WO2024067890A1 - 一种再生橡胶材料的功能化改性及其在安全手套中的应用 - Google Patents
一种再生橡胶材料的功能化改性及其在安全手套中的应用 Download PDFInfo
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 50
- 239000000463 material Substances 0.000 title claims abstract description 30
- 238000012986 modification Methods 0.000 title claims abstract description 14
- 230000004048 modification Effects 0.000 title claims abstract description 14
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 41
- 150000002825 nitriles Chemical class 0.000 claims abstract description 30
- 229920002635 polyurethane Polymers 0.000 claims abstract description 24
- 239000004814 polyurethane Substances 0.000 claims abstract description 24
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 45
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 44
- VMNKHSPZIGIPLL-UHFFFAOYSA-N [3-hydroxy-2,2-bis(hydroxymethyl)propyl] dihydrogen phosphite Chemical compound OCC(CO)(CO)COP(O)O VMNKHSPZIGIPLL-UHFFFAOYSA-N 0.000 claims description 26
- 239000002904 solvent Substances 0.000 claims description 25
- 238000006243 chemical reaction Methods 0.000 claims description 23
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 16
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 15
- 239000012141 concentrate Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- -1 diaminoethoxy dipentaerythritol phosphite Chemical compound 0.000 claims description 10
- 239000004816 latex Substances 0.000 claims description 10
- 229920000126 latex Polymers 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- FNIFQOISPAAFQF-UHFFFAOYSA-N 4-(chloromethyl)benzaldehyde Chemical compound ClCC1=CC=C(C=O)C=C1 FNIFQOISPAAFQF-UHFFFAOYSA-N 0.000 claims description 8
- 229960000583 acetic acid Drugs 0.000 claims description 8
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 8
- 239000012362 glacial acetic acid Substances 0.000 claims description 8
- 239000002202 Polyethylene glycol Substances 0.000 claims description 7
- 229920001223 polyethylene glycol Polymers 0.000 claims description 7
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 claims description 6
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 claims description 6
- 235000021355 Stearic acid Nutrition 0.000 claims description 6
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 6
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 6
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 6
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 6
- 150000002466 imines Chemical class 0.000 claims description 6
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 6
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 6
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 6
- 239000008117 stearic acid Substances 0.000 claims description 6
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 6
- 238000004073 vulcanization Methods 0.000 claims description 6
- 239000003963 antioxidant agent Substances 0.000 claims description 5
- 230000003078 antioxidant effect Effects 0.000 claims description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 5
- 238000010992 reflux Methods 0.000 claims description 5
- NFPBWZOKGZKYRE-UHFFFAOYSA-N 2-propan-2-ylperoxypropane Chemical compound CC(C)OOC(C)C NFPBWZOKGZKYRE-UHFFFAOYSA-N 0.000 claims description 4
- KCXMKQUNVWSEMD-UHFFFAOYSA-N benzyl chloride Chemical compound ClCC1=CC=CC=C1 KCXMKQUNVWSEMD-UHFFFAOYSA-N 0.000 claims description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- OJPDDQSCZGTACX-UHFFFAOYSA-N 2-[n-(2-hydroxyethyl)anilino]ethanol Chemical compound OCCN(CCO)C1=CC=CC=C1 OJPDDQSCZGTACX-UHFFFAOYSA-N 0.000 claims description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000000376 reactant Substances 0.000 claims description 2
- 239000008096 xylene Substances 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 abstract description 9
- 239000002131 composite material Substances 0.000 abstract description 8
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 abstract description 4
- 238000011049 filling Methods 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 239000003607 modifier Substances 0.000 abstract description 2
- 238000005979 thermal decomposition reaction Methods 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 17
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000012153 distilled water Substances 0.000 description 8
- 238000001953 recrystallisation Methods 0.000 description 8
- 239000010410 layer Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 4
- 239000012044 organic layer Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- OUBMGJOQLXMSNT-UHFFFAOYSA-N N-isopropyl-N'-phenyl-p-phenylenediamine Chemical compound C1=CC(NC(C)C)=CC=C1NC1=CC=CC=C1 OUBMGJOQLXMSNT-UHFFFAOYSA-N 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005292 vacuum distillation Methods 0.000 description 2
- 239000004970 Chain extender Substances 0.000 description 1
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012776 electronic material Substances 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920006264 polyurethane film Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
- 238000002411 thermogravimetry Methods 0.000 description 1
- BDZBKCUKTQZUTL-UHFFFAOYSA-N triethyl phosphite Chemical compound CCOP(OCC)OCC BDZBKCUKTQZUTL-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
- C08L9/04—Latex
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Definitions
- the invention relates to the technical field of rubber materials, in particular to functional modification of recycled rubber materials and application of the same in safety gloves.
