CN115746344A - Ultra-high molecular weight polyethylene product and preparation method and application thereof - Google Patents
Ultra-high molecular weight polyethylene product and preparation method and application thereof Download PDFInfo
- Publication number
- CN115746344A CN115746344A CN202211493734.9A CN202211493734A CN115746344A CN 115746344 A CN115746344 A CN 115746344A CN 202211493734 A CN202211493734 A CN 202211493734A CN 115746344 A CN115746344 A CN 115746344A
- Authority
- CN
- China
- Prior art keywords
- molecular weight
- parts
- ultra
- polyethylene
- high molecular
- 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 the field of ultra-high molecular weight polyethylene, and discloses an ultra-high molecular weight polyethylene product and a preparation method and application thereof. Mixing 100 parts by weight of ultrahigh molecular weight polyethylene and 10-40 parts by weight of functional master batch to obtain a mixture, and performing hot press molding under vibration to obtain an ultrahigh molecular weight polyethylene product; the functional master batch contains 100 weight parts of polyethylene, 0.3-5 weight parts of cross-linking agent and 2-30 weight parts of cross-linking auxiliary agent; the hot press molding conditions include: the temperature is 200-230 deg.C, pressure is 30-300bar, and molding time is 15-35min. The functional master batch contains polyethylene, a cross-linking agent and a cross-linking auxiliary agent in specific parts. The method mixes the functional master batch with a specific content and the ultra-high molecular weight polyethylene, and combines oscillation during hot-press molding, so that the prepared ultra-high molecular weight polyethylene product has good moldability, wear resistance, light transmittance and low swelling degree.
Description
Technical Field
The invention relates to the field of ultra-high molecular weight polyethylene, in particular to an ultra-high molecular weight polyethylene product and a preparation method and application thereof.
Background
The ultra-high molecular weight polyethylene is polyethylene with molecular weight higher than 100 ten thousand, has excellent impact resistance, chemical corrosion resistance and self-lubricating property, and has wear resistance several times to dozens of times of common polyethylene. Meanwhile, the molecular chain has high entanglement degree, is in a viscoelastic state after being melted, has viscosity as high as 108 Pa.S, has extremely low melt fluidity, has a melt index of 0 at 190 ℃ under the load of 21.6kg, namely in a high-temperature melting state, has extremely high melt strength due to the entanglement of the molecular chain, has almost no fluidity in the melting state, and is difficult to melt and process.
CN108774349A an easily melt processable ultra high molecular weight polyethylene composite was made by introducing low molecular weight polyethylene. However, the introduction of low molecular weight polyethylene tends to result in a decrease in the wear resistance of ultra-high molecular weight polyethylene, and as the content of low molecular weight polyethylene increases, the processability increases and the wear resistance decreases.
CN104884530a is prepared by melt mixing an entangled ultra high molecular weight polyethylene and a disentangled ultra high molecular weight polyethylene in the presence of a solvent. The processing technology of the mixed form of the two ultra-high molecular weight polyethylenes is complex and is not easy to implement.
CN114773713A discloses an ultra-wear-resistant ultra-high molecular weight polyethylene plate, which is subjected to irradiation crosslinking, compression molding processing is required firstly, and then the molded product is irradiated to crosslink, so that the process is complex, the processing time is long, the irradiation absorption dose tends to increase and decrease along with the depth, the crosslinking density changes along with the change, and the wear resistance uniformity of the material is poor.
CN113980160A thermally crosslinked ultra high molecular weight polyethylene was prepared by grafting bicyclo [4.2.0] octa-1,3,5-triene groups onto the ultra high molecular weight polyethylene values. The method needs to introduce reactive groups through plasma treatment and then prepare the plate through hot press molding, and has the disadvantages of complex processing technology, high cost and difficult realization of continuous mass production.
