CN115926340A - PVC floor modified material and preparation method thereof - Google Patents
PVC floor modified material and preparation method thereof Download PDFInfo
- Publication number
- CN115926340A CN115926340A CN202211603631.3A CN202211603631A CN115926340A CN 115926340 A CN115926340 A CN 115926340A CN 202211603631 A CN202211603631 A CN 202211603631A CN 115926340 A CN115926340 A CN 115926340A
- Authority
- CN
- China
- Prior art keywords
- parts
- temperature
- pvc
- pvc floor
- resin powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a preparation method of a PVC floor modified material, which comprises the following substances in parts by weight: 53.37-56.88 parts of PVC resin powder; 18.99-22.30 parts of a plasticizer; 13.9-17.79 parts of a filling agent; 2.44-2.79 parts of a heat stabilizer; 1.67-4.41 parts of a processing aid; 2.85-3.62 parts of a flame retardant. The performance of the PVC resin powder can be improved by adding plasticizers, fillers, heat stabilizers, processing aids and flame retardants with different proportions to prepare the PVC plastic particles, and the modified material has good popularity, low molding temperature, stable size, wear resistance, oil resistance, low temperature resistance, excellent physical properties and excellent comprehensive performance when used for injection molding of a 500 x 500mm hard spliced floor.
Description
Technical Field
The invention relates to the technical field of PVC modified materials, in particular to a PVC floor modified material and a preparation method thereof.
Background
Polyvinyl chloride (PVC) plastic is a polymer of vinyl chloride monomer, one of the commonly used thermoplastics. Pure polyvinyl chloride resins are rigid thermoplastic materials with decomposition temperatures very close to the plasticizing temperature and poor mechanical strength. Therefore, the polyvinyl chloride resin cannot be used for molding products, and a plasticizer, a stabilizer, a filler and the like must be added to improve the performance, so as to prepare polyvinyl chloride plastic particles, and then the polyvinyl chloride plastic particles are processed into various products. According to the amount of plasticizer added, hard polyvinyl chloride and soft polyvinyl chloride are divided. Polyvinyl chloride is one of the earliest commercialized and widely-used general-purpose thermoplastics, and is a synthetic material widely used in the world today. It has the advantages of light weight, high strength, insulation, flame retardance, corrosion resistance, excellent comprehensive physical properties, low price, wide raw material sources and the like; the hard PVC has the following disadvantages due to the small amount of the added plasticizer: 1. poor flowability, and particularly difficult injection molding to keep good dimensional stability when a slightly large product is injected; 2. the processing temperature is high, and the processing time is long; 3. the resin composition is poor in low temperature resistance, and generally becomes hard at a temperature of about-10 ℃ and brittle at a temperature of-20 ℃ or lower. Other modifiers are added into the PVC material formula to enhance the fluidity and cold resistance of the PVC material, reduce the ductility of the PVC material such as processing temperature and the like. Most of the common PVC plastics with the hardness of more than 95A are used for wire plugs and small fittings, and have good performance in injection molding.
However, when used for injection molding of large-sized plastic products, the disadvantages of poor flowability, poor cold resistance, poor wear resistance, poor oil resistance and high processing temperature limit many applications.
Disclosure of Invention
In view of the above, it is necessary to provide a PVC floor modified material with good fluidity, low molding temperature, wear resistance, oil resistance and low temperature resistance, and a preparation method thereof.
A PVC floor modified material comprises the following substances in parts by weight: 53.37-56.88 parts of PVC resin powder; 18.99-22.30 parts of a plasticizer; 13.9-17.79 parts of a filler; 2.44-2.79 parts of a heat stabilizer; 1.67-4.41 parts of a processing aid; 2.85-3.62 parts of flame retardant.
Further, the PVC resin is prepared by mixing ethylene-process 1000-degree of polymerization resin powder, calcium carbide-process SG-5 resin powder, 800-degree of polymerization resin powder and 400-degree of polymerization JLTS-40 resin powder according to the proportion of 1-3.
Furthermore, the plasticizer is dioctyl terephthalate, trioctyl trimellitate, epoxidized soybean oil and dioctyl adipate which are mixed according to the ratio of 1 to 0.133-1.
Further, the filler is 2800-mesh heavy calcium carbonate and nano light calcium carbonate, and the weight ratio of the heavy calcium carbonate to the nano light calcium carbonate is 1:0.2-1, and then sieving for use, wherein the nano light calcium carbonate is subjected to activation treatment.
