CN1445279A - Thermoplastic elastomer made from nylon/ethylene propylene rubber and its preparing method - Google Patents

Thermoplastic elastomer made from nylon/ethylene propylene rubber and its preparing method Download PDF

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Publication number
CN1445279A
CN1445279A CN 03116292 CN03116292A CN1445279A CN 1445279 A CN1445279 A CN 1445279A CN 03116292 CN03116292 CN 03116292 CN 03116292 A CN03116292 A CN 03116292A CN 1445279 A CN1445279 A CN 1445279A
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cross
nylon
propylene rubber
linking system
ethylene
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CN 03116292
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CN1202168C (en
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刘欣
黄华
彭宗林
张勇
张隐西
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Shanghai Jiaotong University
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Shanghai Jiaotong University
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Abstract

A thermoplastic nylon/ethylene propylene rubber elastomer is prepared from ethylene propylene rubber, nylon, chlorinated polyethylene as compatibilizer, and cross-linking system through mixing nylon with ethylene propylene rubber, adding said compatibilizer, and pugging in banburying machine or screw extruding for shearing while adding sulfur (or peroxide) cross-linking agent for sulfurizing said rubber. Its advantages are simple process, high solvent resistance and low cost.

Description

Nylon/ethylene-propylene rubber(EPR) thermoplastic elastomer and preparation method thereof
Technical field:
The present invention relates to nylon/ethylene-propylene rubber(EPR) thermoplastic elastomer of a kind of full dynamic crosslinking and preparation method thereof.
Background technology:
Have thermoplasticity and elastic blend polymer concurrently and generally be by with a kind of mode blend in elastomerics closely and equably is distributed to thermoplastics mutually with discontinuous particulate the external phase being obtained.The early stage elastomeric research work of relevant commixed type sulfurized is found in USP 3,037,954, this piece document discloses static vulcanization technology and dynamic vulcanization technology, in dynamic vulcanization technology, vulcanizable elastomerics is dispersed in the resinoid thermoplastic polymer, and makes the elastomerics sulfuration in continuously stirring with when shearing blend polymer.The blend (blend of vulcanized rubber or dynamic vulcanization) that produces is the microgel dispersion of a kind of elastomerics in the base material of unvulcanized thermoplastic polymer (for example polypropylene), for example isoprene-isobutylene rubber, chloro isoprene-isobutylene rubber, polyhutadiene or polyisobutene dispersion therein, thus make this technology obtain significant development.
USP.5,525,668 and USP.5,397,835 relate to a kind of preparation method of novel thermoplastic elastomer.Be will contain functionalized EPM or EPDM the polyolefin elastomer dispersion of materials in polyamide resin, then with elastomerics phase sulfurized process.Elastomerics with trickle particle form be dispersed in polyamide resin mutually in, the mixture integral body of formation has thermoplastic characteristics.The blend that obtains can be used to prepare elastomer material and not need to add in addition independent sulfidation one.
European polymer journal 2002, v38,857-61 has reported with terpolyamide and ethylene-propylene rubber(EPR) and has prepared the dynamic vulcanization blending thermoplastic elastomer, employed compatilizer is the functionalized ethylene-propylene rubber(EPR) of maleic anhydride, and prepared thermoplastic elastic material has the good mechanical performance.Yet the ethylene-propylene rubber(EPR) of maleic anhydride graft makes uncomfortable reactions such as producers shed tears, allergy because the existence of anhydride group has the strong stimulation effect to human body, and in addition, the ethylene-propylene rubber(EPR) of maleic anhydride graft costs an arm and a leg.
Summary of the invention:
The purpose of this invention is to provide nylon/ethylene-propylene rubber(EPR) thermoplastic elastomer of a kind of physicals with improvement and superior processability and preparation method thereof.
