CN103756058A - High-hardness oil seal sizing material - Google Patents
High-hardness oil seal sizing material Download PDFInfo
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- CN103756058A CN103756058A CN201310755366.5A CN201310755366A CN103756058A CN 103756058 A CN103756058 A CN 103756058A CN 201310755366 A CN201310755366 A CN 201310755366A CN 103756058 A CN103756058 A CN 103756058A
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Abstract
The invention relates to a high-hardness oil seal sizing material with high hardness, low pressure change and high elasticity. The high-hardness oil seal sizing material comprises the following components in parts by weight: 90-110 parts of butadiene-acrylonitrile rubber, 9-11 parts of reactive resin, 3.6-4.4 parts of a vulcanizing system, 4.5-5.5 parts of nano-scale zinc oxide, 0.9-1.1 parts of stearic acid, 27-33 parts of N220 carbon black, 36-44 parts of N330 carbon black, 18-22 parts of JT-2, 4.5-5.5 parts of a processing aid and 2.7-3.3 parts of an anti-aging agent. The high-hardness oil seal sizing material has the advantages that the technical defects that the existing high-hardness oil seal sizing material is large in deformation, poor in elasticity, low in temperature intolerance, and poor in processing property during oil seal production are overcome, the quality grade of an oil seal is improved, an imported oil seal sizing material is replaced, and good economic and social benefits can be achieved.
Description
Technical field
The present invention relates to a kind of have high rigidity, low pressure change, elastomeric high rigidity oil sealing sizing material, belong to oil sealing sizing material and manufacture field.
Background technology
CN102993478A, title " high durometer rubber seal piece size ", its rubber raw materials component and raw material weight proportioning are the Chinese name of 120～150 parts of 1# natural rubbers, 2～3 parts, sulphur, 4～6 parts, zinc oxide, 2～4 parts of stearic acid, 1～1.2 part, paraffin, 10～12 parts of Stockholm tars, 80～100 parts of spray carbon blacks, 20～40 parts of thermally oxidized blacks, altax: 2,2 '-dithio Dibenzo thiazole, the Chinese name of 1～1.2 part of molecular formula: C14H8N2S4, antioxidant D: N-phenyl-2-naphthylamine, molecular formula: C16H13N1～1.2 part.
Summary of the invention
Purpose of design: by the optimization to background technology, design a kind of have high rigidity, low pressure change, elastomeric high rigidity oil sealing sizing material.
Design: when carrying out formulating, select high molecular (high Mooney viscosity) rubber, first itself and reaction resin are carried out to physical blending, by the in-situ cross-linked and polyreaction of reaction resin in Vulcanization Process of Rubber, form rubber and resin alloy, crosslinked polymer composites, make it reach the object of Reinforced Rubber.Meanwhile, guarantee that its cross-linked rubber has high rigidity, good elasticity and compression set performance.In addition, adopt some polymkeric substance performed polymers as the reactive transient plasticizer of rubber, make softening agent that in-situ polymerization and crosslinking reaction also occur in the vulcanization of rubber, thereby guarantee that rubber unvulcanizate has compared with low viscosity, and cross-linked rubber has very high consistency and elasticity.When carrying out mixing and vulcanization process condition research, according to the feature of Project Product, order of addition(of ingredients), melting temperature and mixing equipment used are considered, guaranteeing, under the prerequisite of quality product, to be more adapted to industrialized production condition.On the basis of above-mentioned work, in work, will the formula of high rigidity oil sealing sizing material, calendering process, suitability for industrialized production equipment, quality control method and production management pattern have been carried out to comprehensive examination, its product is multiple batches of delivers user to its physical and mechanical properties and oil sealing production technique Performance Assessment.
1, rubber: rubber is the body material of rubber compounding, its performance to sizing material plays conclusive effect, consider the performance requriements feature of this Project Product---high rigidity, snappiness and good resistance to low temperature, should select the rubber of middle high acrylonitrile content, high Mooney viscosity, but consider and in high Mooney viscosity rubber, add a large amount of super-normal structure black (in order to guarantee high rigidity), may make the mobility variation of rubber unvulcanizate, affect sulfidization molding technique and the lip Cutting Process of sizing material.So, first rubber and reaction resin are carried out to physical blending, by the in-situ cross-linked and polyreaction of reaction resin in Vulcanization Process of Rubber, form rubber and resin alloy, crosslinked polymer composites, make it reach the object of enhancing, Hardening rubber.Table-1 experimental data explanation, adds 10 parts of reaction resin sizing materials to show good performance.