Further, the heat stabilizer is formed by mixing calcium stearate, zinc stearate, an antioxidant, a sodium silicate and hydrotalcite, wherein the weight ratio of the calcium stearate to the zinc stearate to the antioxidant to the sodium silicate is as follows: 20.05:16.82:11.56:28.96:22.61.
further, the processing aid comprises a first processing aid and a second processing aid, wherein the first processing aid is ACR-201, the ACR-201 is a copolymer of methyl methacrylate and acrylic ester, and the second processing aid is chlorinated polyethylene with a chlorine content of 30% -45%.
Further, the flame retardant is antimony trioxide with an antimony content of 99.99%, magnesium hydroxide and aluminum hydroxide, and the weight ratio of the flame retardant is 1:0-3:0-2.5 is used in combination.
And the method is applied to the preparation of the PVC floor modified material, and comprises the following steps:
s01, firstly weighing raw materials according to the weight ratio and mixing;
s02, sequentially putting the raw materials into a high-speed blender, stirring for 15-25min, and discharging the mixture into a cold mixing cylinder for cooling when the temperature of the mixture is raised to 145-170 ℃ and the raw materials are uniformly mixed and the resin powder is fluffy;
and S03, extruding and granulating the cooled raw materials by a conical double-screw extruder to obtain the PVC floor modified material.
Further, the screws of the twin-screw extruder are divided into six temperature zones, and the temperature of each temperature zone is respectively as follows: the temperature of the first zone is 145-155 ℃, the temperature of the second zone is 155-165 ℃, the temperature of the third zone is 165-170 ℃, the temperature of the fourth zone is 165-170 ℃, the temperature of the fifth zone is 165-170 ℃ and the temperature of the machine head is 150-165 ℃.
When the PVC floor modified material prepared by the invention is used for injection molding of a hard splicing floor with the thickness of 500 x 500mm, the flowability is good, the molding temperature is low, the size is stable, the PVC floor modified material is wear-resistant, oil-resistant and low-temperature-resistant, the physical property is excellent, and the comprehensive property is excellent.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
In the embodiment of the present application, the selected materials for the PVC base plate are as follows, but not limited thereto:
materials: trioctyl trimellitate, which is chemically linked in the pearl sea or a high-quality TOTM of Shandong blue sail group;
epoxidized soybean oil, high quality soybean oil produced by Haemar corporation;
2800 mesh heavy ultrafine calcium carbonate produced in Neizhou.
A PVC floor modified material comprises the following substances in parts by weight: 53.37-56.88 parts of PVC resin powder; 18.99-22.30 parts of a plasticizer; 13.9-17.79 parts of a filling agent; 2.44-2.79 parts of a heat stabilizer; 1.67-4.41 parts of a processing aid; 2.85-3.62 parts of flame retardant.
Preferably, the PVC resin is vinyl polymerization degree 1000 resin powder, calcium carbide process SG-5 resin powder, polymerization degree 800 resin powder and polymerization degree 400 JLTS-40 resin powder, and the PVC resin is mixed and sieved for use according to the proportion of 11 to 3. Specifically, the polymerization degree (molecular weight) of the PVC resin powder directly influences the physical properties of the PVC floor modified material, the higher the polymerization degree is, the higher the tensile strength and impact strength of a product are, the lower polymerization degree resin powder is quickly plasticized, the PVC floor modified material is good in fluidity and high in forming efficiency, and the PVC floor modified material can obtain good physical properties, stable size and high forming rate by mixing PVC resin powder with different polymerization degrees.
Preferably, the plasticizer is dioctyl terephthalate, trioctyl trimellitate, epoxidized soybean oil and dioctyl adipate which are mixed in a ratio of 1 to 0.133 to 0.333. Specifically, the dioctyl terephthalate (DOTP) is an environment-friendly plasticizer without phthalic acid, and has good compatibility, electrical insulation, cold resistance and heat resistance; the trioctyl trimellitate (TOTM) is a heat-resistant and durable plasticizer, has the advantages of low volatility and small mobility, and has excellent compatibility plasticizing performance, low-temperature performance and electrical performance; the epoxidized soybean oil is an auxiliary plasticizer and stabilizer, has good light and heat stabilization effects, is environment-friendly, nontoxic and low in volatility, and can improve the later-stage heat-resistant stability of the PVC floor modified material; the dioctyl adipate (DOA) is a good low-temperature-resistant plasticizer, has certain light resistance and heat resistance, and cannot be hardened and embrittled in the low-temperature environment due to the later-stage heat resistance stability of the PVC floor modifying material after the dioctyl adipate (DOA) is added; the four plasticizers are environment-friendly plasticizers, can reduce the acting force among molecular chains of the PVC material by matching, reduce the glass transition temperature and the flow temperature of PVC plastics and the melting point of microcrystals contained in the PVC plastics, improve the plasticity of resin, and enable the PVC floor modified material to achieve the effects of oil resistance, wear resistance, corrosion resistance and low temperature resistance.