- nitrile rubber (CABN) has the advantages of good oil resistance and high wear resistance, and has broad application prospects in the fields of safety gloves, protective clothing, protective rubber shoes, etc. Improving the comprehensive properties of nitrile rubber such as mechanics and thermodynamics will help expand the practical application of nitrile rubber in protective products such as gloves; for example, patent CN112812261B prepares nitrile rubber-polyurethane composite gloves, and a layer of cationic weakly acidic water-based polyurethane film with antibacterial effect and conjugated ultraviolet light absorption effect is attached to the outside of the nitrile rubber base film.
- the gloves obtained have excellent properties such as oil resistance and weather resistance, resistance to bacterial penetration, and air permeability.
- nitrile rubber with polymer compounds can enhance its mechanical strength, anti-aging and other properties.
- hyperbranched dendritic polyamide-amine was synthesized and added to nitrile rubber as an antioxidant to improve the mechanical properties and anti-aging properties of nitrile rubber.
- the present invention aims to synthesize hyperbranched nitrile rubber polyurethane, blend and modify it with nitrile latex and recycled nitrile rubber, improve the mechanical properties and heat resistance of the rubber material, and expand the development and application of nitrile rubber in special protective products such as safety gloves.
- the present invention provides a functional modification of a recycled rubber material, which is applied in safety gloves to solve the problems of low mechanical properties and low heat resistance of recycled nitrile composite rubber gloves.
- the present invention provides the following technical solution: a method for functional modification of recycled rubber material, comprising the following steps:
- S1 100 parts by weight of nitrile latex, 15-35 parts by weight of regenerated nitrile rubber, hyperbranched nitrile rubber-polyurethane, 20-40 parts by weight of dioctyl phthalate are added to an open mill for thin passing, then 0.5-1.2 parts by weight of stearic acid, 0.6-1.5 parts by weight of antioxidant are added, after mixing evenly, 0.5-1 parts by weight of diisopropyl peroxide, 1-2 parts by weight of triallyl isocyanurate are added, thin passing, triangle packing is performed, and then sheeting is obtained to obtain mixed rubber.
- the amount of the hyperbranched nitrile rubber-polyurethane in S1 is 2-8% by weight of the nitrile latex.
- the vulcanization conditions in S2 are: vulcanization treatment for 20-40 minutes at a pressure of 8-12 MPa and a vulcanization temperature of 160-180°C.
- the preparation method of the hyperbranched nitrile rubber-polyurethane comprises the following steps:
- the molar ratio of diaminoethoxy dipentaerythritol phosphite to 4-chloromethylbenzaldehyde in S3 is 1:2.2-2.8.
- the amount of glacial acetic acid in S3 is 2-4% of the total weight of the reactants.
- the solvent in S4 is any one of ethyl acetate, tetrahydrofuran, toluene and xylene.
- the molar ratio of bis(chloromethylbenzenimide pentaerythritol phosphite) to diethanolamine in S4 is 1:2-2.4.
- the present invention has the following beneficial technical effects:
- the tetrahydroxy-functional bis(diethanolaminophenylimine pentaerythritol phosphite) was synthesized by reacting diaminoethoxybispentaerythritol phosphite with 4-chloromethylbenzaldehyde and diethanolamine in sequence.
- the tetrahydroxy-functional bis(diethanolaminophenylimine pentaerythritol phosphite) was used as a branching chain extender and then subjected to a hyperbranched polymerization reaction with hydroxy-terminated nitrile rubber, polyethylene glycol and 2,4-toluene diisocyanate to synthesize a hyperbranched nitrile rubber-polyurethane containing a bispirocyclic phosphate structure.