Table-1
Its basic recipe: rubber 100, zinc oxide 5, stearic acid 1, anti-aging agent 3, processing aid 2, carbon black 60, vulcanization system 4.
2, vulcanization system: vulcanization system directly affects the performances such as the heat aging property, compression set of cross-linked rubber.Shown in table-2, be the comparative test result of Elastomers with Different Curing Systems, illustrate and adopt peroxide vulcanizing system, cross-linked rubber has good thermal aging property and compression set performance.
Table-2 several vulcanization system Performance Ratios
Its basic recipe: rubber 100, zinc oxide 5, stearic acid 1, anti-aging agent 3, processing aid 2, carbon black 60, reaction resin 10.
3, selecting of carbon black: consider from the hardness of product, because hardness requirement is up to 85 ± 5, we have selected the system of the hard (carbon) blacks such as N220, N330 use, and test-results is as table-3.According to experimental data, adopt the N-220 of 30 parts and N-330 the use of 50 parts, its basic mechanical performance can be said to be and meets the demands, but use in a large number carbon black may make sizing material processing performance variation, so must consider is not affecting under the prerequisite of hardness and other mechanical properties, use reactive plasticizer to solve problem.
Table-3 impacts of several carbon black variablees on properties of rubber
4, softening agent: most of softening agent is all some low molecular liquid, the mobility that adds calendering process and the sizing material that can improve sizing material of softening agent, but it also can reduce cross-linked rubber hardness and intensity.So, it is obviously worthless for this product, adding common softening agent, must consider to add some to there is the softening agent of reactive behavior, it is a kind of performed polymer that this reactivity is moulded agent, under calendering process condition, it has the function of low molecule plasticizer oil, but in sulfidation, will there is chain extending reaction and aggregate into polymer in it, improve hardness and the intensity of cross-linked rubber.Table the-4th, the mechanical property of vulcanized rubber result of adding different amounts reactive plasticizer (JT-2).By table-4 we can find out, the JT-2 that has added 20 parts is not only less on the impact of hardness, and can to sizing material, carry out reinforcement well.
The impact of table-4JT-2 on properties of rubber.(wherein 30 parts of N330 of N220 40 parts)
5, formula is determined: comprehensive above-mentioned experimental result and discussion, drafted the formula as shown in table-5, and by " the parallel retrial of three cars " formula test, and its rubber unvulcanizate processing performance and vulcanized mechanical are tested.Sizing material processing performance is as figure-2 and table-6, and vulcanized mechanical test result is as shown in table-7, and its stable performance and physical and mechanical properties meet performance index requirement completely as seen.
Table-5 high rigidity oil sealing material formulas
| Title | Umber | Title | Umber |
| Paracril | 90-110 | N220 carbon black | 27-33 |
| Reaction resin | 9-11 | N330 carbon black | 36-44 |
| Vulcanization system | 3.6-4.4 | JT-2 | 18-22 |
| Zinc oxide (nanometer) | 4.5-5.5 | Processing aid | 4.5-5.5 |
| Stearic acid | 0.9-1.1 | Anti-aging agent | 2.7-3.3 |
Table-6 high rigidity oil sealing sizing material processing performance test results
Table-7 high rigidity oil sealing material correlated performance index and experimental results
The present invention compares with background technology, solved that the distortion of current high rigidity oil sealing sizing material is large, poor flexibility and not low temperature resistant and while producing oil sealing processing performance poor technological deficiency, improved the quality scale of oil sealing, substitute imported oil sealing material, will obtain good economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is high rigidity oil sealing rubber vulcanization curve synoptic diagram.
Fig. 2 is high rigidity oil sealing sizing material technological process of production schematic diagram.
Embodiment
Embodiment 1: with reference to attached Fig. 1 and 2.A high rigidity oil sealing sizing material, raw material weight proportioning: paracril 90-110 part, reaction resin 9-11 part, vulcanization system 3.6-4.4 part, Nano-class zinc oxide 4.5-5.5 part, stearic acid 0.9-1.1 part, N220 carbon black 27-33 part, N330 carbon black 36-44 part, JT-2 18-22 part, processing aid 4.5-5.5 part, anti-aging agent 2.7-3.3 part.