Preferably, the filler is 2800-mesh heavy calcium carbonate and nano light calcium carbonate in a weight ratio of 1:0.2-1, and then sieving for use, wherein the nanometer light calcium carbonate is subjected to activation treatment. Specifically, the heavy calcium carbonate is subjected to surface treatment, so that the whiteness is increased, and the PVC floor modified material is bright in color and stable in molding size; the nanometer light calcium carbonate is added after being activated, so that the PVC floor modified material has high surface brightness and good molding fluidity.
Preferably, the heat stabilizer is formed by mixing calcium stearate, zinc stearate, an antioxidant, cork and hydrotalcite, and the weight ratio of the calcium stearate to the zinc stearate to the antioxidant to the cork to the hydrotalcite is as follows: 20.05:16.82:11.56:28.96:22.61. specifically, the stabilizer is environment-friendly and nontoxic, has good thermal stability, light stability and coloring capacity, and can enable the PVC floor modified material to have good dispersibility, compatibility and processing fluidity in the processing process, so that the PVC floor modified material has good thermal stability, stable color and high-efficiency heat resistance.
Preferably, the processing aid comprises a first processing aid and a second processing aid, the first processing aid is ACR-201, the ACR-201 is a copolymer of methyl methacrylate and acrylic ester, and the second processing aid is chlorinated polyethylene with a chlorine content of 30% -45%. Specifically, the copolymer of methyl methacrylate and acrylic ester can effectively accelerate the melting speed of a PVC blend, improve the balance torque, quickly glue, and improve the processability, and meanwhile, the copolymer of methyl methacrylate and acrylic ester is also an impact modifier, so that the impact strength of the PVC floor modifying material can be improved, the surface gloss of a product can be improved, the generation of water marks can be avoided, and the injection molding period can be shortened; the chlorine content of the chlorinated polyethylene CPE is 30% -45% of irregular chlorides formed by replacing hydrogen atoms on secondary carbon atoms in polyethylene molecules with chlorine atoms, and after the chlorine content is added, the plasticizing temperature can be reduced, the wear resistance of a finished product is effectively improved, and the flame retardance and the impact resistance of the PVC floor modifying material can be improved.
Preferably, the flame retardant is antimony trioxide with an antimony content of 99.99%, magnesium hydroxide and aluminum hydroxide, and the weight ratio of the flame retardant is 1:0-3:0-2.5 is used in combination. Specifically, the antimony trioxide is an efficient inorganic flame retardant, and has the effects of reducing fuming and hydrogen chloride generation besides the flame retardant effect in the PVC floor modifying material; the magnesium hydroxide has the functions of flame retardance, smoke abatement and filling, and the synergistic flame retardant effect of the magnesium hydroxide, the antimony trioxide and the aluminum hydroxide is greatly improved.
And the preparation method applied to the PVC floor modified material comprises the following steps:
s01, firstly weighing and mixing the raw materials according to the weight ratio;
s02, sequentially putting the raw materials into a high-speed blender, stirring for 15-25min, raising the temperature of the materials to 145-170 ℃, uniformly mixing the raw materials, and discharging the materials into a cold mixing cylinder for cooling when resin powder is fluffy;
and S03, extruding and granulating the cooled raw materials by a conical double-screw extruder to obtain the PVC floor modified material.
Preferably, the screws of the twin-screw extruder are divided into six temperature zones, and the temperature of each temperature zone is respectively as follows: the temperature of the first zone is 145-155 ℃, the temperature of the second zone is 155-165 ℃, the temperature of the third zone is 165-170 ℃, the temperature of the fourth zone is 165-170 ℃, the temperature of the fifth zone is 165-170 ℃ and the temperature of the machine head is 150-165 ℃.
The PVC floor modified material prepared from the PVC resin powder, the plasticizer, the filler, the heat stabilizer, the processing aid and the flame retardant has the advantages of good fluidity, low molding temperature, stable size, wear resistance, oil resistance, low temperature resistance, excellent physical properties and excellent comprehensive properties when used for injection molding of a hard spliced floor of 500 x 500mm; the preparation method has the advantages of simple process, convenient operation and control, stable quality, high production efficiency, low production cost and wide application, and can be used for large-scale industrial production.
The formulation, content and preparation method of the PVC floor modifying material of the invention are specifically described in the following with reference to a plurality of examples.