- Hyperbranched nitrile rubber-polyurethane is used as a filling modifier and blended with nitrile rubber and recycled nitrile rubber.
- the hyperbranched polyurethane has a three-dimensional branched network structure and contains nitrile rubber molecular chains in the main chain, so that the hyperbranched nitrile rubber-polyurethane has good interface compatibility with nitrile rubber and recycled nitrile rubber, and forms a three-dimensional cross-linked network with nitrile rubber and recycled nitrile rubber, thereby improving the tensile strength, tear strength and other mechanical properties of the recycled rubber composite material.
- Hyperbranched nitrile rubber-polyurethane contains a bispirocyclic phosphate structure with high flame retardancy and high thermal stability, which increases the thermal decomposition temperature and carbon yield of the recycled rubber composite material, exhibits higher heat resistance, and expands the practical application of recycled nitrile rubber composite materials in special protective products such as safety gloves.
- FIG. 1 is a hydrogen nuclear magnetic spectrum of bis(chloromethylphenylimide pentaerythritol phosphite) of Example 1.
- FIG. 2 is a hydrogen nuclear magnetic spectrum of bis(diethanolaminophenylimine pentaerythritol phosphite) of Example 1.
- FIG. 3 is an FT-IR spectrogram of the hyperbranched nitrile rubber-polyurethane of Example 1.
- Figure 4 is the TG curve of the functionalized modified recycled rubber material.
- Recycled nitrile rubber brand 012; model 001; Hengshui Dehai Rubber Products Co., Ltd.
- Hydroxyl-terminated nitrile rubber Model TL50; Jining Tangyi Chemical Co., Ltd.
- Nitrile latex solid content 44%; viscosity: 4500+2000PCS; Jinan Xinling Chemical Technology Co., Ltd.
- Polyethylene glycol molecular weight 2000, number: A040538; item number A0405385000; Anhui Zesheng Technology Co., Ltd. Anaiji Chemical.
- Glacial acetic acid AR, ⁇ 99.5%; Product No. B0200525000; Anhui Zesheng Technology Co., Ltd. Anaiji Chemical.
- Diaminoethoxy dipentaerythritol phosphite was prepared with reference to the journal "Chemical Intermediates", Issue 03, 2012, Article Number: T1672-8114 (2012) 03-044-05; the document "Synthesis of Diaminoethoxy Dipentaerythritol Phosphite”: 6.8 g of triethyl phosphite, 2.7 g of pentaerythritol and 0.13 g of dibutyltin dilaurate were reacted at 130°C for 3 h, and then the ethanol by-product was removed by vacuum distillation, and then 3.2 g of ethanolamine was added, and the reaction was carried out at 140°C for 3 h. After the reaction, vacuum distillation was carried out to obtain diaminoethoxy dipentaerythritol phosphite.
- the mixed rubber was vulcanized in a flat vulcanizer at 160° C. under a pressure of 12 MPa for 40 min to obtain a functionally modified recycled rubber material CABN-a.
- the mixed rubber was vulcanized in a flat vulcanizer at 170° C. under a pressure of 10 MPa for 30 min to obtain a functionally modified recycled rubber material CABN-c.
- Tensile performance test The functionally modified recycled rubber material was made into a strip specimen of 10 cm ⁇ 3 cm ⁇ 0.5 cm, and the tensile performance was tested by a universal electronic material testing machine at a tensile rate of 10 mm/min.
- TG performance test The functionalized modified recycled rubber material was made into a square sample of 2cm ⁇ 2cm ⁇ 0.3cm and subjected to TG thermogravimetric analysis by a thermogravimetric analyzer in a nitrogen atmosphere at a heating rate of 10°C/min from 20 room temperature to 800°C.
- Shore A hardness test The Shore A hardness of the functionalized modified recycled rubber material is measured by a rubber hardness tester. The sample is 5cm ⁇ 2cm ⁇ 0.6cm. The sample is subjected to a force load of 1Kg. The reading begins when the bottom surface of the hardness tester is smoothly combined with the surface of the sample.
- Tear strength test The tear strength of the functional modified recycled rubber material was measured by a tensile testing machine using the trouser-shaped tear method. The tensile speed of the trouser-shaped specimen was 100 mm/min, and the cutting depth of the specimen was 50 mm.
