FGHFJ65

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27-09-21

3 Látták





Why is fiberglass mesh needed?

Composite sheets of fiberglass mesh for marble reinforced polycarbonate were prepared by hot compress molding. The effects of lay-up structure, lay-up angle, area density of fiberglass mesh and the thickness of PC film on tensile property were studied. The results reveal that the alternative lay-up structure of reinforcement mesh and matrix film is optimal and tensile property declines as lay-up angle increases. Fiberglass mesh with lower area density is appropriate for thinner composites. Composite sheets fabricated with thinner PC film show better tensile property. SEM analysis shows that alternative lay-up structure is favorable to the immersion of the fiber bundle of marble mesh cloth with low area density in the melting matrix, and thus the improvement of tensile property.

This paper investigates the effect of surface treatment for glass fiber, stainless steel wire mesh on tensile, flexural, inter-laminar shear and impact properties of glass fiber/stainless steel wire mesh reinforced epoxy hybrid composites. The glass fiber fabric is surface treated either by 1 N solution of sulfuric acid or 1 N solution of sodium hydroxide. The stainless steel wire mesh is also surface treated by either electro dissolution or sand blasting. The hybrid composites are fabricated using epoxy resin reinforced with glass fiber and fine stainless steel wire mesh by hand lay-up technique at room temperature. The hybrid composite consisting of acid treated glass fiber and sand blasted stainless steel wire mesh exhibits a good combination of tensile, flexural, inter-laminar shear and impact behavior in comparison with the composites made without any surface treatment. The fine morphological modifications made on the surface of the glass fiber and stainless steel wire mesh enhances the bonding between the resin and reinforcement which inturn improved the tensile, flexural, inter- laminar shear and impact properties.


The fiberglass mesh filter is an inorganic non-metallic material with excellent performance. It has a wide variety of advantages. The advantages are good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength, but its disadvantages are brittleness and poor wear resistance. It is made of glass balls or waste glass as raw materials through high-temperature melting, drawing, winding, weaving, and other processes. In this article, we will take a closer look at the characteristics and types of fiberglass mesh filters. 


Characteristics of Fiberglass Mesh Filters


The filter has high tensile strength and low elongation (3%).


The filter has a high elastic coefficient and good rigidity.


The filter has large elongation within the elastic limit and high tensile strength, so it can absorb impact energy.


The filter is made of inorganic fiber, which is non-flammable and has good chemical resistance.


Its water absorption is small.


High-temperature resistance.


High filtration efficiency.


Types of Fiberglass Mesh Filters


ULPA(Ultra Low Penetration Air) Filter


ULPA (Ultra Low Penetration Air) filter has a filtration efficiency of more than 99.999% for 0.1~0.2μm particles, smoke and microbes, and other dust particles. 

ULPA filter characteristics: Its filter element is made of ultra-fine glass fiber filter material by gluing and folding. The outer frame can be made of laminated wood, galvanized copper, stainless steel, and aluminum alloy, and it is tightly bonded by polyurethane glue. It has the characteristics of lightweight, large air permeability, dust collection rate as high as 99.95-99.999%, and alkali resistance, and high-temperature resistance.

ULPA filter applications: It is suitable for class 10000-100 clean systems, air conditioning systems, so the product has been widely used in electronics, microelectronics, semiconductors, optical devices, biological and medical circuits, cameras, and optical instruments, precision machinery, and other fields.

High-Temperature Air Filter


The high-temperature air filter still has a partition structure. It is assembled with high-temperature resistant glass fiber or ultra-fine glass fiber filter paper, aluminum foil partition, stainless steel frame, and special high-temperature resistant sealant. 

High-temperature air filters are mainly used in ultra-clean ovens that require drying in the production process of food, pharmaceuticals, etc., or high-temperature air purification equipment and systems. The maximum working temperature is 350 degrees.

High Humidity Resistant Air Filter


The high-humidity air filter has a partition structure, using special moisture-proof ultra-fine glass fiber filter paper, special rubber sheet or aluminum foil partition, galvanized sheet, or aluminum alloy profile frame. It is suitable for high humidity under normal temperature and pressure, especially in high humidity environments such as infusion production in the pharmaceutical industry. The maximum working humidity is 100%.

