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Modified natural rubber bridge support material and preparation method thereof

A technology of natural rubber and bridge bearing, applied in the field of bridge construction engineering, can solve the problems of high shock absorption, poor damping performance, poor physical and mechanical properties, and high raw material cost, achieve outstanding solvent resistance, reduce production cost, and simple preparation method Effect

Active Publication Date: 2016-06-15
仝国磊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a rubber bridge bearing material and its preparation method to solve the problems of high raw material cost, poor physical and mechanical properties, ozone resistance, weather aging resistance and high shock absorption and high damping performance of existing rubber bridge bearing materials. Poor question

Method used

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  • Modified natural rubber bridge support material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Weigh CPE-140B40kg, NR-smoke sheet 3#45kg, terpene phenolic resin 1.5kg, rubber release agent TM-800.3kg, light magnesium oxide 4kg, carbon black N55032kg, HFR-300025kg, phthalate Dioctyl formate 3kg, barium stearate 2.5kg, zinc oxide 3kg, stearic acid 0.5kg, paraffin 0.5kg, hindered phenol AO-608kg, dicumyl peroxide 3kg, silane coupling agent KH-5701.8kg, Sulfur 0.5kg;

[0017] (2) Put HFR-3000 and silane coupling agent KH-570 in a mixer, heat to 60°C and stir for 8 minutes, and stack for 1.5 hours after discharging to obtain modified HFR-3000;

[0018] (3) Put CPE-140B on the heating type open mill, set the roller distance to 0.8mm, and carry out plasticization at 80°C for 13 minutes. After plasticization, add modified HFR-3000, light magnesium oxide, and stearic acid in sequence Barium, paraffin, mixed evenly, to get CPE mixing masterbatch;

[0019] (4) Put the natural rubber NR-smoke sheet 3# on the heated and pressurized internal mixer, set the roller distanc...

Embodiment 2

[0022] (1) Weigh CPE-140B50kg, NR-smoke sheet 3#50kg, terpene phenolic resin 1.5kg, rubber release agent TM-800.5kg, light magnesium oxide 5kg, carbon black N55030kg, HFR-300030kg, phthalate Dioctyl formate 5kg, barium stearate 3kg, zinc oxide 3kg, stearic acid 1kg, paraffin 1kg, hindered phenol AO-6010kg, dicumyl peroxide 3.5kg, silane coupling agent KH-5701.8kg, sulfur 0.9 kg;

[0023] (2) Put HFR-3000 and silane coupling agent KH-570 in a mixer, heat to 75°C and stir for 6 minutes, and stack for 2 hours after discharging to obtain modified HFR-3000;

[0024] (3) Put CPE-140B on the heating type open mill, set the roller distance to 1mm, and carry out plasticization at 85°C for 15 minutes. After plasticization, add modified HFR-3000, light magnesium oxide, and barium stearate in sequence , paraffin, mixed evenly to obtain the CPE mixing masterbatch;

[0025] (4) Put the natural rubber NR-smoke sheet 3# on the heating and pressurized internal mixer, set the roller distance ...

Embodiment 3

[0028] (1) Weigh CPE-140B65kg, terpene phenolic resin 4kg, NR-smoke sheet 3#55kg, rubber release agent TM-800.6kg, light magnesium oxide 6kg, carbon black N55032kg, HFR-300035kg, phthalic acid Dioctyl ester 6kg, barium stearate 3.5kg, zinc oxide 4kg, stearic acid 1.5kg, paraffin 1.5kg, hindered phenol AO-6012kg, dicumyl peroxide 5kg, silane coupling agent KH-5701.8kg, sulfur 1.5kg;

[0029] (2) Put HFR-3000 and silane coupling agent KH-570 in a mixer, heat to 85°C and stir for 4 minutes, and stack for 2.5 hours after discharging to obtain modified HFR-3000;

[0030](3) Put CPE-140B on the heating type open mill, set the roller distance to 0.9mm, and carry out plasticization at 90°C for 14 minutes. After plasticization, add modified HFR-3000, light magnesium oxide, and stearic acid in sequence Barium, paraffin, mixed evenly, that is the CPE mixing masterbatch;

[0031] (4) Put the natural rubber NR-smoke sheet 3# on the heating and pressurized internal mixer, set the roller d...

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Abstract

The invention discloses a rubber bridge support material. The rubber bridge support material is prepared from CPE rubber, natural rubber, terpene phenolic resin, TM-80, light magnesium oxide, carbon black, HFR-3000, DOP, barium stearate, zinc oxide, stearic acid, paraffin, hindered phenol, DCP, a silane coupling agent KH-570 and sulphur. The preparation method of the rubber bridge support material includes the steps that all the components are weighed; HFR-3000 is modified; CPE rubber is plastified, modified HFR-3000, light magnesium oxide, barium stearate and paraffin are added, even mixing is carried out, and CPE mixing masterbatch is obtained; natural rubber is plasticated, terpene phenolic resin, zinc oxide, stearic acid and TM-80 are added, even mixing is carried out, CPE mixing masterbatch is added for joint mixing, hindered phenol, carbon black and DOP are added, mixing is carried out at a high temperature, and a rubber material is obtained; DCP and sulphur are added into the rubber material, mixing is carried out, and the rubber bridge support material is obtained. According to the rubber bridge support material, on the premise of guaranteeing good physical and mechanical properties of the prepared material, the good characteristics of low cost, high wear resistance, ozone resistance, weather aging resistance, high damping and the like are achieved; the preparation method of the rubber bridge support material is simple, good in operability and suitable for industrial production, application and popularization.

Description

technical field [0001] The invention relates to the field of bridge construction engineering, in particular to a modified natural rubber bridge support material and a preparation method thereof. Background technique [0002] With the rapid development of my country's transportation industry, various long-span bridges and high-speed railways continue to emerge. Therefore, the requirements for the bearing capacity of bridge supports and their ability to adapt to displacement and corners are constantly increasing, and new bridges that are suitable for them are developed and researched. Stands are very important. The bridge bearing mainly acts on the response of the bridge superstructure and transmits it to the bridge abutment, and at the same time completes the horizontal displacement, rotation angle and deformation required by the overall structure, and plays a certain role in shock absorption. At present, the materials commonly used in the industry to make bridge supports are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L23/28C08K13/06C08K9/06C08K3/22C08K3/04C08K5/12C08K5/098
CPCC08L7/00C08L23/286C08L2201/08C08L2205/035C08K13/06C08K9/06C08K2003/222C08K3/04C08K5/12C08K5/098
Inventor 仝国磊
Owner 仝国磊
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