- CABN-a, b, and c are the functionalized modified recycled rubber materials prepared in Examples 1-3, respectively;
- CABN-d is the recycled rubber material prepared in the comparative example.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
本发明涉及橡胶材料技术领域,且公开了一种再生橡胶材料的功能化改性及其在安全手套中的应用,将含有双螺环磷酸酯结构的超支化丁腈橡胶-聚氨酯作为填充改性剂,与丁腈橡胶、再生丁腈橡胶共混改性,超支化聚氨酯具有三维支化网络结构,同时主链中含有丁腈橡胶分子链,与丁腈橡胶和再生丁腈橡胶三者之间有很好的界面相容性,形成三维交联网络,提高了再生橡胶复合材料的拉伸强度、撕裂强度等力学性能;含有高阻燃性和高热稳定性的双螺环磷酸酯结构,提高了再生橡胶复合材料热分解温度、成碳量和耐热性能,拓展了再生丁腈橡胶复合材料在安全手套等特种防护用品中的实际应用。
Description
本发明涉及橡胶材料技术领域,具体为一种再生橡胶材料的功能化改性及其在安全手套中的应用。
防护用品如安全防护手套、防护服等广泛应用在医疗卫生、特种工程作业、石油化工作业等领域;丁腈橡胶(CABN)具有耐油性好,耐磨性高等优点,在安全防护手套、防护服、防护胶鞋等领域有着广阔的应用前景,提高丁腈橡胶的力学、热力学等综合性能,有利于拓展丁腈橡胶在手套等防护用品中的实际应用;如专利CN112812261B制备了丁腈橡胶-聚氨酯复合手套,在丁腈橡胶基膜外面附着一层具有抗菌作用和共轭吸收紫外光作用的阳离子型弱酸性水性聚氨酯薄膜,得到的手套耐油耐候性、抗病菌渗透性、透气透湿等性能优良。
采用高分子化合物对丁腈橡胶进行填充改性,可以增强其力学强度、防老化等性能,如《树枝状聚酰胺-胺对丁腈橡胶的防护作用研究》,合成了超支化树枝状聚酰胺-胺,作为防老剂加入丁腈橡胶中,提高了丁腈橡胶的力学性能和防老化等性能;本发明旨在合成超支化丁腈橡胶聚氨酯,与丁腈胶乳、再生丁腈橡胶共混改性,提高橡胶材料的力学性能和耐热等性能,拓展丁腈橡胶在安全手套等特种防护用品中的发展和应用。
发明内容
(一)解决的技术问题
针对现有技术的不足,本发明提供了一种再生橡胶材料的功能化改性,应用安全手套中,解决了再生丁腈复合橡胶手套材料的力学性能较低,耐热性不高的问题。
(二)技术方案
为实现上述目的,本发明提供以下技术方案:一种再生橡胶材料的功能化改性的方法,包括如下步骤:
S1、将100重量份数的丁腈胶乳、15-35重量份数的再生丁腈橡胶、超支化丁腈橡胶-聚氨酯、20-40重量份数的苯二甲酸二辛酯加入到开炼机中进行薄通,然后加入0.5-1.2重量份数的硬脂酸、0.6-1.5重量份数的防老剂,混炼均匀后加入0.5-1重量份数的过氧化二异丙苯、1-2重量份数的三烯丙基异氰脲酸酯,进行薄通、打三角包然后出片得到混炼橡胶。
S2、将混炼橡胶在平板硫化机中进行硫化,得到功能化改性的再生橡胶材料。
优选的,所述S1中超支化丁腈橡胶-聚氨酯的用量为丁腈胶乳重量的2-8%。
