CN116790067A - Anti-aging TPV central control handrail pad - Google Patents
Anti-aging TPV central control handrail pad Download PDFInfo
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- CN116790067A CN116790067A CN202310743478.2A CN202310743478A CN116790067A CN 116790067 A CN116790067 A CN 116790067A CN 202310743478 A CN202310743478 A CN 202310743478A CN 116790067 A CN116790067 A CN 116790067A
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- 230000003712 anti-aging effect Effects 0.000 title claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 22
- -1 polypropylene Polymers 0.000 claims abstract description 21
- 230000032683 aging Effects 0.000 claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 18
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 17
- 239000000314 lubricant Substances 0.000 claims abstract description 14
- 239000004743 Polypropylene Substances 0.000 claims abstract description 13
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 13
- 239000004611 light stabiliser Substances 0.000 claims abstract description 13
- 229920001155 polypropylene Polymers 0.000 claims abstract description 13
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 11
- 239000004014 plasticizer Substances 0.000 claims abstract description 9
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 7
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 6
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 14
- 239000011265 semifinished product Substances 0.000 claims description 12
- 150000001412 amines Chemical class 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 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 claims description 3
- 239000004342 Benzoyl peroxide Substances 0.000 claims description 3
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 3
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- 125000003118 aryl group Chemical group 0.000 claims description 3
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 3
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 claims description 3
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 239000000194 fatty acid Substances 0.000 claims description 3
- 229930195729 fatty acid Natural products 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 229920002545 silicone oil Polymers 0.000 claims description 3
- 229940037312 stearamide Drugs 0.000 claims description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 3
- 229920002554 vinyl polymer Polymers 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 239000012188 paraffin wax Substances 0.000 claims description 2
- 229920001580 isotactic polymer Polymers 0.000 abstract description 3
- 239000002904 solvent Substances 0.000 abstract description 3
- 238000004132 cross linking Methods 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 5
- 239000005060 rubber Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000004073 vulcanization Methods 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 150000001451 organic peroxides Chemical class 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
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- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to an aging-resistant TPV central control armrest pad, which comprises the following raw materials in parts by weight: 50-60 parts of TPV, 20-30 parts of high-density polyethylene, 1-5 parts of cross-linking agent, 1.5-2 parts of lubricant, 5-10 parts of plasticizer and 0.5-1 part of antioxidant; the TPV agent consists of the following components in parts by weight: 50-60 parts of EPDM, 20-40 parts of polypropylene, 0.1-5 parts of an anti-aging agent, 1-3 parts of a light stabilizer, 1-2 parts of a vulcanizing agent and 0.5-1 part of a vulcanizing aid, and the polypropylene has good solvent resistance, heat resistance and processing fluidity by being limited to an isotactic polymer, so that the fluidity of the TPV material can be greatly improved.
Description
Technical Field
The invention belongs to the technical field of high polymer materials, and relates to an anti-aging TPV central control handrail pad.
Background
Thermoplastic elastomers are polymeric materials that have the properties of cured rubber at ordinary temperatures and are capable of plasticizing and deforming at high temperatures. The method can be processed and formed by plastic processing equipment, such as injection molding, extrusion molding, blow molding, calendaring, T-Die casting and the like, and has the advantages of light weight (low density), environmental protection (recoverable and non-toxic in combustion), long service life (more than 5-10 times than the traditional rubber), large processing variation, low total cost of products and the like compared with the traditional vulcanized rubber. At present, along with the increase of the application amount of the thermoplastic elastomer, the application field is also expanding continuously, such as automobiles, household appliances, industrial products and civil products.
The traditional central control handrail pad is usually formed by rubber injection molding, and in summer, the central control handrail pad is usually exposed to sunlight, so that cracking and aging phenomena are easy to occur after a period of time, and the service life of the whole central control handrail pad is seriously influenced.
Disclosure of Invention
The invention aims at solving the problems in the prior art and provides an aging-resistant TPV central control handrail pad.
The aim of the invention can be achieved by the following technical scheme: an aging-resistant TPV central control armrest pad comprises the following raw materials in parts by weight: 50-60 parts of TPV, 20-30 parts of high-density polyethylene, 1-5 parts of cross-linking agent, 1.5-2 parts of lubricant, 5-10 parts of plasticizer and 0.5-1 part of antioxidant;
the TPV agent consists of the following components in parts by weight: 50-60 parts of EPDM, 20-40 parts of polypropylene, 0.1-5 parts of anti-aging agent, 1-3 parts of light stabilizer, 1-2 parts of vulcanizing agent and 0.5-1 part of vulcanizing aid.
In the anti-aging TPV central control handrail pad, the preparation of the TPV material comprises the steps of mixing EPDM rubber, two thirds of polypropylene, an anti-aging agent and a light stabilizer mixer, feeding the mixture into a double-screw extruder for primary plasticating, and granulating to obtain first semi-finished product particles; uniformly mixing the first semi-finished product particles, a vulcanizing agent and a vulcanizing aid, feeding the mixture into a double-screw extruder for secondary plasticating, dynamically vulcanizing, and granulating to obtain second semi-finished product particles; and uniformly mixing the second semi-finished product particles with the rest polypropylene, and then sending the mixture into a double-screw extruder for carrying out third mixing, and granulating to obtain the TPV material.