Disclosure of Invention
The invention aims to overcome the problem that the wear resistance and the formability of the ultra-high molecular weight polyethylene in the prior art are poor, and provides an ultra-high molecular weight polyethylene product and a preparation method and application thereof. The functional master batch contains polyethylene, a cross-linking agent and a cross-linking auxiliary agent in specific parts, and the method mixes the functional master batch with the ultra-high molecular weight polyethylene in specific content and carries out hot press molding under vibration, so that the prepared ultra-high molecular weight polyethylene product has high wear resistance, improved moldability, high light transmittance and low swelling degree.
In order to achieve the above object, a first aspect of the present invention provides a process for producing an ultra-high molecular weight polyethylene article, characterized in that the process comprises: mixing 100 parts by weight of ultrahigh molecular weight polyethylene and 10-40 parts by weight of functional master batch to obtain a mixture, and performing hot press molding under vibration to obtain an ultrahigh molecular weight polyethylene product;
wherein the functional master batch contains 100 weight parts of polyethylene, 0.3-5 weight parts of cross-linking agent and 2-30 weight parts of cross-linking auxiliary agent;
the hot press molding conditions include: the temperature is 200-230 deg.C, pressure is 30-300bar, and molding time is 15-35min.
In a second aspect, the invention provides an ultra-high molecular weight polyethylene article prepared by the method of the first aspect;
preferably, the Taber abrasion of the product is less than or equal to 16mg/3000r, the swelling degree is less than or equal to 2.6, and the light transmittance is more than or equal to 45%.
In a third aspect, the present invention provides a use of the process of the first aspect for the preparation of a polyethylene article.
By the technical scheme, the ultra-high molecular weight polyethylene product and the preparation method and application thereof provided by the invention have the following beneficial effects:
the method mixes the functional master batch with the ultrahigh molecular weight polyethylene in a specific content and then carries out hot press molding under the condition of oscillation, so that the prepared ultrahigh molecular weight polyethylene product has good wear resistance and moldability. Meanwhile, the functional master batch contains polyethylene, a cross-linking agent and a cross-linking auxiliary agent with specific contents, so that the prepared product has lower swelling degree, and the light transmittance of the product is improved.
Detailed Description
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual points, and between the individual points may be combined with each other to give one or more new ranges of values, and these ranges of values should be considered as specifically disclosed herein.
The present invention provides, in a first aspect, a process for preparing an ultra-high molecular weight polyethylene article, characterized in that the process comprises: mixing 100 parts by weight of ultrahigh molecular weight polyethylene and 10-40 parts by weight of functional master batch to obtain a mixture, and performing hot press molding under vibration to obtain an ultrahigh molecular weight polyethylene product;
wherein the functional master batch contains 100 weight parts of polyethylene, 0.3-5 weight parts of cross-linking agent and 2-30 weight parts of cross-linking auxiliary agent;
the hot press molding conditions include: the temperature is 200-230 deg.C, pressure is 30-300bar, and molding time is 15-35min.
According to the invention, the method mixes the ultrahigh molecular weight polyethylene with a specific content and the functional master batch with a specific content and combines a vibration hot pressing mode, so that the wear resistance and the formability of the product prepared from the composition can be improved.
Further, the inventor researches and discovers that when the functional master batch contains specific content of polyethylene and specific content of cross-linking agent and cross-linking auxiliary agent, the wear resistance and the formability of the ultra-high molecular weight polyethylene product can be ensured, and meanwhile, the light transmittance is improved and the swelling degree is reduced. The method has low cost and can realize industrial continuous mass production.
According to the invention, the ultra-high molecular weight polyethylene accounts for 100 parts by weight, and the functional master batch accounts for 10-20 parts by weight.
According to the invention, the functional master batch contains 100 parts by weight of polyethylene, 0.32-4 parts by weight of cross-linking agent and 15-25 parts by weight of cross-linking auxiliary agent.
According to the present invention, the viscosity average molecular weight of the ultra-high molecular weight polyethylene is 100 to 900 ten thousand, preferably 300 to 800 ten thousand, more preferably 400 to 800 ten thousand.
In the invention, the viscosity-average molecular weight of the ultra-high molecular weight polyethylene is selected in a wide range, and the inventor finds that the composition type and content defined by the invention can ensure that the ultra-high molecular weight polyethylene product has better formability and higher wear resistance when the viscosity-average molecular weight of the ultra-high molecular weight polyethylene is in a higher range (400-800 ten thousand).