优选的,所述S2中硫化条件为在8-12MPa压力下,硫化处理20-40min,硫化温度为160-180℃。
优选的,所述超支化丁腈橡胶-聚氨酯的制备方法包括如下步骤:
S3、向乙醇溶剂中加入二氨乙氧基双亚磷酸季戊四醇酯和4-氯甲基苯甲醛,搅拌溶解后滴加冰醋酸,升温至65-80℃搅拌回流反应6-18h,反应后减压浓缩除去乙醇溶剂,加
入蒸馏水和乙酸乙酯,静置分层并萃取分离,将有机层加入无水硫酸钠干燥,然后过滤并收集滤液,减压浓缩除去乙酸乙酯溶剂,乙醚洗涤后产物后加入到乙酸乙酯中重结晶,得到双(氯甲基苯亚胺亚磷酸季戊四醇酯)。
S4、向溶剂中加入双(氯甲基苯亚胺亚磷酸季戊四醇酯)和二乙醇胺,升温至50-70℃,反应12-24h,反应后减压浓缩除去乙醇溶剂,乙醚洗涤后产物加入到乙醇中重结晶,得到双(二乙醇胺基苯亚胺亚磷酸季戊四醇酯)。
S5、将100重量份数的聚乙二醇真空脱水,然后与60-85重量份数的甲苯2,4-二异氰酸酯、30-55重量份数的端羟基丁腈橡胶溶解到N,N-二甲基甲酰胺中,在N2气氛中滴加0.30.6重量份数的二月桂酸二丁基锡,升温至75-85℃,反应2-3h,然后温度降至50-60℃并加入12-20重量份数的双(二乙醇胺基苯亚胺亚磷酸季戊四醇酯),搅拌反应1-3h,反应后过滤溶剂,依次用蒸馏水、乙醇洗涤产物,得到超支化丁腈橡胶-聚氨酯。
优选的,所述S3中二氨乙氧基双亚磷酸季戊四醇酯和4-氯甲基苯甲醛的物质的量摩尔比例为1∶2.2-2.8。
优选的,所述S3中冰醋酸的用量为反应物总重量的2-4%。
优选的,所述S4中溶剂为乙酸乙酯、四氢呋喃、甲苯、二甲苯中的任一种。
优选的,所述S4中双(氯甲基苯亚胺亚磷酸季戊四醇酯)和二乙醇胺的物质的量摩尔比例为1∶2-2.4。
(三)有益的技术效果
与现有技术相比,本发明具备以下有益技术效果:
将二氨乙氧基双亚磷酸季戊四醇酯依次与4-氯甲基苯甲醛、二乙醇胺进行反应,合成了四羟基官能度的双(二乙醇胺基苯亚胺亚磷酸季戊四醇酯),作为支化扩链剂,与端羟基丁腈橡胶、聚乙二醇和2,4-甲苯二异氰酸酯进行超支化聚合反应,合成了含有双螺环磷酸酯结构的超支化丁腈橡胶-聚氨酯。
将超支化丁腈橡胶-聚氨酯作为填充改性剂,与丁腈橡胶、再生丁腈橡胶共混改性,超支化聚氨酯具有三维支化网络结构,同时主链中含有丁腈橡胶分子链,使得超支化丁腈橡胶-聚氨酯与丁腈橡胶和再生丁腈橡胶三者之间有很好的界面相容性,与丁腈橡胶和再生丁腈橡胶形成三维交联网络,提高了再生橡胶复合材料的拉伸强度、撕裂强度等力学性能。
超支化丁腈橡胶-聚氨酯含有高阻燃性和高热稳定性的双螺环磷酸酯结构,提高了再生橡胶复合材料热分解温度和成碳量,表现出更高的耐热性能,拓展了再生丁腈橡胶复合材料在安全手套等特种防护用品中的实际应用。
图1是实施例1双(氯甲基苯亚胺亚磷酸季戊四醇酯)的核磁氢谱。
图2是实施例1双(二乙醇胺基苯亚胺亚磷酸季戊四醇酯)的核磁氢谱。
图3是实施例1超支化丁腈橡胶-聚氨酯的FT-IR谱图。
图4是功能化改性的再生橡胶材料的TG曲线。
再生丁腈橡胶:牌号012;型号001;衡水德海橡胶制品有限公司。
端羟基丁腈橡胶:型号TL50;济宁棠邑化工有限公司。
丁腈胶乳:固含量44%;粘度:4500+2000PCS;济南新领化工科技有限公司。
