jinjiudingFrp

Sep 25, 2009 at 03:17 o\clock

Fiberglass fabric

by: jinjiudingfrp   Keywords: Fiberglass, fabric

Process Unidirectional fabric
Fiberglass  fabric is the product combining the roving in certain angel of 0 ℃ or 90 ℃ with polyester yarn.


Properties
• Fiber straight arranged, fiber strength be ultimately used.
• No powder or emulsion, sink quickly, easy to operate.
• Easy to design, high strength in one direction.


Applications
Mainly be used as reinforced materials in the composite material industry.
• Matrix: unsaturated polyester resin, vinyl ester resin, epoxy resin and phenolic resin etc.
• Craft: winding, pultrusion, hand lay up, etc.
• Ultimate products: storage tank, tube, pultruded profiles, FRP body of boat, etc.

Specifications 

 

specifications

Fibre type

0°Roving

90°Roving

Overall weight

Width

（g/㎡）

（g/㎡）

（g/㎡）

（mm）

EDW227

E-Glass

—

227

227

1524

EDW350

E-Glass

—

350

350

1524

EDW450

E-Glass

—

450

450

1524

EDJ600

E-Glass

480

120

600

1524

EDJ800

E-Glass

600

200

800

1524

EDJ1000

E-Glass

600

400

1000

1524

Packaging:  Wrapped in PVC and placed within a cardboard carton.

 

Sep 25, 2009 at 03:12 o\clock

Fiberglass Mat

by: jinjiudingfrp   Keywords: Fiberglass, Mat

Chopped strand mat is very economical and offers good stiffness. However, for greater strength
and a lower weight product biaxials and woven cloth fabrics are generally used.
All the following mats are compatible for use with polyester resins and vinyl ester resin.

Useful Tips

-The individual fibers that make up chopped strand mat is held together by an adhesive binder that is designed to break down in polyester and vinyl ester resins.

How Much Resin Do I Need?

-Fiberglass mat requires approximately 1-1/2 to 2 times its own weight in resin for complete saturation.(example: 1LB of mat needs 1-1/2 to 2 LBS of resin). Most resins weigh about 9-1/2 LBS per gallon.

Process
Fiberglass mat is the mat combining the woven roving and a even layer of chopped strand mat with polyester yarn.


Properties
• Fiber level unfolded without cross, high density, high utilizing rate.
• Multi-layer finished one time, decrease layer and enhance efficiency.
• Providing the product with multi-directional mechanical strength.

Applications
Mainly be used as reinforced materials in the composite material industry.
• Matrix: unsaturated polyester resin, vinyl ester resin, epoxy resin and phenolic resin etc.
• Craft: pultrusion, RTM, hand lay up, etc.
• Ultimate products: pultruded profiles, FRP body of boat, insulation board, automobile body.

Sep 17, 2009 at 08:31 o\clock

What is FRP?

