CN113388192A - High-toughness low-temperature-resistant highlight regenerated PP (polypropylene) modified material and preparation method thereof - Google Patents

High-toughness low-temperature-resistant highlight regenerated PP (polypropylene) modified material and preparation method thereof Download PDF

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CN113388192A
CN113388192A CN202110425511.8A CN202110425511A CN113388192A CN 113388192 A CN113388192 A CN 113388192A CN 202110425511 A CN202110425511 A CN 202110425511A CN 113388192 A CN113388192 A CN 113388192A
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regenerated
parts
modified material
temperature
gloss
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CN113388192B (en
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徐名智
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Changtai Iridium Technology Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3045—Sulfates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
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    • Y02W30/62—Plastics recycling; Rubber recycling

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Abstract

A high-toughness low-temperature-resistant highlight regenerated PP modified material is prepared from the following components in parts by weight: and (3) recovering PP resin: 100 parts of (A); UHMWPE resin: 30-50 parts; a compatilizer: 5-15 parts; nano barium sulfate: 20-30 parts of a solvent; coupling agent: 0.5-1.5 parts; modifying agent: 1-2 parts; a stabilizer: 1-2 parts; antioxidant: 1-2 parts; lubricant: 1-3 parts; high-efficiency dispersant: 0.5-1 part. The regenerated PP modified material overcomes the defects in the prior art, and has the advantages of high toughness, low temperature resistance, high gloss and the like.

Description

High-toughness low-temperature-resistant highlight regenerated PP (polypropylene) modified material and preparation method thereof
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a high-toughness low-temperature-resistant highlight regenerated PP (polypropylene) modified material and a preparation method thereof.
Background
PP (polypropylene) is a thermoplastic material, a polymer obtained by addition polymerization of propylene, one of the largest varieties of general-purpose thermoplastic resins, and is widely used in various fields of industrial production. The polypropylene is a white waxy material, has transparent and light appearance, the specific gravity of about 0.9, the use temperature range of-30 to 140 ℃, and is resistant to acid, alkali, salt solution and various organic solvents. However, polypropylene is decomposed at high temperature and under the action of oxidation, and the ultraviolet light used daily for products can cause the degradation of the polypropylene to different degrees due to the high temperature and high shear of extrusion granulation and injection molding processing. The strength and toughness of the recycled polypropylene composite material are greatly reduced during recycling, and the recycled polypropylene composite material becomes brittle and easy to crack particularly at low temperature, so that the use of the polypropylene recycled material is limited.
UHMWPE (ultra-high molecular weight polyethylene) is unbranched linear polyethylene with the molecular weight of more than 100 ten thousand, is thermoplastic engineering plastic with a linear structure and excellent comprehensive performance, and has extremely excellent ductility and toughness, stable chemical property and strong ageing resistance. However, because the viscosity of the molten state of the ultra-high molecular weight polyethylene is very high and the fluidity is very poor, it is difficult to adopt a general injection molding method, which limits the use of the ultra-high molecular weight polyethylene in sanitary products.
Since both PP and PE are polyolefins and are nonpolar materials, the blending of PP and PE is not mutually exclusive. However, the difference in molecular weight is so large that the compatibility between the two is gradually reduced and the two cannot be effectively combined. If UHMWPE (ultra-high molecular weight polyethylene) is adopted, the molecular weight of the UHMWPE is more than 100 ten thousand, the molecular weight is several times or even dozens of times larger than that of the common homopolymerized PP, and the difference of melt viscosity is large, so that a compatilizer is needed to improve the bonding force of the UHMWPE and the PP. The addition of a common compatilizer (such as OBC) cannot effectively restrict the flow states of PP and UHMWPE in the processing process, and as a non-Newtonian fluid, the huge difference of viscosity can cause that PP with good fluidity can form a peak-crossing in UHMWPE with poor fluidity, a large amount of PP can be quickly filled to the tail end of an injection molding product, and UHMWPE is retained at the front end of the product or even at a pouring gate, so that the reinforcing effect of the material cannot be well embodied on the injection molding product.