聚乙二醇:分子量2000,编号:A040538;货号A0405385000;安徽泽升科技有限公司安耐吉化学。
冰醋酸:AR,≥99.5%;货号B0200525000;安徽泽升科技有限公司安耐吉化学。
二氨乙氧基双亚磷酸季戊四醇酯参照期刊《化工中间体》,2012年第03期,文章编号:T1672-8114(2012)03-044-05;文献《二氨乙氧基双亚磷酸季戊四醇酯的合成》进行制备:将6.8g的亚磷酸三乙酯和2.7g的季戊四醇和0.13g的二月桂酸二丁基锡在130℃中反应3h,然后减压蒸馏除去乙醇副产物,再加入3.2g的乙醇胺,在140℃中反应3h,反应后减压蒸馏,得到二氨乙氧基双亚磷酸季戊四醇酯,
实施例1
(1)向50mL的乙醇溶剂中加入2.5g的二氨乙氧基双亚磷酸季戊四醇酯和3g的4-氯甲基苯甲醛,搅拌溶解后滴加0.18g的冰醋酸,升温至80℃搅拌回流反应18h,反应后减压浓缩除去乙醇溶剂,加入蒸馏水和乙酸乙酯,静置分层并萃取分离,将有机层加入无水硫酸钠干燥,然后过滤并收集滤液,减压浓缩除去乙酸乙酯溶剂,乙醚洗涤后产物后加入到乙酸乙酯中重结晶,得到双(氯甲基苯亚胺亚磷酸季戊四醇酯);
(2)向100mL的四氢呋喃中加入3g的双(氯甲基苯亚胺亚磷酸季戊四醇酯)和1.2g的二乙醇胺,升温至50℃,反应18h,反应后减压浓缩除去乙醇溶剂,乙醚洗涤后产物加入到乙醇中重结晶,得到双(二乙醇胺基苯亚胺亚磷酸季戊四醇酯);
(3)将5g的聚乙二醇真空脱水,然后与3g的甲苯2,4二异氰酸酯、1.5g的端羟基丁腈橡胶溶解到30mL的N,N-二甲基甲酰胺中,在N2气氛中滴加15mg的二月桂酸二丁基锡,升温至85℃,反应2h,然后温度降至50℃并加入0.6g的双(二乙醇胺基苯亚胺亚磷酸季戊四醇酯),搅拌反应3h,反应后过滤溶剂,依次用蒸馏水、乙醇洗涤产物,得到超支化丁腈橡胶-聚氨酯。
(4)将20g的丁腈胶乳、4.5g的再生丁腈橡胶、0.4g的超支化丁腈橡胶聚氨酯、4g的苯二甲酸二辛酯加入到开炼机中进行薄通,然后加入0.1g的硬脂酸、0.2g的防老剂ODA,混炼均匀后加入0.15g的过氧化二异丙苯、0.25g的三烯丙基异氰脲酸酯,进行薄通、打三角包然后出片得到混炼橡胶。
(5)将混炼橡胶在平板硫化机中在12MPa压力下,160℃中硫化处理40min,得到功能化改性的再生橡胶材料CABN-a。
实施例2
(1)向50mL的乙醇溶剂中加入2.5g的二氨乙氧基双亚磷酸季戊四醇酯和3.4g的4-氯甲基苯甲醛,搅拌溶解后滴加0.11g的冰醋酸,升温至65℃搅拌回流反应18h,反应后减压浓缩除去乙醇溶剂,加入蒸馏水和乙酸乙酯,静置分层并萃取分离,将有机层加入无水硫酸钠干燥,然后过滤并收集滤液,减压浓缩除去乙酸乙酯溶剂,乙醚洗涤后产物后加入到乙酸乙酯中重结晶,得到双(氯甲基苯亚胺亚磷酸季戊四醇酯)。
(2)向50mL的乙酸乙酯中加入3g的双(氯甲基苯亚胺亚磷酸季戊四醇酯)和1.3g的二乙醇胺,升温至70℃,反应12h,反应后减压浓缩除去乙醇溶剂,乙醚洗涤后产物加入到乙醇中重结晶,得到双(二乙醇胺基苯亚胺亚磷酸季戊四醇酯)。
(3)将5g的聚乙二醇真空脱水,然后与3.8g的甲苯2,4-二异氰酸酯、2.2g的端羟基丁腈橡胶溶解到80mL的N,N-二甲基甲酰胺中,在N2气氛中滴加25mg的二月桂酸二丁基锡,升温至75℃,反应3h,然后温度降至60℃并加入0.8g的双(二乙醇胺基苯亚胺亚磷酸季戊四醇酯),搅拌反应3h,反应后过滤溶剂,依次用蒸馏水、乙醇洗涤产物,得到超支化丁腈橡胶聚氨酯。
