WO1997030116A1

WO1997030116A1 - Vinyl chloride-base damping resin composition

Info

Publication number: WO1997030116A1
Application number: PCT/JP1996/000908
Authority: WO
Inventors: Yasuyuki Ohira; Mitsuo Hori; Masayuki Yamashita
Original assignee: Yasuyuki Ohira; Mitsuo Hori; Masayuki Yamashita
Priority date: 1996-02-13
Filing date: 1996-04-01
Publication date: 1997-08-21
Also published as: AU1203497A

Abstract

A vinyl chloride-base damping resin composition excellent in the capability of absorbing vibrational energy. The composition comprises a vinyl chloride resin and a compound that is soluble in the resin and has a number of cyclic structures in its molecule, the molecular weight of the cyclic structure parts accounting for at least 50 % of that of the molecule as a whole. The composition is applied to vibration generating portions of automotive trims, building materials, household electric appliances, and so forth.

Description

Technical Field The present invention relates to a vinyl chloride-based vibration-damping resin composition having excellent vibration energy absorption performance. 2. Description of the Related Art Conventionally, as a material for absorbing vibration energy, a material made of a soft vinyl chloride resin obtained by adding di-2-ethylhexyl phthalate (DOP) to a vinyl chloride resin is known. However, as shown in Fig. 1, this soft vinyl chloride resin had a low loss tangent t an <5, and did not have a very high ability to absorb vibration energy (loss tangent t an <5). Moreover, since the maximum value of the loss tangent t an <5 of this soft vinyl chloride resin is in a relatively high temperature range of about 60 to 100 ° C., the amount of DOP added is increased to 20. In the case where the loss tangent tan (5 is adjusted to be the maximum in the normal temperature range around C, the loss tangent tan (5 has a disadvantage that the maximum value itself becomes low. In view of such circumstances, an object of the present invention is to provide a vinyl chloride-based vibration damping resin composition having excellent vibration energy absorbing ability. DISCLOSURE OF THE INVENTION The present invention relates to a vinyl chloride resin, which is soluble in the vinyl chloride resin, has many cyclic structures in the molecule, and the molecular weight of the cyclic structure portion is 50% of the molecular weight of the whole molecule. We have proposed a vinyl chloride-based vibration damping resin composition (hereinafter simply referred to as a composition) containing a compound occupying the above (hereinafter simply referred to as a polycyclic compound). The vibration energy absorption capacity of this composition shows a high level far exceeding the expected value when compared with the conventional vinyl chloride resin. Although the details are not clear, the following reasons are considered. Vinyl chloride resin has three-dimensionally linked main chains and side chains. When vibrational energy is applied to the vinyl chloride resin, the main chain and side chains of the molecules undergo stretching and rotating motion, and the main chains and side chains of the molecules come into contact with each other. Heat is consumed by friction generated at this time, and vibration energy is absorbed as much as possible. By blending the polychloride compound into the vinyl chloride resin, the main chains and side chains of the molecules of the vinyl chloride resin are widened, and the polycyclic compound enters the gap. As a result, the main chain and side chains of the molecules of the vinyl chloride resin become easier to move, the heat consumption due to friction increases, and the ability to absorb vibration energy also improves. In addition, each ring of the polycyclic compound itself that has entered the gap between the main chain and the side chain of the molecule of the bichloride-based resin vibrates, and the rings of the polycyclic compound contact each other. Contact between the ring and the main chain or side chain of the molecule of the vinyl chloride resin, or contact between the ring in the polycyclic compound and the ring in the other polycyclic compound occurs, and heat is consumed by friction here. As a result, vibration energy is absorbed. In the composition of the present invention, the polymorphic compound is soluble in a vinyl chloride resin, has a large number of cyclic structures in the molecule, and the molecular weight of the cyclic structure portion is 50% of the molecular weight of the whole molecule. It accounts for more than%. "Soluble" in vinyl chloride resin means that it can penetrate into the gaps between the main and side chains of the molecules of the vinyl chloride resin. The category of “soluble” includes not only those in which the compounded polycyclic compound is completely compatible with the vinyl chloride resin but also those in which the compound is partially compatible. Furthermore, even though it is soluble in a vinyl chloride resin, its compatibility varies depending on the temperature at which it is blended. In other words, some melt at 100 ° C but do not melt at 20 ° C. In the present invention, the degree to which the compounded polycyclic compound partially dissolves in the vinyl chloride resin even if it is not completely compatible is considered to be at least in the range of 120 ° C. to 120 ° C. ”. This polycyclic compound has many cyclic structures in the molecule. The cyclic structure in this polycyclic compound includes not only a monocyclic hydrocarbon and a condensed cyclic hydrocarbon, but also a heteromonocyclic compound and a condensed heterocyclic compound. Includes up to a zero member ring. Also, the number of cyclic structures may be two or more, but those with too many rings are in the range of solubility because they are no longer soluble in vinyl chloride seals. The molecular weight of the cyclic structure in this polycyclic compound accounts for more than 50% of the molecular weight of the whole molecule, which means that the vibrating cyclic structure accounts for the majority of the molecule. In the case of a compound in which the molecular weight of this portion is less than 50% of the molecular weight of the whole molecule, the linear and side chain portions that rotate and expand and contract in exchange for the vibration of the ring will increase. The vibration energy consumption due to the vibration of the ring, which produces excellent vibration energy absorption performance, is reduced, and instead the vibration energy is consumed by the rotational expansion and contraction motion in the linear part or side chain part of the molecule. Becomes, vibration energy absorbing performance will decrease significantly. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a graph showing the loss tangent tan c5 at each temperature for the test pieces of Examples 1 to 3 and Comparative Example.