In recent years, with the emphasis on environmental protection in China, the environmental protection requirement is continuously improved, and the recycling and regeneration of plastic parts are increasingly emphasized under the large environments such as advocating energy conservation, emission reduction, plastic restriction and the like. As one of the largest varieties of general thermoplastic resins, the production quantity of waste products is remarkable, and the means of natural degradation can not solve the environmental damage caused by the waste products, so that the recycling of the waste products is urgent. But the molecular chain bond of the polypropylene is not high, and the mechanical property of the recycled product is greatly reduced by light, heat and oxygen aging in a series of processing and using processes of the product. Therefore, a solution is urgently needed to recycle the recycled PP on the premise of maintaining the good performance and appearance of the PP. China invention CN 105542297B discloses a regenerative composite material for automobile parts and a preparation process thereof, wherein the high strength of the material is obtained by adding long glass fibers based on a recycled PP material, but the appearance of the material is rough due to the existence of the glass fibers; china invention CN 106046537B discloses a special material for a recycled HDPE compatible modified recycled PP drainage corrugated pipe and a preparation method thereof, wherein a large amount of used stiffening master batches are calcium carbonate, which greatly reduces the glossiness of the material while improving the strength of the material; the invention CN 105504508B of China discloses a high-impact and matt modified regenerated PP material and a preparation method thereof, calcium carbonate and wollastonite are used as fillers, so that the material has poor glossiness, the glossiness is lower than 40, the tensile strength is low, and the highest implementation case is not more than 20 MPa.
Disclosure of Invention
The invention aims to solve the problem of overcoming the defects in the prior art and provides a high-toughness low-temperature-resistant high-gloss regenerated PP modified material and a preparation method thereof.
In order to achieve the above purpose, the solution of the invention is:
a high-toughness low-temperature-resistant highlight regenerated PP modified material is prepared from the following components in parts by weight:
and (3) recovering PP resin: 100 parts of (A);
UHMWPE resin: 30-50 parts;
a compatilizer: 5-15 parts;
nano barium sulfate: 20-30 parts of a solvent;
coupling agent: 0.5-1.5 parts;
modifying agent: 1-2 parts;
a stabilizer: 1-2 parts;
antioxidant: 1-2 parts;
lubricant: 1-3 parts;
high-efficiency dispersant: 0.5-1 part.
Further, the compatilizer is compounded by OBC, POE and ethylene propylene diene monomer.
Further, the recovered PP resin is homo-polypropylene.
Further, the coupling agent is a titanium aluminate coupling agent.
Further, the modifier is a compound of ethoxylated trimethylolpropane triacrylate and 2, 5-dimethyl-2, 5-bis (tert-butylperoxy) hexane.
Further, the stabilizer is compounded by carbodiimide and terephthalamide.
Further, the antioxidant is compounded by antioxidant 168 and antioxidant 1010.
Further, the lubricant is vinyl bis stearamide.
Further, the high-efficiency dispersant is
Figure BDA0003029388120000041
A homopolymer.
A preparation method of a high-toughness low-temperature-resistant highlight regenerated PP modified material comprises the following steps:
step 1, weighing the raw materials of each component in the high-toughness low-temperature-resistant highlight regenerated PP modified material in proportion, then dropwise adding a coupling agent into nano barium sulfate, and stirring to obtain treated nano barium sulfate;
step 2, stirring and recovering the PP resin, the UHMWPE resin and the compatilizer, fully mixing, adding white mineral oil, uniformly stirring, wherein the addition amount of the white mineral oil is 0.5-1% of the total weight of the components, adding the lubricant and the efficient dispersant, uniformly stirring, sequentially adding the modifier, the stabilizer and the antioxidant, uniformly stirring, and finally adding the treated nano barium sulfate and stirring to obtain a mixture;
and 3, adding the mixture into a granulator, heating and extruding, volatilizing the white mineral oil in the extrusion process, and then cooling and granulating to obtain the regenerated PP modified material.
Further, in the step 3, the pelletizer is a co-directional parallel extrusion pelletizer.
Further, in the step 3, the extrusion temperature of the pelletizer is 200-.
After the structure is adopted, the regenerated PP modified material prepared by the invention has excellent comprehensive performance, the mechanical strength is superior to that of the recycled PP before modification, the strength and the toughness of the prepared closestool cover plate can reach the level of the material for the common closestool cover plate, the toughness is improved compared with the common recycled PP material, the glossiness is also kept good, and the recycled PP is recycled on the premise of keeping the good performance and the appearance of the PP.
Detailed Description
The invention discloses a high-toughness low-temperature-resistant highlight regenerated PP (polypropylene) modified material which comprises the following raw materials: and recovering the PP resin, the UHMWPE resin, the compatilizer, the nano barium sulfate, the coupling agent, the modifier, the stabilizer, the antioxidant, the lubricant and the high-efficiency dispersant.
