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Применить Всего найдено 2. Отображено 2.
12-05-2023 дата публикации

Bi-component polyurethane structural adhesive containing three-functionality hydroxyl resin and preparation method of bi-component polyurethane structural adhesive

Номер: CN116103010A
Автор: NIE XIMING, QI CHUNPING, SUN CHONGBIN, WANG JIE, KONG QINGYUAN, YANG YUKUN, GE FUWEN
Принадлежит:

The invention discloses a bi-component polyurethane structural adhesive containing three-functionality hydroxyl resin and a preparation method of the bi-component polyurethane structural adhesive, and relates to the technical field of polyurethane adhesives. The bi-component polyurethane structural adhesive is composed of a component A and a component B, the component A is composed of toluene diisocynate, trimethylolpropane, polyester diol, a chain extender and a catalyst, and the component B is polymethylene polyphenyl polyisocyanate; the preparation method comprises the following steps: carrying out a reaction on low-molecular-weight polyester glycol, toluene diisocynate TDI and trimethylolpropane TMP to obtain a new trihydroxy polymer with a regular molecular structure; according to the trihydroxy polymer, small-molecular-weight polyester glycol is used as a soft segment, TDI and TMP are used as inner hard segment materials, and due to the existence of trifunctionality, the polyurethane ...

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Номер записи: 1
15-08-2023 дата публикации

Single-component high-temperature-resistant and fast-curing adhesive for silicon steel sheet rotor and preparation method thereof

Номер: CN116589974A
Автор: SUN CHONGBIN, QI CHUNPING, WANG JIE, KONG QINGYUAN, YANG YUKUN, GE FUWEN, JING YUANRONG
Принадлежит:

The invention discloses a single-component high-temperature-resistant and fast-curing adhesive for a silicon steel sheet rotor, which belongs to the technical field of adhesives and is prepared from the following raw materials: carboxyl-terminated liquid polybutadiene rubber modified organic silicon epoxy resin, phenolic resin, hydroxyl-terminated polyurethane elastomer, a curing accelerator, an anti-aging agent and a solvent. The single-component high-temperature-resistant and fast-curing adhesive for the silicon steel sheet rotor is low in cost, high in bonding strength, good in toughness, good in high-temperature resistance and high in curing speed, has relatively high electrical insulating property and relatively low dielectric loss, and can meet the bonding requirement of a motor iron core on silicon steel sheets. The adhesive force after curing is high, the adhesive force is grade A, the flexibility is grade 1, the adhesive can be used for a long time at the temperature of 150 DEG ...

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Номер записи: 2