The Disadvantage of Fiberglass Mesh Filters


Due to the poor ductility of glass fiber, the glass fiber filter is easily damaged, so be careful when installing it.


Conclusion 


Thank you for reading our article and we hope it can help you to have a better understanding of the characteristics and types of marble fiberglass cloth. If you want to learn more about fiberglass mesh filters, we would like to advise you to visit Stanford Advanced Materials (SAM) for more information. 


As a leading supplier of fiberglass mesh filters across the world, SAM enjoys over two decades of experience in the manufacture and sale of fiberglass mesh filters, offering customers high-quality fiberglass mesh filters to meet their R&D and production needs. As such, we are confident that SAM will be your favorite fiberglass mesh filter supplier and business partner.


Fiberglass mesh is a neatly woven, crisscross pattern of fiberglass thread that is used to create new products such as tape and filters. When it is used as a filter, it is not uncommon for the manufacturer to spray a PVC coating to make it stronger and last longer. The most common place to find fiberglass mesh is in tape products.


Sheetrock finishers use the mesh frequently. In fact, it is common to replace the paper tape used to float the joint between two pieces of sheetrock. The mesh that sheetrock finishers use comes on a roll just like paper sheetrock tape. The added benefit for the sheetrock finisher is to roll out the mesh over a great distance before having to apply the first coat of joint compound. Not only does it help them in this manner, but it also causes a stronger bond between the joint compound, the tape and the wall.


Sheetrock finisher's also use this tape to patch holes. The most common hole in the sheetrock generally occurs where a doorknob has hit a wall too many times. If it is only slightly damaged, a couple of short pieces of the tape will be formed into a square and placed over the hole. A joint compound will then be applied directly to it. If the hole is too large to patch with fibreglass mesh for wall alone, a piece of metal flashing can be added behind the tape before applying joint compound. Construction work is not the only use for fiberglass mesh.


As a filtering system, fiberglass mesh works really well. As the water flows through it, the mesh catches even the smallest impurities. In addition to this use, it can also be used as a mosquito net.


Finally, fiberglass mesh is sometimes woven into protective clothing used by those who work with dangerous chemicals or firefighters. Tightly woven mesh is put together and shaped into jackets that firemen wear when they are battling a blaze. It protects them from any fire that might ignite their clothing while fighting a fire. Fiberglass mesh can also be used in mold making and as protection against corrosives.


In your letter dated January 31, 2008, on behalf of your client, SpiderLath, Inc., you requested a tariff classification ruling on a woven fiberglass article. A sample of a piece of the material comprising this product was submitted with your ruling request.   


The subject article, identified as “SpiderLath”, is a woven fiberglass mesh/fiberglass lath system with ethylene vinylacetate (EVA) backing strips that will be imported in rolls 4 feet wide by 75 feet long. You indicated in a telephone conversation that the fiberglass mesh is coated with a stiffener.

According to the information that was submitted with your ruling, the fiberglass mesh/fiberglass lath system is used as a cladding masonry support. The product can be used to install stucco and stone veneer. It can also be used over existing surfaces to apply masonry finishes.


In your presentation, you suggest classification under subheading 7019.31.0000, Harmonized Tariff Schedule of the United States (HTSUS), which provides for glass fibers (including glass wool) and articles thereof...thin sheets (voiles), webs, mats, mattresses, boards and similar nonwoven articles: mats. This subheading does not apply since the product is a woven article.


The applicable subheading for the woven fiberglass mesh for construction/fiberglass lath system with EVA backing strips will be 7019.90.1000, HTSUS, which provides for glass fibers (including glass wool) and articles thereof (for example, yarn, woven fabrics (con.): other: woven. The rate of duty will be 4.8 percent ad valorem.

Duty rates are provided for your convenience and are subject to change. The text of the most recent HTSUS and the accompanying duty rates are provided on World Wide Web at http://www.usitc.gov/tata/hts/.


This ruling is being issued under the provisions of Part 177 of the Customs Regulations (19 C.F.R. 177).


A copy of the ruling or the control number indicated above should be provided with the entry documents filed at the time this merchandise is imported. If you have any questions regarding the ruling, contact National Import Specialist Jacob Bunin at 646-733-3027.






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