Specifically, the high-toughness low-temperature-resistant highlight regenerated PP modified material is prepared from the following components in parts by weight:
and (3) recovering PP resin: 100 parts of (A);
UHMWPE resin: 30-50 parts;
a compatilizer: 5-15 parts;
nano barium sulfate: 20-30 parts of a solvent;
coupling agent: 0.5-1.5 parts;
modifying agent: 1-2 parts;
a stabilizer: 1-2 parts;
antioxidant: 1-2 parts;
lubricant: 1-3 parts;
high-efficiency dispersant: 0.5-1 part.
The recycled PP resin adopted by the invention can be homo-polypropylene so as to ensure the glossiness of the modified material, and the recycled material of the toilet cover plate can be adopted when the recycled PP resin is used for preparing the toilet cover plate, and is produced by homo-polypropylene, so that the recycled PP resin can be more uniform and stable in the whole batch by mixing and stirring large batches of the recycled material. After the modification, the polypropylene with high glossiness can be obtained, and the requirement of the toilet cover plate is met.
The invention adopts UHMWPE as the toughening and reinforcing component of the modified material. The addition content of the UHMWPE in the formula is 30-50 parts, because the mechanical property of the material is greatly improved by less than 50 parts of UHMWPE, otherwise, the strength of the material is greatly reduced by excessive UHMWPE, and the fluidity of the system is poor due to excessive viscosity of the UHMWPE, so that the injection molding processing is difficult.
The compatilizer adopted by the invention is compounded by OBC, POE and ethylene propylene diene monomer. The molecular structure of the compound block polymer is provided with ethylene, propylene, butylene and octene chain segments, namely the propylene and ethylene chain segments are compatible, and the compound block polymer has very good compatibility with PP resin and UHMWPE resin, can be used as a compatilizer of the PP resin and the UHMWPE resin, provides more enhanced compatibility for the PP resin and the UHMWPE resin, improves the low-temperature toughness and the fluidity of the material, improves the performance of the composite material, is beneficial to processing and molding of the composite material, and obtains a product with excellent appearance. The three block copolymers are matched together, so that excellent toughness can be maintained, the compatibility among different olefins is greatly improved, and the compatibility between UHMWPE and PP is effectively improved. Meanwhile, due to the fact that molecular weight distributions of the OBC, the POE and the ethylene propylene diene monomer are different, the compatilizer system covers a wide molecular weight area to form step distribution, and the molecular weight difference between the PP and the UHMWPE is filled, so that the molecular weight distribution in the modified material is more uniform and continuous, and larger faults cannot occur. Therefore, compared with the common compatilizer, the compatilizer disclosed by the invention can enable PP and UHMWPE to be better compatible in the processing process, flow is mutually restricted in the injection molding processing, the defect of flow layering cannot occur, and each part of a final injection molding product can be effectively enhanced.
Moreover, compared with OBC, the price of POE and ethylene propylene diene monomer is more advantageous. And finally selecting the OBC/POE/ethylene propylene diene monomer according to the mass ratio of 2: 1: 1, compatibility and toughness are considered, and the performance-price ratio is high.
The patent adopts a high-efficiency dispersant as
Figure BDA0003029388120000071
The homopolymer is used as a lubricating dispersant, is a product of Honeywell corporation of Honeywell, is A-C polyethylene wax, is obtained by polymerization reaction of ethylene monomers, has relatively concentrated molecular weight, has more effective parts, has more excellent lubricating property and can provide super-strong external lubricating property compared with common polyethylene wax. Specifically, products of the type Honeywell A-C617A can be used as the high-efficiency dispersing agent. Due to the existence of the efficient lubricant, the processing performance of the modified material can be greatly improved, particularly the fluidity of the UHMWPE is improved, so that the UHMWPE can not be retained at the tail end of an injection molding product to form layering with PP, and the components of the modified material can be uniformly distributed in the injection molding product.
In the present invention, the coupling agent may be a titanium aluminate coupling agent.
The stabilizer can be compounded by carbodiimide and terephthalamide.
The antioxidant can be compounded by antioxidant 168 and antioxidant 1010.
The lubricant may be vinyl bis stearamide.
The modifier can be ethoxylated trimethylolpropane triacrylate (ETPTA) compounded with 2, 5-dimethyl-2, 5-bis (t-butylperoxy) hexane (DBPH). The compound system can carry out partial chain extension and crosslinking on degraded chain segments in the recycled PP material, so that the molecular weight of the material is improved, and the strength of the material is improved.