FIG. 2 is a graph showing the loss tangent t anc5 at each temperature for the test pieces of Examples 4 to 6 and Comparative Example.

FIG. 3 is a graph showing the loss tangent tand at each temperature for the test pieces of Examples 7 to 9 and Comparative Example.

FIG. 4 is a graph showing the loss tangent t an (5 at each temperature for the test pieces of Examples 10 to 12 and Comparative Example.

FIG. 5 is a graph showing the loss tangent t an (5 at each temperature for the test pieces of Examples 13 to 15 and Comparative Example.

FIG. 6 is a graph showing the loss tangent t an (5 at each temperature for the test pieces of Examples 16 to: I8 and the comparative example.

FIG. 7 is a graph showing the loss tangent t an 5 at each temperature for the test pieces of Examples 19 to 21 and Comparative Example.

FIG. 8 is a graph showing the loss tangent t anc at each temperature for the test pieces of Examples 22 to 24 and Comparative Example.

FIG. 9 is a graph showing the loss tangent t an (5 at each temperature for the test pieces of Examples 25 to 27 and Comparative Example.

FIG. 10 is a graph showing the loss tangent t an (5) at each temperature for the test pieces of Examples 28 to 30 and Comparative Example.

FIG. 11 is a graph showing the change in loss tangent tan 5 with increasing compounding amount of a compound containing a mercaptobenzothiazyl group in Examples 28 to 30. FIG. 12 is a graph showing the loss tangent tan (5) at each temperature for the test pieces of Examples 31 to 34 and Comparative Examples 2 and 3. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the best mode of the composition of the present invention will be described in detail. The composition of the present invention is obtained by blending a polycyclic compound with a vinyl chloride resin. The vinyl chloride resin used in this composition includes, in addition to a resin polymerized with vinyl chloride alone, a random copolymer or a random copolymer with at least one of monomers copolymerizable with a vinyl chloride monomer. Graft copolymerization with vinyl chloride copolymer resin obtained by block copolymerization, such as vinyl acetate-vinyl chloride copolymer, ethylene-vinyl chloride copolymer, vinylidene chloride-vinyl chloride copolymer, or vinyl chloride monomer A vinyl chloride graft copolymer resin obtained by copolymerizing a resin which can be obtained with the polymer, such as an ethylene-vinyl acetate-vinyl chloride graft copolymer and a polyurethane-monovinyl chloride graft copolymer, can also be suitably used. Examples of polymorphic compounds include compounds having a benzotriazole group represented by the following formula.

