CN2150175Y

CN2150175Y - Nitrile-butadiene rubber composite dragon belt

Info

Publication number: CN2150175Y
Application number: CN 92219688
Authority: CN
Inventors: 张志杰
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-09-07
Filing date: 1992-09-07
Publication date: 1993-12-22
Anticipated expiration: 2002-09-07

Abstract

The utility model relates to a nitrile-butadiene rubber composite dragon belt, belonging to the technical field of the conveyor belt. The utility model mainly solves the technical problems that the existing dragon belt is not wear-resistant, and the canvas and the nylon plate delaminate, etc. The nitrile-butadiene rubber composite dragon belt is made of the nylon plate and the high wear-resistant synthetic rubber which are adhered by the adhesive agent integrally. The lap of the dragon belt makes the both ends of the nylon plate worn to definite inclination and have definite length, the nylon plate is connected onto an annular bar shape through the adhesive agent, and the lap point is adhered with the high wear-resistant synthetic rubber. The utility model has the advantages of wearing-resistance, oil-resistance, long service life, low cost and simple structure, and the utility model is antistatic and is widely used on the machine with high running conveyor belt.

Description

Nitrile-butadiene rubber composite dragon belt

A kind of is the compound tengential belt of butyronitrile rubber of skeleton with the nylon plate, is widely used in the high speed transmission of spinning machinery, and this nylon tape is elongated.

The domestic and international at present compound tengential belt of producing of butyronitrile rubber (hereinafter to be referred as tengential belt), adopt the traditional handicraft pattern to produce more, generally be to be skeleton with the nylon plate, pressurize by heating and maintenance bonding nylon canvas of regular hour with adhesives on its two sides, embrocate on nylon canvas then and contain various additive-treated oil neoprene as driving surface, its structure is seen shown in Figure 1.Generally, according to standard-required tengential belt gross thickness is 2.2 millimeters, and wherein the thickness of nylon plate is 0.8 millimeter, and the thickness of nylon canvas is 0.5 millimeter, nylon canvas will be bonded on the two sides of nylon plate, and the elastomeric thickness that is coated in the nylon canvas one side like this has only 0.2 millimeter.Because it is too thin that neoprene is embrocated, can not show the elasticity of rubber, in addition, it is in service that tengential belt often is in high temperature and high speed, and the neoprene of embrocating is worn away very soon.Moreover nylon canvas (90 ℃ of heatproofs) and both temperature requirements of neoprene (curing temperature is 142 ℃～147 ℃) are different, and the adhesive ability of neoprene on nylon canvas is not strong, and neoprene easily comes off.Because tengential belt is widely used in the high-speed operation of spinning machinery, speed as the new type of airflow spinning machine can reach more than 60,000 rev/mins, and the speed of elastic filament false twisting machine reaches 1,250,000 rev/mins, and the friction temperature of its tengential belt can reach about 75 ℃, cause nylon canvas and nylon plate to break away from, tengential belt can't be used.The joint of the tengential belt that uses also is joining seam at present, and certain angle after being bonded on the nylon plate, is made to nylon canvas by the joining seam place, then two gradients are stacked, there is tangible joining seam vestige to see Fig. 2, increased the thickness of tengential belt like this at the joining seam place, influence the result of use of tengential belt.

Goal of the invention of the present utility model, for nylon canvas and the nylon plate that overcomes tengential belt easily breaks away from, neoprene easily grinds off exactly, in the defective of the joining seam place of tengential belt thickness increase.The utility model adopts and removes nylon canvas, increases elastomeric thickness, joining seam place non junction vestige.