The nano barium sulfate treated by the titanium aluminate coupling agent is well compatible with a material main body, so that the strength of the material is improved, the crystallization of PP is promoted, and the strength and the glossiness of the material are further improved. By adding the efficient dispersant, the filler can be fully dispersed and uniformly dispersed. In addition, the formula is also added with a lubricant, and the lubricant can adopt vinyl bis stearamide. The high-efficiency dispersing agent can be used as an external lubricant, the lubricant vinyl bis stearamide can be used as an internal lubricant, the external lubricant can increase the lubricity of the surface of the material during processing, and the mechanical shearing force applied to the material is reduced, so that the material is easier to process and form; the internal lubricant can reduce the internal friction of the polymer, increase the melting rate and the melt deformability of the plastic, reduce the melt viscosity and improve the plasticizing performance. The efficient dispersant and the lubricant are used in a matched manner, so that the problem of poor flowability of the modified material after UHMWPE and OBC are added can be effectively solved, the modified material is easier to process, the flowability of a system is further improved, and the processing and forming of the product are guaranteed.
The addition content of the compatilizer in the formula is 5-15 parts, because the addition amount of the compatilizer is less than 5 parts, the compatibility of the PP resin and the UHMWPE resin is not obviously improved, and when the addition amount exceeds 15 parts, dispersion unevenness occurs and the cost is too high.
The adding content of the nano barium sulfate in the formula is 20-30 parts, because the adding amount of the nano barium sulfate is less than 20 parts, the gloss effect of the material is not obviously improved, and when the adding amount exceeds 30 parts, the material can be dispersed unevenly and become brittle. Meanwhile, the additive amount of more than 20 parts can well play a role of a nucleating agent and promote the crystallization of the PP material.
The invention also discloses a method for preparing the high-toughness low-temperature-resistant highlight regenerated PP modified material, which comprises the following steps:
step 1, weighing the raw materials of each component in the high-toughness low-temperature-resistant highlight regenerated PP modified material in proportion, then dropwise adding a coupling agent into nano barium sulfate, and stirring to obtain treated nano barium sulfate;
step 2, stirring and recovering the PP resin, the UHMWPE resin and the compatilizer, fully mixing, adding white mineral oil, uniformly stirring, wherein the addition amount of the white mineral oil is 0.5-1% of the total weight of the components, adding the lubricant and the efficient dispersant, uniformly stirring, sequentially adding the modifier, the stabilizer and the antioxidant, uniformly stirring, and finally adding the treated nano barium sulfate and stirring to obtain a mixture;
and 3, adding the mixture into a granulator, heating and extruding, volatilizing the white mineral oil in the extrusion process, and then cooling and granulating to obtain the regenerated PP modified material.
Further, the pelletizer in the step 3 is a co-directional parallel extrusion pelletizer.
Further, the extrusion temperature of the pelletizer in the step 3 is 200-.
In the preparation method, the nano barium sulfate is treated by using the coupling agent, and the dispersion effect and the compatibility of the nano barium sulfate can be improved after treatment; if the coupling agent treatment is not carried out, the nano barium sulfate is easy to disperse unevenly, so that the flowability is poor, and the product performance is reduced.
In the preparation method, the addition amount of the white mineral oil is very small and is 0.5-1 percent of the total weight of each component, the white mineral oil is gradually decomposed and volatilized in granulation, and the white mineral oil can enable powdery auxiliary agents such as a lubricant to be uniformly adhered to polymer particles to play a role in stirring and dispersing. The addition amount of other additives is small, and the addition amounts of a modifier, a stabilizer, an antioxidant, a lubricant and a high-efficiency dispersant in the formula are all within 3 parts. The stabilizer and the antioxidant can effectively improve the processing performance of the material, so that the material is not easy to be oxidized and degraded, and the weather resistance of the material is greatly improved.
By adopting the scheme, the high-toughness low-temperature-resistant high-gloss regenerated PP modified material is prepared by reasonably designing the components of the regenerated PP modified material and through simple operation steps, the application field of the regenerated PP material is expanded, and the method has popularization value.
The technical solution of the present invention is further illustrated by the following examples. The examples do not specify particular techniques or conditions, and are performed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.