The polymorphic compound has benzotriazole having a benzene ring bonded to an azo group as a mother nucleus, and a compound having a phenyl group bonded thereto is particularly excellent. Specifically, 2— {2'—hydroxy-3 '— (3 ", 4", 5 ", 6" tetrahydrofumidimidemethyl) 1-5'—methylphenyl} benzotriazole (2Η Η) , 2- {2'-hydroxy-5'-methylphenyl} -benzotriazole (2ΗΜΡΒ), 2- {2'-hydroxy-3'-t-butyl-5'-methylphenyl} 1-5 —Black benzotriazole (2HBMPCB), 2— {2 ′ —Hydroxy 3 ′, 5 ′ di-t-butylphenyl} -15—Black benzotriazole (2HDBPCB) it can. Another polycyclic compound includes a diphenyl acrylate group represented by the following formula: Can be mentioned,

This polycyclic compound is based on diphenyl acrylate in which two phenyl groups are bonded to one carbon atom of ethylene. For example, ethyl 2-cyano-1,3,3-diphenyl acrylate Acrylate (ECDPA) and the like. <Still another polycyclic compound includes a polycyclic compound containing a mercaptobenzothiazyl group represented by the following formula.

This polycyclic compound is based on mercaptobenzothiazyl, in which a nitrogen atom is bonded to benzothiazyl, as a core. For example, N, N-dicyclohexylbenzothiaziryl 2-sulfenamide, 2-merbutobenzothiazole (MBT), Benzothiazyl sulfide (MBTS), N-cyclohexyl benzothiazyl di-2-sulfenamide (CBS), N-tert-butylbenzothiazyl di-2-sulfenamide (BBS), N-oxydiethylene benzo Thiazilyl 2-sulfenamide (OBS), N, N-diisobrovirbenzothiazilyl 2-sulfenamide (DPBS) and the like can be mentioned. In still another embodiment of the polycyclic compound, two rings such as benzofuran, indole, benzothiazole, benzoxazole, and benzimidazole are bonded. Compounds having an alkyl group or a phenyl group bonded thereto, compounds having three rings such as dibenzofuran, carbazole, phenanthridine, phenoxazine, etc. A phenyl group-bonded or dicyclohexane bonded with two cyclo rings, a diphenyl bonded with two benzene rings, a biviridine bonded with two pyridines, and two phenyl groups connected via an oxygen atom (Cyclohexyloxy) in which a biphenyl ether, a phenyl group and a cyclohexane are bonded via an oxygen atom, and a ring such as benzene, benzene, cyclohexane, and naphthalene are bonded by an acyl group (G 2-naphthyl) diketone), 2,2'furyl, (cyclohexylcarbonyl) benzene,

(Cyclohexylcarbonyl) benzoituside, 1,10-phenanthrene lactone such as carboractone, di-amine-2-amine such as pyridylamine, 1,2

