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SMC (sheet molding composite) Material and sidewalk system using same

A composite material and sidewalk technology, applied in applications, home appliances, other home appliances, etc., can solve the problems of uneven stress on angle steel beams, poor dimensional consistency, and increase the load of bridge decks, so as to reduce installation costs, resist compression and improve performance. High tensile strength and improved surface gloss

Pending Publication Date: 2018-08-14
HEBEI HENGRUI COMPOSITE MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The sidewalk system is the main auxiliary facility of bridge construction. At present, in the construction of simply supported T-beams of railways in my country, the sidewalk step slabs are basically made of C30 concrete, and the brackets are welded with angle steel. The welded brackets are anchored by bolts. The method is fixed on the pre-embedded steel plate outside the simply supported T-beam slag retaining wall. The railing is welded to the bracket with angle steel, and the angle steel is interspersed in the middle as the railing. These materials are not only heavy, but also increase the load on the bridge deck and improve the impact on the beam body and The structural strength requirements of the bridge pier; and the transportation is inconvenient, requiring on-site welding construction of the project. The dimensional consistency of the on-site welding construction in the vertical direction is very poor. It brings potential safety hazards, and at the same time, the construction efficiency is low, and the welding on the bridge is a high-altitude operation, which is likely to cause personal injury and death

Method used

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  • SMC (sheet molding composite) Material and sidewalk system using same
  • SMC (sheet molding composite) Material and sidewalk system using same
  • SMC (sheet molding composite) Material and sidewalk system using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of SMC composite material, it comprises the upper polyethylene film layer, upper resin paste layer, chopped glass fiber layer, continuous glass fiber layer, carbon fiber fabric layer, aramid fiber fabric layer, lower resin paste layer arranged in sequence from top to bottom layer and the lower polyethylene film layer; the upper resin paste layer is composed of the following materials in parts by weight: 65 parts of vinyl resin, 35 parts of low-shrinkage additives, 9 parts of nanocomposite preparations, 40 parts of hydrated aluminum hydroxide powder, 3 parts of thickener, 1 part of oxyacetic acid chelating titanate coupling agent and 1 part of ethylene glycol chelating titanate coupling agent. The composition ratio and preparation method of the lower resin paste layer and the upper resin paste layer are the same. The fiber directions of the chopped glass fiber layer, continuous glass fiber layer, carbon fiber fabric layer and aramid fiber fabric layer are arranged...

Embodiment 2

[0039] On the basis of Example 1, only the component distribution ratio of the resin paste layer is changed, 70 parts of vinyl resin, 30 parts of low-shrinkage additives, 11 parts of nanocomposite preparations, 30 parts of hydrated aluminum hydroxide powder, 4 parts of thickener, 1.5 parts of oxyacetic acid chelating titanate coupling agent and 0.8 parts of ethylene glycol chelating titanate coupling agent.

Embodiment 3

[0041] On the basis of Example 1, only the component distribution ratio of the resin paste layer is changed, 60 parts of vinyl resin, 40 parts of low-shrinkage additives, 8 parts of nanocomposite preparations, 50 parts of hydrated aluminum hydroxide powder, 2.5 parts of thickener, 0.8 parts of oxyacetic acid chelating titanate coupling agent and 1.5 parts of ethylene glycol chelating titanate coupling agent.

[0042] A kind of manufacture method of SMC composite material, it comprises the steps:

[0043] Step 1: In parts by weight, 60-70 parts of vinyl resin, 30-40 parts of low-shrinkage additive, 8-11 parts of nanocomposite preparation, 30-50 parts of hydrated aluminum hydroxide powder, and oxyacetic acid chelating titanate Put 0.8-1.5 parts of coupling agent, 0.8-1.5 parts of ethylene glycol chelating titanate coupling agent and 2.5-4 parts of thickener into the mixing tank, set the speed of the mixing tank to 1200 rpm, and stir for 20 minutes;

[0044] Step 2: Transfer the...

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Abstract

The invention relates to an SMC (sheet molding composite) material and a sidewalk system using the same. The SMC material comprises an upper polyethylene film layer, an upper resin paste layer, a chopped glass fiber layer, a continuous glass fiber, a carbon fiber fabric layer, an aramid fiber fabric layer, a lower resin paste layer and a lower polyethylene film layer. The sidewalk system comprisesa sidewalk cross beam, cable ducts, cover plates, a sidewalk handrail and sidewalk handrail bars, which are made with the SMC material by means of integral molding. The SMC material herein has high compressive and tensile strengths, may replace steel plates and steel angles, can effectively improve surface gloss of molded products of the SMC material, and has good ageing resistance and corrosionresistance.

Description

technical field [0001] The invention relates to the field of bridge engineering construction, in particular to an SMC composite material and a sidewalk system using the material. Background technique [0002] The sidewalk system is the main auxiliary facility of bridge construction. At present, in the construction of simply supported T-beams of railways in my country, the sidewalk step slabs are basically made of C30 concrete, and the brackets are welded with angle steel. The welded brackets are anchored by bolts. The method is fixed on the pre-embedded steel plate outside the simply supported T-beam slag retaining wall. The railing is welded to the bracket with angle steel, and the angle steel is interspersed in the middle as the railing. These materials are not only heavy, but also increase the load on the bridge deck and improve the impact on the beam body and The structural strength requirements of the bridge pier; and the transportation is inconvenient, requiring on-site ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/08E01D19/10C08L63/10C08L31/04C08K13/06C08K9/10C08K3/22C08K9/04C08K5/098C08K3/26C08K5/14B32B27/32B32B17/12B32B17/02B32B9/00B32B9/04B32B27/34B32B27/12B32B27/02B32B33/00B29D7/01
CPCE01D19/083E01D19/086E01D19/10E01D19/103C08L63/10B29D7/01B32B5/08B32B5/26B32B9/007B32B9/045B32B9/047B32B17/067B32B27/12B32B27/32B32B27/34B32B33/00C08K2201/011C08K2003/2227C08K2003/265B32B2307/552B32B2307/406B32B2307/206B32B2307/718B32B2307/714B32B2262/106B32B2262/101B32B2262/0269C08L31/04C08K13/06C08K9/10C08K3/22C08K9/04C08K5/098C08K3/26C08K5/14
Inventor 罗庆君张建庭黄恒林
Owner HEBEI HENGRUI COMPOSITE MATERIALS CO LTD
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