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Glass reinforced plastic section material and preparation method thereof and cooling tower

A technology of FRP profiles and glass fibers, which is applied in the field of cooling towers, can solve the problems of insufficient FRP profiles, achieve low density, increase shear strength, and improve uniformity

Active Publication Date: 2016-10-12
南京斯贝尔复合材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still few FRP profiles suitable for the construction of cooling towers that meet the requirements of flame retardancy (flame propagation rate ≤ 25) and mechanical strength (the mechanical properties in the CTISTD-137-2013 standard), especially in China. It is found that there are FRP profiles that can meet the above requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Put 100kg of isophthalic unsaturated polyester resin with a viscosity of 420-450mpa·s into a mixing tank, add 50kg of aluminum hydroxide with a particle size of 10-15 microns, stir for about half an hour, and then add 2.6kg of demoulding agent, 2.6kg of low-shrinkage agent, 0.26kg of anti-UV agent, 2kg of pigment paste and stir for about half an hour to mix the mixture evenly, and let it stand for about 10 minutes to cool to room temperature; then add 1.1kg of peroxide curing agent, Stir for about 6 minutes to combine well to make the resin ingredient.

[0043] Insert glass fiber roving with a linear density of 4800tex into the hole of the preformed plate, and introduce a total of 3 layers on the corresponding felt guide with a weight per unit area of ​​850g / m 2 90° unidirectional cloth, and introduce a layer of 40g / m2 weight per unit area on the surface 2The polyester surface felt is used; the mold is heated in three sections, so that each zone is: 100°C in zone I; 14...

Embodiment 2

[0051] The technological process of present embodiment and embodiment 1 is identical, and the concrete kind of each raw material and mass percent are as follows:

[0052] Glass fiber roving, linear density 2400tex, 36%;

[0053] 90° unidirectional fabric, weight per unit area 650g / m 2 , 25%;

[0054] Polyester surface felt, weight per unit area 35g / m 2 , 0.2%;

[0055] Powdered aluminum hydroxide, 15-20 microns, 15%;

[0056] Isophthalic unsaturated polyester resin, viscosity is 300-350mPa·s, 22.15%;

[0057] The peroxide curing agent is specifically composed of benzoyl peroxide and tert-butyl peroxybenzoate, 0.2%;

[0058] The release agent specifically adopts zinc stearate, 0.5%;

[0059] Low shrinkage agent specifically adopts polyvinyl acetate, 0.5%;

[0060] The anti-UV agent specifically adopts salicylate, 0.05%;

[0061] Pigment paste, light gray, 0.4%.

[0062] Mold temperature: Zone I temperature 90°C, zone II temperature 125°C, zone III temperature 120°C; pu...

Embodiment 3

[0064] The technical process of this embodiment is the same as that of Embodiment 1, and the specific varieties and mass percentages of each raw material are as follows.

[0065] Glass fiber roving, linear density 9600tex, 35%;

[0066] 90° unidirectional fabric, weight per unit area 1050g / m 2 , 20%;

[0067] Polyester surface felt, weight per unit area 45g / m 2 , 0.8%;

[0068] Powdered aluminum hydroxide, 15-18 microns, 11.85%;

[0069] Isophthalic unsaturated polyester resin, viscosity is 750-800mPa·s, 30%;

[0070] The peroxide curing agent is specifically a compound of methyl ethyl ketone peroxide and tert-butyl peroxybenzoate, 0.3%;

[0071] The release agent is specifically phosphoric acid ester, 0.7%;

[0072] The low shrinkage agent is specifically polymethyl methacrylate, 0.7%;

[0073] The anti-UV agent specifically adopts benzophenones, 0.05%;

[0074] Pigment paste, dark gray, 0.6%.

[0075] Mold temperature: Zone I temperature 100°C, zone II temperature 1...

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Abstract

The invention discloses a glass reinforced plastic section material. The glass reinforced plastic section material is prepared from, by mass, 35-40% of glass fiber roving, 20-30% of 90-degree unidirectional cloth, 0.2-0.8% of polyester surface mat, 10-15% of powdery aluminum hydroxide, 20-30% of isophthalic unsaturated polyester resin, 0.2-0.3% of a peroxide curing agent, 0.5-0.7% of a release agent, 0.5-0.7% of a low shrinkage agent, 0.05-0.07% of an anti-ultraviolet agent and 0.4-0.6% of pigment paste, wherein the 90-degree unidirectional cloth is made by weaving of alkali-free glass fibers, and the proportions are based on mass of the glass reinforced plastic section material. The glass reinforced plastic section material meets the requirement that flame propagation rate is smaller than or equal to 25 according to ASTM E84-2009 Standard Test Method for Surface Burning Characteristics of Building Materials, and mechanical properties of the glass reinforced plastic section material meet standards of CTI STD-137-2013 Fiberglass Pultruded Structural Products for Use in Cooling Towers. The invention further discloses a production method of the glass reinforced plastic section material and a cooling tower manufactured with the glass reinforced plastic section material.

Description

technical field [0001] The invention relates to a glass steel profile, a preparation method thereof, and a cooling tower made of the glass steel profile. technical background [0002] During the operation of the cooling tower, the structural materials used must withstand various environments, including chemical, biological attack and other harsh environments. The pultruded glass fiber reinforced plastic (hereinafter referred to as GFRP) profile has light weight and strong corrosion resistance. and high production efficiency. Therefore, in the selection of materials for the construction of cooling towers, pultruded FRP profiles have obvious advantages over wood, concrete and steel. However, there are still few FRP profiles suitable for the construction of cooling towers that meet the requirements of flame retardancy (flame propagation rate ≤ 25) and mechanical strength (the mechanical properties in the CTISTD-137-2013 standard), especially in China. It is found that there a...

Claims

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Application Information

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IPC IPC(8): C08L67/06C08L67/00C08L23/06C08L31/04C08L33/12C08L25/06C08K13/04C08K7/14C08K3/22B29C70/52
CPCB29C70/52C08K2201/003C08K2201/014C08L67/06C08L2201/02C08L2205/02C08L2205/03C08L2205/16C08L67/00C08L23/06C08K13/04C08K7/14C08K5/14C08K2003/2227C08L31/04C08L33/12C08L25/06
Inventor 刘国祥杨德兴吕永安
Owner 南京斯贝尔复合材料有限责任公司
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