TW200528519A - Rubber and plastic new compound polymers - Google Patents

Abstract

The present invention provides a new polymer. According to the invention, the bottle-neck in synthesizing rubber and plastic has been broken through. A polymer dissociation and polymerization device is used to apply mechanical and thermal dynamic principles on rubber and plastics by controlling temperature and pressure in order to dissociate and dissolve rubber and plastics and polymerize them to form a new polymer material, i.e. a rubber and plastic new compound polymer (abbreviated as rubber-plastics). The rubber-plastics, through the polymer dissociation and polymerization device, can be granulated into rubber-plastic particles to be processed by injection molding or extrusion molding or direct compression molding to form products. The invented production process is characterized in that no addition of catalyst or chemical during the process. Most importantly, the invented rubber and plastic new compound polymers can be recycled. Thus, the invented process can alleviate the current situation of environmental pollution caused by waste tires and waste plastics and produce rubber and plastic new compound polymers free of secondary pollution.

Description

200528519 发明 Description of the invention: [Technical field to which the invention belongs] The present invention relates to a polymer, particularly a rubber and plastic polymer having impact resistance at room temperature. 5 [Previous technology] The basic formula used in the production of tires is 70% synthetic rubber polymer (ie, styrene-butadiene rubber, Styrene-butadiene rubber) and 30% natural rubber. Among them, styrene-butadiene rubber is polymerized from styrene monomer and butadiene monomer. Different tire manufacturers have their unique 10-property formulas based on the requirements of material strength, so that the blending ratio of styrene and butadiene is different Different, the following figure uses X and Y to represent the different formula conditions of each tire waste dealer:

^ CH2 —C ^ 7CH2 -C = c ~ CH2 ^ T However, what to do after the tire is discarded is always for the industry and the environment

The unit is very disturbing. Not only is the toxic gas produced by the combustion of tires, the high temperature released by the 15 combustion has also become one of the culprits in reducing the life of the incinerator. If the tires are shredded and glued and used to lay the sports track or asphalt pavement, the rubber particles will only be temporarily stagnated. Once rubbed, the rubber material will be detached, which still constitutes environmental pollution and cannot be used for secondary recycling of resources. On the other hand, the polymer research community has been trying to polymerize rubber and plastic. However, if rubber and plastic are combined with additives, chemical catalysts or solvents, the polymer formed will contain highly polluting substances. Therefore, it is not possible to see products made from rubber and plastic polymer materials on page 4, 200528519. SUMMARY OF THE INVENTION The main object of the present invention is to provide a rubber and plastic polymer having impact resistance at room temperature. 5 Another object of the present invention is to provide a manufacturing method for polymerizing rubber and plastic without adding a chemical catalyst or a catalyst, so that the material meets environmental protection requirements. Still another object of the present invention is to provide a manufacturing method using waste rubber and plastics to produce a polymer having better material characteristics than plastic raw materials, so as to effectively utilize the recovered waste tires. Therefore, the polymer of the present invention is a polymer of styrene-butadiene rubber and a plastic material. The plastic material is selected from the group consisting of high-density polyethylene, polypropylene, low-density polyethylene (LDPE), and polystyrene ( PS), Polymethylmethacrylate (PMMA), Polyethylene (PVC), Polybutadiene 15 (PB) 〇 The main effects of the present invention 疋 Simply use waste tires and plastic materials to heat and increase pressure, synthesis New polymer, while completely recycling waste tires, reducing environmental pollution. In particular, the material properties of the obtained polymer are better than those of plastic materials, and the application elasticity of the polymer is increased. 20 [Embodiments] The technology, features, and effects achieved by the present invention will be described in detail in the following reference drawings and corresponding preferred embodiments. The first embodiment of the present invention is to polymerize waste tires with high-density polyethylene (HDPE). For the sake of illustration, the experiment is shown in FIG. Of course, a single-tank polymer decomposition polymerizer can also be used here. First, '疋 recycle the recovered waste tire powder, in order to increase the contact area, the size of the ground rubber particles must be less than 20 mesh (mesw, and for the convenience of collection and processing', preferably greater than 120 mesh, in In this example, 30 mesh is taken as an example. 10 15 When the weight percentage reaches 20% of the rubber powder and 80% polyethylene, it is added to the multi-tank polymer decomposition polymerizer from the feed port 2 As shown in Figure 2, the spiral agitator 10 in the polymerization machine 1 is rotated and pressurized so that the pressure in the polymerization machine 1 reaches 200 to 1500 psi, which is about 12,000 psi in this example. The changer 3 controls the temperature in the polymerizer 1 in the range of Fahrenheit to degrees, and the retention time in the polymerizer 1 is about 16 seconds. The polymer is initially agitated to cause collision and shear with each other. After the decomposition, the energy absorbed is used to decompose. The molecule “is dissolved, and then quickly polymerized into a new synthetic material of rubber and plastic. The stoneware 10 here can be not only uniaxial, but also biaxial or multiaxial. Finally, the discharge port 4 After molding, cooling and pelletizing, the rubber-plastic polymerization disclosed in the present invention is obtained Of course, rubber and plastic polymers can not only be made into rubber and plastic pellets instead of polyethylene pellets for the production of injection molds or extrusion mold products; they can also directly produce extrusion mold products. — Polyethylene terephthalate (PE) and tires When the polymerization of stupid rubber occurs, the mechanism of the chemical formula polymerization is as follows: SBR + polyethylene> Polystyrene styrene butadiene rubber 20 200528519 — C = C — CH2 know seventeen ch2-CH2 friends