Example 1:
the composition, content and preparation method of the PVC floor modified material of the embodiment 1 are as follows:
taking the following substances in parts by weight:
55.74 parts of PVC resin powder: 55.74 parts of ethylene-process PVC resin powder with the polymerization degree of 800;
22.3 parts of a plasticizer: 16.71 parts of trioctyl trimellitate (TOTM), 2.7 parts of epoxidized soybean oil and 2.89 parts of dioctyl adipate;
13.93 parts of filler: 6.97 parts of activated nano light calcium carbonate and 6.96 parts of 2500-mesh heavy ultrafine calcium carbonate;
2.79 parts of heat stabilizer: 2.79 parts of an environment-friendly heat stabilizer;
0.27 part of lubricant: 0.14 part of liquid butyl stearate and 0.13 part of polyethylene wax;
1.40 parts of processing aid: 0.27 part of ACR-201PVC processing aid and 1.13 parts of chlorinated polyethylene CPE;
3.57 parts of flame retardant: 0.83 portion of antimony trioxide with the antimony content of 99.99 percent and 2.74 portions of aluminum hydroxide.
Weighing the raw materials according to the weight ratio, sequentially adding the filler, the PVC resin powder, the heat stabilizer, the lubricant, the processing aid and the plasticizer into a high-speed stirring mixer, stirring at a low speed for 5min, uniformly mixing the plasticizer and the PVC resin powder, stirring at a high speed for 12min, adding the flame retardant into the low-speed rotating mixer when the temperature of the raw materials is raised to 155 ℃ and the raw materials are uniformly mixed, and stirring at a full speed for 2min when the resin powder is fluffy, and then putting the raw materials into a cold mixing tank to cool the temperature of the raw materials to about 95 ℃; and extruding and granulating the cooled mixed raw materials by a conical vacuum double-screw extruder to obtain the industrial oil-resistant and wear-resistant PVC floor modified material.
The screw temperature of the double-screw extruder is as follows: the first zone temperature was 150 ℃, the second zone temperature was 155 ℃, the third zone temperature was 160 ℃, the fourth zone temperature was 160 ℃, the fifth zone temperature was 160 ℃ and the head temperature was 155 ℃.
Example 2
The composition, content and preparation method of the PVC floor modifying material of the embodiment 2 are as follows:
taking the following substances in parts by weight:
56.88 parts of PVC resin powder: 50.55 parts of ethylene PVC resin powder with the polymerization degree of 700 and 6.33 parts of JLTS-40 resin powder with the polymerization degree of 400;
20.24 parts of a plasticizer: 16.68 parts of trioctyl trimellitate, 2.52 parts of epoxidized soybean oil and 1.04 parts of dioctyl adipate;
13.9 parts of a filler: 7.58 parts of activated nano light calcium carbonate and 6.32 parts of 2800-mesh heavy ultrafine calcium carbonate;
2.78 parts of heat stabilizer: 2.78 parts of an environment-friendly heat stabilizer;
0.15 part of lubricant: 0.09 part of stearic acid (1801) and 0.06 part of polyethylene wax;
2.52 parts of processing aid: chlorinated polyethylene CPE-135A with chlorine content of 45% 1.51 parts and NBR with acrylonitrile content of 31% 1.01 parts.
3.53 parts of flame retardant: 1.01 parts of antimony trioxide with the antimony content of 99.99 percent and 2.52 parts of magnesium hydroxide.
Weighing the raw materials according to the weight ratio, sequentially adding the filler, the PVC resin powder, the heat stabilizer, the lubricant, the processing aid and the plasticizer into a high-speed stirring mixer, stirring at a low speed for 4min, uniformly mixing the plasticizer and the powder, stirring at a high speed for 12min, adding the flame retardant into the low-speed rotating mixer when the temperature of the material is raised to 155 ℃ and the raw materials are uniformly mixed, and stirring at a full speed for 2min when the resin powder is fluffy, and then putting the material into a cold stirring cylinder to cool the material to about 100 ℃; extruding and granulating the cooled mixed raw materials by a conical vacuum double-screw extruder under the vacuum pressure of-0.7 MPa to obtain the industrial oil-resistant and wear-resistant PVC floor modifying material.
The screw temperature of the double-screw extruder is as follows: the first zone temperature was 146 deg.C, the second zone temperature was 153 deg.C, the third zone temperature was 165 deg.C, the fourth zone temperature was 165 deg.C, the fifth zone temperature was 165 deg.C, and the head temperature was 160 deg.C.
