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Introduction to the UV-CIPP (Ultraviolet Light-Cured In-Place Pipe Repair) Process

Introduction to the UV-CIPP (Ultraviolet Light-Cured In-Place Pipe Repair) Process

After years of operation, various pipelines inevitably suffer from damage and leaks due to factors such as corrosion and poor operational management, leading to significant economic losses. However, replacing the entire pipeline with new ones would not only involve an enormous amount of work but also be costly and time-consuming. Consequently, how to restore pipeline safety efficiently, economically, and quickly has attracted great attention both domestically and internationally. Therefore, research into pipeline repair technologies is of paramount importance.

05

2016

/

08

Potting of Smidahk

Potting of Smidahk

Encapsulating sealants are used for bonding, sealing, potting, and coating protection of electronic components. Before curing, they exist in a liquid state and exhibit fluidity. The viscosity of the sealant varies depending on the material, performance requirements, and manufacturing process of the product. Encapsulation involves mechanically or manually pouring the liquid composite into devices containing electronic components and circuits, where it cures under ambient or heated conditions to form an excellent thermosetting polymer insulating material with superior performance.

26

2016

/

07

Classification and Properties of Engineering Plastics

Classification and Properties of Engineering Plastics

Engineering plastics can be further divided into two categories: general-purpose engineering plastics and special-purpose engineering plastics. The former mainly includes five major types of general-purpose engineering plastics: polyamides, polycarbonates, polyformaldehydes, modified polyphenylene ethers, and thermoplastic polyesters. The latter refers primarily to engineering plastics that can withstand temperatures above 150°C; the main varieties include polyimides, polyphenylene sulfides, polysulfones, aromatic polyamides, polyarylates, polybenzoates, polyaryletherketones, liquid-crystal polymers, and fluoropolymers.

14

2016

/

07

General-purpose plastics—what do you know about them?

General-purpose plastics—what do you know about them?

Plastics that feature high production volumes, low prices, wide-ranging applications, and broad societal impact are commonly referred to as "general-purpose plastics." The specific definition of these plastics often evolves with the times and advances in science and technology. The main general-purpose plastics include polyethylene, polypropylene, polyvinyl chloride, polystyrene, ABS (acrylonitrile-butadiene-styrene), polymethyl methacrylate, and amino plastics. These plastics account for more than 90% of total plastic production, which is why they are also known as "bulk plastics."

09

2016

/

07

A Practical Reference Table Worth Collecting (Part 1): Conversion Table for Various Viscosity Standards

A Practical Reference Table Worth Collecting (Part 1): Conversion Table for Various Viscosity Standards

A table for converting various viscosity standards and an introduction to viscosity units.

28

2016

/

06

Anaerobic adhesive

Anaerobic adhesive

Anaerobic adhesive, often referred to simply as anaerobe, is also known as oxygen-impermeable adhesive, anaerobic sealant, threadlocker, or mechanical adhesive. It is a single-component sealing and bonding agent formulated based on the principle of oxygen-induced radical inhibition. It can be used both for bonding and for sealing. When the coated surface is isolated from air and subjected to catalysis, the adhesive rapidly polymerizes and cures at room temperature. The term "anaerobic" refers to the fact that this adhesive does not require oxygen during use.

22

2016

/

06

Pressure Sensitive Adhesive

Pressure Sensitive Adhesive

Pressure-sensitive adhesive, often abbreviated as PSA, is a type of adhesive that exhibits sensitivity to pressure. It is primarily used in the manufacture of pressure-sensitive tapes.

17

2016

/

06

PCB Manufacturing Process and Overview of PCB Ink Composition

PCB Manufacturing Process and Overview of PCB Ink Composition

A PCB (Printed Circuit Board), known in Chinese as a printed circuit board or printed wiring board, is an essential electronic component. Because it is manufactured using electronic printing technology, it is referred to as a “printed” circuit board.

14

2016

/

06

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