PVC-silika kompozit malzemelerinin geliştirilmesi
Küçük Resim Yok
Tarih
1994
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Ege Üniversitesi
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
212 SUMMARY In the present study a PVC-silica composite which can be used for the production of shoe-insole was developed. The strength of the composite was enhanced using silanized silica as filler component. The porous structure of the composite was mainly provided via the utilization of plastlsol-plastigel technology. The capacity of water vapor adsorption and the permeability of the composite were improved by the introduction of precipitated silica into the platisol composition. It was anticipated that the highly porous and highly hydrophilic character of silica would be reflected into composites. Thus the composite samples having varying amount of silica were prepared basically as silanized and non- silanized types. As a conclusion, the contribution of the effect of both the introduction of silica and its silane modification onto the composite structure were the main interests of the study. The product which is basicl\y a PVC-based material was plasticized by 60 phr DOP. Synergetic zinc-calcium stearete mixture and EPSO (epoxidized soybean oil) were used as the thermal stabilizers to prevent the product from thermal degradation effect of the high temperature application of the gelling process. After the evacuation of the entrapped air which takes place into the plastisols, 50 bar pressure and 140°C temperature were applied onto them between A 314 stainless steel plates for 16 minutes. The plastigel sheets were removed from the- die plates after cooling down to 40-50°C. Platigel samples were about 0.5 mm thick for strength tests and about 0.2 mm for the other tests.213 The adsorption isotherms were obtained for composite samples and even for silica component using Cahn Microbalance (CAHN 2000) equipment. A mezoporic structure observed with Type-IV isotherm and \0O.O m /g surface area of silica were determined. 0.13-1.65 % water vapor adsorption capacity of composites was also observed on Microbalance apparatus. Although the diminished water vapor adsorption effect of it, the silane modification enhances the mechanical strenght via the improvement of the silica-PVC interface of the composite. This modification lowered the mechanical strength decrease on wet application of the present study about 6.6 % and hindered the migration of DOP from composite about 24 %. Silane application resulted even in smoother and thinner composites. The comparative study showed that although the composites were weaker from the point of the solubility of the water vapor compared to leather, the water vapor permeability in composite was very close to that of 3 leather. Solubility values were 115 and 1-7 cm 3 -5-6 water/cm.cmHg) and permeabilities were ~10 and ~10 3 2 (cm water (STP ). cm/s) / { cm.cmHg) for leather and composites, respectively. Permeability feature of composites were mainly provided by their porojus structure similar to that of leather. The effective diffusion coefficients of water in leather and composites were 10~ and 10~ m /s, respectively. In conclusion} comparison with leather showed that the composite developed in the present study was very promising as a leather substituent for the production of shoe-insole
213 The adsorption isotherms were obtained for composite samples and even for silica component using Cahn Microbalance (CAHN 2000) equipment. A mezoporic structure observed with Type-IV isotherm and \0O.O m /g surface area of silica were determined. 0.13-1.65 % water vapor adsorption capacity of composites was also observed on Microbalance apparatus. Although the diminished water vapor adsorption effect of it, the silane modification enhances the mechanical strenght via the improvement of the silica-PVC interface of the composite. This modification lowered the mechanical strength decrease on wet application of the present study about 6.6 % and hindered the migration of DOP from composite about 24 %. Silane application resulted even in smoother and thinner composites. The comparative study showed that although the composites were weaker from the point of the solubility of the water vapor compared to leather, the water vapor permeability in composite was very close to that of 3 leather. Solubility values were 115 and 1-7 cm 3 -5-6 water/cm.cmHg) and permeabilities were ~10 and ~10 3 2 (cm water (STP ). cm/s) / { cm.cmHg) for leather and composites, respectively. Permeability feature of composites were mainly provided by their porojus structure similar to that of leather. The effective diffusion coefficients of water in leather and composites were 10~ and 10~ m /s, respectively. In conclusion} comparison with leather showed that the composite developed in the present study was very promising as a leather substituent for the production of shoe-insole.213 The adsorption isotherms were obtained for composite samples and even for silica component using Cahn Microbalance (CAHN 2000) equipment. A mezoporic structure observed with Type-IV isotherm and \0O.O m /g surface area of silica were determined. 