CN105885155A - Ultrahigh molecular weight polyethylene composite material with high wear resistance and high temperature resistance as well as preparation method thereof - Google Patents
Ultrahigh molecular weight polyethylene composite material with high wear resistance and high temperature resistance as well as preparation method thereof Download PDFInfo
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- CN105885155A CN105885155A CN201410557292.9A CN201410557292A CN105885155A CN 105885155 A CN105885155 A CN 105885155A CN 201410557292 A CN201410557292 A CN 201410557292A CN 105885155 A CN105885155 A CN 105885155A
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Abstract
The invention relates to an ultrahigh molecular weight polyethylene composite material with high wear resistance and high temperature resistance as well as a preparation method thereof. The method comprises the following steps: ultrahigh molecular weight polyethylene, a modifier, ultrafine calcium carbonate powder and a fire retardant are mixed in proportion; a mixture is placed in a mould, under a pressure, cold pressing is carried out for 5-10 minutes, and air is discharged; heating and pressurization are carried out; in a condition that the pressure is maintained, the temperature is cooled to 40 DEG C or below, and demoulding is carried out in order to obtained the composite material. The composite material has the advantages of excellent performance, low price, and good cost performance.
Description
Technical field
The present invention relates to a kind of superhigh molecular weight polyethylene high abrasion-proof and high temperature resistant compound material and preparation method, belong to
Technical field of polymer composite materials.
Background technology
Common ultra-high molecular weight polyethylene refers generally to the matrix viscosity-average molecular weight polyethylene more than 1,500,000, and it has
Excellent shock resistance and wearability, coefficient of friction is the lowest, has good self lubricity, and has excellent
Good stress crack resistance performance, to chemicals stability, extremely low water absorption rate, electrical insulating property, biologically inert etc..
Anti-wear performance based on ultra-high molecular weight polyethylene and shock resistance, be used for manufacturing valve for chemical industry, pump, sealing
The machine components such as the worm gear pole of circle, gear, leather block and transporter, bearing, bearing shell are to replace part steel, super
High molecular weight polyethylene is also applied to the enterprises such as bunder industrial and mineral.Although ultra-high molecular weight polyethylene has many
Excellent physical property, but also weak point: its fire resistance is poor, it is impossible in the environment that temperature is higher
Using, secondly, its anti-wear performance need to improve.
Summary of the invention
It is an object of the invention to provide a kind of superhigh molecular weight polyethylene high abrasion-proof and high temperature resistant compound material and preparation
Method, good to obtain anti-wear performance and self-lubricating property, High molecular weight polyethylene high abrasion that shock resistance is high
High temperature resistant composite.
The modified ultra-high molecular weight polyethylene high abrasion-proof and high temperature resistant compound material that the present invention proposes, the weight of each component
Percentage ratio is: ultra-high molecular weight polyethylene 75%～85%, modifying agent 5%～10%, calcium carbonate superfine powder powder 5
%～10% and fire retardant 5%～10%.
The preparation process of the present invention comprises the steps:
1, dispensing, batch mixing is uniform: in homogenizer, is sequentially added into ultra-high molecular weight polyethylene, ultra-fine
Paris white, modifying agent and fire retardant are at a high speed to uniformly, and compound is put into mould.
2, cold pressing, aerofluxus: under the pressure of 8-10MPa, mould is colded pressing 5-10 minute and then gets rid of
Air.
3, hot pressing: be 20MPa at pressure, under conditions of temperature is 170 DEG C-200 DEG C, suppresses 80-100
Minute.
4, pressurize cooling, molding: keep the condition of pressure 15-18MPa, be cooled to room temperature, the demoulding and get final product
The composite of the present invention.
Described ultra-high molecular weight polyethylene is matrix viscosity-average molecular weight superhigh molecular weight polyethylene more than 4,000,000
Alkene.
Described modifying agent, is one or more the mixture in graphite, calcium stearate.