Vw v. R \ r (λ Μ \ J V. CH2 — Chl ·

W where M is the mixing ratio of styrene-butadiene rubber, N is the mixing ratio of pe, M + N = 100%, W multiplied by the total molecular weight in the largest bracket, 5

This product is the weight of the rubber and plastic after polymerization, which is the number of production (Wx = the total weight of production.) 〇 high density polyethylene (HDPE) and waste tire rubber (SBR) powder, mixed in different proportions, The above process can be heated and pressurized to obtain different synthetic materials. Finally, according to IZOD, notched Charpy test at different temperatures, the impact resistance test results are shown in Table 1: Temperature -32 ° C -20 ° C 25 ° C HDPE impact force impact force impact force (%) (ft-lb / in.) Result (ft-lb / in.) Result (ft-lb / in.) Result 80 1.29 Part 1.65 Part 16.09 Partial Fracture --- A Fracture 70 2.49 Part 2.75 Part 13.01 Unfractured Fracture 60 2.29 Part 2.88 Part 12.15 --------- Unfractured Fracture 10 Table 1 Comparison of experimental results shows that 70% of recycled high-density polyethylene and

Page 7 200528519 30% waste tire rubber, 60% recycled high-density polyethylene and 40% waste tire rubber have impact resistance at room temperature. As for the results of its hardness, stress and strain, shown in Table 2 below: HDPE Shore D Stress at offset Stress at Max. Max. (%) Hardness (MPa, 5%) load, (MPa) Strain (%) 80 55 13.4 16.1 75 70 53 11.3 14.3 66 60 51 8.30 10.8 54

Tables 2 and 5 are in accordance with ASTM D 638. The results of hardness, stress and strain are shown in Table 3 below;

Flexural Property ASTM D 790 ASTM D 1238 HDPE Modulus, Stress at Yield Flow Rate, (%) (MPa) (max. MPa) (190C, g / min) 80 366 15.1 0.53 70 291 11.6 0.32 60 210 9.3 0.29 Table 3

Its deflection complies with ASTM D790, the standard material test; flow rate conforms to ASTM D1238, the standard material test. 10 Through the above comparison test, it can be seen that the material properties of the polystyrene styrene-butadiene rubber obtained by polymerization can replace the original polyethylene. If the above waste tire rubber is polymerized with polypropylene (PP), the chemical structure of the chemical formula 200528519 is as follows: ~ (ch2 -also demon ch2 — C = C — CH2 知 七 CH2-CH 知 〇 | CH, — ^-CH2-CH) \ JmL | 0 1 ch3 I z,

N w styrene-butadiene rubber + polypropylene + polypropylene styrene-butadiene rubber is mixed with 80% polypropylene and 20% waste tire rubber, and 70/30, 60/40 ratio, respectively. The size is 40 mesh, the temperature in the polymerization machine is set to about 400 degrees Fahrenheit, and the retention time in the polymerization machine is about 12 seconds. Temperature -32 ° C PP impact force result (%) (ft-lb / in ·) 80 0.71 Complete • --- ~ Fracture 70 1.03 Completely fracture 60 1.56 Completely fracture -20 ° C ------------ Fracture --- ~~~-. Partial fracture ---__ 25 ° C ^^ Impact force (ft-lb / in.) Impact force (ft-lb / in.) Knot ^ 0.78 3.79 not broken 1.53 7.99 not broken 1.95 Partially broken— ^. 8.66 Not broken Table 4 j 4 It can be seen that 70% of the recycled polypropylene is measured by IZOD, notched Charpy ^ p | ene and 30% waste tire rubber, 60% of recycled propylene and 40% of polypropylene Waste tire rubbers also have impact resistance at room temperature, and their characteristics are in accordance with US Standard Page 9 200528519 Material Test ASTM D 256. The results of hardness, stress and strain are shown in Table 5 below: PP Shore D Stress at offset Stress at Max. Max. Strain (%) Hardness (MPa, 5%) load, MPa) (%) 80 56 15.6 16.6 27 70 54 12.1 15.4 51 60 50 8.8 12.5 61

Table 5 complies with ASTM D 638. The results of hardness, stress and strain are shown in Table 6 below:

Flexural Property, ASTM D 790 ASTM D 1238 PP Modulus Stress at Yield Flow Rate 230C, (%) (MPa) (max. MPa) (g / min) 80 635 21.5 1.43 70 461 16.8 0.42 60 350 12.5 0.18 Table 6