Example 3:
the composition, content and preparation method of the PVC floor modifying material of the embodiment 3 are as follows:
taking the following substances in parts by weight:
53.37 parts of PVC resin powder: 23.71 parts of ethylene-process PVC resin powder with the polymerization degree of 700, 23.71 parts of ethylene-process PVC resin powder with the polymerization degree of 1000 and 5.95 parts of JLTS-40 resin powder with the polymerization degree of 400;
18.99 parts of a plasticizer: 7.11 parts of dioctyl terephthalate, 7.11 parts of trioctyl trimellitate, 2.37 parts of epoxidized soybean oil and 2.4 parts of cold-resistant plasticizer (DOS);
17.79 parts of filler: 11.85 parts of activated nano light calcium carbonate and 5.94 parts of 2800-mesh heavy ultrafine calcium carbonate;
2.61 parts of a heat stabilizer: 2.61 parts of an environment-friendly calcium zinc stabilizer;
0.23 part of a lubricant: 0.11 part of liquid butyl stearate and 0.12 part of polyethylene wax;
4.17 parts of processing aid: 0.38 part of P-551A methacrylic acid type, 1.42 parts of chlorinated polyethylene CPE135A with the chlorine content of 45 percent and 2.37 parts of NBR with the acrylonitrile content of 31 percent;
2.84 parts of flame retardant: 0.47 part of antimony trioxide with the antimony content of 99.99 percent, 1.27 parts of magnesium hydroxide and 1.1 parts of aluminum hydroxide.
Weighing the raw materials according to the weight ratio, sequentially adding the filler, the PVC resin powder, the heat stabilizer, the lubricant, the processing aid and the plasticizer into a high-speed stirring mixer, stirring at a low speed for 3min, uniformly mixing the plasticizer and the powder, stirring at a high speed for 12min, adding the flame retardant into the low-speed rotating mixer when the temperature of the material is increased to 165 ℃ and the raw materials are uniformly mixed, and stirring at a full speed for 2min when the resin powder is fluffy, and then putting the material into a cold stirring cylinder to cool the material to about 95 ℃; and extruding and granulating the stirred mixed raw materials by a conical vacuum double-screw extruder to obtain the industrial oil-resistant and wear-resistant PVC floor modified material.
The screw temperature of the twin-screw extruder is as follows: the first zone temperature was 148 ℃, the second zone temperature was 158 ℃, the third zone temperature was 168 ℃, the fourth zone temperature was 170 ℃, the fifth zone temperature was 170 ℃ and the head temperature was 165 ℃.
Example 4:
the composition, content and preparation method of the PVC floor modifying material of the embodiment 4 are as follows:
taking the following substances in parts by weight:
53.02 parts of PVC resin powder: 25.51 parts of ethylene-process PVC resin powder with the polymerization degree of 700 and 27.51 parts of ethylene-process PVC resin powder with the polymerization degree of 1000;
21.22 parts of a plasticizer: 15.9 parts of trioctyl trimellitate, 2.65 parts of epoxidized soybean oil and 2.67 parts of dioctyl adipate;
15.91 parts of filler: 13.25 parts of activated nano light calcium carbonate and 2.66 parts of 2800-mesh heavy ultrafine calcium carbonate;
2.44 parts of a heat stabilizer: 2.44 parts of an environment-friendly calcium zinc stabilizer;
0.42 part of lubricant: 0.28 part of stearic acid and 0.14 part of polyethylene wax;
3.56 parts of processing aid: 1.59 parts of chlorinated polyethylene CPE135A with the chlorine content of 45 percent, 1.59 parts of NBR with the acrylonitrile content of 31 percent and 0.38 part of ACR-201PVC processing aid;
3.43 parts of flame retardant: 0.79 portion of antimony trioxide with the antimony content of 99.99 percent and 2.64 portions of magnesium hydroxide.
Weighing the raw materials according to the weight ratio, sequentially adding the filler, the PVC resin powder, the heat stabilizer, the lubricant, the processing aid and the plasticizer into a high-speed stirring mixer, stirring at a low speed for 2min, uniformly mixing the plasticizer and the powder, stirring at a high speed for 10min, and adding the flame retardant into the low-speed rotating mixer to stir at full speed for 2min when the temperature of the material is raised to 165 ℃, the raw materials are uniformly mixed, and the resin powder is fluffy; and extruding and granulating the stirred raw materials by a conical vacuum double-screw extruder to obtain the industrial oil-resistant and wear-resistant PVC floor modifying material.
The screw temperature of the twin-screw extruder is as follows: the first zone temperature was 150 ℃, the second zone temperature was 155 ℃, the third zone temperature was 165 ℃, the fourth zone temperature was 170 ℃, the fifth zone temperature was 170 ℃ and the head temperature was 160 ℃.
