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High-durability plate-type rubber support and preparation method thereof
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A technology of plate-type rubber bearings and rubber bearings, applied in chemical instruments and methods, lamination, coating, etc., can solve the problem of low cost performance of plate-type rubber bearings
Inactive Publication Date: 2016-12-14
HENGSHUI QIJIAN BRIDGES & TUNNELS RUBBER CO LTD
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Abstract
Description
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Problems solved by technology
[0005] The first technical problem solved by the present invention is to provide a plate rubber bearing with high durability, relatively low cost and high cost performance, improve the durability of the existing plate rubber bearing, and solve the problem of low cost performance of the plate rubber bearing
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Embodiment 1
[0098] The first step, preparation
[0099] According to the designed rubber formula, the rubber compound is mixed, and the reinforced steel plate is cut and processed according to the design structure size of the bearing;
[0101] A plurality of vent holes are evenly drilled on the longitudinal mold side of the mold and the support, and the shape of the vent holes is a cone with a large inner side and a small outer side;
[0102] The third step is to make molds and group molds
[0103] According to the design structure size of the support, stack the multi-layer reinforced steel plate and the multi-layer rubber layer into the mold at intervals, and the top and bottom surfaces are rubber layers;
[0105] Place the completed mold on the vulcanizer, apply a pressure of 3MPa and a temperature of 210°C to the mold, and keep it for 120min;
[0106] The fifth step, demoulding
[0107] Remove the te...
Embodiment 2
[0117] The first step, preparation
[0118] According to the designed rubber formula, the rubber compound is mixed, and the reinforced steel plate is cut and processed according to the design structure size of the bearing;
[0120] A plurality of vent holes are evenly drilled on the longitudinal mold side of the mold and the support, and the shape of the vent holes is a cone with a large inner side and a small outer side;
[0121] The third step is to make molds and group molds
[0122] According to the design structure size of the support, stack the multi-layer reinforced steel plate and the multi-layer rubber layer into the mold at intervals, and the top and bottom surfaces are rubber layers;
[0124] Place the completed mold on the vulcanizer, apply a pressure of 30 MPa and a temperature of 90 °C to the mold, and keep it for 3 minutes;
[0125] The fifth step, demoulding
[0126] Remove t...
Embodiment 3
[0136] The first step, preparation
[0137] According to the designed rubber formula, the rubber compound is mixed, and the reinforced steel plate is cut and processed according to the design structure size of the bearing;
[0139] A plurality of vent holes are evenly drilled on the longitudinal mold side of the mold and the support, and the shape of the vent holes is a cone with a large inner side and a small outer side;
[0140] The third step is to make molds and group molds
[0141] According to the design structure size of the support, stack the multi-layer reinforced steel plate and the multi-layer rubber layer into the mold at intervals, and the top and bottom surfaces are rubber layers;
[0143] Place the completed mold on the vulcanizer, apply a pressure of 12MPa and a temperature of 135°C to the mold, and keep it for 12min;
[0144] The fifth step, demoulding
[0145] Remove the te...
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Abstract
The invention belongs to the technical fields of supports and preparation method of supports and discloses a high-durability plate-type rubber support and a preparation method thereof. The high-durability plate-type rubber support is mainly characterized by comprising a laminated rubber support body, wherein the outer side of the laminated rubber support body is packaged with a heat oxygen aging-resistant protecting layer, and the heat oxygen aging-resistant protecting layer comprises a component A, a component B and a catalyst; the component A comprises the following materials in parts by weight: 95-105 parts of low-viscositypolyol, 5-20 parts of low-molecular-weight hydroxyl silicone oil and 10-70 parts of isocyanate; and the component B comprises the following materials in parts by weight: 4-18 parts of a chain extender, 0.1-5 parts of an anti-aging agent, 0.1-2 parts of a defoaming agent and 0.1-5 parts of a catalyst. The heat oxygen aging-resistant protecting layer is a polyurethane material, and a molecular structure does not contain carbon-carbon double bonds, so that the problem that the carbon-carbon double bonds in an existing rubber protecting layer easily react with ozone to accelerate ageing is solved, and the heat oxygen aging resistance of the plate-type rubber support is improved.
Description
technical field [0001] The invention relates to the technical field of a rubber bearing and a preparation method thereof, in particular to a high-durability plate-type rubber bearing and a preparation method thereof. Background technique [0002] The plate rubber bearing is an important structural component of the upper structure of the bridge. It plays an important role in the bridge, such as load transmission, displacement transmission, and proper rotation angle. In addition to meeting the basic physical and mechanical performance indicators specified in the standard, it should also have excellent durability. [0003] Existing plate rubber bearings operate for 3 to 5 years, and many diseases such as cracking of the rubber protective layer, exposed steel plates, uneven bulging and degumming, voiding, shear overrun and bearing position string movement will often occur. In addition to product production quality, construction and installation defects, etc., the main reason is...
Claims
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Application Information
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