In the present invention, the density of the ultra-high molecular weight polyethylene is selected widely, and can be the density of the ultra-high molecular weight polyethylene in the art, for example, 0.92-0.97g/cm 3 。
According to the invention, the polyethylene has a density of 0.92 to 0.97g/cm 3 。
According to the invention, the polyethylene has a melt index of 2 to 50g/10min at 190 ℃ and under a load of 2.16 kg.
In the present invention, the polyethylene has a melt index satisfying the above range, and can improve moldability.
According to the invention, the polyethylene has a melt index of 4 to 20g/10min at 190 ℃ and under a load of 2.16 kg.
In the present invention, the weight average molecular weight of the polyethylene is 1 to 12 ten thousand.
According to the invention, the crosslinking agent is chosen from peroxide crosslinking agents.
In the invention, the cross-linking agent is selected from peroxide cross-linking agents, and can be synchronously cross-linked when the ultra-high molecular weight polyethylene composition is processed and formed into an ultra-high molecular weight polyethylene product without additional operations such as irradiation and the like.
In the present invention, specific types of the peroxide crosslinking agent are not particularly limited, and examples thereof include 1,1-bis (t-butylperoxy) -3,3,5-trimethylcyclohexane, 2,7-dimethyl-2,7-bis (t-butylperoxy) -3,5-octadiyne, 2,7-dimethyl-2,7-bis (ethylene carbonate) -3,5-octadiyne, 3,6-dimethyl-3,6-bis (ethylene carbonate) -4-octadiyne, 3,6-dimethyl-3,6-bis (t-butylperoxy) -4-octadiyne, 2,5-dimethyl-2,5-bis (t-butylperoxy) hexane, 2,5-dimethyl-2,5-di (peroxybenzoate) -3-hexyne, 2,5-dimethyl-2,5-di (n-propyl peroxycarbonate) -3-hexyne, 2,5-dimethyl-2,5-di (isobutyl peroxycarbonate) -3-hexyne, 2,5-dimethyl-2,5-di (ethyl peroxycarbonate) -3-hexyne, 2,5-dimethyl-2,5-di (alpha-cumylperoxy) -3-hexyne, 2,5-dimethyl-2,5-di (peroxybeta-chloroethyl carbonate) -3-hexyne, 2,5-dimethyl-2,5-zxft 6258-di (t-butylperoxy) -3-hexyne, 6258 zxft-butyl-6258-di (tert-butylperoxy) peroxyvalerate, at least one of bis (2,4-dichlorobenzoyl) peroxide, bis (4-methylbenzoyl) peroxide, bis (tert-butylperoxyisopropyl) benzene, dibenzoyl peroxide, dicumyl peroxide, bis (tert-butylperoxyisopropyl) benzene, dicumyl peroxide, di-tert-butyl peroxide, tert-butyl cumyl peroxide, tert-butyl peroxy-3,5,5-trimethylhexanoate, tert-butyl peroxy benzoate and tert-butyl peroxy 2-ethylhexyl carbonate.
According to the present invention, the crosslinking coagent is selected from at least one selected from the group consisting of triallyl isocyanurate, trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, diallyl terephthalate, divinylbenzene and triallyl cyanurate.
According to the invention, the conditions of the oscillation include: the oscillation frequency is 0.5-3Hz, and the oscillation angle is 0.5-5 degrees.
In the present invention, the inventors have found that the moldability of an ultra-high molecular weight polyethylene product can be further improved while ensuring high abrasion resistance and low swelling degree by performing the molding under the shaking conditions within the above-mentioned range.
Furthermore, the oscillation frequency is 0.5-1.5Hz, and the oscillation angle is 1-3 degrees.
According to the present invention, the conditions of the hot press forming include: the temperature is 200-210 deg.C, pressure is 50-200bar, and molding time is 20-30min.
According to some preferred embodiments of the present invention, the first mixing is dry mixing or melt extrusion mixing.