Example 5:
the composition, content and preparation method of the PVC floor modifying material of the embodiment 5 are as follows:
taking the following substances in parts by weight:
54.22 parts of PVC resin powder: 12.04 parts of ethylene PVC resin powder with the polymerization degree of 700, 36.14 parts of ethylene PVC resin powder with the polymerization degree of 1000 and 6.04 parts of JLTS-40 resin powder with the polymerization degree of 400;
19.29 parts of a plasticizer: 14.45 parts of trioctyl trimellitate, 1.92 parts of epoxidized soybean oil and 2.92 parts of cold-resistant plasticizer (DOS);
18.07 parts of a filler: 12.04 parts of activated nano light calcium carbonate and 6.03 parts of 2800-mesh heavy ultrafine calcium carbonate;
2.65 parts of a heat stabilizer: 2.65 parts of an environment-friendly calcium zinc stabilizer;
0.24 part of lubricant: 0.13 part of liquid butyl stearate and 0.11 part of polyethylene wax;
2.41 parts of processing aid: 2.41 portions of NBR with the acrylonitrile content of 31 percent;
3.12 parts of flame retardant: 0.72 part of antimony trioxide with the antimony content of 99.99 percent and 2.4 parts of aluminum hydroxide.
Weighing the raw materials according to the weight ratio, sequentially adding the filler, the PVC resin powder, the heat stabilizer, the lubricant, the processing aid and the plasticizer into a high-speed stirring mixer, stirring at a low speed for 3min, uniformly mixing the plasticizer and the powder, stirring at a high speed for 10min, and adding the flame retardant into the mixer to stir at full speed for 2min when the temperature of the material rises to 155 ℃, the raw materials are uniformly mixed, and the resin powder is fluffy and rotates at a low speed; and extruding and granulating the stirred raw materials by a conical vacuum double-screw extruder to obtain the industrial oil-resistant and wear-resistant PVC floor modifying material.
The screw temperature of the twin-screw extruder is as follows: the first zone temperature was 155 deg.C, the second zone temperature was 160 deg.C, the third zone temperature was 165 deg.C, the fourth zone temperature was 168 deg.C, the fifth zone temperature was 170 deg.C, and the head temperature was 165 deg.C.
Table 1 shows the contents of the examples.
| Composition Properties | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| Ethylene-process PVC resin powder with polymerization degree of 800 | 55.74 | ||||
| Vinyl PVC resin powder with polymerization degree of 700 | 50.55 | 23.71 | 25.51 | 12.04 | |
| Ethylene JLTS-40 resin powder with polymerization degree of 400 | 6.33 | 5.95 | 6.04 | ||
| Ethylene-process PVC resin powder with polymerization degree of 1000 | 23.71 | 27.51 | 36.14 | ||
| Trioctyl trimellitate | 16.71 | 16.68 | 7.11 | 15.9 | 14.45 |
| Dioctyl terephthalate | 7.11 | ||||
| Epoxidized soybean oil | 2.7 | 2.52 | 2.37 | 2.65 | 1.92 |
| Cold-resistant plasticizer (DOS) | 2.4 | ||||
| Adipic acid dioctyl ester | 2.89 | 1.04 | 2.67 | ||
| Nano light calcium carbonate | 6.97 | 7.58 | 11.85 | 13.25 | 12.04 |
| 2500 mesh heavy calcium carbonate | 6.96 | ||||
| 2800 mesh heavy calcium carbonate | 6.32 | 5.94 | 2.66 | 6.03 | |
| Environment-friendly heat stabilizer | 2.79 | 2.78 | |||
| Environment-friendly calcium-zinc heat stabilizer | 2.61 | 2.44 | 2.65 | ||
| Liquid butyl stearate | 0.14 | 0.11 | 0.13 | ||
| Stearic acid (1801) | 0.09 | 0.28 | |||
| Polyethylene wax | 0.13 | 0.06 | 0.12 | 0.14 | 0.11 |
| ACR-201 processing aid | 0.27 | 0.38 | |||
| P-551A methacrylic acid type | 0.38 | ||||
| Chlorinated polyethylene | 1.13 | ||||
| NBR with 31% acrylonitrile content | 1.01 | 2.37 | 1.59 | 2.41 | |
| Chlorinated polyethylene with chlorine content of 45% | 1.51 | 1.42 | 1.59 | ||
| Antimony trioxide | 0.83 | 1.01 | 0.47 | 0.79 | 0.72 |
| Aluminum hydroxide | 2.74 | 1.1 | 2.4 | ||
| Magnesium hydroxide | 2.52 | 1.27 | 2.64 |
TABLE 2 Performance test Table
| Test items | Standard value | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| Tensile Strength (MPa) | ≥15.0 | 56.25 | 57.31 | 52.36 | 53.23 | 56.78 |
| Elongation at Break (%) | ≥100 | 148 | 156 | 176 | 152 | 167 |
| Melt index (g/10 min) | ≥10g/10min | 22.3 | 28.6 | 33.1 | 33.3 | 36.7 |
| Cold resistance | -20℃ | -25℃ | -25℃ | -25℃ | -40℃ | -40℃ |
| hardness/Shore (A) | 90-95 | 92 | 92 | 95 | 95 | 95 |
| Compression set (%) | ≦20 | 12.3 | 11.2 | 10.6 | 12.6 | 10.3 |