The present invention uses molding sintering, cooling and shaping method molding, and heatproof, up to more than 200 DEG C, has high
Anti-wear performance, excellent self-lubricating property, shock resistance is high, and water absorption rate is low, chemical resistance, environment
Strong adaptability, under the conditions of stronger external force, its rigidity and case hardness are all good, have the strongest ageing resistance
Can, performance exceedes common ultra-high molecular weight polyethylene comprehensively, and the length of service reaches as high as more than 50 years, is super
High molecular weight polyethylene and the regeneration product of nylon66 fiber.
The present invention thoroughly solve the field run coal bins such as electric power, coking, cement, mine, chemical industry, tower silo,
Storehouse wall, hopper, coal bunker, train Xie Meigou, Rotary Dumper Room, inner liner of bowl mill, clay storehouse wall and cone etc.
The blocking at position, the phenomenon such as cohere, safe and reliable.
Detailed description of the invention
Embodiment 1
First by ultra-high molecular weight polyethylene 75 parts, modifying agent 5 parts, 10 parts of calcium carbonate superfine powder powder, fire retardant
10 parts, put into homogenizer mixed at high speed to uniformly, and compound is put into mould.Then, exist
Carry out under the pressure of 8-10MPa within 5-10 minute, colding pressing to get rid of air to mould, after drained air,
Pressure is to carry out hot pressing under conditions of 20MPa temperature is 170 DEG C-200 DEG C, suppresses holding in 80-100 minute
It is cooled to the room temperature demoulding under conditions of 15-18MPa and i.e. can get the composite of the present invention.
Embodiment 2
First by ultra-high molecular weight polyethylene 75 parts, modifying agent 10 parts, 5 parts of calcium carbonate superfine powder powder, fire retardant
10 parts, put into homogenizer mixed at high speed to uniformly, and compound is put into mould.Then, exist
Carry out under the pressure of 8-10MPa within 5-10 minute, colding pressing to get rid of air to mould, after drained air,
Pressure is to carry out hot pressing under conditions of 20MPa temperature is 170 DEG C-200 DEG C, suppresses holding in 80-100 minute
It is cooled to the room temperature demoulding under conditions of 15-18MPa and i.e. can get the composite of the present invention.
Embodiment 3
First by ultra-high molecular weight polyethylene 75 parts, modifying agent 10 parts, 10 parts of calcium carbonate superfine powder powder, fire-retardant
Agent 5 parts, puts into homogenizer mixed at high speed to uniformly, and compound is put into mould.Then, exist
Carry out under the pressure of 8-10MPa within 5-10 minute, colding pressing to get rid of air to mould, after drained air,
Pressure is to carry out hot pressing under conditions of 20MPa temperature is 170 DEG C-200 DEG C, suppresses holding in 80-100 minute
It is cooled to the room temperature demoulding under conditions of 15-18MPa and i.e. can get the composite of the present invention.
Embodiment 4
First by ultra-high molecular weight polyethylene 80 parts, modifying agent 5 parts, 5 parts of calcium carbonate superfine powder powder, fire retardant
10 parts, put into homogenizer mixed at high speed to uniformly, and compound is put into mould.Then, exist
Carry out under the pressure of 8-10MPa within 5-10 minute, colding pressing to get rid of air to mould, after drained air,
Pressure is to carry out hot pressing under conditions of 20MPa temperature is 170 DEG C-200 DEG C, suppresses holding in 80-100 minute
It is cooled to the room temperature demoulding under conditions of 15-18MPa and i.e. can get the composite of the present invention.
Embodiment 5
First by ultra-high molecular weight polyethylene 80 parts, modifying agent 10 parts, 5 parts of calcium carbonate superfine powder powder, fire retardant
5 parts, put into homogenizer mixed at high speed to uniformly, and compound is put into mould.Then, at 8-10MPa
Pressure under carry out within 5-10 minute, colding pressing to get rid of air to mould, after drained air, at pressure be
20MPa temperature carries out hot pressing under conditions of being 170 DEG C-200 DEG C, suppress holding in 80-100 minute
It is cooled to the room temperature demoulding under conditions of 15-18MPa and i.e. can get the composite of the present invention.