In the present invention, the dry blending conditions include: the temperature is 20-50 ℃, the rotating speed is 300-900r/min, and the time is 2-6min.
In the present invention, the melt extrusion mixing may be carried out in a single/twin screw extruder at a temperature of 130-145 ℃.
In the present invention, the conditions of the second mixing and the first mixing are the same, and are not described herein again.
In a second aspect, the present invention provides an ultra high molecular weight polyethylene article made by the process of the first aspect of the invention.
In the invention, taber abrasion of the product is less than or equal to 16mg/3000r, swelling degree is less than or equal to 2.6, and light transmittance is more than or equal to 45%.
Furthermore, the Taber abrasion of the ultra-high molecular weight polyethylene product is less than or equal to 7mg/3000r, the swelling degree is 1.6-1.82, and the light transmittance is 50-60%.
The inventor finds that the ultra-high molecular weight polyethylene product prepared by the ultra-high molecular weight polyethylene composition and the preparation method provided by the invention has high wear resistance, low swelling degree and excellent transparency and formability.
In the invention, the ultra-high molecular weight polyethylene product with better formability has the characteristics of uniformity, continuity and no dry powder.
In a third aspect, the present invention provides a use of the process of the first aspect of the invention for the preparation of a polyethylene article.
The present invention will be described in detail below by way of examples.
In the following examples, taber abrasion was measured by the U.S. TABER 5135ABRASER abrasion tester at 60r/min;
the product is molded by a compression molding machine, the German COLLIN company adopts the P300PM model, is provided with a mold driven by a stepping motor, and vibrates in a reciprocating way according to sine waves under the strain of 0-30Hz and 0.1-90 degrees of angle;
the ultrahigh molecular weight polyethylene product with good formability has the characteristics of uniformity, continuity and no dry powder, wherein the good formability refers to the product without dry powder coverage on the product, the dry powder coverage is less than 5% of the area of the product, the poor formability refers to the coverage on the product which is 5-20% of the area of the product, and the poor formability refers to the coverage on the product with dry powder which is more than 20% of the area of the product.
And (3) testing the swelling degree: cutting a sample with the side length not less than 3mm, and recording the measurement volume as V 0 Placing the sample in xylene, heating to above 150 deg.C, taking out the sample every 10min, measuring the size until the size of the sample does not change, and measuring the final size V t . Degree of swelling q = V t /V 0 。
The light transmittance was measured by a WGT-S light transmittance haze tester.
Unless otherwise specified, the raw materials used in the following preparation examples and examples are all commercially available;
polyethylene, shenhua (Beijing) New Material science and technology Co., ltd, with a density of 0.945g/cm 3 The melt index at 190 ℃ under the condition of a load of 2.16kg is 5g/10min, and the weight average molecular weight is 9 ten thousand;
polyethylene, shenhua Baotou coal chemical industry, limited liability company, density 0.953g/cm 3 The melt index at 190 ℃ under a load of 2.16kg is 10g/10min, and the weight average molecular weight is 7.4 ten thousand;
a crosslinking agent: 2,5-dimethyl-2,5-di (t-butylperoxy) hexane (bis di-penta), CAS 78-63-7; dicumyl peroxide (DCP), CAS 80-43-3;
crosslinking assistant agent: triallyl isocyanurate (TAIC), CAS 1025-15-6, trimethylolpropane triacrylate, CAS 15625-89-5.
In the following preparation examples, the amounts of the components are in parts by mass for illustrating the preparation of the functional masterbatch.
Preparation examples 1 to 4
Polyethylene (PE), a cross-linking agent and a cross-linking auxiliary agent are respectively placed in a mixer according to the mixture ratio shown in Table 1, the rotation speed is 300r/min, and the mixture is mixed for 3min at the temperature of 25 ℃ to obtain the functional master batches A1-A4.
TABLE 1
Comparative preparation examples 1 to 4
Polyethylene (PE), a cross-linking agent and a cross-linking auxiliary agent are respectively placed in a mixer according to the mixture ratio shown in Table 2, the rotation speed is 300r/min, and the mixture is mixed for 3min at the temperature of 25 ℃ to obtain the functional master batch.
