Study on the application of petroleum resin compatibility

Between the petroleum resin and elastomer compatibility is an important factor affect the bonding strength of hot melt adhesive, good compatibility with increasing viscosity resins and elastomers can make colloidal storage modulus decreased, under a certain stress in the colloid and adherends fully bonded; second if not compatible, the colloid storage modulus increased, it will reduce adhesive and adherend adhesive force. Between petroleum resin and elastomer compatibility usually wax cloud point, wax cloud point as the performance index of resin, and the relative molecular mass and its distribution, the resin polarity related, of hot melt adhesive initial tack, tack and peel strength plays an important role in the balance. Petroleum resin wax cloud point is low, between the elastomer and resin, wax system the better compatibility, the higher the initial viscosity of hot melt adhesive, but to less viscous, when petroleum resin wax fog rises, to increase of viscosity.

Gorgeous [8], to S1S/RLPO (styrene isoprene styrene and ethyl acrylate - methyl methacrylate acrylate methyl chloride trimethylamine ethyl ester) blends as the matrix resin of HMPSA (HMPSA), examine the C5 resin on resin matrix compatibility and adhesion properties of the HMPSA. The results show that with the increasing amount of C5 resin, PS (polystyrene) phase of TG is essentially the same, PI (polyisoprene) phase of TG gradually hasten is close to C5 resin that C5 resin and pi phase has good compatibility, and compatibility with the PS is relatively poor.

Liu Xiulan [9] by dynamic mechanical analysis of styrene butadiene styrene block copolymer (SBS) and hydrogen C5 petroleum resin blends compatibility, and to examine the ozone treatment effect of the blends. Results show that when the C5 petroleum resin content is 50 phr, the SBS soft polybutadiene phase of good compatibility, only one glass transition temperature (TG). With the increase of the ozone treatment time, the polarity of C5 petroleum resin was increased, and the compatibility of the 2 was improved with the increase of C5 and 120min, respectively.

HMPSA (HMPSA) commonly used tackifying resin rosin resin, terpene resin and petroleum resin, 3. There are some differences between the compatibility of the SBS (styrene butadiene / ethylene block copolymer) with the increase of the adhesive resin and thermoplastic elastomer. Wang Yu [10] et al. Study and compare the relationship between the structure and properties of the resin. The research shows that when the softening point of the bonding resin is 100~110, the HMPSA can obtain lower melt viscosity and high peeling strength. The adhesive resin softening point is 100 DEG C, peel strength followed by containing containing terpene resin HMPSA> rosin resin HMPSA> containing petroleum resin HMPSA. When w (increasing viscosity resin) =210% (with respect to the elastomer SBS is concerned), containing petroleum resin HMPSA performance inferior to containing rosin resin, terpene resin) HMPSA; when w (increasing viscosity resin) is equal to or more than 210%, the melt viscosity of HMPSA below 10 000 MPa - s, but to the increased viscosity of.

Di Mingwei [11], using dynamic mechanical analysis (DMA) method, the dynamic mechanical properties of pyridyl functionalized SBS (polarity sbsvp or SBS thermoplastic elastomer and C5 petroleum resin blends, in order to characterize sbsvp and C5 petroleum resin compatibility. Tests show that the variation of C5 petroleum resin and sbsvp blends loss factor with temperature only a significant unimodal and the position bias in Pb and sbsvp corresponding to the peak, and corresponding in the PS phase and the peaks is very small, that C5 petroleum resin and sbsvp Pb phase compatibility is good, big points C5 petroleum resin and Pb phase compatibility.

Maleic anhydride (MAH) grafted C5 petroleum resin C5-g-MAH, make its molecular structure introduction of polar groups, is conducive to improve the compatibility of petroleum resin and other polar polymers, expand the use of petroleum resin. Ting coating [12] such as the melting method preparation of C5 petroleum resin and maleic anhydride C5-g-MAH, the over oxidation of Dicumyl Peroxide (DCP), maleic anhydride (MAH) dosage and group 3 points (cross-linking agent) species on the grafting ratio of the C5-g-MAH. The study showed that the quality of DCP was 0.2, and the rate of MAH was 4. Group 3 sub species on graft ratio of C5-g-MAH from big to small is as follows: Cashew Shell Oil > leukotriene propyl heterotrimeric cyanate ester (TAIC) > 1, 2-polybutadiene 1,2-PBd were compared with the blank sample increased; Fourier transform infrared spectroscopy (FT-IR) analysis confirmed the grafting reaction of MAH melt grafted C5 petroleum resin.

Chen Junzhi [13], maleic anhydride and initiator agent dosage and reaction time on the modified product of the grafting yield, softening point, bonding to prepare as hot melt adhesive increase the high activity of resin bonded modified C5 petroleum resin were studied. The optimum conditions were as follows: MAH dosage 8%, reaction temperature 200, reaction time 2 h, initiator dosage 1%. The experimental results were as follows: the dosage of MAH was 8%, the reaction time was 2 h, the dosage of initiator was 1%, the grafting rate was 90.1%, the adhesion was 0.79 MPa, the softening point was 129.1. After modification of C5 petroleum resin, the adhesion and softening point were significantly improved than those of petroleum resin. From the view of molecular structure, due to the introduction of polar groups, polarity is greatly enhanced, can become a highly active and highly active EVA compatibility with polar resins.

The compatibility between SBS and [14] was studied by the analysis of Tg in the blends. The results show that the hard segment PS in the oil resin and SBS are not compatible, and the polarity of the resin is improved and the compatibility is improved. The treatment time of the carbonyl group was about 90 min, the mass fraction of the oil resin in the blend was more than 20%, and the blend system formed a uniform continuous phase,