by: jinjiudingfrp   Keywords: FRP, profiles

FRP (Fiber Reinforced Plastics) or fiber-reinforced plastic, generally refers to glass fiber reinforced unsaturated polyester, epoxy and phenolic resin matrix, commonly known as glass fiber reinforced plastic.
1. What is FRP?
FRP profiles is a kind of plastic, is to use glass fiber reinforced plastic, FRP can be expressed in English letters. Plastics, literally speaking, refers to the plasticity of the material, is now generally refers to man-made plastic, that is made from resin with various additives, if the resin does not add any additives can not be referred to as plastic, can only be called a resin. Of thermoplastic and thermoset resin because of the points, so plastics are also divided into two kinds of thermoplastic and thermoset. If you go with glass fiber reinforced thermoplastics, can be called thermoplastic glass fiber reinforced plastic: If you use glass fiber reinforced thermosetting plastic, glass fiber reinforced plastic called thermosetting. The current production of glass fiber reinforced plastic in terms of mainly refers to thermosetting. From the point of view of use of materials, FRP is a composite material, if the composite structure from its own point of view, the FRP also may be regarded as a structure.
2, FRP What are the characteristics and shortcomings?
Answer: FRP has the following characteristics.
(1) light strength
The relative density between 1.5 to 2.0, only the carbon steel 1 / 4 to 1 / 5, but the tensile strength is close, even more than carbon steel, while the specific strength compared with high alloy steel. Therefore, in aviation, rocket, spacecraft, high-pressure vessel and the need to reduce the weight of the products of other applications, all with outstanding results. Some epoxy FRP tensile, bending and compression strength can reach more than 400Mpa. Note: The specific strength that the strength divided by density.
(2) good corrosion resistance
FRP profiles is a good corrosion-resistant materials, air, water, and in general the concentration of acid, alkali, salt, and a variety of oils and solvents have a better resistance to diseases. Has been applied to all aspects of chemical corrosion, is being replaced by carbon steel, stainless steel, wood, non-ferrous metals.
(3) The electrical properties of a good
Is an excellent insulating material used to make insulation. Still well under the protection of high-frequency dielectric properties. Microwave transmitted through sexual well and has been widely used in radar antenna cover.
(4) good thermal performance
FRP low thermal conductivity at room temperature for 1.25 ~ 1.67kJ / (m · h · K), only the metal 1 / 100 ~ 1 / 1000, is an excellent insulation material. In the transient ultra-high temperature case, is ideal for thermal protection and anti-ablative materials to protect spacecraft at 2000 ℃ high-speed airflow over to withstand erosion.
(5) can be designed to good
① may be needed, the flexibility to design a variety of structured products to meet the application requirements, you can make the product a very good overall.
② full selection of materials to meet product performance, such as: you can design a corrosion-resistant, and resistant to transient high temperature, the product of a direction of a special high-strength, dielectric and good, and so on.
(6) process of fine
① according to the product shape, technical requirements, uses and the flexibility to select the number of molding process.
② process is simple, can be a shape, highlight the economic effects, especially for complex shape, a small number of easily forming the product, but also highlight the superiority of its technology.
Can not ask a FRP to meet all the requirements, FRP is not a panacea, FRP also has the following shortcomings.
(1) the low elastic modulus
FRP elastic modulus ratio of timber twice as large, but lower than steel (E = 2.1 × 106) of small 10-fold, and therefore less rigid product structure are frequently and easily deformed.
Can be made of shell structures, sandwich structure, but also through high-modulus fibers or do to strengthen tendons and other forms to cover.
(2) poor long-term temperature resistance
FRP can not generally long-term use at high temperatures, common polyester FRP profiles strength at 50 ℃ for more than a significant decline, it is generally at 100 ℃ for the following use; general-purpose epoxy FRP at 60 ℃ or above, the intensity decreased significantly. But you can choose high-temperature resin, and make long-term working temperature 200 ~ 300 ℃ is possible.
(3) aging
The aging phenomenon is a common defect of plastic, FRP is no exception, in the ultraviolet light, wind rain and snow yarn, chemical medium, under mechanical stress, etc. may easily lead to performance degradation.
(4) The interlaminar shear strength of low -
Interlaminar shear strength is borne by resin, so very low. Selection process through the use of coupling agents and other methods to increase the cohesive force between layers, most notably in the product design, try to avoid the shear layer.
3, FRP What are the methods of production?
A: Basically, two broad categories, namely wet and dry-contact pressure forming. According to process characteristics, such as points, there are hand lay-up molding, lamination molding, RTM method, squeeze Rafah, compression molding, winding and so on. Hand lay-up also includes hand lay-up method, bag pressure method, injection method, the wet paste method and non-low-pressure mold hand lay-up method.
Currently the world's most widely used methods are the following four types of molding.
① hand lay-up method: The main use of state are Norway, Japan, Britain, Denmark.
② injection method: The main use of state from Sweden, the United States and Norway.
③ molded law: mainly in Germany and other countries.
④ FTM France: The main use of state are European and American countries and Japan.
China has more than 90% of the FRP products are hand lay-up method of production, and other molding method, winding method, laminating method, etc. (see chapter XI). Japan's hand lay-up method still accounts for 50%. From the world point of view, a considerable percentage of hand lay-up method still shows that it still has vitality. Hand lay-up method is characterized by wet resin molding, simple equipment, cost less, one can paste more than 10m overall product. The disadvantage is that the low level of mechanization, the production cycle is long, inconsistent quality. In recent years, China has introduced from abroad squeeze pulling, spraying, winding and other process equipment, with the FRP industrial development, new process methods will continue to appear

Sep 17, 2009 at 08:20 o\clock

FRP pultruded profiles

by: jinjiudingfrp   Keywords: FRP, pultruded, profiles

FRP pultruded profiles are increasing being used in a variety of applications. With the high strength, low weight, non-corrosive features, fiber reinforced polymer (FRP) materials are rapidly growing in demand.

The manufacturing of FRP pultruded profiles is the most efficient method of forming composite materials with consistent high quality and low scrap.

Nanjing Jinjiuding Composite Material Co., LTD  is here to help the world find all FRP pultruded profiles and Fiberglass knitting fabric  available. Fiberglass knitting fabric includes fiberglass stitch chopped strand mats, fiberglass combo mats, fiberglass unidirectional fabric. They have been widely used in FRP boat, transportation tube, chemical storage tank, automobile body, wind energy, FRP pultruded profiles and etc.