In the aging-resistant TPV central control handrail pad, the processing temperature in the first plastication process is 160-190 ℃, and the screw rotating speed is 200-300r/min; the processing temperature in the secondary plastication process is 160-200 ℃, and the screw rotating speed is 300-400r/min; the processing temperature in the third plastication process is 160-190 ℃, and the screw rotating speed is 400-500r/min.
In the aging-resistant TPV central control handrail pad, the antioxidant is any one or a mixture of at least two of tetrapentaerythritol ester, hindered phenol antioxidants and hindered amine antioxidants.
In the aging-resistant TPV central control handrail pad, the light stabilizer is any one or a mixture of at least two of hindered amine light stabilizer and organonickel complex.
In the aging-resistant TPV central control handrail pad, the lubricant is any one or a mixture of at least two of silicone powder, silicone master batch, silicone oil, vinyl bis-stearamide and hydroxy fatty acid lubricant.
In the aging-resistant TPV central control handrail pad, the cross-linking agent is any one or a mixture of at least two of dicumyl peroxide, benzoyl peroxide, di-tert-butyl peroxide and dicumyl hydroperoxide.
In the aging-resistant TPV central control handrail pad, the plasticizer is any one or a mixture of at least two of naphthenic white oil, aromatic white oil and paraffinic white oil.
Compared with the prior art, the invention can effectively improve the permanent deformation resistance and the processing forming property of the TPV material by the mutual cooperation and the synergistic effect of the TPV, the high-density polyethylene, the cross-linking agent, the lubricant, the plasticizer, the antioxidant and the like in proper proportion, so that the central control handrail gasket has good elasticity, compression deformation resistance and aging resistance, the application temperature range is wide, the cracking condition under long-time insolation is improved, and the service life is prolonged; lubricants are used to improve the processing and shaping characteristics of materials; the anti-aging performance of the material can be further improved by adding the antioxidant;
polypropylene can greatly improve the flowability of the TPV material by being limited to isotactic polymers, which have good solvent resistance, heat resistance and processing flowability; in the process of preparing the TPV material, a dynamic vulcanization technology is adopted, an organic peroxide crosslinking system is used as a crosslinking agent, and an allyl ester auxiliary crosslinking agent can effectively control the crosslinking degree and the uniformity of the crosslinking material; and the three plastication processing technologies are used, so that the blending process is more complete, the particle size of rubber phases in the blend is smaller, the distribution is more uniform, the entanglement among molecular chains is smaller, the disentanglement is relatively easy, and when the rotating speed of a screw is limited to be increased in the last plastication processing, the fluidity deterioration effect caused by the over vulcanization of the TPV material can be well reduced.
Detailed Description
The following are specific examples of the present invention, and the technical solutions of the present invention are further described, but the present invention is not limited to these examples.
Example 1
An aging-resistant TPV central control armrest pad comprises the following raw materials in parts by weight: 50-60 parts of TPV, 20-30 parts of high-density polyethylene, 1-5 parts of cross-linking agent, 1.5-2 parts of lubricant, 5-10 parts of plasticizer and 0.5-1 part of antioxidant;
the TPV agent consists of the following components in parts by weight: 50-60 parts of EPDM, 20-40 parts of polypropylene, 0.1-5 parts of anti-aging agent, 1-3 parts of light stabilizer, 1-2 parts of vulcanizing agent and 0.5-1 part of vulcanizing aid.
The preparation of the TPV material comprises the steps of adding EPDM rubber, two thirds of polypropylene, an anti-aging agent and a light stabilizer mixer, mixing, feeding into a double-screw extruder for primary plasticating, and granulating to obtain first semi-finished product particles; uniformly mixing the first semi-finished product particles, a vulcanizing agent and a vulcanizing aid, feeding the mixture into a double-screw extruder for secondary plasticating, dynamically vulcanizing, and granulating to obtain second semi-finished product particles; and uniformly mixing the second semi-finished product particles with the rest polypropylene, and then sending the mixture into a double-screw extruder for carrying out third mixing, and granulating to obtain the TPV material.
The processing temperature in the primary plastication process is 160-190 ℃, and the screw rotating speed is 200-300r/min; the processing temperature in the secondary plastication process is 160-200 ℃, and the screw rotating speed is 300-400r/min; the processing temperature in the third plastication process is 160-190 ℃, and the screw rotating speed is 400-500r/min.
The antioxidant is any one or a mixture of at least two of tetrapentaerythritol ester, hindered phenol antioxidants and hindered amine antioxidants.
The light stabilizer is any one or a mixture of at least two of hindered amine light stabilizer and organic nickel complex.
The lubricant is any one or a mixture of at least two of silicone powder, silicone master batch, silicone oil, vinyl bis-stearamide and hydroxy fatty acid lubricant.
