Shanghai Na Long Tech Co., Ltd

high performance engineering fiber; Polyvinyl alcohol fiber; PVA fiber for concrete; PVA fiber for UHPC; PVA fiber for cement fiber board

Owing to high tensile strength and high modulus of elasticity, PVA fiber is considered as high performance engineering fiber for construction use. For high performance concrete esp. UHPC, or big volume concrete, PVA fiber plays a very important role. PVA fiber is an idea fiber to substitute outdated asbestos fiber in cement fiber board.

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  • 05-21,2022
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    This product is a biodegradable and hydrolyzed polyvinyl alcohol (PVA) film with higher strength than polyethylene (PE) film and good transparency. Its characteristics, strong water absorption, can be completely degraded in water or soil, no pollution to the environment, the membrane is not static, does not vacuum, good printing performance, good resistance to oil and chemical substances, breathable and oxygen, can play Preservative preservation. Can be used for high-end clothing packaging; can be combined with polyethylene or polypropylene film production of food packaging bags; and paper...

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  • 05-13,2022
    Polyvinyl alcohol (PVA) drying
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    Vinyl acetate is polymerized to form polyvinyl acetate. The polymer can be saponified to give various grades of flocculent, flake, granular, and powdery polyvinyl alcohol with 99.9% and 88% alcohol solvency under different amounts of alkali. The polyvinyl alcohol solution has good film-forming properties. Emulsification. Polyvinyl alcohol is mainly used for the production of synthetic fibers, plastics, adhesives, coatings, new building materials, etc., and is widely used in the chemical industry, textile, printing and papermaking, tanning industry, construction and so on. During the...

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  • 05-06,2022
    Expansion agent usage method Expansion agent type
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    With the continuous increase in the amount of concrete expansive agent, poor application and failure of use have occurred from time to time, and quality accidents causing leakage and cracking of concrete structures are also commonplace. As a result, some people have expressed doubts about the compensatory shrinkage of concrete expansive agents. Some people even refused to use the project. The following small series introduces the expansion agent usage method and expansion agent type. Expansion agent use method 1. Scientifically and reasonably select the amount of expansion agent, and the...

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