การผลิตและทดสอบวัสดุมุงหลังคาที่ทำจากของผสมปอแก้วและยางธรรมชาติ

Production and Testing of Jute / Natural Rubber Blends for Domestic Roofs

Name: สมพงษ์ พิริยายนต์

Organization : มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

Name: Sompong Piriyayon

keyword: Roofs

; Natural Rubber

; Natural Fiber

; Vulcanization

; Degradation

Abstract: The possibility of natural rubber mixing with the Jute was investigated, in order to use for roofs. This research was carried out by preparing rubber compound based on natural rubber grade STR20 and mixed with other chemical ingredients; STR20 100 phr, ZnO 2 phr, stearic acid 5 phr, silica 50 phr, PEG 2 phr, carbon black 10 phr, paraffinic oil 2 phr, sulfur 1.5 phr, TBBS 1.5 phr, IPPD 1 phr, eversorb71 2 phr and eversorb90 2 phr. The composition was mixed in the kneader and two-roll mill, cured and tested for its properties (tensile strength, elongation and ozone resistance test). The results revealed that the cured rubber provided higher tensile strength and heat resistance values. However, it resulted in lower hardness and showed dramatically degradation after ozone resistance test. As a result, some additives were decided into the formula to enhance properties of rubber. Oxidize bitumen BA85/25 and BA115/15 were the first choice adding in amount of 3, 6 and 9 phr, respectively. The result showed that both of Bitumen could not develop the properties. Paraffin wax and ozone wax were applied into the formula as amount of 2, 4 and 6 phr, respectively. It was found that the cured rubber showed higher ozone resistance. However, high loading of wax was effective appearance since product surface was changed to white for the wax loading over 4 phr. It also tended to decline in hardness and tensile properties. They could be improved by using phenolic resin; case study was 1.5, 3 and 4.5 phr. After rubber formula was modified properly, 5 mm size of the Jute fiber with loading 20-120 phr were added and milled. The results found that 20 phr of fiber loading demonstrated the great geometrical stability to use for roofs. It obtained 70 shore A of hardness, 390% of elongation at break, 85% of compression set, no water permeability, and offered excellent of both heat and ozone resistance.

มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

Address: กรุงเทพมหานคร

Email: info.lib@mail.kmutt.ac.th

Name: พัฒนะ รักความสุข

Role: อาจารย์ที่ปรึกษา

Created: 2546

Issued: 2005-09-07

Modified: 2558-05-25

วิทยานิพนธ์/Thesis

ISBN: 9741837763

CallNumber: MT221

tha

DegreeName: วิศวกรรมศาสตรมหาบัณฑิต

Level: ปริญญาโท

Descipline: เทคโนโลยีวัสดุ

Grantor: มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

©copyrights มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

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3	MT221ab.txt	2.27 KB	73	2022-02-19 10:14:39

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