What is the composite resin matrix?
In composite materials, the role of the matrix is to support the fibers and glue them together, as well as maintain the direction and position of the fibers. A good matrix material can transmit as much external load as possible to the fibers. The matrix also determines the environmental resistance and maximum service temperature of the composite material.
What is the impact of excessive addition of curing agent on the heat resistance of the resin?
Excessive addition of curing agents may have a negative impact on the heat resistance of the resin, including the following aspects: 1.Increased tendency for thermal decomposition: Excessive curing agent may lead to an increase in the thermal decomposition tendency of the resin. Excessive curing
What is the impact of excessive addition of curing agent on the mechanical properties of the resin?
Excessive addition of curing agents may have a negative impact on the mechanical properties of the resin, including the following aspects: 1.Increased brittleness: Excessive curing agent can make the resin more brittle. Overcuring causes the molecular network structure of the resin to be too tight and rigid, reducing its energy absorption and deformation ability, making the resin more prone to fracture or fragmentation, thereby increasing its brittleness.
What is the effect of excessive curing agent on the weather resistance of the resin?
Excessive addition of curing agents usually does not directly affect the weather resistance of the resin, as the weather resistance mainly depends on the chemical structure of the resin itself and the addition of weather modifying agents such as ultraviolet absorbers and antioxidants. However, excessive addition of curing agents may have an indirect impact on the weather resistance of the resin, as shown below:
Do special materials need to be used for coating repair of fiberglass storage tanks?
The coating repair of fiberglass storage tanks usually requires the use of special materials to ensure that the repaired coating can adhere well to the original coating and provide sufficient protection. Here are some commonly used special materials: Fiberglass repair adhesive: Fiberglass repair adhesive is a material specifically used to repair surface damage to fiberglass. It is usually a two component system consisting of resin and curing agent. Repair adhesive can fi
Typical fiberglass mold structure
A typical fiberglass mold structure typically consists of three parts: 1.Surface layer: Vinyl gel coating; 2.Transition layer: Vinyl resin (surface felt as reinforcement); 3.Structural layer: Vinyl resin, zero shrinkage resin, or unsaturated, or even polyester resin;
What is the composite resin matrix?
What is the composite resin matrix? In composite materials, the role of the matrix is to support the fibers and glue them together, as well as maintain the direction and position of the fibers. A good matrix material can transmit as much external load as possible to the fibers. The matrix also determines the environmental resistance and maximum service temperature of the composite material.
Glass fiber fabrics have many unique and outstanding properties, and provide design opportunities for improving existing products and developing new, lightweight, and cost-effective composite material products. Simply put, glass fiber has the following excellent properties: Chemical resistance Inorganic glass fiber textile fibers do not decay, mold, or deteriorate. In addition to hydrofluoric acid and hot phosphoric acid, they can also res
The role of accelerators in unsaturated resin formulations
The role of accelerators in unsaturated resin formulations 1. The Function and Mechanism of Accelerators Accelerator is an additive in unsaturated resin formulations, mainly aimed at improving the performance of unsaturated resins, increasing curing speed and hardness, and improving the heat resistance and chemical stability of
Why is it called fiberglass when it is clearly plastic? What kind of material is fiberglass
Attention everyone, this type of pipe in the figure below is made of fiberglass material. Upon hearing about fiberglass, I thought it was a new type of steel, but it wasn't. Fiberglass reinforced plastic is a composite material, essentially a plastic, but unlike ordinary plastics, it is a fiber-reinforced plastic.
What if epoxy resin does not cure?
What if epoxy resin does not cure? First of all, would you like to confirm where the problem lies? Is the amount of curing agent added accurate? What is the curing temperature of epoxy resin? Pay attention to the substrate temperature, not the ambient temperature?
What is the difference between 191 resin and 196 resin?
What is the difference between 191 resin and 196 resin? 191 resin and 196 resin are both ortho benzene unsaturated resins, which are common polyester resins in the fiberglass industry and the most cost-effective conventional grades.
