2results about How to "Improve long-term durability" patented technology

This invention relates to the field of grouting technology, specifically disclosing an adaptive micro-expansion organic-inorganic hybrid grouting and sealing material and its preparation method, which consists of two components, A and B: Component A is a pumpable viscous liquid, comprising the following components by weight: 90-110 parts of castor oil-based polyurethane prepolymer, 5-15 parts of sulfonate-modified nano-montmorillonite, 8-15 parts of plasticizer, and 3-8 parts of functional nanofibers; Component B is a free-flowing solid powder, which is a microencapsulated water-based curing agent, used in an amount of 10-30 parts by weight. This invention utilizes the ordered interlayer water absorption characteristics of sulfonate-modified nano-montmorillonite to achieve mild and controllable micro-expansion upon contact with water, effectively overcoming the risks of excessive internal stress and structural damage caused by the violent and uncontrollable foaming of traditional hydrophilic materials, ensuring the safety and effectiveness of filling in a closed base plate environment.

Provided are a polishing pad and a method of manufacturing a semiconductor device using the same, the polishing pad having a structure that maximizes a water leakage prevention effect, including: a polishing layer including a first surface and a second surface, and a first through-hole passing through the first surface to the second surface; a window disposed in the first through-hole; and a support layer disposed on the second surface side of the polishing layer, including a third surface and a fourth surface, and a second through-hole passing through the third surface to the fourth surface while being connected to the first through-hole, the second through-hole being smaller than the first through-hole, a lowermost end surface of the window being supported by the third surface, a first adhesive layer being included between the lowermost end surface of the window and the third surface, a second adhesive layer being included between the second surface and the third surface and between the lowermost end surface of the window and the third surface, a barrier layer being included on one surface of the second adhesive layer, and the support layer including a compression portion in a region corresponding to the lowermost end surface of the window.