And azo compounds such as' -azonaphthylene, naphthylene-12-azobenzene, p-phenylazobenzensulfonic acid, and (p- (2-hydroxy-11-naphthylazo) benzenesulfonic acid. However, when the compound containing a mercaptobenzothiazyl group described above is mixed with a vinyl chloride resin, the compound containing the vinyl chloride resin and the compound containing a mercaptobenzothiazyl group are not only compatible with each other, but a part of the compound is partially mixed with the vinyl chloride resin. The mercaptobenzothiazyl group is a new vinyl chloride-based vibration-damping resin in which the chlorine atom of the compound is replaced with a mercaptobenzothiazyl group.The polarity of the mercaptobenzothiazyl group is the polarity of the chlorine atom of the vinyl chloride resin. For this reason, compounds containing a mercaptobenzothiazyl group are compounded in a vinyl chloride resin. In this case, chlorine atoms are removed from the vinyl chloride resin chain, and the mercaptobenzothiazyl group is replaced with the chlorine atoms, forming a pendant bond. The composition containing the vinyl chloride-based vibration-damping resin substituted with nzothiazyl group has vibration energy absorption It becomes an excellent material. Although the details of this mechanism are unknown, the degree of freedom of movement when vibrating the vinyl chloride resin is reduced by the amount of mercaptobenzothiazyl group bonded instead of chlorine atom, and friction is increased. It seems that there is not. In addition, in the composition containing the vinyl chloride-based vibration damping resin, the chlorine atom of the vinyl chloride-based resin is replaced with a mercaptobenzothiazyl group. The amount of hydrogen chloride, which has an adverse effect, is decreasing. When a compound containing a mercaptobenzothiazyl group is combined with a vinyl chloride-based resin, a vinyl chloride-based vibration damper is obtained by replacing the chlorine atom in the vinyl chloride-based resin with the mercaptobenzothiazyl group in the composition. Although the embodiment in which the resin is present has been described, an embodiment in which all chlorine atoms are replaced with mercaptobenzothiazyl groups to form a novel vinyl chloride-based vibration damping resin may be considered depending on the amount of the resin and the temperature conditions. As described later, this composition is applied to vibration-generating parts of automobiles, interior materials, building materials, home electric appliances, and the like, but the temperature (operating temperature range) applied in those applications varies. For example, the loss tangent tan (the maximum value of 5 is within the range of 40 ± 10 ° C) is added to a plasticizer-added vinyl chloride resin (hereinafter referred to as vinyl chloride A). The composition obtained by blending the rubber (hereinafter referred to as DCHP) with rubber has excellent vibrational energy absorption performance over a wide temperature range, but the temperature range is so high that it can be applied to all applications. Therefore, the temperature at which the loss tangent tan 6 becomes the maximum must be moved to the operating temperature range so that excellent vibration energy absorption performance can be achieved in the operating temperature range. By mixing A, DCHP and rubber at a predetermined ratio The resulting composition is further blended with a plasticizer-free vinyl chloride resin (hereinafter referred to as vinyl chloride B). As a result, the temperature at which the loss tangent t an (5 is maximized can be moved to the operating temperature range, and excellent vibration energy absorption performance can be exhibited in the operating temperature range. By adding vinyl chloride B, which has a maximum loss tangent t and in the high temperature range of 50 to 150 ° C, to the composition obtained by compounding with rubber, the overall composition is affected by vinyl chloride B. This composition is thought to result from the loss tangent t an δ shifting to the vinyl chloride Β side.This composition can be applied to vibration-generating parts such as automobiles, interior materials, building materials, and home appliances. The type of polymorphic compound and the compounding ratio (vinyl chloride-based areocyanate / polycyclic compound) are appropriately determined in accordance with the intended use. Determined mixing ratio The known vinyl chloride resin and