Kūkākūkā Ka hopena o nā ʻano like ʻole o ka Epoxy Resin ma nā ʻano Mechanical o nā Adhesives.

2022-10-20

1. Introduction


  Eokixy resin is an important thermosetting resin in China. At present, the production capacity of epoxy resin I in China has exceeded 50% of the global total production capacity. The adhesive developed with wai epoxy resin has the advantages of good mechanical properties, high bonding strength, chemical corrosion resistance, high stability, etc. This kind of adhesive is mainly composed of epoxy resin, curing agent, accelerator, etc. It has good compatibility with most bonding substrates in life, such as metals, wood and some plastics.


 Because of its excellent comprehensive properties, epoxy adhesives have been widely used in bonding metal materials and non-metallic materials. In order to further obtain the epoxy resin adhesive with better performance, this paper focuses on changing the proportion of epoxy resin in the formula, and the epoxy resin adhesive developed by using different tree resin mixture proportions has passed various mechanical property tests, thus demonstrating the impact of epoxy resin on the mechanical properties of its adhesive.


wai epoxy resin


2. Hoʻokolohua


a) Nā mea hoʻokolohua


  Bisphenol A (ʻano E-51) epoxy resin; Bisphenol A (ʻano E-44) epoxy resin; Polyphthalamide 650 # me ka haʻahaʻa molekala kaumaha; ʻO ka mea hoʻohui hoʻohui Silane (KH-580); T-31 phenolic amine epoxy mea ho'ōla; ʻO ke ʻano hana ʻea kinoea silica.


b) Nā ʻanuʻu hoʻokolohua


  Ka hoʻomākaukau ʻana i ka ʻāpana A: mua, hoʻomākaukau i ka resin nui, hoʻohui i nā mea hoʻopihapiha, accelerants a me nā mea hoʻohui ʻē aʻe i ka huli ʻana, a laila e hoʻoulu mau no 3h i ka lumi wela, a laila e hoʻohui i ka mea hoʻoikaika a me ka hui hui i ka huli a hoʻoulu mau no ka 0.5h e hoʻomākaukau i ka mea. A o ka pipili.


  Hoʻomākaukau i ka mea B: ʻo ka mua, e hoʻohui i ka polyphthalamide, T-31 curing agent, filler, etc. i ka huli ʻana, e hoʻoulu mau no 3h ma ka lumi wela, a laila e hoʻohui i ka mea hoʻohui a me ka mea hoʻoikaika, a hoʻoulu mau no 0.5h e hoʻomākaukau i ka māhele B o pipili.


  I ka hoʻomākaukau ʻana i ka hāpana, e hoʻololi i ka ʻike o ka oleoresin. ʻO ka ʻike o ka resin epoxy nui ka 40%, 45%, 50%, 55% a me 60%. ʻO ka papahana mua e hoʻoponopono i ka ʻike o ka E-51 epoxy resin; ʻO ka papahana ʻelua e hoʻoponopono i ka ʻike o ka E-44 epoxy resin; ʻO ke kolu o ka hopena, ʻo ia ka hoʻohui ʻana i ka resin E-44 a me ka resin E-51 i ka ratio o 2: 1, a laila hoʻoponopono i ka ʻike. Ua hoʻāʻo ʻia a nānā ʻia nā ʻano mechanical o nā adhesives me nā ʻokoʻa like ʻole a me nā ʻāpana like ʻole.


  c) Ho'āʻo Hana


  Ka ikaika shear (MPa): E hoʻoholo i ke ʻano hoʻāʻo e like me GB/T 7124-2008.


  Ka ikaika o ka hopena (MJ/m2): e hoʻoholo i ke ʻano hoʻāʻo e like me GB/T 6328-1999.


  Shore A paakiki: e ho'āʻoʻia e like me GB/T531.1-2008 paʻakikī.


 3. Nā hopena a me nā kūkākūkā


  a) Ka hopena o nā mea like ʻole o ka epoxy resin E-51 ma kona mau waiwai mechanical

  

  Hōʻike ʻia nā hopena hoʻokolohua like ʻole o ka epoxy resin E-44, E-51 a me E-44 i hui pū ʻia me E-51 ma nā ʻano like ʻole ma ka Papa 1, Papa 2 a me ka Papa 3.


