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Continuous glass fiber reinforced polyurethane composite material walking board and preparation method thereof

A glass fiber and composite material technology, used in buildings, roads, bridges, etc., can solve the problem that the walking board cannot be processed twice, and achieve the effects of light weight, convenient installation and extended service life

Inactive Publication Date: 2019-03-08
铁科腾跃科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is to provide a walking board made of continuous glass fiber reinforced polyurethane composite material and its preparation method, so as to reduce the weight of the walking board, solve the problem that the existing walking board cannot be processed twice, and improve the various properties of the walking board at the same time. Physical and mechanical properties, so that it has maintenance-free function

Method used

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  • Continuous glass fiber reinforced polyurethane composite material walking board and preparation method thereof

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preparation example Construction

[0033] The above-mentioned preparation method of a continuous glass fiber reinforced polyurethane composite walking board specifically includes the following steps.

[0034] A. Place the continuous glass fiber on the creel of the yarn guide felt device, lead it out through the yarn guide hole, and pass through the preforming device, the glue injection box of the glue injection device, and the mold of the curing molding device in sequence according to the structure of the walking board , a hydraulic tractor that is introduced into the traction unit.

[0035] B. Place the reinforcing felt on the reel of the yarn guiding felt device, lead it out through the felt guiding plate, pass through the preforming device, the glue injection box of the glue injection device, and the mold of the curing molding device in sequence according to the structure of the walking board, and then introduce to the hydraulic tractor of the traction unit.

[0036] C. Connect the glue injection machine of t...

Embodiment 1

[0042] The walking board in this embodiment is prepared from the following components in parts by weight: 50 parts of continuous glass fiber, 20 parts of reinforcing mat, and 25 parts of polyurethane resin. Among them, the continuous glass fiber adopts alkali-free direct yarn with a number of 9600tex, the reinforcing mat is a seam mat, the polyurethane resin is composed of isocyanate component A and polyether component B, and the mass ratio of component A to component B is 105: 100.

[0043] This example was prepared using the following steps.

[0044] A. Place the continuous glass fiber on the creel of the yarn guide felt device, lead it out through the yarn guide hole, and pass through the preforming device, the glue injection box of the glue injection device, and the mold of the curing molding device in sequence according to the structure of the walking board , a hydraulic tractor that is introduced into the traction unit.

[0045] B. Place the reinforcing felt on the ree...

Embodiment 2

[0051] The walking board in this embodiment is prepared from the following components in parts by weight: 70 parts of continuous glass fiber, 30 parts of reinforcing mat, and 18 parts of polyurethane resin. Among them, the continuous glass fiber adopts alkali-free direct yarn with a number of 4400tex, the reinforcing mat is multi-axial cloth, the polyurethane resin is composed of isocyanate component A and polyether component B, and the mass ratio of component A to component B is 125 : 100.

[0052] This example was prepared using the following steps.

[0053] A. Place the continuous glass fiber on the creel of the yarn guide felt device, lead it out through the yarn guide hole, and pass through the preforming device, the glue injection box of the glue injection device, and the mold of the curing molding device in sequence according to the structure of the walking board , a hydraulic tractor that is introduced into the traction unit.

[0054] B. Place the reinforcing felt on...

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Abstract

The invention discloses a continuous glass fiber reinforced polyurethane composite material walking board and a preparation method thereof. The walking board comprises a horizontally arranged flat plate and a plurality of supporting ribs arranged below the flat plate; the supporting ribs are arranged in the length direction of the flat plate; the flat plate is made of an upper reinforced felt, a lower reinforced felt and polyurethane resin filled between the upper reinforced felt and the lower reinforced felt; the supporting ribs are formed by side reinforced felts positioned on two sides andpolyurethane resin positioned between the two side reinforced felts; continuous glass fibers are arranged in the polyurethane resin of the flat plate and the supporting ribs in the length direction ofthe flat plate in a penetrating manner; the walking board is produced by adopting a pultrusion molding process. The walking board prepared by adopting a continuous glass fiber reinforced polyurethanecomposite material and the pultrusion molding process has the characteristics of light weight, capability of being randomly drilled without cracking, convenience in mounting, excellent durability, prolonged service life, free maintenance and the like.

Description

technical field [0001] The invention relates to the technical field of auxiliary facilities used in railway bridge construction, in particular to a walking board. Background technique [0002] As an important part of the auxiliary facilities of the bridge deck, the walking slab is mainly used to provide working channels for operators to inspect or maintain, and can also provide channels for communication, signal and other cables. Therefore, walking boards must be strong, tough and durable, yet easy to install. At present, there are more concrete walking slabs and fiberglass composite walking slabs used in railway bridges. [0003] Among them, concrete walking slabs are widely used on both sides of railway bridges due to their low price and simple production. However, most of the concrete walking slabs are made on site, and their appearance, size and quality are highly discrete, and they are easy to break and fall off. It poses certain safety hazards to buildings and pedest...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08K7/14C08J5/04E01D19/00E01D19/10E01D19/12E01C15/00B29C70/52
CPCB29C70/521C08J5/043C08J2375/04C08K7/14E01C15/00E01D19/00E01D19/10E01D19/125
Inventor 刘志张勇张松琦郝林栓谢计华刘润钊刘彦光赵微微
Owner 铁科腾跃科技有限公司
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