アミノシラン系カップリング剤

シランカップリング剤は、無機基材と有機樹脂をつなぐ分子の架橋です。 One end of the molecule u2014 the alkoxy groups u2014 hydrolyzes and bonds to mineral surfaces such as glass, metal, and concrete, while the other end reacts with or hydrogen-bonds to the binder. Amino silanes are the broad-spectrum members of that family. Here the reactive end is an amine, which couples to epoxy, polyurethane, acrylic, and phenolic resins u2014 so aminopropyl grades are the default adhesion promoter before the resin system is chosen.

The trade-off with amino silanes is honest. The same free amine that bonds to almost any resin can yellow under heat or UV and can shorten pot life in amine-sensitive systems. Aminopropyltriethoxysilane (APTES, CAS 919-30-2) is the workhorse; its trimethoxy analog APTMS (CAS 13822-56-5) hydrolyzes faster, which helps in waterborne primers but cuts bath stability. Specify the ethoxy grade where pot life matters and the methoxy grade where fast bond development is the priority.

For tougher adhesion, the diamine grades carry a second nitrogen. N-(2-aminoethyl)-3-aminopropyltrimethoxysilane (CAS 1760-24-3) offers more reactive sites per molecule and is preferred on difficult mineral fillers and metals. Where a system is fully waterborne, pre-hydrolyzed (3-aminopropyl)silanetriol (CAS 58160-99-9) ships as a water-stable solution and avoids the alcohol release of alkoxy grades. Match the backbone to the substrate and the cure, not to a single default.

• 有機塗膜をガラス、金属、鉱物系基材に接着させる接着促進剤およびプライマー
• エポキシおよびポリウレタン系防食塗料における架橋剤と密着促進剤
• 分散性と濡れ性を改善するための無機フィラーおよび顔料の表面処理
• 湿潤強度の保持のためのガラス繊維集束剤および複合材料界面
• 予備加水分解アミノシラン溶液を用いる水系プライマー

• 3-Aminopropyltriethoxysilane (APTES) u2014 PubChem
• 3-Aminopropyltrimethoxysilane (APTMS) — PubChem
• N-(2-Aminoethyl)-3-aminopropyltrimethoxysilane — PubChem
• (3-Aminopropyl)silanetriol — PubChem
• Aminoethylamino silane — PubChem