Example 1
The formulation of this example is shown in Table 1, wherein the recycled PP resin is the recycled crushed material of the toilet lid, the UHMWPE resin is imported GUR 5113 from Germany, the compatibilizer is OBC (imported INFUSE 9530 from America), POE (American import DOW 8003) and ethylene propylene diene monomer are compounded, nano barium sulfate adopts nano-grade high-whiteness barium sulfate, a coupling agent adopts titanium aluminate, a modifier adopts ethoxylated trimethylolpropane triacrylate ETPTA and 2, 5-dimethyl-2, 5-di (tert-butylperoxy) hexane DBPH to be compounded according to 1/2, a stabilizer adopts carbodiimide and terephthalamide to be compounded according to 1/1, an antioxidant adopts antioxidant 168 and antioxidant 1010 to be compounded according to 1/1, a lubricant adopts vinyl distearamide, and a high-efficiency dispersant adopts American import Honeywell A-C617A.
TABLE 1 prescription of regenerated PP modified material
Figure BDA0003029388120000101
Figure BDA0003029388120000111
The manufacturing steps of the filling material are as follows:
1) pouring nano barium sulfate into a stirring barrel, uniformly dripping a titanium aluminate coupling agent, stirring for 20min, and finally pouring out the powder; putting the corresponding recovered PP resin into a specified drying tower according to the formula amount, drying at the temperature of 80 ℃ for about 3 hours, and testing the water content until the water content reaches within 0.3%;
2) stirring the recycled PP resin, UHMWPE resin and a compatilizer, adding white mineral oil, stirring for 5min, adding a lubricant and a high-efficiency dispersant, stirring for 15min, adding a modifier, a stabilizer and an antioxidant, stirring for 5min, adding treated nano barium sulfate, and stirring for 10min to obtain a mixture;
3) and (3) extruding the mixture, wherein the extrusion equipment is a co-directional parallel extrusion granulator, the extrusion temperature is 220 ℃, the screw rotation speed is 400 rpm, cooling is carried out, and finally, granulation is carried out to obtain the regenerated PP modified material.
The performance of the prepared material is detected as shown in the following table 2, and as can be seen from the table 2, the modified material has excellent comprehensive performance and high glossiness, and can be directly used for producing toilet cover plates.
TABLE 2 Performance test Table for regenerated PP modified Material
Figure BDA0003029388120000112
Figure BDA0003029388120000121
Example 2
The formulation of this example is shown in Table 3, wherein the recycled PP resin is the recycled crushed material of the toilet lid, the UHMWPE resin is imported GUR 5113 from Germany, the compatibilizer is OBC (imported INFUSE 9530 from America), POE (American import DOW 8003) and ethylene propylene diene monomer are compounded, nano barium sulfate adopts nano-grade high-whiteness barium sulfate, a coupling agent adopts titanium aluminate, a modifier adopts ethoxylated trimethylolpropane triacrylate ETPTA and 2, 5-dimethyl-2, 5-di (tert-butylperoxy) hexane DBPH to be compounded according to 1/2, a stabilizer adopts carbodiimide and terephthalamide to be compounded according to 1/1, an antioxidant adopts antioxidant 168 and antioxidant 1010 to be compounded according to 1/1, a lubricant adopts vinyl distearamide, and a high-efficiency dispersant adopts American import Honeywell A-C617A.
TABLE 3 prescription of regenerated PP modified material
Figure BDA0003029388120000122
Figure BDA0003029388120000131
The manufacturing steps of the filling material are as follows:
1) pouring nano barium sulfate into a stirring barrel, uniformly dripping a titanium aluminate coupling agent, stirring for 20min, and finally pouring out the powder; putting the corresponding recovered PP resin into a specified drying tower according to the formula amount, drying at the temperature of 80 ℃ for about 3 hours, and testing the water content until the water content reaches within 0.3%;
2) stirring the recycled PP resin, UHMWPE resin and a compatilizer, adding white mineral oil, stirring for 5min, adding a lubricant and a high-efficiency dispersant, stirring for 15min, adding a modifier, a stabilizer and an antioxidant, stirring for 5min, adding treated nano barium sulfate, and stirring for 10min to obtain a mixture;
3) and (3) extruding the mixture, wherein the extrusion equipment is a co-directional parallel extrusion granulator, the extrusion temperature is 220 ℃, the screw rotation speed is 400 rpm, cooling is carried out, and finally, granulation is carried out to obtain the regenerated PP modified material.
