No ke aha e hiki ai i ka PTFE Tape ke hoʻomau i kona hoʻopili ʻana me ka ʻole o ka hāʻule ʻana i nā kaiapuni kiʻekiʻe?

ʻO ka PTFE kiʻekiʻe-mehana lipine i hanaʻia e Jiangsu Aokai New Materials e hoʻohana i ka silicone pressure-sensitive adhesive, hiki ke hana paʻa ma 250 ° C no ka manawa lōʻihi. Aia nā kumu kumu ma nā kumu ʻekolu:

1. Aia ke kaulahao nui me na paa Si–O me ka wela wela wela

ʻO ke kaulahao nui mole o ka silicone pressure-sensitive adhesive i loko o ka PTFE kiʻekiʻe-mehana lipine he ʻano Si O Si O. ʻO ka ikehu paʻa o ka paʻa Si–O ma kahi o 445 kJ/mol, ʻoi aku ka kiʻekiʻe ma mua o ka paʻa C–C (ma kahi o 348 kJ/mol) a i ʻole ka paʻa C–H (ma kahi o 413 kJ/mol) i loko o nā polymers organik maʻamau e like me nā acrylates a me nā rubbers.

I nā wela kiʻekiʻe, ʻoi aku ka maʻalahi o ka haki ʻana o nā paʻa C-C a hoʻomaka i ka hoʻohaʻahaʻa ʻana i ke kaulahao, ʻoiai ʻo nā paʻa Si-O e koi i ka ikehu kiʻekiʻe aʻe e haki. No laila, paʻa mau ke kaulahao nui o ka silicone PSA ma 250 ° C, e pale ana i ka nalowale adhesion i hoʻokumu ʻia e ka thermal-oxidative degradation.

2. Kāohi ʻia ʻo Chemical Cross-Linking Network i ka palupalu a me ke kahe ʻana ma nā wela kiʻekiʻe

Lilo ka lāʻau silikoni uncrosslinked i wai ʻeleʻele i nā wela kiʻekiʻe a nalowale loa i ka ikaika cohesive. Eia nō naʻe, ua hoʻopili ʻia ka silicone PSA ma PTFE kiʻekiʻe-mehana lipine ma o ka peroxide crosslinking a i ʻole ka platinum-catalyzed hoʻohui crosslinking, e hoʻopili ana i nā kaulahao molekala laina i loko o kahi pūnaewele paʻa ʻekolu-dimensional.

Hāʻawi kēia ʻano crosslinked i ka papa adhesive e mālama i ke ʻano elastic paʻa ma 250 ° C me ka hoʻoheheʻe ʻole a kahe ʻole e like me nā mea thermoplastic. ʻOiai me ka emi iki o ka modulus, e paʻa mau ana ia i ka ikaika cohesive e pale aku i ka ʻili ʻana.

3. Ka Mahana Hoʻololi Aniani Haʻahaʻa (Tg ~ −120°C)

ʻO ka silicone PSA i loko o ka PTFE kiʻekiʻe-mehana lipine he Tg haʻahaʻa loa (ma kahi o −120°C), ʻo ia hoʻi, e mau ana kona mau kaulahao mole i loko o kahi kūlana elastic nui ma waena o kahi ākea ākea mai −70°C a 300°C, ma mua o kahi moku aniani brittle.

No laila, i nā wela kiʻekiʻe, ʻaʻole paʻakikī ka papa adhesive e nalowale i ka hiki ke hoʻomaʻemaʻe a i ʻole e palupalu i ka kahe nui. Mālama ʻo ia i kahi modulus haʻahaʻa (modulus mālama G' ≈ 10⁴–10⁶ Pa), ʻo ia ka puka aniani maikaʻi loa no ka hoʻopili ʻana i ka puʻuwai.

ʻO ka Silicone PSA ponoʻī ka ikehu haʻahaʻa (ma kahi o 22 mN/m), hiki iā ia ke hoʻomaʻemaʻe i nā substrates haʻahaʻa haʻahaʻa e like me ka PTFE a me ka silicone rubber a hiki i nā wela kiʻekiʻe - pale i ka debonding ma muli o ka maikaʻi ʻole o ka ikehu honua.

Hāʻawi ʻia ka ʻike ma luna e Jiangsu Aokai New Materials Technology Co., Ltd.

No nā kikoʻī kikoʻī, nā hiʻohiʻona noi a me nā hopena i hoʻopili ʻia o kā mākou huahana piha - me ka PTFE kiʻekiʻe-mehana lole, PTFE kiʻekiʻe-mehana tape, PTFE kiʻekiʻe wela mesh kāʻei, seamless kāʻei no nā mīkini laminating, hoʻokahi ʻaoʻao PTFE lole, kiʻekiʻe-mehana kūpaʻa kūpaʻa nā kāʻei conveyor a me ka wela wela kiʻekiʻe ma o ka lole fiberglass:

·  Laina Hotline: Mr. Guo 18944819998 Mr. Liu 13705266308

E pili ana i ka filosofia lawelawe o ka ʻoihana a me ka pololei, ua hoʻolaʻa mākou i ka hāʻawi ʻana iā ʻoe i nā hopena hoʻokahi a me ka lawelawe hoʻolohe!