Transparent Granule ASA Plastic Resin For PVC Roofing Uv Resistant
ASA Plastic Granules Uv Resistant Plate Grade Extrusion Grade Raw Materials
Product Details
ASA resin is a two-phase structure composed of rubber phase and resin phase. The rubber phase is dispersed in the continuous resin phase in granular form to form an "island" structure. There are five layers of SAN grafts on the interface of the two phases.ASA resin is closely related to the two-phase structure. Continuous phase SAN resin plays a role in protecting the modulus, strength and glass transition temperature of the whole material.Dispersed-phase rubber can help disperse and absorb impact energy and improve toughness.Therefore, ASA resin greatly improved SAN toughness, but at the same time, its modulus and tensile strength
decreased little, and its heat resistance changed little.
The mechanism of rubber-enhanced SAN resin to improve impact strength is that due to the microplastic deformation of the resin, a stress concentration place is formed at the interface between SAN resin and rubber, resulting in "silver grain" to absorb impact energy.At the same time, due to the heat generated by the deformation of entropy of rubber, the relative Tg of the resin near the gum decreases, which promotes the generation of "silver grain".The lower Tg of colloidal phase in the resin is, the higher its impact strength will be. The acrylic rubber used in ASA resin has a higher Tg, but the modified acrylic rubber has a lower Tg and a higher impact strength.
Generally, the thermal deformation temperature of ASA resin is only about 85 degrees. In order to broaden its application range,especially in the automotive industry, the heat resistance of ASA resin must be improved.At present, the methods to improve the heat resistance of ASA include: 1. Copolymerization of ASA with a third monomer, such as A-methylstyrene; 2.3. NPMI and other heat-resistant modifiers were added to modify;4. Add glass fiber and other inorganic materials.
ASA resin has no double bond structure, which greatly improves its weather resistance, overcomes the shortcomings of ABS resin,such as the significant decrease in mechanical strength and the yellower color due to the decomposition of sunlight, etc.Since ASA
resin contains no carbon-carbon double bond, the dissociation energy of hydrogen on the main chain is 376KJ/mol, which is converted into a wavelength of less than 300nm. The image glue in ABS resin is believed to have a carbon-carbon double bond, and the dissociation energy of hydrogen at the double bond position is 163KJ/mol, which is converted into a wavelength of less than 700nm.It can be seen that only light waves with a wavelength of 300nm can have an aging effect on ASA, while the energy of solar energy is basically distributed above 290nm, so ASA resin has excellent weather resistance.
ASA resin has excellent mechanical properties, good thermal stability and significant weather resistance. Compared with ABS, ASA resin has better chemical resistance and environmental stress cracking resistance.Widely used in outdoor decoration materials, automobiles, electronics, daily necessities and outdoor sports equipment and other fields.
Application:
In recent years, PVC plastic doors and Windows because they have light weight, corrosion resistance, high strength, heat preservation, sealed sound insulation, energy conservation and environmental protection, as well as low cost characteristics, in the country has been widely popular and applied.Due to the unstable A-C1 in THE PVC molecular structure, pure PVC processing has poor weather resistance and is prone to yellowing and reddening caused by ultraviolet damage in the sun.Rutile type Tio2 has excellent light refraction effect. By adding a certain proportion of multi-rutile type Tio2, the uv effect can be blocked by refraction, so as to ensure that the material does not change color. In most buildings, single white plastic steel doors and Windows are adopted, which are somewhat monotonous in color.Similarly colorful glass tiles are increasingly popular objects of affection.Kumhu Rili has developed ASA XC190 products with multi-color, high weather resistance and suitable for extrusion. By co-extrusion
with PVC profiles, it not only improves the weather resistance of PVC, but also satisfies the weather pursuit in color.
2. Applications in automobiles and motorcycles
ASA has excellent weather resistance, even after a long time of sun and rain, it will not appear gray, and has excellent chemical resistance and environmental stress cracking resistance, and can withstand hot water treatment and detergent cleaning.Application in electronic and electrical engineering Satellite antenna open-air rotation, strong winds and changing climate can cause serious erosion of external antenna parts,inappropriate material will rust brittle, and kumho type high impact of the development of Japan Korea ASA XC220 has good
toughness and weatherability, can be applied to the mobile antenna, TV aerial parts, cable protection casing connection box,satellite electronic devices, etc.ASA XC220 can also be used in household durable equipment such as washing machine panels,refrigerator handles and sewing machines due to its excellent chemical resistance.
4. Application in outdoor equipment and sports equipment
ASA's unique weatherability, aging resistance, yellowing resistance, gasoline resistance and high gloss without paint are very useful for gardening irrigation equipment and gasoline powered lawnmower enclosures.ASA has stability and bright color, high mechanical strength, can reduce the impact and side impact daily, special acrylate rubber formula gives the ASA good chemical resistance, particularly of detergent and gasoline to resist, because of excellent weather resistance makes the ASA in harsh environment can keep a good usability for a long time, so in some sports equipment and leisure products has been widely used.
5. Alloy materials of ASA and their applications Similar to ABS, ASA can also be blended with a variety of thermoplastic materials to obtain excellent alloy materials.
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FAQ
Q: Are you trading company or manufacturer?
A: We are manufacturer. Our factory is founded in 2007, we have more than 14 year experience on PVC stabilizer manufacturing.
Q: Can i get some samples?
A: Yes, free samples(5-10 Kg)are available for most of our products, you only need to pay the shipping cost.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. Or it is 10-15 days if the goods are not in stock, it is according to quantity.
Q: What's your payment terms?
A: T/T or Irrevocable L/C.
Q: What documents you provide?
A: Usually, we provide Commercial Invoice, Packing List, Bill of loading, COA, if your markets have any special requirements, let us know.
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