TABLE 2
The following examples are presented to illustrate the preparation of ultra high molecular weight polyethylene articles
Examples 1 to 4
Taking 20 parts of functional master batch A1-A4 and 100 parts of ultra-high molecular weight polyethylene (the viscosity average molecular weight is 450 ten thousand, and the density is 0.935g/cm 3 ) Mixing at 25 deg.C for 3min at 300r/min, placing 45g of the mixture in a mold of 50 × 50 × 3mm, and hot pressing at 200 deg.C, 100bar, oscillation frequency of 1Hz, and oscillation angle of 1 deg.C for 30min to obtain the final product.
Taber abrasion, swelling degree, moldability and light transmittance of the ultra-high molecular weight polyethylene article are shown in Table 3.
Example 5
The procedure of example 1 was followed except that the oscillation frequency was 1.5Hz and the oscillation angle was 5 °. And obtaining the ultra-high molecular weight polyethylene product.
Taber abrasion, swelling degree, moldability and light transmittance of the ultra-high molecular weight polyethylene article are shown in Table 3.
Example 6
The procedure of example 1 was followed except that 20 parts of the functional masterbatch A1 in preparation example 1 were replaced with 40 parts. Obtaining the ultra-high molecular weight polyethylene product.
Taber abrasion, swelling degree, moldability and light transmittance of the ultra-high molecular weight polyethylene article are shown in Table 3.
Comparative examples 1 to 4
The procedure of example 1 was followed except that the functional masterbatch 1 was replaced with the functional masterbatches D1 to D4 in comparative preparation examples 1 to 4. Obtaining the ultra-high molecular weight polyethylene product.
Taber abrasion, swelling degree, moldability and light transmittance of the ultra-high molecular weight polyethylene article are shown in Table 3.
Comparative example 5
The procedure of example 1 was followed except that 20 parts of the functional masterbatch A1 was replaced with 9 parts. Obtaining the ultra-high molecular weight polyethylene product.
Taber abrasion, swelling degree, moldability and light transmittance of the ultra-high molecular weight polyethylene article are shown in Table 3.
Comparative example 6
The procedure of example 1 was followed except that 20 parts of the functional masterbatch A1 was replaced with 50 parts. And obtaining the ultra-high molecular weight polyethylene product.
Taber abrasion, swelling degree, moldability and light transmittance of the ultra-high molecular weight polyethylene article are shown in Table 3.
Comparative example 7
The procedure of example 1 was followed except that the functional masterbatch A1 was not contained. Obtaining the ultra-high molecular weight polyethylene product.
Taber abrasion, swelling degree, moldability and light transmittance of the ultra-high molecular weight polyethylene article are shown in Table 3.
Comparative example 8
And (2) performing compression molding on the same amount of the ultrahigh molecular weight polyethylene prepared in the embodiment 1 at the temperature of 200 ℃ and the pressure of 100bar, and performing irradiation crosslinking by using gamma ray radiation and the radiation dose of 110kGy to obtain an ultrahigh molecular weight polyethylene product. Taber abrasion, swelling, moldability and light transmittance of the article are shown in Table 3.
Comparative example 9
The process of example 1 was followed except that the hot pressing conditions were: and hot pressing at 150 ℃ and 100bar for 30min for molding, and finding that the ultrahigh molecular weight polyethylene product cannot be successfully prepared.
Comparative example 10
Following the procedure of example 1, except that no shaking was performed during hot pressing, an ultra high molecular weight polyethylene product was obtained. Taber abrasion, swelling, moldability and light transmittance of the article are shown in Table 3.
Comparative example 11
Following the procedure of example 1, except that the polyethylene in the functional masterbatch was replaced with the same amount of ultra-high molecular weight polyethylene, it was found that the ultra-high molecular weight polyethylene product could not be successfully prepared.
Unless otherwise stated, all of the properties of the ultra-high molecular weight polyethylene product with a thickness of 3mm are shown in Table 3.