polycyclic compound are kneaded by using a conventionally known melt-mixing device such as a hot roll, Banbury mixer, twin-screw kneader, or extruder, and the vibration damping material is formed by molding. In addition, this composition contains plasticizers, stabilizers, lubricants, antioxidants, flame retardants, antistatic agents, ultraviolet absorbers, or coloring pigments, depending on the application and use conditions. Example 1 100 parts by weight of vinyl chloride resin (SS-110, manufactured by Nippon PVC Sales Co., Ltd.) and 100 parts by weight of VIOSORB590 (manufactured by Kyodo Yakuhin Co., Ltd.) (Example 1), 70 Parts by weight (Example 2) and 30 parts by weight (Example 3), and these were charged into a roll set at 160 ° C. and kneaded. The kneaded material is sandwiched between dies heated to 180 ° C. and heated for 180 seconds, and then pressed with a press at a pressure of 80 kg ′ fZcm ² for 30 seconds to form a sheet having a thickness of 1 mm. The obtained sheet is cut into a dimension of 67 mm x 9 mm for loss tangent t anc5 measurement, and used as a test piece. In addition, a test piece of the vinyl chloride resin alone was molded in the same manner as Comparative Example 1 to obtain a test piece. The loss tangent tan (5 was measured for the test pieces of Examples 1 to 3 and Comparative Example 1. The loss tangent t and was measured using a dynamic viscoelasticity measurement test apparatus (Rheovibron DD V-25FP, Orientec Co., Ltd.). The measurement results are shown in Fig. 1. From Fig. 1, the compositions of Examples 1 to 3 have extremely low vibrational energy-absorbing performance as compared with the vinyl resin of Comparative Example 1 alone. In particular, the compositions of Examples 1 and 2 have excessively high loss tangents t anc5, and cannot be measured 2 Example 3 in which 30 parts by weight of HPMMB is blended Even with the composition of Example 1, the maximum value of the loss tangent t and is 2.5, which indicates that the composition has more than twice the performance of that of Comparative Example 1. For compositions 1-3, the temperature at which the loss tangent t anc5 is the maximum, regardless of the amount of 2HP MMB, It does not move and it is noted that the temperature is around 100 ° C. Next, 100 parts by weight of 2HMBP (VI OSORB 520, manufactured by Kyodo Yakuhin Co., Ltd.) (Example 4), 70 parts by weight ( Specimens were prepared in the same manner as in Examples 1 to 3, except that they were blended in the respective amounts of Example 5) and 30 parts by weight (Example 6). The tangent t an (5 was measured. The results are shown in FIG. 2. From FIG. 2, the maximum values of the loss tangent tan 5 in the compositions of Examples 4 to 6 were 1.7 to 1.8 in all cases. In the compositions of Examples 4 to 6, the amount of 2HMBP was increased. It can be seen that the maximum value of the loss tangent t an <5 does not change much, but the temperature at which the loss tangent t an 5 becomes maximum moves to the lower temperature side. Next, 100 parts by weight (Example 7), 70 parts by weight (Example 8), and 30 parts by weight (Example 9) of 2HBMPCB (VI OSORB 550, manufactured by Kyodo Yakuhin Co., Ltd.) were blended. Except for the above, test pieces were prepared in the same manner as in Examples 1 to 3, and their loss tangents t an (5) were measured together with Comparative Example 1 using only vinyl resin. The results are shown in FIG. Therefore, the loss tangent t an (5) of each of the compositions of Examples 9 to 9 is around 2.0, and the vibration energy absorption performance is about twice that of Comparative Example 1. In addition, in the compositions of Examples 7 to 9, the temperature at which the loss tangent t and becomes maximum is in the range of 80 to 90 ° C. regardless of the amount of 2HMBP. , 2HDBPCB (VI OSORB 580, manufactured by Kyodo Yakuhin) in 100 parts by weight (Example 10), 70 parts by weight (Example 11), 30 parts by weight (Example 12) Specimens were prepared in the same manner as in Examples 1 to 3 except that they were blended, and their loss tangents t an (5 were measured together with Comparative Example 1 using only vinyl resin. The results are shown in FIG. 4 shows that the maximum values of the loss tangents t an における in the compositions of Examples 10 to 12 all have vibration energy absorption performances exceeding those of Comparative Example 1. 