The utility model is achieved in that at the nylon plate nylon canvas that gets on to fall the high abrasion neoprene directly is bonded on the two sides of nylon plate, the structure of tengential belt is seen Fig. 3, and it is made up of nylon plate 5, high abrasion neoprene 6, lining cement 7.Tengential belt is the ring bar shaped, and appearance surfaces has the decorative pattern shape.The annular joining seam place of tengential belt wears into the two ends of nylon plate 5 to have certain gradient, and keep certain length dimension, then the gradient place is bonded together, again high abrasion neoprene 6 bonding on, do not see that from appearance surfaces joint is arranged like this, and joint thickness does not increase, and the joining seam shape is seen Fig. 4.The joining seam place is bonding firmly to make lining cement with compounds such as resorcinol, methyl alcohol, dibutyl esters in order to make, and vulcanizes overlap joint.Nylon plate 5 can be purchased ready-made product, high abrasion neoprene 6 is to be major ingredient with the butyronitrile rubber, is furnished with aniseed calcium carbonate, potter's clay, mixes compositions such as small powder vinyl chloride-vinyl acetate resin, cadmium stearate, sulphur, benzothiazole disulfide, antioxidant D, colorant zinc oxide, dibutyl phthalate, stearic acid again.Above various materials are combined together on request, at first butyronitrile rubber are destroyed its chain structure with mill and add dibutyl phthalate then and carry out one, two section plasticating, its pitch time is 8～15 hours, and temperature can keep 40 ℃～58 ℃.Carry out high temperature then and mediate rubber and plastic, temperature is generally grasped at 150 ℃～153 ℃, this moment is suppressing in chloric acid resin and the cadmium stearate adding butyronitrile rubber, carrying out thin-pass after the compacting leaves behind, after parking more than 20 hours, materials such as small powder benzothiazole disulfide, sulphur, stearic acid, zinc oxide, antioxidant D, colorant are added successively, make it reach the state of elastomeric compound.Play the behaviour refining of triangle bag then with aniseed calcium carbonate, potter's clay, after mixing, pull into sheet according to the requirement of tengential belt thickness, in order to bonding usefulness.Lining cement 7 is the peel strengths that directly have influence between nylon plate 5 and the high abrasion neoprene 6, directly influence the service life of tengential belt, lining cement 7 is made up of polyisocyanates, benzene, ethanol, methyl alcohol, nylon particle, resorcinol, butyronitrile rubber, dioctyl ester etc., wherein by benzene government rubber is dissolved and adds ethanol to form the miscible liquid of rubber.Above material is divided into two groups, the A group is mixed liquid by polyisocyanates, rubber and is formed, the B group is made up of resorcinol, methyl alcohol, nylon particle, dioctyl ester, the stirring of heating of B group material, temperature is generally grasped at 70 ℃～80 ℃, then two groups of materials of A, B is carried out proportioning, simultaneously nylon plate 5 is handled and is embrocated on the two sides of nylon plate 5, high abrasion neoprene 6 bonding on, form tengential belt.When being vulcanized, adopts by tengential belt two-step method, in the time of 130 ℃～140 ℃, reach the elastomeric sulfuration point of high abrasion, at 100 ℃～115 ℃ tengential belt was carried out for second step and handle, form the outward appearance decorative pattern, decorative pattern forms by the mould compacting, and it is fixed that the length of ring bar shaped tengential belt is looked customer requirements.

The utlity model has that technology is simple, cost is low, long service life, wear-resisting, oil resistant, characteristics such as antistatic, owing on the nylon plate, pass through the direct bonding high abrasion neoprene of lining cement, improve the elasticity of tengential belt, subduing property, elasticity, increased the slyness in the high temperature and high speed running.The joining seam of tengential belt has adopted rubber closed, and its thickness evenly, tension stability, permanent deformation be little.It is widely used in the high-speed conveyor of industries such as weaving, coal.

Description of drawings:

Fig. 1 prior art tengential belt structural section scheme drawing

1-neoprene 2-nylon canvas 3-nylon plate

Fig. 2 prior art tengential belt joining seam structural representation

The 4-joining seam

Fig. 3 the utility model tengential belt structural section scheme drawing

Fig. 4 the utility model tengential belt structure joining seam structural representation

The 8-joining seam

Embodiment:

Butyronitrile rubber is destroyed its chain structure by mill, add dibutyl phthalate and carry out one, two sections plasticate, plasticating at interval respectively is 8～15 hours, temperature is grasped at 40 ℃～58 ℃, carry out high temperature then and mediate rubber and plastic, temperature is grasped about 150 ℃, adding chlorine vinegar resin and cadmium stearate simultaneously suppresses, cadmium stearate is suppressed, and thin-pass is left behind, after parking more than 20 hours, with benzothiazole disulfide, sulphur, stearic acid, zinc oxide, antioxidant D, material such as colorant adds successively, reaches the state of elastomeric compound, then with aniseed calcium carbonate, potter's clay is played behaviour's refining of triangle bag, requirement according to tengential belt thickness after mixing pulls into sheet, makes the high abrasion neoprene.The lining cement of making is embrocated on the two sides of nylon plate, above the high abrasion neoprene is bonded in, form tengential belt, tengential belt is carried out two step sulphurizations, be issued to the elastomeric sulfuration point of high abrasion 130 ℃～140 ℃ temperature, under 100 ℃～115 ℃ temperature, form decorative pattern, ring bar shaped tengential belt is worn into two of nylon plate has certain gradient, and keep certain size, the place bonds together with lining cement two gradient, the high abrasion neoprene is bonded on the nylon plate, vulcanizes with decorative pattern and handle, form tengential belt.The utlity model has characteristics such as wear-resisting, antistatic, oil resistant, tension stability, permanent deformation be little, be widely used in industries such as high-speed conveyor.

Claims

1, a kind of is that the compound tengential belt of government rubber of skeleton is characterized in that high abrasion neoprene 6 directly is bonded at by lining cement on the two sides of nylon plate 5, and tengential belt is the ring bar shaped with the nylon plate, and appearance surfaces has the decorative pattern shape.

2, it is characterized in that as the compound tengential belt of the said government rubber of claim 1, the joining seam place of ring bar shaped tengential belt, be the two ends of nylon plate 5 to be worn into have certain gradient, and keep certain length, the gradient place of nylon plate 5 is connected together with lining cement, then high abrasion neoprene 6 is bonded on the two sides of nylon plate 5, from seeing in appearance joint is not arranged like this, joint thickness does not increase.