The performance of the prepared material is detected as shown in the following table 4, and as can be seen from the table 4, the modified material has excellent comprehensive performance and high glossiness, and can be directly used for producing toilet cover plates.
TABLE 4 Performance test Table for regenerated PP modified Material
Test items Performance data
Tensile strength, MPa 33
Notched impact strength, 23 ℃ kJ/m2 28
Notched impact strength at-10 ℃ kJ/m2 9.5
Melt index, g/10min (230 ℃,2.16kg) 11
Gloss, incident light angle 60 ° 88
Example 3
The formulation of this example is shown in Table 5, wherein the recycled PP resin is recycled crushed material of toilet cover plate, the UHMWPE resin is imported GUR 5113 from Germany, the compatibilizer is OBC (imported INFUSE 9530 from America), POE (American import DOW 8003) and ethylene propylene diene monomer are compounded, nano barium sulfate adopts nano-grade high-whiteness barium sulfate, a coupling agent adopts titanium aluminate, a modifier adopts ethoxylated trimethylolpropane triacrylate ETPTA and 2, 5-dimethyl-2, 5-di (tert-butylperoxy) hexane DBPH to be compounded according to 1/2, a stabilizer adopts carbodiimide and terephthalamide to be compounded according to 1/1, an antioxidant adopts antioxidant 168 and antioxidant 1010 to be compounded according to 1/1, a lubricant adopts vinyl distearamide, and a high-efficiency dispersant adopts American import Honeywell A-C617A.
TABLE 5 prescription of regenerated PP modified material
Name of raw materials Parts by mass
Recovery of PP resin 100
UHMWPE 50
Compatilizer 15
Nano barium sulfate 30
Coupling agent 1.2
Modifying agent 1.5
Stabilizer 1.2
Antioxidant agent 1.2
Lubricant agent 2
High-efficiency dispersing agent 0.7
The manufacturing steps of the filling material are as follows:
1) pouring nano barium sulfate into a stirring barrel, uniformly dripping a titanium aluminate coupling agent, stirring for 20min, and finally pouring out the powder; putting the corresponding recovered PP resin into a specified drying tower according to the formula amount, drying at the temperature of 80 ℃ for about 3 hours, and testing the water content until the water content reaches within 0.3%;
2) stirring the recycled PP resin, UHMWPE resin and a compatilizer, adding white mineral oil, stirring for 5min, adding a lubricant and a high-efficiency dispersant, stirring for 15min, adding a modifier, a stabilizer and an antioxidant, stirring for 5min, adding treated nano barium sulfate, and stirring for 10min to obtain a mixture;
3) and (3) extruding the mixture, wherein the extrusion equipment is a co-directional parallel extrusion granulator, the extrusion temperature is 220 ℃, the screw rotation speed is 400 rpm, cooling is carried out, and finally, granulation is carried out to obtain the regenerated PP modified material.
The performance of the prepared material is detected as shown in the following table 6, and as can be seen from the table 6, the modified material has excellent comprehensive performance and high glossiness, and can be directly used for producing toilet cover plates.
TABLE 6 Performance test Table for regenerated PP modified Material
Test items Performance data
Tensile strength, MPa 36
Notched impact strength, 23 ℃ kJ/m2 25
Notched impact strength at-10 ℃ kJ/m2 9
Melt index, g/10min (230 ℃,2.16kg) 11
Gloss, incident light angle 60 ° 92
Example 4
The formulation of this example is shown in Table 7, wherein the recycled PP resin is the recycled crushed material of the toilet lid, the UHMWPE resin is imported GUR 5113 from Germany, the compatibilizer is OBC (imported INFUSE 9530 from America), POE (American import DOW 8003) and ethylene propylene diene monomer are compounded, nano barium sulfate adopts nano-grade high-whiteness barium sulfate, a coupling agent adopts titanium aluminate, a modifier adopts ethoxylated trimethylolpropane triacrylate ETPTA and 2, 5-dimethyl-2, 5-di (tert-butylperoxy) hexane DBPH to be compounded according to 1/2, a stabilizer adopts carbodiimide and terephthalamide to be compounded according to 1/1, an antioxidant adopts antioxidant 168 and antioxidant 1010 to be compounded according to 1/1, a lubricant adopts vinyl distearamide, and a high-efficiency dispersant adopts American import Honeywell A-C617A.
