Green preparation method of tire rubber powder/polypropylene thermoplastic elastomer

A technology of thermoplastic elastomer and polypropylene, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of black tires and pollution of waste tires, and achieve the effects of reducing material costs, reducing secondary pollution, and protecting the environment

Pending Publication Date: 2021-07-23
XUZHOU COLLEGE OF INDAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of tire rubber powder to directly prepare thermoplastic elastomers avoids the serious pollution that occurs when reclaimed rubber is prepared, and provides a new way to solve the "black" pollution problem of waste tires

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Various raw materials and their mass parts are:

[0024] Powdered Polypropylene…………………………………………… 20

[0025] Whole tire rubber powder (80 mesh)……………………………………80

[0026] Regenerative activator RV………………………………… 2.5

[0027] Compatibilizer BIBP……………………………………………0.9

[0028] Vulcanizing agent S 8 ……………………………………… 0.3

[0029] Zinc oxide ZnO………………………………… 5.0

[0030] Stearic acid SA………………………………………1.0

[0031] Antiaging agent 1010………………………………… 0.3

[0032] Pine tar ……………………………………………30

[0033] Its preparation method, carry out as follows:

[0034] Step 1) Activate the rubber powder first. Add 0.75 kg of regenerative activator RV to 24.0 kg of 80-mesh whole tire rubber powder, then stir evenly, and pass the above mixture on an open mill for 30 times at 100°C to obtain activated rubber powder.

[0035] Step 2) Plasticize 6.0 kg PP at 160 °C, add 0.09 kg sulfur S in sequence 8 , 0.27 kg of compatibilizer BIBP, 1.50 kg of zinc oxide ZnO, 0.30 kg of stearic acid SA, 0.09 k...

Embodiment 2

[0039] Various raw materials and their mass parts are:

[0040] Powdered Polypropylene…………………………………40

[0041] Whole tire rubber powder (100 mesh)……………………………60

[0042] Regenerative activator RV…………………………… 2.5

[0043] Compatibilizer AD……………………………………… 1.5

[0044] Vulcanizing agent S 8 ……………………………………… 0.3

[0045] Zinc oxide ZnO……………………………… 5.0

[0046] Stearic acid SA…………………………………… 1.0

[0047] Antiaging agent 1010……………………………… 0.3

[0048] Pine tar …………………………………… 22.5

[0049] Its preparation method, carry out as follows:

[0050] Step 1) Activate the rubber powder first. Add 0.75 kg of regenerative activator RV to 18.0 kg of 100-mesh whole tire rubber powder, then stir evenly, and pass the above mixture on an open mill for 30 times at 100°C to obtain activated rubber powder.

[0051] Step 2) Plasticize 12.0 kg of PP and PP at 160°C, and add 0.09 kg of sulfur S in sequence 8 , 0.45 kg compatibilizer AD, 1.50 kg zinc oxide ZnO, 0.30 kg stearic acid SA, 0.09 kg antio...

Embodiment 3

[0055] Various raw materials and their mass parts are:

[0056] Powdered Polypropylene…………………………………45

[0057] Whole tire rubber powder (100 mesh)…………………………55

[0058]Regenerative activator RV…………………………… 2.5

[0059] Compatibilizer TMPTA…………………………………3.0

[0060] Vulcanizing agent S 8 ……………………………………… 0.3

[0061] Zinc Oxide ZnO………………………………5.0

[0062] Stearic acid SA…………………………………… 1.0

[0063] Antiaging agent 1010……………………………… 0.3

[0064] Paraffin oil……………………………… 20.5

[0065] Its preparation method, carry out as follows:

[0066] Step 1) Activate the rubber powder first. Add 0.75 kg of regenerative activator RV to 16.5 kg of 100-mesh whole tire rubber powder, then stir evenly, and roll the above mixture on the open mill for 30 times at 100°C to obtain activated rubber powder.

[0067] Step 2) Plasticize 13.5 kg PP at 160 °C, add 0.09 kg sulfur S in sequence 8 , 0.90 kg of compatibilizer TMPTA, 1.50 kg of zinc oxide ZnO, 0.30 kg of stearic acid SA, 0.09 kg of antioxi...

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Abstract

The invention discloses a green preparation method of a tire rubber powder / polypropylene thermoplastic elastomer. The tire rubber powder / polypropylene thermoplastic elastomer comprises full tire rubber powder; the preparation method comprises the following steps: adding the regeneration activating agent into the whole tire rubber powder, activating in a high-pressure kettle at 120 DEG C, plasticizing polypropylene at 160 DEG C, sequentially adding the sulfur, the compatilizer, the zinc oxide, the stearic acid, the antioxidant 1010 and the environment-friendly softening agent, and uniformly mixing to obtain a premix; adding the mixture into a double-screw extruder at 180 DEG C, carrying out reactive mixing by virtue of a dynamic cross-linking system and strong mechanical shear stress, so as to obtain the tire rubber powder / polypropylene thermoplastic elastomer, and carrying out mold pressing to form sheets. The performance detection shows that the tensile strength reaches 20.12 MPa, the elongation at break reaches 688.57%, the TRP / PP TPE not only has the high elasticity of rubber, but also has the plastic processing characteristic of plastic, and meanwhile, the foul smell of DCP serving as a compatilizer is removed.

Description

technical field [0001] The invention relates to a green preparation method of tire rubber powder / polypropylene thermoplastic elastomer, which belongs to the field of new material manufacturing. Background technique [0002] At present, the following common problems exist in the production of thermoplastic elastomer (TPE): high price; poor mechanical properties; poor processing performance, easy to stick to the screw; strong smell, unable to make daily and high-end products. [0003] To sum up, the thermoplastic elastomers currently on the market are expensive, and their performance cannot meet the requirements of many downstream users. Contents of the invention [0004] In order to overcome the shortcomings of the above-mentioned existing technologies and reduce the cost of thermoplastic elastomers, rubber powder-based thermoplastic elastomers (RPTPE) have been developed, which are developed and prepared with tire rubber powder and thermoplastic resins, which have the high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L21/00C08L23/12C08L95/00C08K3/22C08K5/09C08K3/06C08K5/134C08K5/14C08K5/103C08J5/18
CPCC08J5/18C08J2321/00C08J2423/12C08J2495/00C08K2003/2296C08K5/09C08K3/06C08K5/1345C08K5/14C08K5/103
Inventor 王艳秋祝木伟刘太闯马庆丽臧亚南翁国文靳玲姚亮张小萍
Owner XUZHOU COLLEGE OF INDAL TECH
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