TABLE 3
| Taber abrasion (mg/3000 r) | Degree of swelling | Formability | Light transmittance (%) | |
| Example 1 | 6.2 | 1.79 | Superior food | 57.2 |
| Example 2 | 7.1 | 1.87 | Superior food | 56.6 |
| Example 3 | 6.1 | 1.67 | In | 56.7 |
| Example 4 | 6 | 1.66 | In | 58.1 |
| Example 5 | 6.5 | 1.8 | In | 55.3 |
| Example 6 | 16 | 2.6 | Superior food | 45.8 |
| Comparative example 1 | 16.3 | - | Difference (D) | 33.1 |
| Comparative example 2 | 14.5 | 2.8 | Difference (D) | 46 |
| Comparative example 3 | 15.8 | - | Is poor | 34.8 |
| Comparative example 4 | 16.6 | - | Youyou (an instant noodle) | 32.1 |
| Comparative example 5 | 15.2 | 2.8 | Is poor | 40.3 |
| Comparative example 6 | 27.2 | - | Superior food | 33.6 |
| Comparative example 7 | 18 | - | Is poor | 32.7 |
| Comparative example 8 | 10.8 | 2.9 | Is poor | 43.3 |
| Comparative example 9 | - | - | Difference (D) | - |
| Comparative example 10 | 6.3 | 1.8 | Difference (D) | 56.9 |
| Comparative example 11 | - | - | Difference (D) | - |
As can be seen from the contents in Table 3, the polyethylene products prepared by the technical schemes provided by the invention in examples 1-6 have better performance, specifically, taber abrasion is not less than 16mg/3000r, swelling degree is not more than 2.6, and light transmittance is not less than 45%. And the thickness of the product is further reduced, and the light transmittance is further improved.
Examples satisfying the preferred range of the present invention have more excellent properties in which taber abrasion is not less than 7mg/3000r, swelling degree is not more than 1.9, and light transmittance is not less than 56%.
Among them, in comparative examples 1,3, 4 and 7, some of the materials were dissolved in xylene, and the degree of swelling could not be calculated. In comparative example 6, the content of the functional masterbatch was too large, which resulted in a large proportion of polyethylene, which was soluble in xylene, and the degree of swelling could not be calculated. Comparative examples 9 and 11 failed to test taber abrasion, swelling degree and light transmittance data because the ultra-high molecular weight polyethylene article could not be successfully prepared, and comparative example 10 was poor in molding and failed to be normally used although taber abrasion and swelling degree of the article were low and transparency was high.
Claims (10)
1. A process for preparing an ultra-high molecular weight polyethylene article, the process comprising: mixing 100 parts by weight of ultrahigh molecular weight polyethylene and 10-40 parts by weight of functional master batch to obtain a mixture, and performing hot press molding under vibration to obtain an ultrahigh molecular weight polyethylene product;
wherein the functional master batch contains 100 weight parts of polyethylene, 0.3-5 weight parts of cross-linking agent and 2-30 weight parts of cross-linking auxiliary agent;
the hot press molding conditions include: the temperature is 200-230 deg.C, pressure is 30-300bar, and molding time is 15-35min.
2. The method of claim 1, wherein the ultra-high molecular weight polyethylene is 100 parts by weight and the functional masterbatch is 10-20 parts by weight.
3. The method according to claim 1 or 2, wherein the functional masterbatch comprises 100 parts by weight of polyethylene, 0.32 to 4 parts by weight of a crosslinking agent, and 15 to 25 parts by weight of a crosslinking co-agent.
4. A process according to any one of claims 1 to 3, wherein the ultra high molecular weight polyethylene has a viscosity average molecular weight in the range 100 to 900 ten thousand, preferably 300 to 800 ten thousand, more preferably 400 to 800 ten thousand.
5. The process of any of claims 1-4, wherein the polyethylene has a density of 0.92 to 0.97g/cm 3 ；
Preferably, the polyethylene has a melt index of 2 to 50g/10min, preferably 4 to 20g/10min at 190 ℃ and a load of 2.16 kg.
6. The method of any of claims 1-5, wherein the crosslinking agent is selected from a peroxide crosslinking agent;
preferably, the crosslinking coagent is selected from at least one of triallyl isocyanurate, trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, diallyl terephthalate, divinylbenzene and triallyl cyanurate.
