Tap chi H6a hoc, T. 45 (2), T, 142 - 146,2007 ? ,? ? ? " A.' KHAO SAT ANH HUONG CUA HAM LUQNG SANTOPREN DEN , A'? ? TINH CHAT CUA V~T L1~U POLYME BLEND TREN CO SO CAO SU TI! NHIEN/POLYPROPYLEN/SANTOPREN Dell t o« soan 5-4-2006 LETHI MY HANH, TRAN TBI THANH Y AN Phong Vi phdn tich, Vien K.v thuat Nhiet doi, Vifll Khoa hoc I'd Cong ngJze Vih Nam SUMMARY This paper presents the results relating 10 the influence uf santopren (SAN) content to the properties of polymer blend based on natural rubber (NRI and polypropvlen (pp I with the presence of peroxide inflator. The properties of polymer blend are best when the content of SAN is 10%. The initial tensile strength is 19.27 MPu, after the accelerating weather fest if remained above 86%. The thermal gravimetric analysis (TCA) showed that the polymer blend with f()°/"SAN was resistant up to 25(J'C. This polymer would be degraded more slowly than that of the polymer blend without SAN. 1- M6 DAU Vicc nghien ciru che tao v~t lieu theo huong vat lieu t6 hop (po1yme blend) voi cac tinh chill t6i uu ella cac polyme thanh phan va gia thanh hop ly ngay cang thu hUI sir quan tam ella nhieu nha chuyen m6n [2]. Die san pham cong nghiep tit v~t lieu [6 hop tren co sa Cao su III nhien (CSTN) va po1yprapylen (1'1') duoc ung dung nhieu trong thuc te VI vat lieu polyme blend thu duoc mang day du tinh chat UU viet cua CSTN va PI'. Tu y nhien, do nrong hop pha, dO ben moi truong ella CSTN va PI' kern, nen viec tim ra hop chat lam tang do ben thoi tier, do urong hop pha giiia CSTN va PI' la can thiet. Santopren (SAN) mOL san pham thuong mai ella Due co thanh phan chu yeu la EPDM va PI' duoc xem la phu hop trang vai Ira la tac nhan urong hop pha eho CSTN va PI' [5]. Trang bai viet nay, chung toi trinh bay nhiing khao sat ve anh huang cua ham luong SAN den tinh chat vat lieu polyme blend tii CSTN va PI' voi chill khoi mao Dieumy1 peoxit (DCI') bang phliang phap tron chay 13, 4]. 142 II - PHUONG PHAI' NGllIEN cutJ L H6a chal - Cao su [IJ nhien ella Viet Nam loai SYR- 51 - PP isotactic 7350 cua Due, chi s6 isotactic la 97%, do tinh the hoa 65%, nhiet do nong chay 163"C - Santopren (SAN) 103-40 dang [huang pharn cua Due. - Dicumyl peoxit (DCI') co ham luang oxi heat hoa la 5,9%, thoi gian ban huy a17?"C la I phut. 2. Thiel bi - May tron kin Haake (Due), Vien Ky thuat Nhiet doi; - May ep thuy lire co gia nhiet Toyoseiki (NMt Ban), Vien Ky thuat Nhiet doi; - "I'll thir nghiem khi hau gia toe UY con (My), Vien Ky thuat Nhiet d6i; - Thier bi do tinh nang co ly da nang Zwick (Due), Vien Ky thuat Nhiet doi; . tinh nang co ly da nang Zwick (Due), Vien Ky thuat Nhiet doi;