What is the material of FRP pultrusion profile?

How large is the application range of FRP pultrusion profiles, which is a question that people are concerned about. According to statistics, FRP pultrusion various profiles can be used in various industrial sectors of the national economy. There are roughly the following aspects:

1. Electric shopping mall, which is the earliest shopping mall used in FRP pultrusion, the current successful development and use of commodities are: cable tray, ladder frame, bracket, insulated ladder, transformer barrier rod, motor slot wedge, street lamp post, electric railway third rail guard, optical fiber cable core material, etc.

Second, the chemical, anti-corrosion shopping mall, chemical anti-corrosion is a major user of FRP pultrusion profiles, the successful use of: FRP sucker rods, cooling tower supports, offshore oil production equipment channels, walking grilles, stair handrails and brackets, structural brackets in various chemical corrosion environments, water treatment plant covers, etc.

3. Spend the entertainment mall, which is a shopping mall with infinite potential, and the current development and use are: fishing rods, tent poles, umbrella skeletons, flagpoles, east and west handles, lamp posts, railings, handrails, stairs, radio antennas, yacht marinas, garden things and accessories.

Fourth, the construction of shopping malls, in the construction of shopping malls to squeeze FRP has entered the traditional materials of shopping malls, such as: doors and windows, concrete formwork, scaffolding, stair handrails, house partition wall panels, reinforcements, decoration materials, etc. It is worth noting that there will be a lot of room for growth in reinforcement materials and decoration materials.

Fifth, the road traffic shopping mall, the successful use of: highway on both sides of the barrier, road signs, pedestrian bridges, sound insulation walls, refrigerated truck components, etc.

6. Rural shopping malls, fences, greenhouse structures, supporting components, rattan sheds, water troughs, etc. The countryside is a potential big shopping mall, but the space for its development is restricted due to the ** elements.

The basic components of FRP pultrusion profile are resin and glass fiber, which is composed of fiber as reinforcing material, resin as crosslinking agent, and supplemented by other materials. It has a series of excellent characteristics such as high temperature resistance, corrosion resistance, high strength, small specific gravity, low moisture absorption, small elongation and good insulation.

Summary. FRP pultrusion profiles: National standard: FRP pultrusion profiles: Pap hardness 40--55, Pasteur hardness of molded products: 35--50, Pap hardness of hand lay-up products: 20--30

FRP pultrusion profiles: National standard: FRP pultrusion profiles: Pap hardness 40--55, Pasteur hardness of molded products: 35--50, Hand lay-up, digging tape, Bayu Hong, hardness, and Lu 20--30

The national standard for pultrusion profiles is not a Barcol hardness.

GB T 6892-2015 Aluminum and aluminum alloy extruded profiles for general industrial use. The specific situation of the standard is as follows: this standard stipulates the requirements, test methods, inspection rules and marks, packaging, bent transportation, storage and burial section of the general industrial aluminum and aluminum alloy extrusion profiles, and the content of the quality certificate and order form (or contract).

This standard applies to aluminum and aluminum alloy profiles for general industrial use.

Summary. The domestic standard for FRP pultrusion profiles is GB T 2918-2016 "Plastic Reinforced Extrusion Profiles". The standard stipulates the classification, requirements, test methods, inspection rules and signs, packaging, transportation and other aspects of FRP pultrusion profiles.

Specifically, the standard mainly stipulates the following aspects:1Classification:

According to different materials, FRP pultrusion profiles are divided into three categories: FRP reinforced profiles, FRP unreinforced profiles and other profiles. 2.Requirements:

Detailed requirements are put forward for the size, physical and mechanical properties, chemical properties, aging resistance, surface quality and other aspects of FRP pultrusion profiles.

The domestic standard for FRP pultrusion profiles is GB T 2918-2016 "Plastic Reinforced Extrusion Profiles". The standard stipulates the classification of FRP pultrusion profiles, the requirements of the stool covering, test methods, rough inspection rules and signs, packaging, transportation and other aspects. Specifically, the standard mainly stipulates the following aspects:

1.Classification: According to different materials, FRP pultrusion profiles are divided into three categories: FRP Xizhou reinforced profiles, FRP unreinforced profiles and other profiles.

2.Requirements: Detailed requirements are put forward for the size, physical and mechanical properties, chemical properties, aging resistance, surface quality and other aspects of FRP pultrusion profiles.

3.Test methods: including test methods for size, physical and mechanical properties, chemical properties, aging resistance and surface quality.

4.Inspection rules and pin liquid marking: The inspection rules and signs of FRP pultrusion profiles are explained.

5.Packaging and transportation of lost goods: the packaging and transportation of FRP pultrusion profiles have been standardized.

In general, the standard has comprehensive and detailed provisions on the collapsed FRP pultrusion profiles from multiple angles, which has high reference value.

This question is answered for you by the polyurethane pultrusion profile engineer of Yabu Machinery

Polyurethane pultrusion profiles are products formed by mixing polyols with a highly reactive isocyanate easily and quickly.

Isocyanates are selected to optimize pultrusion characteristics, which are: low viscosity (to ensure good impregnation of fibers), long gelling time (easy to start and stop), rapid polymerization (increased molding speed), good surface finish, and competitive cost.

Compared to other materials, pultrusion with polyurethane can yield a variety of benefits. It can increase the content of glass fiber in the product and greatly improve the strength of the product. For example, when glass fiber and polyurethane resin are pultruded, the resulting window frame is 8 times stronger than PVC window frame and 40 times less conductive than aluminum, resulting in much better insulation properties.