Papa 1 Nā hualoaʻa hoʻāʻo o nā ʻano like ʻole o ka epoxy resin E-51

Ka nui o ka Epoxy Resin E-51 %

40

45

50

55

60

Ka ikaika shear / MPa

15.226

18.592

19.301

21.548

17.861

Ka Pākīpika MJ/m2

1.49

1.93

2.38

2.54

2.06

Kahakai He paʻakikī

66.0

71.5

79.2

78.1

75.5


  E like me ka mea i hōʻike ʻia ma ka Papa 1, me ka hoʻonui ʻia o ka nui o ka epoxy resin E-51 i hoʻohui ʻia i ke kino nui, ʻo nā waiwai ʻoki like ʻole, nā waiwai hopena a me ka paʻakikī Shore o ka mea hoʻopili i kūkulu ʻia ua hōʻike i kahi ʻano o ka hoʻonui mua ʻana a laila emi. ʻO ka ikaika shear a me ka ikaika o ka hopena o ka mea hoʻopili me 55% o ka epoxy resin E-51 i hōʻea i ka palena kiʻekiʻe loa, ʻo ia ka 21.548MPa a me 2.54MJ/m2, hiki ke ʻike ʻia ua hana maikaʻi ka epoxy resin me ka mea hoʻohui crosslinking agent coupling agent. ma keia dosage. Eia naʻe, ua hiki ka paʻakikī ʻo Shore i ka palena kiʻekiʻe loa i ka wā he 51% ka nui o E-50. Ua manaʻo mua ʻia e pili ana ke kumu i ke ʻano a me ka nui o ka lāʻau lapaʻau i hoʻohana ʻia. Pono e hahai ʻia ke kumu kikoʻī o kēia hopena e ka noiʻi ma hope. E like me ka resin nui o ka adhesive, ʻo ka nui o ka epoxy resin e hoʻopilikia i nā waiwai mechanical o ka adhesive.


  b) Ka hopena o nā mea like ʻole o ka epoxy resin E-44 ma kona mau waiwai


 Papa 2 Nā hualoaʻa hoʻāʻo o nā ʻano like ʻole o ka epoxy resin E-44

Ka nui o ka Epoxy Resin E-44 %

40

45

50

55

60

Ka ikaika shear / MPa

14.724

18.541

22.312

21.723

19.213

Ka Pākīpika MJ/m2

1.51

1.87

2.67

2.35

2.26

Kahakai He paʻakikī

64.1

68.4

77.5

74.5

73.2


  Pēlā nō, ma ka Papa 2, aia ka lula e like me ka Papa 1. Hiki ke ʻike maopopo ʻia he hopena nui ka nui o ka resin epoxy i nā waiwai mechanical o ka hāpana adhesive. Ke nānā nei i ka papaʻaina holoʻokoʻa, me ka hoʻonui ʻana i ka nui o ka epoxy resin, ka waiwai ʻāhi, ka waiwai hopena a me ka paʻakikī Shore o ka adhesive ua hoʻomaikaʻi like ʻia. I ka 44% o ka nui o ka epoxy resin E-50, ua hiki aku kona mau waiwai mechanical i ka nui loa, oia ka ikaika shear 22.312MPa, ka ikaika hopena 2.67MJ/m2 a me ka paakiki 77.5.


  c) Ka hopena o nā ʻano ʻokoʻa like ʻole o E-44 a me E-51 i ko lākou mau waiwai Mechanical.


Papa 3 Nā hualoaʻa hoʻāʻo o nā ʻano like ʻole o ka huila epoxy resin E-44 a me E-51

Ka nui o ka E-44:E-51 %

40

45

50

55

60

Ka ikaika shear / MPa

15.539

19.561

21.928

24.137

20.201

Ka Pākīpika MJ/m2

1.47

1.91

2.39

2.74

2.11

Kahakai He paʻakikī

65.5

69.0

74.7

80.4

77.3


  ka epoxy resins E-44 a hui pū ʻia ʻo E-51 i ka ratio o 2:1. Hōʻike ʻia nā hopena hoʻāʻo kūpono ma ka Papa 3. Hiki ke ʻike ʻia mai ka papa ʻaina ʻo ka resin i hui ʻia ka hopena ʻoi loa i nā waiwai shear, a ʻoi aku ka manaʻo o ka ikaika hopena. Eia naʻe, ʻo ka ikaika o ka hopena ke ʻano o ka emi ʻana ma hope o ka hiki ʻana i ka waiwai kiʻekiʻe, ʻoiai he liʻiliʻi kona hopena i ka paʻakikī.


4. Panina


  Ma kēia pepa, ua kālailai ʻia nā waiwai mechanical e ke ʻano o ka hoʻololi ʻana, a ua hoʻokō ʻia ka hoʻāʻo ma ka hoʻololi ʻana i ke ʻano a me ka hoʻohui ʻana i ka nui o ka lāʻau tallow. E like me ka palapala ʻikepili ma luna, ka ʻāpana hui o ka mea nui epoxy resin E44 aʻo E51 ka hopena nui loa i nā mea mechanical o ka mea hoʻopili. Ke hiki i ka 55% ka nui o ka resin, nā waiwai shear, nā waiwai hopena a me ka paʻakikī o Shore o ka adhesive hiki i ka palena kiʻekiʻe, a hiki ke hoʻokō ʻia i ka hana maoli a hoʻokō i nā pono hoʻohana.


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