Embodiment 2: on the basis of embodiment 1, and 100 parts of paracrils, 10 parts of reaction resins, 4 parts of vulcanization systems, 5 parts of Nano-class zinc oxides, 1 part of stearic acid, 30 parts of N220 carbon blacks, 40 parts of N330 carbon blacks, 20 parts of JT-2,5 parts of processing aids, 3 parts, anti-aging agent.
Embodiment 3: on the basis of embodiment 1, and 90 parts of paracrils, 9 parts of reaction resins, 3.6 parts of vulcanization systems, 4.5 parts of Nano-class zinc oxides, 0.9 part of stearic acid, 27 parts of N220 carbon blacks, 36 parts of N330 carbon blacks, 18 parts of JT-2,4.5 parts of processing aids, 2.7 parts, anti-aging agent.
Embodiment 4: on the basis of embodiment 1, and 110 parts of paracrils, 11 parts of reaction resins, 4.4 parts of vulcanization systems, 5.5 parts of Nano-class zinc oxides, 1.1 parts of stearic acid, 33 parts of N220 carbon blacks, 44 parts of N330 carbon blacks, 22 parts of JT-2,5.5 parts of processing aids, 3.3 parts, anti-aging agent.
It is to be understood that: although above-described embodiment is to the mentality of designing of the present invention detailed text description of contrasting; but these text descriptions; just the simple text of mentality of designing of the present invention is described; rather than the restriction to mentality of designing of the present invention; any combination, increase or modification that does not exceed mentality of designing of the present invention, all falls within the scope of protection of the present invention.
Claims (3)
1. a high rigidity oil sealing sizing material, is characterized in that raw material weight proportioning: paracril 90-110 part, reaction resin 9-11 part, vulcanization system 3.6-4.4 part, Nano-class zinc oxide 4.5-5.5 part, stearic acid 0.9-1.1 part, N220 carbon black 27-33 part, N330 carbon black 36-44 part, JT-2 18-22 part, processing aid 4.5-5.5 part, anti-aging agent 2.7-3.3 part.
2. high rigidity oil sealing sizing material according to claim 1, is characterized in that raw material weight proportioning: 100 parts of paracrils, 10 parts of reaction resins, 4 parts of vulcanization systems, 5 parts of Nano-class zinc oxides, 1 part of stearic acid, 30 parts of N220 carbon blacks, 40 parts of N330 carbon blacks, 20 parts of JT-2,5 parts of processing aids, 3 parts, anti-aging agent.
3. high rigidity oil sealing sizing material according to claim 1, is characterized in that high rigidity oil sealing sizing material parameter is as follows:
Hardness, Shao Shi A:86-87; Tensile yield %:235-241; Tensile strength MPa:17.4-18.1; 25%, 70 ℃ * 22h:17.8-18.0 of compression set; Temperature limit of brittleness ,-30 ℃: flawless.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110041291A (en) * | 2009-10-15 | 2011-04-21 | 한국델파이주식회사 | Rubber composition of oil seal for power steering system |
| CN103396591A (en) * | 2013-06-14 | 2013-11-20 | 中国船舶重工集团公司第七二五研究所 | Oilfield ultrahigh-pressure acid-resistant rubber seal material and preparation method thereof |
| CN103435866A (en) * | 2013-08-31 | 2013-12-11 | 青岛承天伟业机械制造有限公司 | Rubber seal ring for auto parts |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110041291A (en) * | 2009-10-15 | 2011-04-21 | 한국델파이주식회사 | Rubber composition of oil seal for power steering system |
| CN103396591A (en) * | 2013-06-14 | 2013-11-20 | 中国船舶重工集团公司第七二五研究所 | Oilfield ultrahigh-pressure acid-resistant rubber seal material and preparation method thereof |
| CN103435866A (en) * | 2013-08-31 | 2013-12-11 | 青岛承天伟业机械制造有限公司 | Rubber seal ring for auto parts |
Non-Patent Citations (1)
| Title |
|---|
| 杨清芝: "《现代橡胶工艺学》", 30 June 1997, article "《现代橡胶工艺学》" * |
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Address after: 311121 No. 1 Dragon Boat Road, front street, Yuhang District, Zhejiang, Hangzhou Applicant after: Hangzhou Shower Rubber Engineering Co., Ltd. Address before: 311121 No. 1 Dragon Boat Road, front street, Hangzhou, Zhejiang Applicant before: Hangzhou Shower Rubber Engineering Co., Ltd. |
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Application publication date: 20140430 |