Polyurethane pultrusion profiles can be used in the pultrusion production of new polyurethane profiles, and the products can completely replace FRP pultrusion profiles, including polyurethane door and window profiles, bridges, trunking, polyurethane guide grooves, polyurethane pipes and other molded parts.

FRP pultrusion profiles are generally used in the manhole cover of environmental units, insulated cable trays of factories and mining units, conveying pipelines of chemical units, insulated protective fences, etc., including floors, etc., with obvious advantages, mainly corrosion resistance, insulation resistance, and lighter quality than steel; The strength is comparable to the strength of steel. There are many kinds of FRP pultrusion profiles, FRP round pipes, FRP square pipes, FRP rectangular pipes, FRP round bars, FRP I-beams.

FRP pultrusion profiles are often used in chemical processing plants, marine construction, food and beverage processing, petroleum smelting, paper industry, sewage treatment and transportation industries. FRP pultrusion profile high temperature resistance, FRP material has good high temperature resistance, FRP pultrusion profile products maximum use temperature of 330 degrees Celsius. The high temperature resistance is much better than that of other profile products.

FRP pultrusion profile products have good corrosion resistance. It is also not easy to corrode when used in corrosive environments.

FRP pultrusion profile has excellent corrosion resistance, can withstand different degrees of acid, alkali, organic solvents and salts and other gas and liquid media corrosion, never rust, according to the practical application of the medium type and temperature needs, there are o-benzene type, isobenzene type, vinyl type and so on for optional use.

The glass fiber content of pultrusion profile is higher than that of other composite molding technology, so the longitudinal strength is very high, which is equivalent to steel, and the density of pultrusion profile is only about a quarter of that of steel, so the specific strength is much higher than that of steel, and the modulus of pultrusion profile is lower than that of steel, generally only 1 7 - 1 10 of steel.

There are two main types: glass fiber and synthetic resin. Let's take a look at each of these two filling materials.

Glass fiber is an inorganic non-metallic material with excellent performance, with a wide range of advantages, such as good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength, but the disadvantage is brittleness and poor wear resistance. It is pyrophyllite, quartz sand, limestone, dolomite, boronite, boronite seven kinds of ores as raw materials through high-temperature melting, drawing, winding, weaving and other processes, usually used as a reinforcing material in composite materials. Includes:

Alkali-free roving: suitable for use in high strength requirements and highly corrosive environments, ** high; Medium alkali roving: lower than alkali-free coarse sand**, but lower strength, better acid resistance; High alkali roving:

Economical type, strength and corrosion resistance are more general.

There are two main categories of synthetic resins: thermoplastic resins and thermosetting resins, which are now widely used, and are also commonly referred to as this type of composite materials with thermosetting resin as the matrix material. Depending on the structural composition, this type of resin is divided into epoxy resin, phenolic resin, unsaturated polyester resin, and epoxy modified vinyl resin. Epoxy resins are mainly used in corrosion-resistant, high-strength fields, such as aerospace resins.

Phenolic resins are mainly used in the field of corrosion protection. Where: Phthalate type:

It is more economical and suitable for use in general acid-resistant and alkali-resistant environments; Isobenzene type: slightly more expensive than o-benzene type, excellent acid resistance, moderate alkali and solvent resistance; Vinyl type: suitable for use in acid, alkali solvent and other seriously corrosive environments, ** high; Phenolic type:

It is suitable for use in environments with high fire prevention and low smoke requirements.

The raw materials of FRP profiles are mainly reinforced materials such as glass fiber untwisted roving, sewing felt (or continuous felt, polyester felt), and thermosetting products compounded with matrix materials such as unsaturated polyester resin (or vinyl resin) by pultrusion molding equipment at high temperature.

It can be used as roof support, building guardrail, wall reinforcement grille, highway guardrail, etc.

Brief introduction of extruded FRP profiles.

Pultrusion is a kind of continuous production of FRP profile processing technology with equal cross-sectional shape and size, and its process is as follows: under the action of traction pressure generated by molding equipment, reinforcing materials (such as FRP fiber untwisted roving, FRP fiber continuous felt, etc.) are impregnated by matrix materials (such as unsaturated polyester resin, etc.) in accordance with a specific configuration form and are continuously cured by the mold system and in it, so as to continuously obtain FRP profiles with smooth surface, stable size and high strength.

Yes, FRP profiles can be designed with good designability and can be customized according to your needs.

Advantages of FRP profiles:

1. Anti-corrosion: It is not easy to be damaged when used in corrosive environments such as strong acids and alkalis.

2. Light weight: much lighter than metal products, more convenient for transportation and installation.

3. Good dimensional stability: under normal conditions, the dimensional stability is good, and the post-shrinkage that occurs after molding is also small.

4. High temperature resistance: Compared with other materials, the high temperature resistance of profile products is much better.

5. Anti-aging: durable and long-lasting.

6. It can be set up with strong credit shielding: profiles with different colors and slippery specifications can be formulated according to different customer needs.

Fiberglass reinforced plastic (FRP), also known as GFRP, is a fiber-reinforced plastic, which generally refers to the use of glass fiber-reinforced unsaturated polyester, epoxy resin, and phenolic resin matrix. Reinforced plastics that use glass fiber or its products as reinforcing materials are called glass fiber reinforced plastics or glass fiber reinforced plastics, which are different from tempered glass.

Due to the different types of resins used, there are differences between polyester FRP, epoxy FRP, and phenolic FRP. Light weight and hard, non-conductive, stable performance, high mechanical strength, low utilization and corrosion resistance. It can replace steel in the manufacture of mechanical parts, automobile and ship shells, etc.

In recent years, the application of FRP in landscape is also very extensive.