TABLE 7 prescription of regenerated PP modified material
Name of raw materials Parts by mass
Recovery of PP resin 100
UHMWPE 40
Compatilizer 10
Nano barium sulfate 20
Coupling agent 0.8
Modifying agent 1.5
Stabilizer 1.2
Antioxidant agent 1.2
Lubricant agent 1.7
High-efficiency dispersing agent 0.7
The manufacturing steps of the filling material are as follows:
1) pouring nano barium sulfate into a stirring barrel, uniformly dripping a titanium aluminate coupling agent, stirring for 20min, and finally pouring out the powder; putting the corresponding recovered PP resin into a specified drying tower according to the formula amount, drying at the temperature of 80 ℃ for about 3 hours, and testing the water content until the water content reaches within 0.3%;
2) stirring the recycled PP resin, UHMWPE resin and a compatilizer, adding white mineral oil, stirring for 5min, adding a lubricant and a high-efficiency dispersant, stirring for 15min, adding a modifier, a stabilizer and an antioxidant, stirring for 5min, adding treated nano barium sulfate, and stirring for 10min to obtain a mixture;
3) and (3) extruding the mixture, wherein the extrusion equipment is a co-directional parallel extrusion granulator, the extrusion temperature is 220 ℃, the screw rotation speed is 400 rpm, cooling is carried out, and finally, granulation is carried out to obtain the regenerated PP modified material.
The performance of the prepared material is detected as shown in the following table 8, and as can be seen from the table 8, the modified material has excellent comprehensive performance and high glossiness, and can be directly used for producing toilet cover plates.
TABLE 8 Performance test Table for regenerated PP modified Material
Test items Performance data
Tensile strength, MPa 34
Notched impact strength, 23 deg.C,kJ/m2 23
Notched impact strength at-10 ℃ kJ/m2 7.5
Melt index, g/10min (230 ℃,2.16kg) 12
Gloss, incident light angle 60 ° 87
Example 5
The formula of this example is shown in table 9, wherein the recycled PP resin is a recycled crushed material of a toilet lid, the UHMWPE resin is GUR 5113 imported from germany, the compatibilizer is composed of OBC (imported from usa) 9530, POE (imported from usa) 8003 and epdm rubber, in this example, no nano barium sulfate and a coupling agent are added, the modifier is composed of ethoxylated trimethylolpropane triacrylate ETPTA and 2, 5-dimethyl-2, 5-bis (t-butylperoxy) hexane DBPH 1/2, the stabilizer is composed of carbodiimide and terephthalamide 1/1, the antioxidant is composed of antioxidant 168 and antioxidant 1010 according to 1/1, the lubricant is vinyl distearamide, and the high efficiency dispersant is imported from honeywell a-C617A.
TABLE 9 prescription of regenerated PP modified material
Name of raw materials Parts by mass
Recovery of PP resin 100
UHMWPE 50
Compatilizer 15
Nano barium sulfate 0
Coupling agent 0
Modifying agent 1.5
Stabilizer 1.2
Antioxidant agent 1.2
Lubricant agent 1.5
High-efficiency dispersing agent 0.7
The manufacturing steps of the filling material are as follows:
1) putting the corresponding recovered PP resin into a specified drying tower according to the formula amount, drying at the temperature of 80 ℃ for about 3 hours, and testing the water content until the water content reaches within 0.3%;
2) stirring the recycled PP resin, UHMWPE resin and a compatilizer, adding white mineral oil, stirring for 5min, adding a lubricant and a high-efficiency dispersant, stirring for 15min, adding a modifier, a stabilizer and an antioxidant, and stirring for 5min to obtain a mixture;
3) and (3) extruding the mixture, wherein the extrusion equipment is a co-directional parallel extrusion granulator, the extrusion temperature is 220 ℃, the screw rotation speed is 400 rpm, cooling is carried out, and finally, granulation is carried out to obtain the regenerated PP modified material.
The performance of the prepared material is tested as shown in the following table 10, and as can be seen from the table 10, the modified material has excellent comprehensive performance and high glossiness, and can be directly used for producing toilet cover plates.
TABLE 10 Performance test Table for regenerated PP modified Material
Test items Performance data
Tensile strength, MPa 31
Notched impact strength, 23 ℃ kJ/m2 29
Notched impact strength at-10 ℃ kJ/m2 11
Melt index, g/10min (230 ℃,2.16kg) 14
Gloss, incident light angle 60 ° 79
As can be seen from the above reorganization formula, the glossiness of the material is greatly influenced without adding barium sulfate.
As comparative examples, the following Table 11 is a material property test table of the recycled PP material.