Its flexibility is in accordance with ASTM D 790. The flow rate complies with ASTM D 1238, a standard material test. Through the above comparison test, it can be known that the material properties of the polypropylene styrene-butadiene rubber-plastic 10 obtained by polymerization can replace the original polypropylene. During the whole process, no additives, chemical catalysts or catalysts, or toxic substances were added. The rubber granules produced can not only replace the 200528519 generation of PE and PP, but also have a distribution ratio that has material properties that exceed pE and pp. In addition, the mixing ratio of plastic and rubber can be adjusted according to the actual needs of the product. The mixing ratio of rubber and plastic is from 15% to 85%, and the temperature control is generally between 280 ° and 450 °. 5 For the above polymer particles, the results shown in Figures 3 and 4 can be obtained during X-ray analysis. Among them, Figure 3 is a polystyrene styrene butadiene rubber containing 80% recycled high ethene. Figure 4 is a result of polypropylene styrene butadiene rubber containing recycled polypropylene. _ Figure 2 The left part of the curve is uneven, and the right part is relatively straight. It is not obvious that this synthetic material has both crystalline and amorphous structures. The properties of crystalline polymers are high extensibility, high flexibility, high hardness, and creep resistance. Non-crystalline polymers have a significant impact on thermoset properties, resulting in high impact resistance and low shrinkage. Figure 4 also shows the crystalline and amorphous structures. In addition, the curve on the left and Figure 3 show the difference in chemical composition between the ethylene and polypropylene substructures. Of course, those who are familiar with chemical materials can easily understand that in addition to high-degree φ polyethylene and polypropylene, low-density polyethylene, polyethylene polymethylmethacrylate, polyvinyl chloride, polybutadiene, etc. Octapolymer is polystyrene styrene-butadiene rubber (RPS), polymethacrylic acid ^ = 20 styrene-butadiene rubber (RPMMA), polybutylene styrene + RPV, polystyrene styrene-butadiene rubber (RPB). According to the disclosure of the present invention, two different products, rubber and plastic, originally had different chemical bonds, and the eight-blade cymbals could not bond and polymerize with each other. After the disclosure of the present invention, it is effective ... 200528519 Creates a bottleneck that is incompatible with most characteristic polymers. Thus, ~ unique random copolymers, and new materials with different properties. Advantages of rubber and plastics ... The quality of rubber and plastic particles is similar to that of virgin resins (pp, PE, etc.). It can replace virgin resins and is used in materials for extrusion and injection molds. '10 15 20 ^ ^ A variety of excellent characteristics and qualities, including uniform stiffness, resistance to 1 ± financial durability, and dimensional stability (invariance). Rubber and plastic materials have anti-ultraviolet and anti-slip properties. Rubber and plastic materials can be made entirely from recycled materials. Rubber and plastic materials can be dyed with dark pigments, or coated with oily water-based latex and epoxy paints on the surface of the product. Rubber and plastic materials can save 15% to 25% of manufacturing time. Rubber and plastic materials can save about 10% to 25% of energy when replacing the original resin production line. E: The new plastic synthetic material can be completely recycled and reused. It can be mixed again with the new synthetic rubber material. ^ ,,,,, and hold the original characteristics of the new synthetic plastic material.

200528519 [Brief description of the figure] Figure 1 is a schematic cross-sectional view of a multi-tank polymer decomposition polymerizer. Figure 2 is an axial view of the agitator. FIG. 3 is an X-ray analysis chart of a waste tire powder 5 and a polyethylene polymer product made according to the first preferred embodiment of the present invention. Fig. 4 is an X-ray analysis chart of waste tire powder and polypropylene polymer product made according to the second preferred embodiment of the present invention. [Comparison Table of Symbols and IT Parts] _ 1… Multi-tank Polymer Decomposition Polymerization Machine 10 2… Feeding Port 3… Heat Exchanger 4 ··· Discharging Port 10… Agitator Page 13

Claims (1)

200528519 Patent application scope: 1. A polymer containing 10.5% to 59.5% of styrene-butadiene rubber and 85% to 15% of a plastic material, wherein the plastic material is selected from the following collection, the Collection includes high density polyethylene, polypropylene, low density polyethylene (LDPE), polystyrene (ps), polymethylmethacrylate (PMMA), polyvinyl chloride (PVC), polybutadiene (pB ) Or a mixture thereof. 2. A method for producing a polymer as described in item 1 of the scope of the patent application, including the following steps: a) grinding waste styrene-butadiene rubber-containing tires to particles smaller than 2 () mesh; b) grinding waste tire particles 15% to 85% mixed with 85% to 15% of plastic materials' wherein the plastic material is selected from the group consisting of high density polyethylene, polypropylene, low density polyethylene (LDPE), polyethylene (PS), polymethylmethacrylate (PMMA), poly (vinyl chloride), polybutadiene (PB), or a mixture thereof; and 0 heating and pressurizing the mixed materials to a predetermined time. 3. The method as described in item 2 of the scope of patent application, further comprising the steps d) of cooling and pelletizing. 20 Page 14