Re: Цианоакрилат или суперклей - информация
Додано: 24 листопада 2016, 22:14
https://en.wikipedia.org/wiki/Wood_glue
Cyanoacrylate (Crazy glue, Superglue, CA or CyA) is used mainly for small repairs, especially by woodturners. It bonds instantly, including to skin. Cured CA is essentially a plastic material. Versions are available that are able to wick into tight joints but bond with reduced strength (because much drips out and much soaks into the wood leaving very little on the surface for the bond), or thicker formulations (gel) which can fill very small gaps, do not flow out of the joint, and do not soak so quickly into wood. Thinner cyanoacrylate glue does not bond more quickly nor form shorter polymer chains than the gel version when used on wood. The chemical nature of wood significantly delays polymerization of cyanoacrylate. When it finally polymerizes in a wood joint, enough gel remains for a better bond than with the thin version. When using the gel, too much glue will weaken the resulting bond. Likewise, 'applying too little of the thin super glue will result in almost no glue at all remaining in a wood joint, causing a weak bond or no bond at all. Versions are also available that are foam safe (regular CA dissolves most plastic foams) which are usually also marketed as low odor. Cyanoacrylate is stiff but has a low shear strength (brittle) thus normal wood bending can break the bond in some 'applications. Often, too much adhesive is 'applied which leads to a much weaker bond. CA has quickly become the dominant adhesive used by builders of balsa wood models, where its strength far exceeds the base materials.
Если коротко то:
Рекомендуется для склейки дерево использовать суперклей не в виде жидкости, а в виде геля.
Жидкий сильно впитывается деревом и почти ничего не остается на шов.
Гель, как более густая субстанция, впитывается слабее и оставляет достаточное количество на поверхности для формирования прочного шва.
Кстати, правильно ли я понимаю, что столь любимый всеми гитаростроителями ТайтБонд есть ни что иное, как пусть и специфический по свойствам, но ПВА?
Cyanoacrylate (Crazy glue, Superglue, CA or CyA) is used mainly for small repairs, especially by woodturners. It bonds instantly, including to skin. Cured CA is essentially a plastic material. Versions are available that are able to wick into tight joints but bond with reduced strength (because much drips out and much soaks into the wood leaving very little on the surface for the bond), or thicker formulations (gel) which can fill very small gaps, do not flow out of the joint, and do not soak so quickly into wood. Thinner cyanoacrylate glue does not bond more quickly nor form shorter polymer chains than the gel version when used on wood. The chemical nature of wood significantly delays polymerization of cyanoacrylate. When it finally polymerizes in a wood joint, enough gel remains for a better bond than with the thin version. When using the gel, too much glue will weaken the resulting bond. Likewise, 'applying too little of the thin super glue will result in almost no glue at all remaining in a wood joint, causing a weak bond or no bond at all. Versions are also available that are foam safe (regular CA dissolves most plastic foams) which are usually also marketed as low odor. Cyanoacrylate is stiff but has a low shear strength (brittle) thus normal wood bending can break the bond in some 'applications. Often, too much adhesive is 'applied which leads to a much weaker bond. CA has quickly become the dominant adhesive used by builders of balsa wood models, where its strength far exceeds the base materials.
Если коротко то:
Рекомендуется для склейки дерево использовать суперклей не в виде жидкости, а в виде геля.
Жидкий сильно впитывается деревом и почти ничего не остается на шов.
Гель, как более густая субстанция, впитывается слабее и оставляет достаточное количество на поверхности для формирования прочного шва.
Кстати, правильно ли я понимаю, что столь любимый всеми гитаростроителями ТайтБонд есть ни что иное, как пусть и специфический по свойствам, но ПВА?