0.13-1.65 % water vapor adsorption capacity of composites was also observed on Microbalance apparatus. Although the diminished water vapor adsorption effect of it, the silane modification enhances the mechanical strenght via the improvement of the silica-PVC interface of the composite. This modification lowered the mechanical strength decrease on wet application of the present study about 6.6 % and hindered the migration of DOP from composite about 24 %. Silane application resulted even in smoother and thinner composites. The comparative study showed that although the composites were weaker from the point of the solubility of the water vapor compared to leather, the water vapor permeability in composite was very close to that of 3 leather. Solubility values were 115 and 1-7 cm 3 -5-6 water/cm.cmHg) and permeabilities were ~10 and ~10 3 2 (cm water (STP ). cm/s) / { cm.cmHg) for leather and composites, respectively. Permeability feature of composites were mainly provided by their porojus structure similar to that of leather. The effective diffusion coefficients of water in leather and composites were 10~ and 10~ m /s, respectively. In conclusion} comparison with leather showed that the composite developed in the present study was very promising as a leather substituent for the production of shoe-insole.
213 The adsorption isotherms were obtained for composite samples and even for silica component using Cahn Microbalance (CAHN 2000) equipment. A mezoporic structure observed with Type-IV isotherm and \0O.O m /g surface area of silica were determined. 0.13-1.65 % water vapor adsorption capacity of composites was also observed on Microbalance apparatus. Although the diminished water vapor adsorption effect of it, the silane modification enhances the mechanical strenght via the improvement of the silica-PVC interface of the composite. This modification lowered the mechanical strength decrease on wet application of the present study about 6.6 % and hindered the migration of DOP from composite about 24 %. Silane application resulted even in smoother and thinner composites. The comparative study showed that although the composites were weaker from the point of the solubility of the water vapor compared to leather, the water vapor permeability in composite was very close to that of 3 leather. Solubility values were 115 and 1-7 cm 3 -5-6 water/cm.cmHg) and permeabilities were ~10 and ~10 3 2 (cm water (STP ). cm/s) / { cm.cmHg) for leather and composites, respectively. Permeability feature of composites were mainly provided by their porojus structure similar to that of leather. The effective diffusion coefficients of water in leather and composites were 10~ and 10~ m /s, respectively. In conclusion} comparison with leather showed that the composite developed in the present study was very promising as a leather substituent for the production of shoe-insole.213 The adsorption isotherms were obtained for composite samples and even for silica component using Cahn Microbalance (CAHN 2000) equipment. A mezoporic structure observed with Type-IV isotherm and \0O.O m /g surface area of silica were determined. 0.13-1.65 % water vapor adsorption capacity of composites was also observed on Microbalance apparatus. Although the diminished water vapor adsorption effect of it, the silane modification enhances the mechanical strenght via the improvement of the silica-PVC interface of the composite. This modification lowered the mechanical strength decrease on wet application of the present study about 6.6 % and hindered the migration of DOP from composite about 24 %. Silane application resulted even in smoother and thinner composites. The comparative study showed that although the composites were weaker from the point of the solubility of the water vapor compared to leather, the water vapor permeability in composite was very close to that of 3 leather. Solubility values were 115 and 1-7 cm 3 -5-6 water/cm.cmHg) and permeabilities were ~10 and ~10 3 2 (cm water (STP ). cm/s) / { cm.cmHg) for leather and composites, respectively. Permeability feature of composites were mainly provided by their porojus structure similar to that of leather. The effective diffusion coefficients of water in leather and composites were 10~ and 10~ m /s, respectively. In conclusion} comparison with leather showed that the composite developed in the present study was very promising as a leather substituent for the production of shoe-insole.
Açıklama
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Anahtar Kelimeler
Kimya Mühendisliği, Chemical Engineering, Kompozit malzemeler, Composite materials
