CN105400010A - Rubber material for seal ring - Google Patents

Abstract

The invention discloses a rubber material for a seal ring. The rubber material is prepared from, by weight parts, magnesium powder, 12-14 parts of micro-encapsulation red phosphorus, 2-3 parts of vulcanizing agent BIPB, 24-27 parts of polyacrylonitrile, 12-13 parts of graphite, 3-4 parts of coal ash microsphere, 0.7-1 part of sodium dodecyl sulfate, 42-55 parts of liquid acrylonitrile butadiene rubber, 0.6-1 part of methacrylic acid, 52-60 parts of acrylonitrile butadiene rubber, 20-25 parts of styrene-butadiene rubber, 3-4 parts of polyethylene wax, 0.2-0.3 part of sodium diacetate, 4-5 parts of polyethylene glycol, 13-15 parts of butadiene styrene rubber, 4-6 parts of manganese powder, 11-13 parts of chalk and 3-4 parts of molybdenum disulfide. The rubber material has very good elasticity, high temperature resistance and aging resistance, has good sealing performance, can serve as various sealing elements, and is good in practicality.

Description

A kind of sealing-ring elastomeric material

Technical field

The present invention relates to field of rubber technology, particularly relate to a kind of sealing-ring elastomeric material.

Background technology

Elastomeric material is a kind of macromolecular material that can recover rapidly deformation under gross distortion, and it is one of important foundation industry of national economy, daily, medically provides light industry rubber product for indispensable in people's daily life; For the heavy industry such as digging, traffic, building, machinery, electronics and new industry provide various rubber production unit or rubber components, apply very extensive.In recent years, developing rapidly of rubber industry, has higher requirement to rubber item, elastomeric material must towards functionalization, become more meticulous and the future development of diversification.Traditional single elastomeric material can not meet the service requirements developed rapidly completely.Rubber belongs to elastomerics and lacks crystallizing power, and Intermolecular Forces is little, and free volume is large, so its intensity, hardness, the performance such as wear-resisting and tired are not high, so to rubber through reinforcement, will improve its performance.The strengthening agent that rubber industry is the most traditional is carbon black and white carbon black always, although have certain strengthening action, but these two kinds of strengthening agents all have very low volume density, when adding in rubber, very easily producing and flying upward, processing pollution weight, long processing time simultaneously, mixing energy consumption is large, and black-reinforced goods are single black, and these two kinds of strengthening agents are difficult to give goods higher hardness, better resistance to ventilation property etc.

Graphite is a kind of stratified material, there is excellent lubricity, under stripping state, have very high shape factor, graphite is one of material that specific tenacity is the highest, and has unique functional performance, as electroconductibility and thermal conductivity etc., and cost is low, the strongthener as rubber can improve its tribological property, but the Van der Waals force owing to having between the inert nature of graphite material itself and synusia thereof, directly join in rubber and can greatly reduce its mechanical property, reduce work-ing life.

Summary of the invention

The object of the invention is exactly the defect in order to make up prior art, provides a kind of sealing-ring elastomeric material.

The present invention is achieved by the following technical solutions:

A kind of sealing-ring elastomeric material, is made up of the raw material of following weight part: the strong powder of magnesium, microencapsulated powder oil 12-14, vulcanizing agent BIPB2-3, polyacrylonitrile 24-27, graphite 12-13, fly ash micro-sphere 3-4, sodium lauryl sulphate 0.7-1, liquid acrylonitrile butadiene rubber 42-55, methacrylic acid 0.6-1, paracril 52-60, styrene-butadiene rubber(SBR) 20-25, polyethylene wax 3-4, sodium Diacetate 0.2-0.3, polyoxyethylene glycol 4-5, wood powder 13-15, manganese powder 4-6, chalk 11-13, molybdenumdisulphide 3-4.