7. The method of any one of claims 1-6, wherein the conditions of the oscillation comprise: the oscillation frequency is 0.5-3Hz, and the oscillation angle is 0.5-5 degrees;
preferably, the oscillation frequency is 0.5-1.5Hz, and the oscillation angle is 1-3 degrees.
8. The method according to any one of claims 1 to 7, wherein the conditions of the hot press forming include: the temperature is 200-210 deg.C, pressure is 50-200bar, and molding time is 20-30min.
9. An ultra high molecular weight polyethylene article prepared by the process of any one of claims 1 to 8;
preferably, the Taber abrasion of the product is less than or equal to 16mg/3000r, the swelling degree is less than or equal to 2.6, and the light transmittance is more than or equal to 45%.
10. Use of the process of any one of claims 1 to 8 for the preparation of a polyethylene article.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211493734.9A CN115746344A (en) | 2022-11-25 | 2022-11-25 | Ultra-high molecular weight polyethylene product and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211493734.9A CN115746344A (en) | 2022-11-25 | 2022-11-25 | Ultra-high molecular weight polyethylene product and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115746344A true CN115746344A (en) | 2023-03-07 |
Family
ID=85338342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211493734.9A Pending CN115746344A (en) | 2022-11-25 | 2022-11-25 | Ultra-high molecular weight polyethylene product and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115746344A (en) |
-
2022
- 2022-11-25 CN CN202211493734.9A patent/CN115746344A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8921466B2 (en) | Concurrent solid and melt state grafting of coagents for making long chain branched polypropylene via direct reactive extrusion process | |
| CN102030960B (en) | Preparation method of high-melt-strength polyolefine comprising hybrid long branch-chain structure | |
| CN108178874B (en) | Polypropylene insulating material for high-voltage power cable and preparation method thereof | |
| CN110256768B (en) | Light high-toughness conductive polypropylene composite material and preparation method and application thereof | |
| CN110041466B (en) | High-melt-strength polylactic acid material and preparation method thereof | |
| JP2004511604A (en) | Polypropylene material having high melt flow rate and excellent moldability and production method | |
| CN115322479A (en) | Low-after-shrinkage polypropylene material and preparation method thereof | |
| CN111333954A (en) | Illumination aging resistant plastic for automotive interior parts and processing technology thereof | |
| CN109627539B (en) | Polyethylene composition having excellent crack resistance and method for preparing the same | |
| CN113980300A (en) | Polypropylene with low gel content and high melt strength, preparation method and application thereof | |
| CN115746344A (en) | Ultra-high molecular weight polyethylene product and preparation method and application thereof | |
| KR101802989B1 (en) | A method of preparing a functionalizable polyethylene wax | |
| CN111073123B (en) | Polyethylene master batch, preparation method thereof and polyethylene composition | |
| CN111607187A (en) | Modified ABS material and preparation method thereof | |
| CN101696254B (en) | Method for improving melt strength of polypropylene by using fullerene | |
| CN104231445A (en) | High-melt-strength polypropylene composition and preparation method thereof | |
| CN111892763A (en) | Radiation crosslinking ethylene-tetrafluoroethylene copolymer foam material and preparation method thereof | |
| CN110698761A (en) | High-flow ultrahigh-impact polypropylene composition and preparation method thereof | |
| KR101901877B1 (en) | A method of preparing a functionalizable polyethylene wax | |
| JPH04198201A (en) | Molding of ultrahigh-molecular-weight polyethylene | |
| CN112094447B (en) | PTFE (polytetrafluoroethylene) filled UHMWPE (ultrahigh molecular weight polyethylene) based antistatic plate | |
| CN111154161B (en) | Composition for 3D printing, 3D printed product and preparation method thereof | |
| CN113896835B (en) | High melt strength polypropylene and preparation method and application thereof | |
| CN114163763B (en) | Polyethylene compound capable of thermoplastic processing | |
| CN104974419A (en) | Foamed polypropylene pre-mixed material 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 |