Pure water-resistant hydraulic support rubber tube and preparation method thereof
A technology for hydraulic supports and hoses, applied in tubular items, other household appliances, applications, etc., can solve problems such as electrochemical corrosion, pipeline blockage, etc., to improve electrical insulation performance, reduce pipeline blockage, and reduce zinc salts. Precipitation effect
Pending Publication Date: 2021-07-20
青岛橡六胶管有限公司
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Problems solved by technology
[0005] The second problem is the choice of the anti-aging system
[0006] The third issue is the choice of reinforcement system
[0007] The fourth issue is the choice of plasticizer
[0008] The fifth question is the choice of vulcanization system
[0009] The sixth problem is the problem of electrochemical corrosion
[0010] The seventh problem is the problem of pipeline blockage
The common vulcanization vulcanization system used in the inner lining of traditional hydraulic hoses has the advantage of improving the bonding performance of rubber and steel wires, but the precipitation of soluble zinc salts (combined use of zinc oxide and stearic acid) in the common sulfur vulcanization system leads to precipitation and pipeline failure. jam
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preparation example Construction
[0032] Preparation method of pure water resistant hydraulic support hose:
[0033] Step 1. Put NBR6250 and SBR1500 into the internal mixer, and then put various rubber additives and carbon black into the internal mixer for mixing. The mixing pressure is 12MPa, the speed is 30r, the mixing time is 600s, and the highest rubber discharge temperature is 160°C; The process requires the glue to be discharged after the calender and the cooling machine, and then the next sheet is stored. The minimum storage time of the mixed rubber is 96 hours;
[0034] Step 2. After parking for a period of time, put the rubber into the kneader. Process parameters: pressure 15MPa, mixing time 240s, glue discharge temperature up to 130°C, and then put the vulcanizing agent (sulfur, accelerator, anti-scorch agent) into the kneader , After mixing in the mixing room, the film is released after being mixed by the open mill. The parking time of the rubber material is 24h~336h, and the parking temperature is...
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The invention discloses a pure water resistant hydraulic support rubber tube, which is prepared from the following ingredients in parts by weight: 65-90 parts of NBR6240, 10-35 parts of SBR1500, 2.0-3.0 parts of ZnO, 0.5-1.0 part of SA, 1.0-2.0 parts of 4010NA, 1.0-2.0 parts of RD, 1.5-3.0 parts of paraffin, 20-40 parts of N660, 60-80 parts of N774, 10.0-15.0 parts of coumarone, 1.0-2.0 parts of S, 0.5-0.8 part of PVI, 1.0-2.5 parts of DTDM and 0.5-1.5 parts of DZ. According to the pure-water-resistant hydraulic support rubber pipe, the lining layer is prepared from nitrile rubber and butadiene styrene rubber in a matched mode, and the requirements for water resistance and oil resistance are met at the same time; and the lining layer uses medium reinforced carbon black, is not suitable for inorganic filler, meets the requirements of water resistance and oil resistance, improves the electrical insulation property, reduces the conductivity, reduces the electrochemical corrosion, uses a composite vulcanization system, matches the vulcanization speeds of two kinds of rubber with different polarities, reduces the electrochemical corrosion, and reduces the pipeline blockage caused by zinc salt precipitation. Meanwhile, the invention further discloses a preparation method of the pure-water-resistant hydraulic support rubber tube.
Description
technical field [0001] The invention relates to a rubber hose and a preparation method thereof, in particular to a pure water-resistant hydraulic support hose and a preparation method thereof. Background technique [0002] Water is a very complex multicomponent aqueous solution. Various elements in water exist in certain physical and chemical forms. For example, copper exists mainly in the form of organic compounds in water; while sodium element exists in the form of Na+ ions. The pure water hydraulic support hose needs to have water resistance, corrosion resistance, wear resistance and other properties. Therefore, the selection of suitable rubber raw materials and rubber additives such as anti-aging agents, reinforcing agents, plasticizers, and vulcanizing agents is the key to improving the performance of the inner lining. [0003] The first problem is the choice of rubber material. Natural rubber has high strength, high elongation, and fatigue resistance, but the compo...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C08L9/02C08L9/06C08L91/00C08K13/02C08K3/22C08K3/04C08K3/06B29D23/00
CPCC08L9/02B29D23/001C08L2205/035C08L2205/02C08L2203/18C08K2201/011C08K2003/2296
Inventor 李新强刘刚贾新江王明智李春荣李丕山
Owner 青岛橡六胶管有限公司