Comparative example 1
TABLE 11 Performance test Table for recycled PP Material
Figure BDA0003029388120000191
Figure BDA0003029388120000201
As can be seen from the performance tables shown in the tables 2, 4, 6, 8, 10, 11, the regenerated PP modified material has excellent comprehensive performance, the mechanical strength is superior to that of the recycled PP before modification, the strength and toughness reach the level of the common material for toilet covers, and meanwhile, the toughness at the low temperature of minus 10 ℃ is improved compared with that of the common recycled PP material, so that the recycled PP material is not easy to become brittle and crack at the low temperature, and the glossiness is also kept good. The tensile strength of the regenerated PP modified material is higher than that of the modified regenerated PP material in the prior art, the glossiness of the modified regenerated PP material is far better than that of the modified regenerated PP material in the prior art, and the recycled PP is recycled on the premise of keeping good performance and appearance of the PP.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.

Claims (12)

1. The high-toughness low-temperature-resistant highlight regenerated PP modified material is characterized by being prepared from the following components in parts by weight:
and (3) recovering PP resin: 100 parts of (A);
UHMWPE resin: 30-50 parts;
a compatilizer: 5-15 parts;
nano barium sulfate: 20-30 parts of a solvent;
coupling agent: 0.5-1.5 parts;
modifying agent: 1-2 parts;
a stabilizer: 1-2 parts;
antioxidant: 1-2 parts;
lubricant: 1-3 parts;
high-efficiency dispersant: 0.5-1 part.
2. The high-toughness low-temperature-resistant high-gloss regenerated PP modified material as claimed in claim 1, wherein: the compatilizer is compounded by OBC, POE and ethylene propylene diene monomer.
3. The high-toughness low-temperature-resistant high-gloss regenerated PP modified material as claimed in claim 1, wherein: the recycled PP resin is homopolymerized polypropylene.
4. The high-toughness low-temperature-resistant high-gloss regenerated PP modified material as claimed in claim 1, wherein: the coupling agent is a titanium aluminate coupling agent.
5. The high-toughness low-temperature-resistant high-gloss regenerated PP modified material as claimed in claim 1, wherein: the modifier is a compound of ethoxylated trimethylolpropane triacrylate and 2, 5-dimethyl-2, 5-di (tert-butyl peroxy) hexane.
6. The high-toughness low-temperature-resistant high-gloss regenerated PP modified material as claimed in claim 1, wherein: the stabilizer is compounded by carbodiimide and terephthalamide.
7. The high-toughness low-temperature-resistant high-gloss regenerated PP modified material as claimed in claim 1, wherein: the antioxidant is compounded by an antioxidant 168 and an antioxidant 1010.
8. The high-toughness low-temperature-resistant high-gloss regenerated PP modified material as claimed in claim 1, wherein: the lubricant is vinyl bis stearamide.
9. The high-toughness low-temperature-resistant high-gloss regenerated PP modified material as claimed in claim 1, wherein: the high-efficiency dispersant is A-C homopolymers.
10. A preparation method of a high-toughness low-temperature-resistant highlight regenerated PP modified material comprises the following steps:
step 1, weighing the raw materials of each component in the high-toughness low-temperature-resistant highlight regenerated PP modified material according to any one of claims 1 to 9 in proportion, then dropwise adding a coupling agent into nano barium sulfate, and stirring to obtain treated nano barium sulfate;
step 2, stirring and recovering the PP resin, the UHMWPE resin and the compatilizer, fully mixing, adding white mineral oil, uniformly stirring, wherein the addition amount of the white mineral oil is 0.5-1% of the total weight of the components, adding the lubricant and the efficient dispersant, uniformly stirring, sequentially adding the modifier, the stabilizer and the antioxidant, uniformly stirring, and finally adding the treated nano barium sulfate and stirring to obtain a mixture;
and 3, adding the mixture into a granulator, heating and extruding, volatilizing the white mineral oil in the extrusion process, and then cooling and granulating to obtain the regenerated PP modified material.
11. The method for preparing the high-toughness low-temperature-resistant high-gloss regenerated PP modified material according to claim 10, wherein the method comprises the following steps: in the step 3, the pelletizer is a co-directional parallel extrusion pelletizer.
12. The method for preparing high toughness, low temperature resistance and high gloss regenerated PP modified material according to claim 10 or 11, wherein: in the step 3, the extrusion temperature of the granulator is 200-.
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