(4)将20g的丁腈胶乳、7g的再生丁腈橡胶、1.2g的超支化丁腈橡胶-聚氨酯、7g的苯二甲酸二辛酯加入到开炼机中进行薄通,然后加入0.24g的硬脂酸、0.3g的防老剂4010NA,混炼均匀后加入0.2g的过氧化二异丙苯、0.2g的三烯丙基异氰脲酸酯,进行薄通、打三角包然后出片得到混炼橡胶。
(5)将混炼橡胶在平板硫化机中在8MPa压力下,180℃中硫化处理20min,得到功能化改性的再生橡胶材料CABN-b。
实施例3
(1)向30mL的乙醇溶剂中加入2.5g的二氨乙氧基双亚磷酸季戊四醇酯和2.7g的4-氯甲基苯甲醛,搅拌溶解后滴加0.11g的冰醋酸,升温至80℃搅拌回流反应18h,反应后减压浓缩除去乙醇溶剂,加入蒸馏水和乙酸乙酯,静置分层并萃取分离,将有机层加入无水硫酸钠干燥,然后过滤并收集滤液,减压浓缩除去乙酸乙酯溶剂,乙醚洗涤后产物后加入到乙酸乙酯中重结晶,得到双(氯甲基苯亚胺亚磷酸季戊四醇酯)。
(2)向50mL的甲苯中加入3g的双(氯甲基苯亚胺亚磷酸季戊四醇酯)和1.1g的二乙醇胺,升温至50℃,反应18h,反应后减压浓缩除去乙醇溶剂,乙醚洗涤后产物加入到乙醇中重结晶,得到双(二乙醇胺基苯亚胺亚磷酸季戊四醇酯)。
(3)将5g的聚乙二醇真空脱水,然后与4.2g的甲苯2,4-二异氰酸酯、2.7g的端羟基丁腈橡胶溶解到80mL的N,N二甲基甲酰胺中,在N2气氛中滴加30mg的二月桂酸二丁基锡,升温至75℃,反应3h,然后温度降至55℃并加入1g的双(二乙醇胺基苯亚胺亚磷酸季戊四醇酯),搅拌反应1h,反应后过滤溶剂,依次用蒸馏水、乙醇洗涤产物,得到超支化丁腈橡胶-聚氨酯。
(4)将20g的丁腈胶乳、6g的再生丁腈橡胶、1.6g的超支化丁腈橡胶-聚氨酯、7.5g的苯二甲酸二辛酯加入到开炼机中进行薄通,然后加入0.1g的硬脂酸、0.25g的防老剂4010NA,混炼均匀后加入0.14g的过氧化二异丙苯、0.32g的三烯丙基异氰脲酸酯,进行薄通、打三角包然后出片得到混炼橡胶。
(5)将混炼橡胶在平板硫化机中在10MPa压力下,170℃中硫化处理30min,得到功能化改性的再生橡胶材料CABN-c。
对比例1
(4)将20g的丁腈胶乳、4.6g的再生丁腈橡胶、5.2g的苯二甲酸二辛酯加入到开炼机中进行薄通,然后加入0.2g的硬脂酸、0.18g的防老剂ODA,混炼均匀后加入0.15g的过氧化二异丙苯、0.27g的三烯丙基异氰脲酸酯,进行薄通、打三角包然后出片得到混炼橡胶。
(2)将混炼橡胶在平板硫化机中在8MPa压力下,180℃中硫化处理20min,得到再生橡胶材料CABN-d。
拉伸性能测试:将功能化改性的再生橡胶材料制成10cm×3cm×0.5cm的条形试样,通过万能电子材料试验机测试拉伸性能,拉伸速率10mm/min。
TG性能测试:将功能化改性的再生橡胶材料制成2cm×2cm×0.3cm的方形试样,通过热重分析仪进行TG热重分析,氮气气氛,以10℃/min的加热速率,20室温升温至800℃。
邵尔A型硬度测试:通过橡胶硬度计测定功能化改性的再生橡胶材料的邵尔A型硬度,试样为5cm×2cm×0.6cm,将试样受到1Kg力负荷,当硬度计的底面与试样表面平稳地结合时开始读数。