What is the temperature resistance of vinyl resin?
What is the temperature resistance of vinyl resin? I can answer you this! Generally speaking, the typical thermal deformation temperature of vinyl resin adhesive is around 105-110 ℃. For example, the thermal deformation temperature of 470 vinyl resin is 150 ℃, and for higher 470HD vinyl resin, the thermal deformation temperature can reach 220 ℃.
Is there a distinction between soft and hard fiberglass chopped felt?
Is there a distinction between soft and hard fiberglass chopped felt? Yes, there is indeed a difference in the softness and hardness of glass fiber short cut felt, because the surface treatment agents of glass fiber are different. As an old fiberglass, I generally prefer a soft and short cut felt, which makes it easier to cover the mold and corner positions. This is a contradiction point, and a softer one will mean that t
The difference between gel coat resin and ordinary resin
The difference between gel coat resin and ordinary resin: 1. The concept of gel coat resin and ordinary resin Gel coat resin and ordinary resin are both organic polymer compounds and are commonly used synthetic materials. They have many similarities, but there are significant differences in raw materials, characteristics, and uses.
Can talcum powder be added to the marine gel coat for thickening?
Can talcum powder be added to the marine gel coat for thickening? No, because the gel coat has long-term contact with seawater. When talcum powder is used as a thickener, it will increase the water absorption of the repair area and reduce the seawater permeability resistance. At the same time, excessive talcum powder may ex
Tips for using heat-resistant epoxy resin
As mentioned earlier, to achieve the best results, please always follow the provided instructions correctly. Any deviation will not produce the expected results. Based on your project, only mix the amount you need so that you can work effectively within the required time. Preparation is crucial, as time is crucial in this process. Have a workbench of appropriate height to avoid any back pain. Before starting, apply some isopropanol to
Common defects in fiberglass resin coating
one Voids, bubbles Cause of occurrence: Incorrect layering method, insufficient understanding of product quality, improper handling of corner parts, poor felting mold adhesion, poor layering technology, and unfavorable mold placement direction for layering; Insufficient light makes it di
What is the effect of adding too much gel coat curing agent?
Too much gel coat curing agent may have some impact on the construction quality, which will accelerate the gel coat gel time, which means that the gel coat pinhole/bubble rate increases, but there is no curing when it reaches a certain extent, and the transaction after curing is brittle and can be peeled off. Including:
Market Development and Future Forecast of China's Epoxy Resin Industry in 2023
According to the "Market Research and Investment Evaluation Report on China's Epoxy Resin Industry (2023 Edition)" released by Limu Information Consulting, epoxy resin is a type of oligomer with two or more epoxy groups in its molecules, which can be used in combination with various curing agents such as amines, imidazoles, anhydride, phenolic resin, etc. to form a three-dimensional network cured product.
What are the advantages of vacuum resin introduction process?
Vacuum resin introduction process is a low-cost manufacturing process developed in the past 20 years, especially suitable for the manufacturing of large products. Its advantages are as follows: (1) The product has excellent performance and high yield. Compared with hand laid components, the strength, stiffness, and other physical pr
Ten major applications of vinyl ester resin
Vinyl resin is a type of modified epoxy resin obtained by reacting bisphenol or phenolic epoxy resin with methacrylic acid. It is commonly referred to as vinyl ester resin (VE), also known as epoxy acrylic resin, and is a thermosetting resin. Vinyl ester resin has the excellent properties of epoxy resin, with better curing and formability. It can dissolve in styrene and acrylic monome
A Little Knowledge about Yacht Materials
Before the late 1940s, almost all leisure boats were built from wood. Without careful and sustained maintenance, these yachts often leak, rot, and even disintegrate.
Selection method of mold gel coat
Performance requirements of RTM/LRTM process for gel coats The RTM/LRTM process is a FRP molding process developed on the basis of hand layup technology and widely used. It has been promoted as early as 30 years ago, but due to the level of mold production and material matching, it has only been fully applied in recent years.
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