2H DBPCB It is noted that ECDPA (VIOSORB910, manufactured by Kyodo Yakuhin Co., Ltd.) is 100 parts by weight (Example 13), 70 parts by weight (Example 14), 30 parts by weight ( Specimens were prepared in the same manner as in Examples 1 to 3 except that they were blended in the respective amounts of Example 15), and their loss tangents t an (5) were measured together with Comparative Example 1 using only vinyl resin. The result This is shown in FIG. From FIG. 5, it can be seen that the maximum value of the loss tangent t an (5 in the compositions of Examples 13 to 15 is gradually increased as the amount of ECDPA is increased, while the loss tangent tan (5 is the maximum value. It can be seen that the temperature is also moving to the low temperature side Next, 100 parts by weight of MBTS (Soxinol DM, manufactured by Sumitomo Chemical Co., Ltd.) (Example 16), 70 parts by weight (Example 17), 30 parts by weight Specimens were prepared in the same manner as in Examples 1 to 3 except that they were blended in the respective amounts of parts (Example 18), and their loss tangents t an (5 were measured together with Comparative Example 1 using only vinyl resin. The results are shown in Fig. 6. From Fig. 6, the loss tangent tan (the maximum value of 5 in the compositions of Examples 16 to 18 was 1.6 to 1.7 in all cases, indicating that sufficient results were obtained. It can be seen that it has vibration energy absorption performance, and the maximum value of the loss tangent ta depends on the amount of MBTS. It can be seen that the temperature at which the loss tangent tanc5 reaches a maximum moves to a lower temperature side as the blending amount increases, and then the CBS (Soxinol CZ, Sumitomo Chemical Co., Ltd.) The test pieces were prepared in the same manner as in Examples 1 to 3, except that 100 parts by weight (Example 19), 70 parts by weight (Example 20), and 30 parts by weight (Example 21) were mixed. The samples were prepared and their loss tangents t and were measured together with Comparative Example 1 of only vinyl resin.The results are shown in Fig. 7. From Fig. 7, the loss tangents t an ( The maximum value of 5 is 1.7 to 2.2 in each case, and it can be seen that the temperature increases as the compounding amount of CBS increases, and the temperature at which the maximum loss tangent ta nc5 moves to the lower temperature side. Next, 100 parts by weight of BBS (NSG, manufactured by Sanshin Chemical Industry Co., Ltd.) (Example 2) 2), 70 parts by weight (Example 23), and 30 parts by weight (Example 24) except that the respective amounts were blended, a test piece was prepared in the same manner as in Examples 1 to 3, and only the vinyl resin was used. Together with Comparative Example 1, their loss tangents t anc were measured. The result is shown in FIG. From FIG. 8, the maximum value of the loss tangent t anc in the compositions of Examples 22 to 24 is 1.8 to 2.3 in each case, and increases as the blending amount of BBS increases, and the loss tangent tan 0 increases. It can be seen that the maximum temperature has shifted to the lower temperature side. Next, 100 parts by weight (Example 25), 70 parts by weight (Example 26), and 30 parts by weight (Example 27) of DPBS (DIB, manufactured by Sanshin Chemical Industry Co., Ltd.) were distributed. Test pieces were prepared in the same manner as in Examples 1 to 3 except that they were combined, and their loss tangents t an (5) were measured together with Comparative Example 1 using only vinyl resin. The results are shown in FIG. From FIG. 9, it can be seen that the loss tangent t an (5 in the compositions of Examples 22 to 24 is almost the same as 1.6 to 1.8 regardless of the amount of DPBS, regardless of the amount of DPBS. As the blending amount increases, it can be seen that the loss tangent t an (the temperature at which the maximum value of 5 moves to the lower temperature side. Then, 100 weight of vinyl chloride resin (SS-110, manufactured by Nippon PVC Sales Co., Ltd.) Parts by weight, 50 parts by weight of N, N-dicyclohexylbenzothiaziruyl 2-sulfenamide (Sansera I DZ, manufactured by Sanshin Chemical Industry Co., Ltd.) (Example 28), MBT (Sancera M, manufactured by Sanshin Chemical Industry Co., Ltd.) (Example 29), and MBTS (Sancera DM, manufactured by Sanshin Chemical Industry Co., Ltd.) (Example 33) The mixture was put into a roll set at 160 ° C and kneaded, and the resulting kneaded material was sandwiched between molds heated to 180 ° C and heated for 180 seconds, and then 80 kg · / cm Press