Sizing material for building shock isolation rubber support and preparation method of sizing material

Abstract

The invention discloses a sizing material for a building shock isolation rubber support and a preparation method of the sizing material. The sizing material comprises the following raw materials in parts by weight: 100 parts of natural rubber, 4-6 parts of zinc oxide, 2-3 parts of stearic acid, 1-2 parts of microcrystalline wax, 1-2 parts of a flowing exhaust agent, 4.5-5 parts of an anti-aging agent, 1-2 parts of an accelerator, 1.1-1.3 parts of a vulcanizing agent, 1-2 parts of sulfur, 9-10 parts of N774 carbon black, 20-25 parts of engine oil and 6.5-7 parts of liquid nitrile rubber. The finished product is prepared from the components in the formula through plastication, mixing and vulcanization processes. According to the invention, a part of liquid nitrile rubber is added into the natural rubber, and then the proportions of other components are adjusted, so that bonding (peeling) strength between rubber and steel plates can be increased, and elastic resilience of the building shock isolation support rubber is improved.

Description

technical field [0001] The invention belongs to the technical field of preparation of building shock-isolation rubber bearings, and in particular relates to a rubber material for building shock-isolation rubber bearings and a preparation method thereof. Background technique [0002] The traditional anti-seismic technology is to firmly connect the superstructure and the foundation of the building. In order to build a stronger house, thicker steel bars and more concrete are poured, but the anti-seismic effect is not ideal. The seismic isolation bearing is to add a seismic isolation layer between the upper structure and the foundation, and install a rubber seismic isolation bearing to play a role of soft connection with the ground. Through this technology, about 80% of the energy of the earthquake can be offset. The rubber shock-isolation bearing is a kind of shock-isolation bearing, which is composed of multiple layers of steel plates and rubber alternately laminated. It can ...

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Problems solved by technology

[0003] At present, the softener in the formula of the building shock-isolation bearing compound generally adopts mechanical oil or naphthenic oil, and the dosage is 20 to 40 parts. Due to the large amount of softener, it is easy to seep out during long-term parking or use. At present , the existing defects of rubber shock-isolation bearings are: 1. The peel strength between rubber and steel plate is low, generally 7-9N / mm; "Out of color" refers to the softener or other anti-aging agent added too much, which exceeds the solubility in rubber and is sprayed on the surface of the rubber product to form a cloud), which affects the appearance quality of the building's seismic isolation bearing; 3. The resilience of building isolation bearings is poor. The performance is that after the building isolation bearings are subjected to large displacement shear (350% to 400% of the total thickness of the rubber layer), the sides of the bearings are prone to bulging and permanent deformation. , will affect the service life of building isolation bearings and isolation buildings

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