撕裂强度测试:通过拉力试验机,采用裤形撕裂法,测定功能化改性的再生橡胶材料的撕裂强度,裤形试样的拉伸速度100mm/min,试样割口深度:50mm。
CABN-a、b、c依次为实施例1-3制备的功能化改性的再生橡胶材料;CABN-d为对比例制备的再生橡胶材料。
Claims (8)
- 一种再生橡胶材料的功能化改性的方法,其特征在于:所述再生橡胶材料的功能化改性的方法包括如下步骤:S1、将100重量份数的丁腈胶乳、15-35重量份数的再生丁腈橡胶、超支化丁腈橡胶-聚氨酯、20-40重量份数的苯二甲酸二辛酯加入到开炼机中进行薄通,然后加入0.5-1.2重量份数的硬脂酸、0.6-1.5重量份数的防老剂,混炼均匀后加入0.5-1重量份数的过氧化二异丙苯、1-2重量份数的三烯丙基异氰脲酸酯,进行薄通、打三角包然后出片得到混炼橡胶;S2、将混炼橡胶在平板硫化机中进行硫化,得到功能化改性的再生橡胶材料。
- 根据权利要求1所述的一种再生橡胶材料的功能化改性的方法,其特征在于:所述S1中超支化丁腈橡胶-聚氨酯的用量为丁腈胶乳重量的2-8%。
- 根据权利要求1所述的一种再生橡胶材料的功能化改性的方法,其特征在于:所述S2中硫化条件为在8-12MPa压力下,硫化处理20-40min,硫化温度为160-180℃。
- 根据权利要求1所述的一种再生橡胶材料的功能化改性的方法,其特征在于:所述超支化丁腈橡胶-聚氨酯的制备方法包括如下步骤:S3、向乙醇溶剂中加入二氨乙氧基双亚磷酸季戊四醇酯和4-氯甲基苯甲醛,搅拌溶解后滴加冰醋酸,升温至65-80℃搅拌回流反应6-18h,反应后减压浓缩、萃取分离、洗涤、重结晶,得到双(氯甲基苯亚胺亚磷酸季戊四醇酯);S4、向溶剂中加入双(氯甲基苯亚胺亚磷酸季戊四醇酯)和二乙醇胺,升温至50-70℃,反应12-24h,反应后减压浓缩、洗涤、重结晶,得到双(二乙醇胺基苯亚胺亚磷酸季戊四醇酯);S5、将100重量份数的聚乙二醇真空脱水,然后与60-85重量份数的甲苯2,4-二异氰酸酯、30-55重量份数的端羟基丁腈橡胶溶解到N,N-二甲基甲酰胺中,在N2气氛中滴加0.3-0.6重量份数的二月桂酸二丁基锡,升温至75-85℃,反应2-3h,然后温度降至50-60℃并加入12-20重量份数的双(二乙醇胺基苯亚胺亚磷酸季戊四醇酯),搅拌反应1-3h,反应后过滤、洗涤产物,得到超支化丁腈橡胶-聚氨酯。
- 根据权利要求1所述的一种再生橡胶材料的功能化改性的方法,其特征在于:所述S3中二氨乙氧基双亚磷酸季戊四醇酯和4-氯甲基苯甲醛的物质的量摩尔比例为1∶2.2-2.8。
- 根据权利要求1所述的一种再生橡胶材料的功能化改性的方法,其特征在于:所述S3中冰醋酸的用量为反应物总重量的2-4%。
- 根据权利要求1所述的一种再生橡胶材料的功能化改性的方法,其特征在于:所述S4中溶剂为乙酸乙酯、四氢呋喃、甲苯、二甲苯中的任一种。
- 根据权利要求1所述的一种再生橡胶材料的功能化改性的方法,其特征在于:所述S4中双(氯甲基苯亚胺亚磷酸季戊四醇酯)和二乙醇胺的物质的量摩尔比例为1∶2-2.4。
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