for 30 seconds with a pressure of ² to form a sheet with a thickness of 1 mm Cut the obtained sheet into 67 mm x 9 mm dimensions for measurement of loss factor, and use it as a test piece. A sample of Comparative Example 1 was molded in the same manner as Comparative Example 1 to obtain a test piece. The test pieces of Examples 29 to 30 and Comparative Example 1 were measured in the same manner as in Examples 1 to 3, and the measurement results are shown in FIG. From FIG. 10, it can be seen that the vinyl chloride-based vibration damping resins of Examples 28 to 30 have much better vibration energy absorption performance than the vinyl resin of Comparative Example 1. In particular, it can be seen that the resin of Example 28 has twice or more the performance of Comparative Example 1. Next, in the above Examples 28 to 30, the amount of the compound containing a mercaptobenzozothiazyl group was increased in the range of 0 to 50 parts by weight with respect to 100 parts by weight of the biel chloride resin. The degree of change in the loss tangent t an (5) was examined. The results are shown in Fig. 11. In the same manner as in the previous experiment, only the vinyl chloride resin was measured as Comparative Example 1. t an (was also determined in the same manner as in the previous experiment. From FIG. 11, it can be seen that the value of the loss tangent t an (5 increases as the compounding amount of the compound containing a mercaptobenzozothiazyl group increases. Furthermore, it was confirmed that the loss tangent t an (5 was surely increased as the compounding amount of the compound containing a mercaptobenzothiazyl group was increased from 0 to 50 parts by weight. Agricultural as PVC A 100 parts by weight (38% by weight) of recycled PVC resin (manufactured by Yamamoto Shoten), 78 parts by weight (30% by weight) of DCHP (DCHP special grade, manufactured by Wako Reagents Co., Ltd.), NBR (recycled NBR) 20 parts by weight (8% by weight) manufactured by Suzuko Seisakusho Co., Ltd., 52 parts by weight (20% by weight) of calcium carbonate (# 250, manufactured by Ohanaya Co., Ltd.) (SS-110, manufactured by Nippon PVC Sales Co., Ltd.) at a ratio of 10 parts by weight (4% by weight), and these were charged into a roll set at 160 ° C. and kneaded. the, 180 ° heated sandwiched therebetween 180 seconds between heated mold to a C, 30 seconds pressurized with 80 pressure kg · f cm ² in this after press, 1 mm of It was sheeted to thickness. The obtained sheet was cut into a size of 67 mm X 9 mm for loss tangent measurement to obtain a test piece (Example 31). Recycled agricultural vinyl chloride resin used in Example 31 / D CHP / NB R / Calcium carbonate / vinyl chloride resin 100 parts by weight / 95 parts by weight / 20 parts by weight / 63 parts by weight / 38 parts by weight (32 (% By weight / 30% by weight / 6% by weight / 20% by weight / 12% by weight) in the same manner as in Example 31 except that the test piece (Example 32) was obtained. Recycled agricultural vinyl chloride resin used in Example 31 ZDCHP / NBR / Calcium carbonate 100 parts by weight / 122 parts by weight of vinyl chloride resin Z 20 parts by weight 81 parts by weight / 83 parts by weight (25% by weight / 30% (Weight% / 5 weight% / 20 weight% / 20 weight%) in the same manner as in Example 31 except that the test piece (Example 33) was obtained. Recycled agricultural polyvinyl chloride resin used in Example 31 ZD CH P / NBR / calcium carbonate / vinyl chloride resin 100 parts by weight / 177 parts by weight / 20 parts by weight / 188 parts by weight / 175 parts by weight (17 parts by weight % / 30% by weight, Z3% by weight, 20% by weight / 30% by weight), and a test piece (Example 34) was obtained in the same manner as in Example 31. A test piece (Comparative Example 2) was obtained in the same manner as in Example 31 using only the recycled vinyl chloride resin for agriculture used in Example 31. Recycled agricultural vinyl chloride resin used in Example 31, DCHP and calcium carbonate were blended at a ratio of 100 parts by weight / 60 parts by weight / 40 parts by weight (50% by weight / 30% by weight / 20% by weight). A test piece (Comparative Example 3) was obtained in the same manner as in Example 31 except that the test was performed. The loss tangent t an (5 was measured for the test pieces of Examples 31 to 34 and Comparative Examples 2 and 3 in the same manner as in Examples 1 to 3. The measurement results are shown in FIG.