Described a kind of sealing-ring elastomeric material, be made up of following concrete steps:

(1) polyoxyethylene glycol, wood powder, manganese powder and chalk are added deionized water according to solid-to-liquid ratio 1:2-3 to mix well, then add sodium Diacetate be heated to boiling under constantly stirring, after dope to be formed, after drying, grinding is for subsequent use;

(2) polyacrylonitrile is added in dimethyl sulphoxide solution, carry out stirring to pulp, concentration controls at 16-18%, add methacrylic acid mixing and stirring again, the drying in vacuum drying oven by graphite and fly ash micro-sphere, adds deionized water according to solid-to-liquid ratio 1:5-7, add sodium lauryl sulphate continuation ultrasonic agitation more even, getting its supernatant liquor is added in polyacrylonitrile solution, stirred at ambient temperature 2-3h, and after filtration, standing and defoaming, spinning, carbonization obtain polyacrylonitrile composite fiber;

(3) by after short for obtained for step (3) conjugated fibre cutting and step (1) product, the liquid acrylonitrile butadiene rubber prepared mix, the calcium chloride water adding 1wt% again flocculates, through washing and in air dry oven under 50-70 ° of C dry 24-30h, cooling after for subsequent use;

(4) paracril and styrene-butadiene rubber(SBR) are added in Banbury mixer, be warming up to 90-100 ° of C, with the speed banburying 3-5min of 100-200r/min, add product, polyethylene wax and vulcanizing agent BIPB prepared by step (3), be warming up to 120-140 ° of C, with the speed banburying 10-15min of 400-600r/min, then add all the other surplus materialss with the speed banburying 5-7min of 200-400r/min, thin-pass 4-6 time, obtains elastomeric material.

Advantage of the present invention is: it is high that the present invention's employing has specific tenacity, heat conduction, conduction and the good graphite of Wear vesistance are as strongthener, because being directly added in rubber and greatly can reducing mechanical property, reduce work-ing life, graphite is added in the spinning solution of polyacrylonitrile by the present invention, pass through spinning, oxidation, the mode of charing obtains the polyacrylonitrile carbon fiber of mineral carbon load, its surface is attached to by liquid acrylonitrile butadiene rubber, prevent excessive gathering, then blendedly coprecipitatedly rubber master batch is obtained, the mixing elastomeric material obtained has excellent intensity with rubber again, fatigue resistance, heat conduction, anti-attrition, the characteristic such as corrosion-resistant, the treated wood powder added, manganese powder and chalk source are extensively, cost is low, and substantially increase the stopping property of rubber, high-strength, the performances such as anticorrosion and resistance to oxidation, elastomeric material prepared by the present invention, there is good elasticity, high temperature resistant and ageing-resistant performance, there is good stopping property simultaneously, multiple sealing member can be done, practicality is high.

Embodiment

A kind of sealing-ring elastomeric material, is made up of the raw material of following weight part (kilogram): the strong powder of magnesium, microencapsulated powder oil 12, vulcanizing agent BIPB2, polyacrylonitrile 24, graphite 12, fly ash micro-sphere 3, sodium lauryl sulphate 0.7, liquid acrylonitrile butadiene rubber 42, methacrylic acid 0.6, paracril 52, styrene-butadiene rubber(SBR) 20, polyethylene wax 3, sodium Diacetate 0.2, polyoxyethylene glycol 4, wood powder 13, manganese powder 4, chalk 11, molybdenumdisulphide 3.