Embodiment 6
First by ultra-high molecular weight polyethylene 80 parts, modifying agent 5 parts, 10 parts of calcium carbonate superfine powder powder, fire retardant
5 parts, put into homogenizer mixed at high speed to uniformly, and compound is put into mould.Then, at 8-10MPa
Pressure under carry out within 5-10 minute, colding pressing to get rid of air to mould, after drained air, at pressure be
20MPa temperature carries out hot pressing under conditions of being 170 DEG C-200 DEG C, suppress holding in 80-100 minute
It is cooled to the room temperature demoulding under conditions of 15-18MPa and i.e. can get the composite of the present invention.
Embodiment 7
First by ultra-high molecular weight polyethylene 85 parts, modifying agent 5 parts, 5 parts of calcium carbonate superfine powder powder, fire retardant
5 parts, put into homogenizer mixed at high speed to uniformly, and compound is put into mould.Then, at 8-10MPa
Pressure under carry out within 5-10 minute, colding pressing to get rid of air to mould, after drained air, at pressure be
20MPa temperature carries out hot pressing under conditions of being 170 DEG C-200 DEG C, suppress holding in 80-100 minute
It is cooled to the room temperature demoulding under conditions of 15-18MPa and i.e. can get the composite of the present invention.
Claims (4)
1. a superhigh molecular weight polyethylene high abrasion-proof and high temperature resistant compound material, it is characterised in that this material is each
The percentage by weight of component is: ultra-high molecular weight polyethylene 75%～85%, modifying agent 5%～10%, ultra-fine
Paris white 5%～10% and fire retardant 5%～10%.
2. the preparation side of superhigh molecular weight polyethylene high abrasion-proof and high temperature resistant compound material as claimed in claim 1
Method comprises the following steps:
(1) dispensing, mix homogeneously: be separately added in homogenizer ultra-high molecular weight polyethylene, modifying agent,
Calcium carbonate superfine powder powder and fire retardant, high-speed stirred is to uniformly, and compound is put into mould；
(2) cold pressing, aerofluxus: under the pressure of 8-10MPa, mould is colded pressing 5-10 minute rush down pressure 30 seconds
To get rid of air；
(3) hot pressing: under conditions of pressure is 20MPa, suppresses 80-100 minute；
(4) pressurize cooling, molding: under conditions of pressure is maintained at 15-18MPa, be cooled to less than 40 DEG C,
The demoulding the composite of the present invention.
3. superhigh molecular weight polyethylene high abrasion-proof and high temperature resistant compound material as claimed in claim 1, its feature
Being, ultra-high molecular weight polyethylene is matrix viscosity-average molecular weight ultra-high molecular weight polyethylene more than 4,000,000.
4. superhigh molecular weight polyethylene high abrasion-proof and high temperature resistant compound material as claimed in claim 1, its feature
Being, described modifying agent is one or more the mixture in graphite, calcium stearate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410557292.9A CN105885155A (en) | 2014-10-11 | 2014-10-11 | Ultrahigh molecular weight polyethylene composite material with high wear resistance and high temperature resistance as well as preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410557292.9A CN105885155A (en) | 2014-10-11 | 2014-10-11 | Ultrahigh molecular weight polyethylene composite material with high wear resistance and high temperature resistance as well as preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105885155A true CN105885155A (en) | 2016-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410557292.9A Pending CN105885155A (en) | 2014-10-11 | 2014-10-11 | Ultrahigh molecular weight polyethylene composite material with high wear resistance and high temperature resistance as well as preparation method thereof |
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| CN (1) | CN105885155A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106633296A (en) * | 2016-12-13 | 2017-05-10 | 无锡市四方达高分子材料有限公司 | Novel high-molecular material |
| CN112976444A (en) * | 2021-02-07 | 2021-06-18 | 四川大学 | High-toughness high-wear-resistance ultrahigh molecular weight polyethylene material and preparation method thereof |
-
2014
- 2014-10-11 CN CN201410557292.9A patent/CN105885155A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106633296A (en) * | 2016-12-13 | 2017-05-10 | 无锡市四方达高分子材料有限公司 | Novel high-molecular material |
| CN112976444A (en) * | 2021-02-07 | 2021-06-18 | 四川大学 | High-toughness high-wear-resistance ultrahigh molecular weight polyethylene material and preparation method thereof |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160824 |