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From FIG. 12, it can be seen that the test pieces of Examples 31 to 34 have much better vibration energy-absorbing performance than those of Comparative Example 2. Also, when comparing the test piece of Example 31 with that of Comparative Example 3, the vibration energy absorption performance is almost the same, but when looking at the temperature range where the loss tangent ta nc ^ is 1.6 or more, Comparative Example 3 has a temperature range of about 11 to about 34 ° C., whereas Example 31 has a temperature range of about 11 to 45 ° C., and its temperature range is greatly expanded from 23 ° C. to 34 ° C. I understand that

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In the test piece of Example 31, the temperature at which the loss tangent t an <5 was the maximum was about 20 ° C., but the amount of vinyl chloride B was 38 parts by weight (12% by weight) and 83 parts by weight (20% by weight) and 175 parts by weight (30 parts by weight) The temperatures at which the loss tangent t anc5 of Examples 32 to 34 is maximum are about 27 ° C, about 33 ° C, and about 43 ° C. It is.

Claims

Scope of word blue

1. It is soluble in vinyl chloride resin, has a large number of cyclic structures in the molecule, and the molecular weight of the cyclic structure portion accounts for 50% or more of the molecular weight of the whole molecule A vinyl chloride-based vibration damping resin composition _c characterized by containing a compound

2. The vinyl chloride-based vibration damping resin composition according to claim 1, wherein a compound having a benzotriazole group represented by the following formula is blended with the vinyl chloride-based resin.

3. The compound having a benzotriazole group is 2- {2'-hydroxy-3 '-(3 ", 4", 5 ", 6" tetrahydrophtalidimidemethyl) 1-5'-methylphenyl }-The vinyl chloride-based vibration damping resin composition according to claim 2, characterized in that it is benzotriazole.

4. The vinyl chloride-based compound according to claim 2, wherein the compound having a benzotriazole group is 2- {2'-one-open-mouth xy-5'-methylphenyl} -benzotriazole. Vibrating resin composition.

5. The compound having a benzotriazole group is 2- {2′-hydroxy-3′-t-butyl-5′-methylphenyl} -15-chlorobenzototriazole, according to claim 2, characterized in that: Vinyl chloride-based vibration damping resin composition.

6. Make sure that the compound having a benzotriazole group is 2- {2'-hydroxy-3 ', 5'-di-t-butylphenyl} -1-5-benzobenzotriazole. 3. The vinyl chloride-based vibration damping resin composition according to claim 2, wherein:

7. The vinyl chloride-based vibration-damping resin composition according to claim 1, wherein a compound having a diphenylacrylate group represented by the following formula is blended with the vinyl chloride-based resin.

8. The vinyl chloride-based vibration damping resin composition according to claim 1, wherein a compound containing a mercaptobenzozothiazyl group represented by the following formula is blended with the vinyl chloride-based resin.

9. The vinyl chloride-based vibration-damping resin composition according to claim 8, wherein the compound containing a mercaptobenzozothiazyl group is N, N-dicyclohexylbenzothiaziru-2-sulfenamide.

10. The vinyl chloride-based vibration-damping resin composition according to claim 8, wherein the compound containing a mercaptobenzozothiazyl group is 2-mercaptobenzothiazole.

11. The vinyl chloride-based vibration-damping resin composition according to claim 8, wherein the compound containing a mercaptobenzothiazyl group is dibenzothiazyl sulfide.

1 &