Described a kind of sealing-ring elastomeric material, be made up of following concrete steps:

(1) polyoxyethylene glycol, wood powder, manganese powder and chalk are added deionized water according to solid-to-liquid ratio 1:2 to mix well, then add sodium Diacetate be heated to boiling under constantly stirring, after dope to be formed, after drying, grinding is for subsequent use;

(2) polyacrylonitrile is added in dimethyl sulphoxide solution, carry out stirring to pulp, concentration controls 16%, add methacrylic acid mixing and stirring again, the drying in vacuum drying oven by graphite and fly ash micro-sphere, adds deionized water according to solid-to-liquid ratio 1:5, add sodium lauryl sulphate continuation ultrasonic agitation more even, getting its supernatant liquor is added in polyacrylonitrile solution, stirred at ambient temperature 2h, and after filtration, standing and defoaming, spinning, carbonization obtain polyacrylonitrile composite fiber;

(3) by after short for obtained for step (3) conjugated fibre cutting and step (1) prepare product, liquid acrylonitrile butadiene rubber mixing, then the calcium chloride water adding 1wt% flocculates, through washing and in air dry oven under 50 ° of C dry 24h, cooling is rear for subsequent use;

(4) paracril and styrene-butadiene rubber(SBR) are added in Banbury mixer, be warming up to 90 ° of C, with the speed banburying 3min of 100r/min, add product, polyethylene wax and vulcanizing agent BIPB prepared by step (3), be warming up to 120 ° of C, with the speed banburying 10min of 400r/min, then add all the other surplus materialss with the speed banburying 5min of 200r/min, thin-pass 4 times, obtains elastomeric material.

The elastomeric material prepared according to embodiment carries out performance test to it, and result is as follows:

Hardness (A): 52, tensile strength (MPa): 3.3,100% stress at definite elongation (MPa): 1.5, elongation at break (%): 454, setafter break (%): 7, tear strength (KN/m): 33.1, frictional coefficient: 0.8, volume wear (mm3): 6.7.

Claims (2)

1. a sealing-ring elastomeric material, it is characterized in that, be made up of the raw material of following weight part: the strong powder of magnesium, microencapsulated powder oil 12-14, vulcanizing agent BIPB2-3, polyacrylonitrile 24-27, graphite 12-13, fly ash micro-sphere 3-4, sodium lauryl sulphate 0.7-1, liquid acrylonitrile butadiene rubber 42-55, methacrylic acid 0.6-1, paracril 52-60, styrene-butadiene rubber(SBR) 20-25, polyethylene wax 3-4, sodium Diacetate 0.2-0.3, polyoxyethylene glycol 4-5, wood powder 13-15, manganese powder 4-6, chalk 11-13, molybdenumdisulphide 3-4.

2. a kind of sealing-ring elastomeric material according to claim 1, is characterized in that, be made up of following concrete steps:

(1) polyoxyethylene glycol, wood powder, manganese powder and chalk are added deionized water according to solid-to-liquid ratio 1:2-3 to mix well, then add sodium Diacetate be heated to boiling under constantly stirring, after dope to be formed, after drying, grinding is for subsequent use;

(2) polyacrylonitrile is added in dimethyl sulphoxide solution, carry out stirring to pulp, concentration controls at 16-18%, add methacrylic acid mixing and stirring again, the drying in vacuum drying oven by graphite and fly ash micro-sphere, adds deionized water according to solid-to-liquid ratio 1:5-7, add sodium lauryl sulphate continuation ultrasonic agitation more even, getting its supernatant liquor is added in polyacrylonitrile solution, stirred at ambient temperature 2-3h, and after filtration, standing and defoaming, spinning, carbonization obtain polyacrylonitrile composite fiber;

(3) by after short for obtained for step (3) conjugated fibre cutting and step (1) product, the liquid acrylonitrile butadiene rubber prepared mix, the calcium chloride water adding 1wt% again flocculates, through washing and in air dry oven under 50-70 ° of C dry 24-30h, cooling after for subsequent use;

(4) paracril and styrene-butadiene rubber(SBR) are added in Banbury mixer, be warming up to 90-100 ° of C, with the speed banburying 3-5min of 100-200r/min, add product, polyethylene wax and vulcanizing agent BIPB prepared by step (3), be warming up to 120-140 ° of C, with the speed banburying 10-15min of 400-600r/min, then add all the other surplus materialss with the speed banburying 5-7min of 200-400r/min, thin-pass 4-6 time, obtains elastomeric material.