvinyl chloride resin, fully stir, add each raw material of residue except Sulfur S-80, dibasic lead phosphite, mixing, compression moulding; Rubber mass after moulding is joined in mould in vulcanizing equipment, add each raw material of residue, carry out sulfidizing, time-temperature is 180-190 ℃, and curing time is 270-300s; Deburring, check, packing, warehouse-in, obtain described purifier upper cover sealing-ring.

Advantage of the present invention is:

Preparation method of the present invention is simple, formula rationally, the sealing-ring mechanical property that makes, anti-fatigue performance, ageing-resistant, oil resistance is outstanding, by adding strengthening agent of the present invention, strengthened the bonding force with each material composition, the hardness stress at definite elongation all is significantly improved, and can adapt to the various Working environments of purifier, has guaranteed the normal operation of purifier.

Embodiment

Embodiment 1

A kind of purifier upper cover sealing-ring, it is comprised of the raw material of following weight parts (kilogram):

Fluororubber 246 85, SG-3 type polyvinyl chloride resin 15, ground barium sulfate 14, mica powder 6, barium stearate 4, ethyl propenoate 3, phthalic acid dibutyl ester 2, para toluene sulfonamide 1, nickel powder 1, aluminum oxide 2, phenylpropyl alcohol triazole 2, dibasic lead phosphite 0.6, anilinomethyl triethoxysilane 1, peroxidation tert-butyl acetate 2, strengthening agent 16, Sulfur S-80 0.8;

Described strengthening agent is comprised of the raw material of following weight parts:

Polypropylene (T30S) powder 100, hexagonal boron nitride 4, alum powder 3, ethylene group bis-stearamides 1-2, turps 0.8, Γ-aminopropyl triethoxysilane 2, whiteruss 3;

Above-mentioned ethylene group bis-stearamides is heated to 130-140 ℃, add Γ-aminopropyl triethoxysilane, hexagonal boron nitride, insulated and stirred reaction 20 minutes, will add after turps, alum powder, polypropylene (T30S) powder mixing and stirring, be cooled to normal temperature, 1600 rev/mins were disperseed 8 minutes, and the dropping liquid paraffin body dropwises rear 100 ℃ of insulations 1 hour, cooling rear ball milling, oven dry, granulation, particle diameter is 0.2 μ m.

A kind of purifier preparation method of upper cover sealing-ring comprises the following steps:

The aforesaid propylene acetoacetic ester is mixed with mica powder, post-heating to 106 ℃ stirs, add ethyl propenoate, barium stearate, 300 rev/mins of dispersed with stirring 15 minutes, add anilinomethyl triethoxysilane, SG-3 type polyvinyl chloride resin, fully stir, add each raw material of residue except Sulfur S-80, dibasic lead phosphite, mixing, compression moulding; Rubber mass after moulding is joined in mould in vulcanizing equipment, add each raw material of residue, carry out sulfidizing, time-temperature is 190 ℃, and curing time is 300s; Deburring, check, packing, warehouse-in, obtain described purifier upper cover sealing-ring.

Performance test

Claims (2)

1. purifier upper cover sealing-ring is characterized in that what it was comprised of the raw material of following weight parts:

Fluororubber 246 85-90, SG-3 type polyvinyl chloride resin 10-15, ground barium sulfate 10-14, mica powder 5-6, barium stearate 4-6, ethyl propenoate 3-4, phthalic acid dibutyl ester 1-2, para toluene sulfonamide 1-2, nickel powder 1-2, aluminum oxide 1-2, phenylpropyl alcohol triazole 1-2, dibasic lead phosphite 0.6-1, anilinomethyl triethoxysilane 1-2, peroxidation tert-butyl acetate 1-2, strengthening agent 10-16, Sulfur S-80 0.8-1;

Described strengthening agent is comprised of the raw material of following weight parts:

Polypropylene (T30S) powder 90-100, hexagonal boron nitride 3-4, alum powder 2-3, ethylene group bis-stearamides 1-2, turps 0.8-1, Γ-aminopropyl triethoxysilane 1-2, whiteruss 3-4;

Above-mentioned ethylene group bis-stearamides is heated to 130-140 ℃, add Γ-aminopropyl triethoxysilane, hexagonal boron nitride, insulated and stirred reaction 10-20 minute, will add after turps, alum powder, polypropylene (T30S) powder mixing and stirring, be cooled to normal temperature, 1500-1600 rev/min is disperseed 6-8 minute, and the dropping liquid paraffin body dropwises rear 90-100 ℃ of insulation 1-2 hour, cooling rear ball milling, oven dry, granulation, particle diameter is 0.1-0.2 μ m.

2. a purifier as claimed in claim 1 with the preparation method of upper cover sealing-ring, is characterized in that comprising the following steps:

The aforesaid propylene acetoacetic ester is mixed with mica powder, stir post-heating to 100-106 ℃, add ethyl propenoate, barium stearate, 200-300 rev/min of dispersed with stirring 10-15 minute, add anilinomethyl triethoxysilane, SG-3 type polyvinyl chloride resin, fully stir, add each raw material of residue except Sulfur S-80, dibasic lead phosphite, mixing, compression moulding; Rubber mass after moulding is joined in mould in vulcanizing equipment, add each raw material of residue, carry out sulfidizing, time-temperature is 180-190 ℃, and curing time is 270-300s; Deburring, check, packing, warehouse-in, obtain described purifier upper cover sealing-ring.