| Flame retardation (oxygen index) | ≧30 | 32 | 32.5 | 33.2 | 35 | 35.3 |
| Abrasion resistance (H22 grinding wheel 500G pressure 1000 r after weightlessness) | ≤0.25G | 0.213 | 0.186 | 0.226 | 0.238 | 0.196 |
By combining examples 1-5, standard values and the performance test table of Table 2, comparison can be found out that:
now, the examples 1 to 5 and the standard values are set as a comparison group for comparison, and the specific steps are as follows:
firstly, comparing the performances of the examples 1-5 by combining with standard values, and as can be seen from the data in table 1, the data of the examples 1-5 are obviously superior to the data of the standard values, which indicates that the technical scheme of the application optimizes the formula of the PVC floor modified material, and the tensile strength of the PVC floor modified material is obviously improved by adding the filler, the PVC resin powder, the heat stabilizer, the lubricant, the processing aid, the plasticizer and the flame retardant, wherein the tensile strength is optimal in example 2; the elongation at break is obviously improved, wherein the elongation at break is optimal in example 3; the melt index is significantly improved, wherein the melting effect of example 5 is optimal; the cold resistance is enhanced, wherein the cold resistance of the example 4 and the example 5 is optimal; the hardness is obviously improved, wherein the best is shown in examples 3-5; the percent compression set decreased, with example 5 being the most effective; the flame retardant index is obviously improved, wherein the flame retardant effect of the embodiment 5 is optimal; the wear resistance is improved, wherein the wear resistance of the embodiment 2 and the embodiment 5 is optimal, and when the PVC floor modified material prepared by the invention is used for injection molding of a hard split floor with the thickness of 500 x 500mm, the flowability is good, the molding temperature is low, the size is stable, the PVC floor modified material is wear-resistant, oil-resistant and low-temperature-resistant, the physical property is excellent, the comprehensive property is excellent, the process is simple, the operation and control are convenient, the quality is stable, the production efficiency is high, the production cost is low, the application is wide, and the PVC floor modified material can be industrially produced on a large scale.
Claims (9)
1. The PVC floor modified material is characterized by comprising the following substances in parts by weight: 53.37-56.88 parts of PVC resin powder; 18.99-22.30 parts of a plasticizer; 13.9-17.79 parts of a filler; 2.44-2.79 parts of a heat stabilizer; 1.67-4.41 parts of a processing aid; 2.85-3.62 parts of flame retardant.
2. The PVC floor modifying material as claimed in claim 1, wherein the PVC resin is a mixture of vinyl 1000 degree of polymerization resin powder, carbide SG-5 resin powder, 800 degree of polymerization resin powder, and 400 degree of polymerization JLTS-40 resin powder, which are mixed in a ratio of 1 to 3.
3. The PVC floor modification of claim 1, wherein the plasticizer is dioctyl terephthalate, trioctyl trimellitate, epoxidized soybean oil, and dioctyl adipate, mixed in a ratio of 1.
4. The PVC floor modifying material of claim 1, wherein the filler is 2800 mesh heavy calcium carbonate and nano light calcium carbonate in a weight ratio of 1:0.2-1, and then sieving for use, wherein the nano light calcium carbonate is subjected to activation treatment.
5. The PVC floor modifying material as claimed in claim 1, wherein the heat stabilizer comprises calcium stearate, zinc stearate, an antioxidant, cork and hydrotalcite, and the weight ratio of the calcium stearate, the zinc stearate, the antioxidant, the cork and the hydrotalcite is: 20.05:16.82:11.56:28.96:22.61.
6. the PVC floor modifying material according to claim 1, wherein the processing aid comprises a first processing aid and a second processing aid, the first processing aid is ACR-201, the ACR-201 is a copolymer of methyl methacrylate and acrylic ester, and the second processing aid is chlorinated polyethylene having a chlorine content of 30% to 45%.
7. The PVC floor modifying material of claim 1, wherein the flame retardant is antimony trioxide with an antimony content of 99.99%, magnesium hydroxide, aluminum hydroxide, and the weight ratio of 1:0-3:0-2.5 is used in combination.