The present invention adopts chlorinatedpolyethylene as compatilizer, chlorinatedpolyethylene has the advantage that has no side effect, chlorinatedpolyethylene is cheap, and to adopt chlorinatedpolyethylene be that the nylon of compatilizer preparation is that the nylon that compatilizer prepares is compared with ethylene-propylene rubber(EPR) dynamic vulcanization blending thermoplastic elastomer with the ethylene-propylene rubber(EPR) dynamic vulcanization blending thermoplastic elastomer and the ethylene-propylene rubber(EPR) of maleic anhydride graft, and mechanical property further improves.
Nylon of the present invention/ethylene-propylene rubber(EPR) thermoplastic elastomer is made up of ethylene-propylene rubber(EPR), nylon, compatilizer, cross-linking system, wherein ethylene-propylene rubber(EPR) is 100 weight parts, the nylon consumption is the 25-1000 weight part, and the compatilizer consumption is the 5-900 weight part, and the cross-linking system consumption is the 2-20 weight part.
Ethylene-propylene rubber(EPR) of the present invention is that ethylidene norbornene is the 3rd monomeric terpolymer EP rubber, wherein, be abbreviated as EPDM by containing the 50-65% vinyl monomer in the gross weight, the propylene monomer of 30-40%, ethylidene norbornene and the derivative thereof of 5%-10%.
Nylon of the present invention is the terpolyamide that contains caprolactam monomer, hexanediamine hexanodioic acid monomer, the formation of decamethylene diamine sebacic acid monomer copolymerization, copolymer nylon is abbreviated as PA for the comonomer weight ratio is the terpolymer of caprolactam monomer/hexanediamine hexanodioic acid monomer/decamethylene diamine sebacic acid monomer=20/10/70.
Compatilizer of the present invention is that cl content is 35% ± 5 chlorinatedpolyethylene, is abbreviated as CPE;
Cross-linking system of the present invention is sulfur cross-linking system I, peroxide cross-linking system II, III.
(1) component of sulfur cross-linking system I is counted for 100 parts with rubber weight:
(A) sulphur is abbreviated as S 1-10 part;
(B) zinc oxide is abbreviated as ZnO 2-20 part;
(C) stearic acid is abbreviated as SA 1-5 part;
(D) tetramethyl-thiuram disulfide is abbreviated as TMTD 0.5-2 part;
(E) dibenzothiazyl disulfide is abbreviated as DM 0.2-1.0 part;
(2) component of peroxide cross-linking system II is counted for 100 parts with rubber weight:
(A) 2.5-dimethyl-2.5-di-t-butyl peroxy hexane is abbreviated as two 2,5 1-10 parts;
(B) penylene bismaleimides between is abbreviated as HVA-2 0.5-5 part;
(3) component of peroxide cross-linking system III is counted for 100 parts with rubber weight:
(A) dicumyl peroxide is abbreviated as DCP 1-10 part;
(B) penylene bismaleimides 0.5-5 part between;
Nylon of the present invention/ethylene-propylene rubber(EPR) process for preparation of thermoplastic elastomer, in Banbury mixer, mill or screw extrusion press, under 150-200 ℃ blending temperature, add following composition: ethylene-propylene rubber(EPR), terpolyamide, compatilizer chlorinatedpolyethylene, cross-linking system, after blend 5-8 minute, blend is pulverized, and then blend 4-5 minute, obtained the nylon/ethylene-propylene rubber(EPR) blending thermoplastic elastomer of high-performance dynamic vulcanization.
Nylon of the present invention/ethylene-propylene rubber(EPR) thermoplastic elastomer is to adopt the chlorinatedpolyethylene compatilizer to join to improve nylon and ethylene-propylene rubber(EPR) comixing compatibility in nylon/ethylene-propylene rubber(EPR) blend, when shearing, adding sulfur cross-linking system or peroxide cross-linking system vulcanizes ethylene-propylene rubber(EPR), phase reversion takes place, be scattered in rubber external phase by nylon and change the pattern that crosslinked micron order rubber particles is scattered in nylon external phase into, obtain the high performance nylon of high rubber content/ethylene-propylene rubber(EPR) blending thermoplastic elastomer.Adopt the thermoplastic elastic body processing technology of this method preparation simple, production cost is lower, and has the performance of good chemically-resistant solvent.Can be used for preparing high-intensity rubber item.
The salient features of nylon/ethylene-propylene rubber(EPR) thermoplastic elastomer that the present invention is prepared is as follows:
Hardness: (Shao Shi A) 65-90
100% tensile modulus: 3.5-8MPa
Tensile strength: 6.0-45MPa
Elongation at break: 104-466%
Tension set: 10-100%
Life-time service temperature :-30-135 ℃
Short-term use temperature: 150 ℃
The present invention compares with common non-tire rubber and has the following advantages: do not need sulfuration, complete processing adopts the thermoplastics working method (to extrude, injection and mold pressing etc.), save energy, save resource (scrap stock are recyclable), save device resource, shorten the production cycle, raise labour productivity, the present invention compares with the similar complete crosslinked promotion cross-linking system EPT rubber blend of rubber thermoplastic elastic hot in nature, has better resistance to elevated temperatures, organic solvent-resistant and ageing-resistant performance.The smooth in appearance of goods is smooth.When using superoxide to make vulcanizing agent, do not corrode metallic substance such as copper, also can be as electric wire industrial insulating material and other non-tire rubber goodses.
Embodiment:
Following embodiment further specifies of the present invention, rather than limits the scope of the invention.
The testing standard that embodiment adopted:
Tensile strength GB527-83,
Hardness GB531-83.
Embodiment 1: closed rubber and plastic mixing roll is heated to 180 ℃, EPDM, CPE, PA in the listed prescription of table 1 are put in the Banbury mixer, after treating that the material melting mixes, add various cross-linking systems respectively, 80 rev/mins of rotor speeds, after the blend 8 minutes, take out mixture and pulverize, blend was uniformly dispersed dispersion particle in 4 minutes again.
Table 1 adopts the performance of the thermoplastic elastomer of different cross-linking systems:
Prescription composition/weight part 123
EPDM 80 80 80
PA 54 54 54
CPE 20 20 20
S 2 1
ZnO 5
SA 2
DM 0.5
TMTD 1
Two 2,51
DCP 3
HVA-2 1 0.5
Mechanical property
Tensile strength (MPa) 15.3 11.7 14.8
Elongation at break (%) 309 190 227
Hardness (shore A) 89 92 82
Embodiment 2: closed rubber and plastic mixing roll is heated to 180 ℃, EPDM, CPE, PA in the listed prescription of table 2 are put in the Banbury mixer, after treating that the material melting mixes, the Sulfur cross-linking system that adds different amounts respectively, 80 rev/mins of rotor speeds, after the blend 8 minutes, take out mixture and pulverize, blend was uniformly dispersed dispersion particle in 4 minutes again.
Table 2: sulfur consumption is to the performance impact of thermoplastic elastomer
Prescription composition/weight part
EPDM 80 80 80 80 80 80
PA 54 54 54 54 54 54
CPE 20 20 20 20 20 20
S 0 0.5 1 1.5 2 2.5
ZnO 5 5 5 5 5 5
SA 2 2 2 2 2 2
DM 0.5 0.5 0.5 0.5 0.5 0.5
TMTD 1 1 1 1 1 1
Mechanical property
Tensile strength (MPa) 3.2 7.3 13 13.2 15.3 12
Elongation at break (%) 104 280 320 310 309 253
Hardness (shore A) 81 83 83 85 89 90
Tension set (%) 2 19 15 7 28 11
Embodiment 3: closed rubber and plastic mixing roll is heated to 180 ℃, EPDM, CPE, PA in the listed prescription of table 3 are put in the Banbury mixer, add the Sulfur cross-linking system again, after treating that the material melting mixes, 80 rev/mins of rotor speeds, blend is after 8 minutes, the taking-up mixture is pulverized, and blend was uniformly dispersed dispersion particle in 4 minutes again.
Table 3: Compatibilizer C PE consumption is to the influence prescription composition/weight part of thermoplastic elastomer
EPDM 100 90 80 70 50 30 20 10 0
PA 54 54 54 54 54 54 54 54 54
CPE 0 10 20 30 50 70 80 90 100
S 2 2 2 2 2 2 2 2 2
ZnO 5 5 5 5 5 5 5 5 5
SA 2 2 2 2 2 2 2 2 2
DM 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
TMTD 111111111 mechanical property tensile strength, (MPa) 6.6 11.9 15.5 16 17.8 16.2 20 21.6 24.7 elongation at breaks, (%) 163 286 309 352 360 368 365 384 466 hardness, (shore A) 88 88 89 87 88 83 83 83 91 tension sets, (%) 11 22 28 22 33 38 40 42 44
Embodiment 4: closed rubber and plastic mixing roll is heated to 180 ℃, EPDM, CPE, PA in the listed prescription of table 4 are put in the Banbury mixer, add the Sulfur cross-linking system again, after treating that the material melting mixes, 80 rev/mins of rotor speeds, blend is after 8 minutes, the taking-up mixture is pulverized, and blend was uniformly dispersed dispersion particle in 4 minutes again.
Table 4: the nylon consumption is to the influence prescription composition/weight part of thermoplastic elastomer
EPDM 80 80 80 80 80 80 80 80 80
PA 33 43 54 66 100 150 233 400 900
CPE 20 20 20 20 20 20 20 20 20
S 2 2 2 2 2 2 2 2 2
ZnO 5 5 5 5 5 5 5 5 5
SA 2 2 2 2 2 2 2 2 2
DM 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
TMTD 111111111 mechanical property tensile strength, (MPa) 9.3 10.8 15.3 11.8 12 12.6 22.5 28.6 46 elongation at breaks, (%) 220 278 309 288 189 162 171 345 411 hardness, (shore A) 82 86 89 89 94 95 96 96 96 tension sets, (%) 4 12 28 24 26 28 100 156 200

Claims (3)

1. nylon/ethylene-propylene rubber(EPR) thermoplastic elastomer is made up of ethylene-propylene rubber(EPR) and nylon, compatilizer, cross-linking system, it is characterized in that:
(1) ethylene-propylene rubber(EPR) in the thermoplastic elastomer is that ethylidene norbornene is the 3rd monomeric terpolymer EP rubber, and nylon is the terpolyamide that contains caprolactam monomer, hexanediamine hexanodioic acid monomer, the formation of decamethylene diamine sebacic acid monomer copolymerization; The comonomer weight ratio is the terpolymer of caprolactam monomer/hexanediamine hexanodioic acid monomer/decamethylene diamine sebacic acid monomer=20/10/70 in the terpolyamide;
(2) cross-linking system is the sulfur cross-linking system, peroxide cross-linking system;
(3) compatilizer is that cl content is 35% ± 5 chlorinatedpolyethylene;
(4) the composition weight umber of thermoplastic elastomer is:
(A) ethylene-propylene rubber(EPR) is 100 parts;
(B) nylon 25-1000 part;
(C) compatilizer 5-900 part;
(D) cross-linking system is 2 parts-20 parts.
2. a kind of nylon according to claim 1/ethylene-propylene rubber(EPR) thermoplastic elastomer is characterized in that:
Employing sulphur is that the sulfur cross-linking system I and the employing superoxide of main body is the peroxide cross-linking system II of main body, III:
(1) component of cross-linking system I is counted for 100 parts with rubber weight:
(A) sulphur 1-10 part;
(B) zinc oxide 2-20 part;
(C) stearic acid 1-5 part;
(D) tetramethyl-thiuram disulfide 0.5-2 part;
(E) dibenzothiazyl disulfide 0.2-1.0 part;
(2) component of cross-linking system II is counted for 100 parts with rubber weight:
(A) 2.5-dimethyl-2.5-di-t-butyl peroxy hexane 1-10 part;
(B) penylene bismaleimides 0.5-5 part between;
(3) component of cross-linking system III is counted for 100 parts with rubber weight:
(A) dicumyl peroxide 1-10 part;
(B) penylene bismaleimides 0.5-5 part between;
3. nylon/ethylene-propylene rubber(EPR) process for preparation of thermoplastic elastomer is characterized in that in Banbury mixer, mill or screw extrusion press, under 150-200 ℃ blending temperature, adds following composition: ethylene-propylene rubber(EPR); Terpolyamide; The expanding material chlorinatedpolyethylene; Cross-linking system; After blend 5-8 minute, blend is pulverized, and then blend 4-5 minute, obtained the nylon/ethylene-propylene rubber(EPR) blending thermoplastic elastomer of high-performance dynamic vulcanization.
CN 03116292 2003-04-10 2003-04-10 Thermoplastic elastomer made from nylon/ethylene propylene rubber and its preparing method Expired - Fee Related CN1202168C (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101205339B (en) * 2006-12-21 2010-05-19 无锡江南电缆有限公司 Ethylene-propylene rubber for electric wire and cable
CN101205336B (en) * 2006-12-18 2010-06-16 上海华向橡胶制品有限公司 Composition for manufacturing low-hardness rubber material
CN101824190A (en) * 2010-05-26 2010-09-08 苏州特威塑胶有限公司 Polar ethylene-propylene-diene monomer/polypropylene thermoplastic elastomer and preparation method thereof
CN102964702A (en) * 2012-10-24 2013-03-13 山东科技大学 Nylon/brominated butyl rubber thermoplastic elastomer and preparation method as well as application thereof
CN103077771A (en) * 2013-02-04 2013-05-01 华通古河(唐山)线缆有限公司 High-metal-adhesiveness ethylene propylene rubber insulated cable and preparation method thereof
CN103483692A (en) * 2013-08-28 2014-01-01 绿宝电缆(集团)有限公司 Railway signal cable sheathing material
CN103483693A (en) * 2013-08-28 2014-01-01 绿宝电缆(集团)有限公司 Cable material or oil submerged pump
CN101902101B (en) * 2009-05-27 2014-04-16 深圳市沃尔核材股份有限公司 EPDM cold shrinking power cable accessory and preparation method thereof
CN103923403A (en) * 2014-05-10 2014-07-16 任新年 Zero-halogen low-smoke and flame-retardant rubber for electric wires and cables and preparing method for zero-halogen low-smoke and flame-retardant rubber
CN105778487A (en) * 2016-05-11 2016-07-20 合肥工业大学 High-toughness and high-strength PA6/EPDM-g-MAH alloy and preparation method thereof
CN107987516A (en) * 2017-12-04 2018-05-04 上海至正道化高分子材料股份有限公司 A kind of TPU/ terpolyamides composite halogen-free fire-resistant cable material and preparation method thereof
CN110294927A (en) * 2018-03-23 2019-10-01 苏州纳绎博纳米科技有限公司 Thermoplastic nylon elastomer and preparation method thereof
CN110857357A (en) * 2018-08-24 2020-03-03 天津常春汽车技术有限公司 High-strength impact-resistant composite material for automotive interior parts and preparation method thereof

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101205336B (en) * 2006-12-18 2010-06-16 上海华向橡胶制品有限公司 Composition for manufacturing low-hardness rubber material
CN101205339B (en) * 2006-12-21 2010-05-19 无锡江南电缆有限公司 Ethylene-propylene rubber for electric wire and cable
CN101902101B (en) * 2009-05-27 2014-04-16 深圳市沃尔核材股份有限公司 EPDM cold shrinking power cable accessory and preparation method thereof
CN101824190A (en) * 2010-05-26 2010-09-08 苏州特威塑胶有限公司 Polar ethylene-propylene-diene monomer/polypropylene thermoplastic elastomer and preparation method thereof
CN101824190B (en) * 2010-05-26 2012-04-25 苏州特威塑胶有限公司 Polar ethylene-propylene-diene monomer/polypropylene thermoplastic elastomer and preparation method thereof
CN102964702A (en) * 2012-10-24 2013-03-13 山东科技大学 Nylon/brominated butyl rubber thermoplastic elastomer and preparation method as well as application thereof
CN103077771A (en) * 2013-02-04 2013-05-01 华通古河(唐山)线缆有限公司 High-metal-adhesiveness ethylene propylene rubber insulated cable and preparation method thereof
CN103077771B (en) * 2013-02-04 2015-03-25 河北华通线缆集团有限公司 High-metal-adhesiveness ethylene propylene rubber insulated cable and preparation method thereof
CN103483692A (en) * 2013-08-28 2014-01-01 绿宝电缆(集团)有限公司 Railway signal cable sheathing material
CN103483693A (en) * 2013-08-28 2014-01-01 绿宝电缆(集团)有限公司 Cable material or oil submerged pump
CN103483693B (en) * 2013-08-28 2016-04-13 绿宝电缆(集团)有限公司 A kind of electric cable of submersible pump material
CN103483692B (en) * 2013-08-28 2016-03-02 绿宝电缆(集团)有限公司 A kind of railway signal cable sheath material
CN103923403B (en) * 2014-05-10 2016-03-30 任新年 A kind of electric wire LSOH anti-flaming rubber and preparation method thereof
CN103923403A (en) * 2014-05-10 2014-07-16 任新年 Zero-halogen low-smoke and flame-retardant rubber for electric wires and cables and preparing method for zero-halogen low-smoke and flame-retardant rubber
CN105778487A (en) * 2016-05-11 2016-07-20 合肥工业大学 High-toughness and high-strength PA6/EPDM-g-MAH alloy and preparation method thereof
CN107987516A (en) * 2017-12-04 2018-05-04 上海至正道化高分子材料股份有限公司 A kind of TPU/ terpolyamides composite halogen-free fire-resistant cable material and preparation method thereof
CN107987516B (en) * 2017-12-04 2020-12-15 上海至正新材料有限公司 TPU/terpolymer nylon composite halogen-free flame-retardant cable material and preparation method thereof
CN110294927A (en) * 2018-03-23 2019-10-01 苏州纳绎博纳米科技有限公司 Thermoplastic nylon elastomer and preparation method thereof
CN110857357A (en) * 2018-08-24 2020-03-03 天津常春汽车技术有限公司 High-strength impact-resistant composite material for automotive interior parts and preparation method thereof

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