The cross-linking agent is any one or a mixture of at least two of dicumyl peroxide, benzoyl peroxide, di-tert-butyl peroxide and dicumyl hydroperoxide.
The plasticizer is any one or a mixture of at least two of naphthenic white oil, aromatic white oil and paraffin-based white oil.
The invention can effectively improve the permanent deformation resistance and the processing forming property of the TPV material by the mutual cooperation and synergistic effect of the TPV, the high-density polyethylene, the cross-linking agent, the lubricant, the plasticizer, the antioxidant and the like according to the proper proportion, so that the central control handrail gasket has good elasticity, compression deformation resistance and aging resistance, the application temperature range is wide, the cracking condition under long-time insolation is improved, and the service life is prolonged; lubricants are used to improve the processing and shaping characteristics of materials; the anti-aging performance of the material can be further improved by adding the antioxidant;
polypropylene can greatly improve the flowability of the TPV material by being limited to isotactic polymers, which have good solvent resistance, heat resistance and processing flowability; in the process of preparing the TPV material, a dynamic vulcanization technology is adopted, an organic peroxide crosslinking system is used as a crosslinking agent, and an allyl ester auxiliary crosslinking agent can effectively control the crosslinking degree and the uniformity of the crosslinking material; and the three plastication processing technologies are used, so that the blending process is more complete, the particle size of rubber phases in the blend is smaller, the distribution is more uniform, the entanglement among molecular chains is smaller, the disentanglement is relatively easy, and when the rotating speed of a screw is limited to be increased in the last plastication processing, the fluidity deterioration effect caused by the over vulcanization of the TPV material can be well reduced.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (8)
1. The anti-aging TPV central control handrail pad is characterized by comprising the following raw materials in parts by weight: 50-60 parts of TPV, 20-30 parts of high-density polyethylene, 1-5 parts of cross-linking agent, 1.5-2 parts of lubricant, 5-10 parts of plasticizer and 0.5-1 part of antioxidant;
the TPV agent consists of the following components in parts by weight: 50-60 parts of EPDM, 20-40 parts of polypropylene, 0.1-5 parts of anti-aging agent, 1-3 parts of light stabilizer, 1-2 parts of vulcanizing agent and 0.5-1 part of vulcanizing aid.
2. An aging resistant TPV center control arm rest pad as set forth in claim 1 wherein: the preparation of the TPV material comprises the steps of adding EPDM rubber, two thirds of polypropylene, an anti-aging agent and a light stabilizer mixer, mixing, feeding into a double-screw extruder for primary plasticating, and granulating to obtain first semi-finished product particles; uniformly mixing the first semi-finished product particles, a vulcanizing agent and a vulcanizing aid, feeding the mixture into a double-screw extruder for secondary plasticating, dynamically vulcanizing, and granulating to obtain second semi-finished product particles; and uniformly mixing the second semi-finished product particles with the rest polypropylene, and then sending the mixture into a double-screw extruder for carrying out third mixing, and granulating to obtain the TPV material.
3. An aging resistant TPV center control arm rest pad as set forth in claim 1 wherein: the processing temperature in the primary plastication process is 160-190 ℃, and the screw rotating speed is 200-300r/min; the processing temperature in the secondary plastication process is 160-200 ℃, and the screw rotating speed is 300-400r/min; the processing temperature in the third plastication process is 160-190 ℃, and the screw rotating speed is 400-500r/min.
4. An aging resistant TPV center control arm rest pad as set forth in claim 1 wherein: the antioxidant is any one or a mixture of at least two of tetrapentaerythritol ester, hindered phenol antioxidants and hindered amine antioxidants.
5. An aging resistant TPV center control arm rest pad as set forth in claim 1 wherein: the light stabilizer is any one or a mixture of at least two of hindered amine light stabilizer and organic nickel complex.
6. An aging resistant TPV center control arm rest pad as set forth in claim 1 wherein: the lubricant is any one or a mixture of at least two of silicone powder, silicone master batch, silicone oil, vinyl bis-stearamide and hydroxy fatty acid lubricant.
7. An aging resistant TPV center control arm rest pad as set forth in claim 6 wherein: the cross-linking agent is any one or a mixture of at least two of dicumyl peroxide, benzoyl peroxide, di-tert-butyl peroxide and dicumyl hydroperoxide.
8. An aging resistant TPV center control arm rest pad as set forth in claim 1 wherein: the plasticizer is any one or a mixture of at least two of naphthenic white oil, aromatic white oil and paraffin-based white oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310743478.2A CN116790067A (en) | 2023-06-21 | 2023-06-21 | Anti-aging TPV central control handrail pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310743478.2A CN116790067A (en) | 2023-06-21 | 2023-06-21 | Anti-aging TPV central control handrail pad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116790067A true CN116790067A (en) | 2023-09-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310743478.2A Pending CN116790067A (en) | 2023-06-21 | 2023-06-21 | Anti-aging TPV central control handrail pad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116790067A (en) |
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2023
- 2023-06-21 CN CN202310743478.2A patent/CN116790067A/en active Pending
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