8. A method for preparing a PVC floor modifying material, which is applied to the preparation of the PVC floor modifying material of any one of claims 1 to 7, the method comprising the steps of:
s01, firstly weighing and mixing the raw materials according to the weight ratio;
s02, sequentially putting the raw materials into a high-speed blender, stirring for 15-25min, and discharging the mixture into a cold mixing cylinder for cooling when the temperature of the mixture is raised to 145-170 ℃ and the raw materials are uniformly mixed and the resin powder is fluffy;
and S03, extruding and granulating the cooled raw materials by a conical double-screw extruder to obtain the PVC floor modified material.
9. The method for preparing the PVC floor modifying material according to claim 8, wherein the screw of the twin-screw extruder is divided into six temperature zones, and the temperature of each temperature zone is respectively as follows: the temperature of the first zone is 145-155 ℃, the temperature of the second zone is 155-165 ℃, the temperature of the third zone is 165-170 ℃, the temperature of the fourth zone is 165-170 ℃, the temperature of the fifth zone is 165-170 ℃ and the temperature of the machine head is 150-165 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211603631.3A CN115926340A (en) | 2022-12-14 | 2022-12-14 | PVC floor modified material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211603631.3A CN115926340A (en) | 2022-12-14 | 2022-12-14 | PVC floor modified material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115926340A true CN115926340A (en) | 2023-04-07 |
Family
ID=86652167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211603631.3A Pending CN115926340A (en) | 2022-12-14 | 2022-12-14 | PVC floor modified material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115926340A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105440504A (en) * | 2015-12-31 | 2016-03-30 | 东莞市祺龙电业有限公司 | Rat-proof PVC (polyvinyl chloride) modified material and preparation method thereof |
| CN112694689A (en) * | 2020-12-23 | 2021-04-23 | 深圳市天顺塑料有限公司 | High-fluidity PVC modified material for injection-molded spliced floors and preparation method thereof |
-
2022
- 2022-12-14 CN CN202211603631.3A patent/CN115926340A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105440504A (en) * | 2015-12-31 | 2016-03-30 | 东莞市祺龙电业有限公司 | Rat-proof PVC (polyvinyl chloride) modified material and preparation method thereof |
| CN112694689A (en) * | 2020-12-23 | 2021-04-23 | 深圳市天顺塑料有限公司 | High-fluidity PVC modified material for injection-molded spliced floors and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112694689A (en) | High-fluidity PVC modified material for injection-molded spliced floors and preparation method thereof | |
| JPH02124958A (en) | Thermoplastic polyvinyl chloride elastomer composition | |
| CN113105685B (en) | Chlorinated polyethylene blending modified high-density polyethylene material and preparation method thereof | |
| CN1164462A (en) | Rigid PVC direct-mixing injection material and its preparation method | |
| EP1590402B1 (en) | Solid concentrate composition for polymeric chain extension | |
| CN110305440B (en) | Environment-friendly flame-retardant ABS (acrylonitrile-butadiene-styrene) composite material and preparation method thereof | |
| CN116694003A (en) | Low-cost high-flame-retardance polyvinyl chloride composite material, preparation method and application | |
| CN113234276A (en) | Basic magnesium sulfate whisker modified polyethylene material and preparation method thereof | |
| KR100521005B1 (en) | Method for manufacturing poly vinyl chloride compounds and pvc compounds | |
| CN110951196B (en) | Corrosion-resistant and high-temperature-resistant PVC-C pipe and preparation method thereof | |
| CN115926340A (en) | PVC floor modified material and preparation method thereof | |
| CN100348658C (en) | Hard polyvinyl chloride composition and its preparation method | |
| CN111117114A (en) | PVC heat-resistant pipe and preparation method thereof | |
| CN112812472B (en) | Environment-friendly low-precipitation soft PVC material and preparation method thereof | |
| US10273334B2 (en) | Composition for polymeric chain extension | |
| CN115124797A (en) | Graphene composite rigid polyvinyl chloride pipe and preparation method thereof | |
| CN102399399A (en) | Novel polyvinyl chloride (PVC) elastomer cable material and preparation method thereof | |
| CN100335554C (en) | Whisker modified spiral polyvinyl-chloride pipe material composition for sanitary ware and its pipe material producing method and use | |
| CN112708221A (en) | High-performance PVC elastomer modified material and preparation method thereof | |
| JPH107855A (en) | Resin composition and molded resin article | |
| CN112480594B (en) | High-black flame-retardant ABS (acrylonitrile-butadiene-styrene) compound with extinction effect and preparation method and application thereof | |
| CN114316470B (en) | Rigidity improving method suitable for high-filling PVC material | |
| CN116218051A (en) | NBR/PP thermoplastic elastomer and preparation method thereof | |
| JP2805681B2 (en) | Thermoplastic elastomer composition | |
| CN106519478A (en) | Novel environment-friendly matte and oilproof polyvinyl chloride cable material special for electric wires and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |