CN103554659A - High-performance flame-retardant PP (polypropylene), and preparation method and application thereof - Google Patents
High-performance flame-retardant PP (polypropylene), and preparation method and application thereof Download PDFInfo
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- CN103554659A CN103554659A CN201310489445.6A CN201310489445A CN103554659A CN 103554659 A CN103554659 A CN 103554659A CN 201310489445 A CN201310489445 A CN 201310489445A CN 103554659 A CN103554659 A CN 103554659A
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
- C08K5/523—Esters of phosphoric acids, e.g. of H3PO4 with hydroxyaryl compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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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
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
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Abstract
The invention discloses a high-performance flame-retardant PP (polypropylene) polymer of which the formula is composed of antioxidant, flame retardant 1, flame retardant 2 and PP. Tests on the product indicate that the high-performance flame-retardant PP polymer has excellent flame retardancy; the toughness and shock resistance of the high-performance flame-retardant PP polymer is superior to those in the prior art; and the high-performance flame-retardant PP polymer disclosed by the invention also shows excellent aging resistance, and is especially suitable for application in manufacturing of military special boxes, floors, decorative boards, motor parts, lighting equipment, household appliance housing and construction parts and interiors of automobiles.
Description
Technical field
The present invention relates to technical field of polymer materials, relate in particular to PP polymer materials field, be specifically related to a kind of high-performance refractory PP matrix material and its preparation method and application.
Background technology
Polypropylene (PP) is the linear polymer of a kind of high-density, unprotected side chain, high crystallization, and with respect to common plastic material, shock resistance is higher, has the advantages such as heat-resisting, corrosion-resistant simultaneously.The common flame retardant properties of existing PP polymkeric substance is poor, and security is low, has limited its application in a lot of fields; The for example application in set lights/automobile construction, PP polymkeric substance must meet very harsh fire-protection standard, for this reason can only be by adding fire retardant to strengthen the flame retardant properties of product.But the interpolation of fire retardant tends to reduce the mechanical property of product, make prepared these products easily performance exist stress easy to crack, low to breach anti-impact force, wear no resistance, poor fluidity, the easy shortcoming such as aging, product reliability is not enough.
Summary of the invention
In view of this, one of object of the present invention is to provide the PP polymkeric substance of a kind of shock resistance, good flame retardation effect.
Another object of the present invention be to provide a kind of can large-scale promotion, improve the preparation method of above-mentioned PP polymer performance.
Another object of the present invention is to provide a kind of application of above-mentioned PP polymkeric substance.
First object of the present invention realizes in the following manner:
A PP polymkeric substance, its composition of raw materials is comprised of each component of following weight part:
Oxidation inhibitor 0.3-1.5 part;
Fireproofing agent 1 10-15 part;
Fireproofing agent 2 4-8 parts;
PP 77.5-84.9 part;
Described oxidation inhibitor is the composite antioxidant K25 that Hongjiang City Chang He Chemical Co., Ltd. produces, and described fireproofing agent 1 is FR-266, and described fireproofing agent 2 is TPP.
The composite antioxidant K25 of above-mentioned oxidation inhibitor for producing for Hongjiang City Chang He Chemical Co., Ltd., can effectively improve the heat-resisting oxidation effectiveness of PP polymkeric substance of the present invention, thermal destruction and the oxidative degradation of inhibition PP polymkeric substance, extend the work-ing life of prepared PP polymkeric substance, make it to be difficult for breaking, damaging.
Described fireproofing agent 1 is FR-266, can select any commercially available prod.Described fireproofing agent 2 is TPP, and full name is triphenylphosphate.FR-266 is a kind of reactive flame retardant, as fire retardant while being added in PP polymkeric substance, have do not separate out, the advantage such as resistance to migration.But FR-266 addition is too high, will cause the decline of PP toughness of polymers, shock resistance, make the PP polymkeric substance that finally makes not shock-resistant, easily cracked.TPP has certain flame retardant effect while being added in nitrocotton, cellulose acetate, but its flame retardant properties to PP there is no obvious improvement effect.Inventor's discovery, TPP has the effect that strengthens FR-266 flame retardant effect in PP polymkeric substance, thereby is minimized the addition of FR-266 in PP polymkeric substance, keeps the shock resistance of prepared PP polymkeric substance.In addition, contriver also finds, after the consumption of TPP, FR-266 and K25 is optimized, three's synergistic also can make the toughness of PP polymkeric substance of the present invention get a promotion.
The preparation method of above-mentioned a kind of high-performance refractory PP polymkeric substance, it specifically comprises the steps: according to above-mentioned ratio, oxidation inhibitor, fireproofing agent 1, fireproofing agent 2, PP to be packed into after being repeatedly uniformly mixed in stirrer and sent in twin screw extruder,
190-220 ℃temperature under melting mixing, gained melt is extruded by tank cooling by duplex forcing machine, introduce dicing machine and carry out pelletizing operation, gained pellet is described high-performance refractory PP polymkeric substance.
Described stirring repeatedly refers to stirs three times repeatedly, and each churning time is
30-50minute.The rotating speed of described stirrer is
650-1000rev/min.
Thereby the rotating speed that improves stirrer can make each feed composition mix and more fully obtain homogeneous product.But for some raw material, excessively slow stirring velocity is difficult to make it fully to mix, too high mixing speed easily causes the cracking of himself structure.The rotating speed of above-mentioned stirrer is the physical property of contriver's various feed composition according to the present invention and preferred, within the scope of this, can guarantee that each component of raw material can mix, and can effectively prevent raw material generation cracking again and loses efficacy.Described stirring repeatedly refers to and so just can in the situation that not increasing rotating speed, further promote the mixing of each feed composition by the mixing direction that alternately changes stirrer.Smelting temperature of the present invention is selected according to the character of all kinds of raw materials, and in this temperature range, all kinds of raw materials are all fusible is thoroughly able to abundant mixing, and Yin Wendu is too low and melting mixing is not thorough, and is difficult for because of excess Temperature cracking, rotten.Raw material only obtains abundant mixing combination, could act synergistically and obtain the high-quality performance that the present invention pursues.
The rotating speed of described duplex forcing machine is
250-600rev/min.
Described melt is extruded when cooling by tank by duplex forcing machine, and tank temperature used is
60-75℃.
Due to the different in kind of product, also each is inconsistent for its coolant water temperature.In general, the space that the water temperature in rising tank can be reduced between pellet makes it not easily broken, but too high water temperature will cause pellet bonding, affect product quality and outward appearance.Therefore in the present invention, designer designs above-mentioned tank water temperature range according to the character of the rotating speed of duplex forcing machine, melt, and moderate, the difficult bonding in product pellet of the present invention gap of producing in this temperature range, has good processing characteristics.
The rotating speed of described dicing machine is
600-900rev/min.
Designer of the present invention finds in research practice; the too high meeting of dicing machine rotating speed makes the too small easily fracture in follow-up tie rod operation of pellet volume; it can be that pellet is loose that dicing machine rotating speed is crossed when slow, affects final pellet and also can strengthen the difficulty of processing in pellet application time attractive in appearance.And the pellet of each composition all has its suitable pellet size, for the present invention,
600-900rev/min the rotating speed of dicing machine can farthest promote outward appearance and the processing characteristics of product of the present invention.
Every test to product shows, a kind of high-performance refractory PP polymkeric substance of the present invention has excellent flame retardant properties, and the toughness and the breach shock resistance that are better than prior art, and breach shock resistance can reach 48J/M; In addition high-performance refractory PP polymkeric substance of the present invention also shows excellent ageing-resistant performance, is particularly useful for the application in military special type casing, floor, decorative sheet, motor part, set lights, household appliances shell and automobile construction part and interior trim manufacture.
Compared with prior art, the present invention has following beneficial effect:
1. the present invention selects FR-266 and TPP to be added in PP polymkeric substance as fireproofing agent especially, by TPP, significantly strengthen the flame retardant effect of FR-266, thereby reduce the consumption of FR-266, solve the problem that in prior art, FR-266 consumption too much causes PP toughness of polymers and shock resistance to decline, make high-performance refractory PP polymkeric substance of the present invention have both outstanding fire-retardant and shock resistance.
2. the present invention has added oxidation inhibitor K25 in PP polymkeric substance, it not only can effectively delay the oxygenolysis of high-performance refractory PP polymkeric substance of the present invention, make product life-time service still can there is higher shock resistance effect, more can strengthen the shock resistance of high-performance refractory PP polymkeric substance of the present invention with FR-266, TPP synergistic, avoid it because of aging embrittlement, damage, effectively extend the work-ing life of obtained product.
3. the preparation method of high-performance refractory PP polymkeric substance of the present invention; be that feature according to each feed composition obtains process parameter optimizings such as stirrer rotating speed, smelting temperature, tank water temperature, dicing machine rotating speeds, guarantee that prepared PP polymer materials can realize the technique effect that the present invention pursues.
Embodiment
For the ease of it will be appreciated by those skilled in the art that below in conjunction with comparative example and embodiment, the present invention is described in further detail:
Embodiment 1
The present embodiment provides a kind of high-performance refractory PP polymkeric substance.Its composition of raw materials is comprised of each component of following weight part:
1.1 parts, oxidation inhibitor;
1 13 parts of fireproofing agents;
26 parts of fireproofing agents;
79.5 parts of PP;
Described oxidation inhibitor is the composite antioxidant K25 that Hongjiang City Chang He Chemical Co., Ltd. produces, and described fireproofing agent 1 is FR-266, and described fireproofing agent 2 is TPP.
The preparation method of above-mentioned a kind of high-performance refractory PP polymkeric substance, it specifically comprises the steps: according to above-mentioned ratio, oxidation inhibitor, fireproofing agent 1, fireproofing agent 2, PP to be packed into after being repeatedly uniformly mixed in stirrer and sent in twin screw extruder,
195 ℃temperature under melting mixing, gained melt is extruded by tank cooling by duplex forcing machine, introduce dicing machine and carry out pelletizing operation, gained pellet is described high-performance refractory PP polymkeric substance.
Described stirring repeatedly refers to stirs three times repeatedly, and each churning time is 48 minutes.The rotating speed of described stirrer is 740 revs/min.
The rotating speed of described duplex forcing machine is 309 revs/min.
Described melt is extruded when cooling by tank by duplex forcing machine, and tank temperature used is 74 ℃.
The rotating speed of described dicing machine is 620 revs/min.
Adopt ASTM international standard to carry out its result of performance test to it product of the present embodiment as shown in table 1:
The performance test results of table 1 embodiment 1
Character | Method | Unit | Data |
Proportion | ASTMD792 | — | 0.95 |
Mould shrinks | ASTMD955 | % | 1.3-1.6 |
Unit elongation | ASTMD638 | % | 75 |
Tensile strength | ASTMD638 | Mpa | 21 |
Flexural strength | ASTMD790 | Mpa | 28 |
Bending modulus | ASTMD790 | Mpa | 1200 |
Notched Izod impact strength (1/8 ") | ASTMD256 | J/M | 260 |
Heat-drawn wire | ASTMD648 | ℃ | 138 |
Flame resistivity | UL94 | (1/8") | V0 |
Drying temperature | — | ℃ | 90 |
Time of drying | — | HR | 4 |
Melt temperature | — | ℃ | 190-220 |
Suggestion mould temperature | — | ℃ | 50 |
As seen from the above table, the high-performance refractory PP polymkeric substance that the present embodiment provides has good flame retardant properties.Simultaneously, the high-performance refractory PP polymkeric substance of the present embodiment also shows outstanding shock resistance, is particularly useful for the application in military special type casing, floor, decorative sheet, motor part, set lights, household appliances shell and automobile construction part and interior trim manufacture.
Embodiment 2
The present embodiment provides a kind of high-performance refractory PP polymkeric substance.Its composition of raw materials is comprised of each component of following weight part:
0.3 part, oxidation inhibitor;
1 15 parts of fireproofing agents;
24 parts of fireproofing agents;
80.7 parts of PP;
Described oxidation inhibitor is the composite antioxidant K25 that Hongjiang City Chang He Chemical Co., Ltd. produces, and described fireproofing agent 1 is FR-266, and described fireproofing agent 2 is TPP.
The preparation method of above-mentioned a kind of high-performance refractory PP polymkeric substance, it specifically comprises the steps: according to above-mentioned ratio, oxidation inhibitor, fireproofing agent 1, fireproofing agent 2, PP to be packed into after being repeatedly uniformly mixed in stirrer and sent in twin screw extruder,
190 ℃temperature under melting mixing, gained melt is extruded by tank cooling by duplex forcing machine, introduce dicing machine and carry out pelletizing operation, gained pellet is described high-performance refractory PP polymkeric substance.
Described stirring repeatedly refers to stirs three times repeatedly, and each churning time is 50 minutes.The rotating speed of described stirrer is 650 revs/min.
The rotating speed of described duplex forcing machine is 600 revs/min.
Described melt is extruded when cooling by tank by duplex forcing machine, and tank temperature used is 60 ℃.
The rotating speed of described dicing machine is 900 revs/min.
Adopt ASTM international standard to carry out its result of performance test to it product of the present embodiment as shown in table 2:
The performance test results of table 2 embodiment 2
Character | Method | Unit | Data |
Proportion | ASTMD792 | — | 0.95 |
Mould shrinks | ASTMD955 | % | 1.3-1.6 |
Unit elongation | ASTMD638 | % | 73 |
Tensile strength | ASTMD638 | Mpa | 19 |
Flexural strength | ASTMD790 | Mpa | 22 |
Bending modulus | ASTMD790 | Mpa | 1220 |
Notched Izod impact strength (1/8 ") | ASTMD256 | J/M | 254 |
Heat-drawn wire | ASTMD648 | ℃ | 138 |
Flame resistivity | UL94 | (1/8") | V0 |
Drying temperature | — | ℃ | 90 |
Time of drying | — | HR | 4 |
Melt temperature | — | ℃ | 190-220 |
Suggestion mould temperature | — | ℃ | 50 |
As seen from the above table, the high-performance refractory PP polymkeric substance that the present embodiment provides has good flame retardant properties.Simultaneously, the high-performance refractory PP polymkeric substance of the present embodiment also shows outstanding shock resistance, is particularly useful for the application in military special type casing, floor, decorative sheet, motor part, set lights, household appliances shell and automobile construction part and interior trim manufacture.
Embodiment 3
The present embodiment provides a kind of high-performance refractory PP polymkeric substance.Its composition of raw materials is comprised of each component of following weight part:
1.5 parts, oxidation inhibitor;
1 10 parts of fireproofing agents;
28 parts of fireproofing agents;
80.5 parts of PP;
Described oxidation inhibitor is the composite antioxidant K25 that Hongjiang City Chang He Chemical Co., Ltd. produces, and described fireproofing agent 1 is FR-266, and described fireproofing agent 2 is TPP.
The preparation method of above-mentioned a kind of high-performance refractory PP polymkeric substance, it specifically comprises the steps: according to above-mentioned ratio, oxidation inhibitor, fireproofing agent 1, fireproofing agent 2, PP to be packed into after being repeatedly uniformly mixed in stirrer and sent in twin screw extruder,
220 ℃temperature under melting mixing, gained melt is extruded by tank cooling by duplex forcing machine, introduce dicing machine and carry out pelletizing operation, gained pellet is described high-performance refractory PP polymkeric substance.
Described stirring repeatedly refers to stirs three times repeatedly, and each churning time is 30 minutes.The rotating speed of described stirrer is 1000 revs/min.
The rotating speed of described duplex forcing machine is 250 revs/min.
Described melt is extruded when cooling by tank by duplex forcing machine, and tank temperature used is 75 ℃.
The rotating speed of described dicing machine is 600 revs/min.
Adopt ASTM international standard to carry out its result of performance test to it product of the present embodiment as shown in table 3:
The performance test results of table 3 embodiment 3
Character | Method | Unit | Data |
Proportion | ASTMD792 | — | 0.95 |
Mould shrinks | ASTMD955 | % | 1.3-1.6 |
Unit elongation | ASTMD638 | % | 77 |
Tensile strength | ASTMD638 | Mpa | 22 |
Flexural strength | ASTMD790 | Mpa | 23 |
Bending modulus | ASTMD790 | Mpa | 1210 |
Notched Izod impact strength (1/8 ") | ASTMD256 | J/M | 262 |
Heat-drawn wire | ASTMD648 | ℃ | 138 |
Flame resistivity | UL94 | (1/8") | V0 |
Drying temperature | — | ℃ | 90 |
Time of drying | — | HR | 4 |
Melt temperature | — | ℃ | 190-220 |
Suggestion mould temperature | — | ℃ | 50 |
As seen from the above table, the high-performance refractory PP polymkeric substance that the present embodiment provides has good flame retardant properties.Simultaneously, the high-performance refractory PP polymkeric substance of the present embodiment also shows outstanding shock resistance, is particularly useful for the application in military special type casing, floor, decorative sheet, motor part, set lights, household appliances shell and automobile construction part and interior trim manufacture.
Embodiment 4
The present embodiment provides a kind of high-performance refractory PP polymkeric substance.Its composition of raw materials is comprised of each component of following weight part:
0.6 part, oxidation inhibitor;
1 12 parts of fireproofing agents;
27 parts of fireproofing agents;
77.5 parts of PP;
Described oxidation inhibitor is the composite antioxidant K25 that Hongjiang City Chang He Chemical Co., Ltd. produces, and described fireproofing agent 1 is FR-266, and described fireproofing agent 2 is TPP.
The preparation method of above-mentioned a kind of high-performance refractory PP polymkeric substance, it specifically comprises the steps: according to above-mentioned ratio, oxidation inhibitor, fireproofing agent 1, fireproofing agent 2, PP to be packed into after being repeatedly uniformly mixed in stirrer and sent in twin screw extruder,
212 ℃temperature under melting mixing, gained melt is extruded by tank cooling by duplex forcing machine, introduce dicing machine and carry out pelletizing operation, gained pellet is described high-performance refractory PP polymkeric substance.
Described stirring repeatedly refers to stirs three times repeatedly, and each churning time is 33 minutes.The rotating speed of described stirrer is 900 revs/min.
The rotating speed of described duplex forcing machine is 311 revs/min.
Described melt is extruded when cooling by tank by duplex forcing machine, and tank temperature used is 65 ℃.
The rotating speed of described dicing machine is 710 revs/min.
Adopt ASTM international standard to carry out its result of performance test to it product of the present embodiment as shown in table 4:
The performance test results of table 4 embodiment 4
Character | Method | Unit | Data |
Proportion | ASTMD792 | — | 0.95 |
Mould shrinks | ASTMD955 | % | 1.3-1.6 |
Unit elongation | ASTMD638 | % | 71 |
Tensile strength | ASTMD638 | Mpa | 18 |
Flexural strength | ASTMD790 | Mpa | 21 |
Bending modulus | ASTMD790 | Mpa | 1180 |
Notched Izod impact strength (1/8 ") | ASTMD256 | J/M | 260 |
Heat-drawn wire | ASTMD648 | ℃ | 138 |
Flame resistivity | UL94 | (1/8") | V0 |
Drying temperature | — | ℃ | 90 |
Time of drying | — | HR | 4 |
Melt temperature | — | ℃ | 190-220 |
Suggestion mould temperature | — | ℃ | 50 |
As seen from the above table, the high-performance refractory PP polymkeric substance that the present embodiment provides has good flame retardant properties.Simultaneously, the high-performance refractory PP polymkeric substance of the present embodiment also shows outstanding shock resistance, is particularly useful for the application in military special type casing, floor, decorative sheet, motor part, set lights, household appliances shell and automobile construction part and interior trim manufacture.
Embodiment 5
The present embodiment provides a kind of high-performance refractory PP polymkeric substance.Its composition of raw materials is comprised of each component of following weight part:
1.3 parts, oxidation inhibitor;
1 14 parts of fireproofing agents;
25 parts of fireproofing agents;
84.9 parts of PP;
Described oxidation inhibitor is the composite antioxidant K25 that Hongjiang City Chang He Chemical Co., Ltd. produces, and described fireproofing agent 1 is FR-266, and described fireproofing agent 2 is TPP.
The preparation method of above-mentioned a kind of high-performance refractory PP polymkeric substance, it specifically comprises the steps: according to above-mentioned ratio, oxidation inhibitor, fireproofing agent 1, fireproofing agent 2, PP to be packed into after being repeatedly uniformly mixed in stirrer and sent in twin screw extruder,
199 ℃temperature under melting mixing, gained melt is extruded by tank cooling by duplex forcing machine, introduce dicing machine and carry out pelletizing operation, gained pellet is described high-performance refractory PP polymkeric substance.
Described stirring repeatedly refers to stirs three times repeatedly, and each churning time is 40 minutes.The rotating speed of described stirrer is 680 revs/min.
The rotating speed of described duplex forcing machine is 570 revs/min.
Described melt is extruded when cooling by tank by duplex forcing machine, and tank temperature used is 65 ℃.
The rotating speed of described dicing machine is 940 revs/min.
Adopt ASTM international standard to carry out its result of performance test to it product of the present embodiment as shown in table 5:
The performance test results of table 5 embodiment 5
Character | Method | Unit | Data |
Proportion | ASTMD792 | — | 0.95 |
Mould shrinks | ASTMD955 | % | 1.3-1.6 |
Unit elongation | ASTMD638 | % | 73 |
Tensile strength | ASTMD638 | Mpa | 20 |
Flexural strength | ASTMD790 | Mpa | 27 |
Bending modulus | ASTMD790 | Mpa | 1150 |
Notched Izod impact strength (1/8 ") | ASTMD256 | J/M | 253 |
Heat-drawn wire | ASTMD648 | ℃ | 138 |
Flame resistivity | UL94 | (1/8") | V0 |
Drying temperature | — | ℃ | 90 |
Time of drying | — | HR | 4 |
Melt temperature | — | ℃ | 190-220 |
Suggestion mould temperature | — | ℃ | 50 |
As seen from the above table, the high-performance refractory PP polymkeric substance that the present embodiment provides has good flame retardant properties.Simultaneously, the high-performance refractory PP polymkeric substance of the present embodiment also shows outstanding shock resistance, is particularly useful for the application in military special type casing, floor, decorative sheet, motor part, set lights, household appliances shell and automobile construction part and interior trim manufacture.
Be more than wherein specific implementation of the present invention, it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these apparent replacement forms all belong to protection scope of the present invention.
Claims (8)
1. a high-performance refractory PP polymkeric substance, its composition of raw materials is comprised of each component of following weight part:
Oxidation inhibitor 0.3-1.5 part;
Fireproofing agent 1 10-15 part;
Fireproofing agent 2 4-8 parts;
PP 77.5-84.9 part;
Described oxidation inhibitor is the composite antioxidant K25 that Hongjiang City Chang He Chemical Co., Ltd. produces, and described fireproofing agent 1 is FR-266, and described fireproofing agent 2 is TPP.
2. a kind of preparation method of high-performance refractory PP polymkeric substance described in a claim 1, it specifically comprises the steps: according to ratio claimed in claim 1, oxidation inhibitor, fireproofing agent 1, fireproofing agent 2, PP to be packed into after being repeatedly uniformly mixed in stirrer and sent in twin screw extruder,
190-220 ℃temperature under melting mixing, gained melt is extruded by tank cooling by duplex forcing machine, introduce dicing machine and carry out pelletizing operation, gained pellet is described high-performance refractory PP polymkeric substance.
3. the preparation method of high-performance refractory PP polymkeric substance according to claim 2, is characterized in that: described stirring repeatedly refers to stirs three times repeatedly, and each churning time is
30-50minute.
4. the preparation method of high-performance refractory PP polymkeric substance according to claim 2, is characterized in that: the rotating speed of described stirrer is
650-1000rev/min.
5. the preparation method of high-performance refractory PP polymkeric substance according to claim 2, is characterized in that: the rotating speed of described duplex forcing machine is
250-600rev/min.
6. the preparation method of high-performance refractory PP polymkeric substance according to claim 2, is characterized in that: described melt is extruded when cooling by tank by duplex forcing machine, and tank temperature used is
60-75℃.
7. the preparation method of high-performance refractory PP polymkeric substance according to claim 2, is characterized in that: the rotating speed of described dicing machine is
600-900rev/min.
8. the application of high-performance refractory PP polymkeric substance claimed in claim 1 in military special type casing, floor, decorative sheet, motor part, set lights, household appliances shell and automobile construction part and interior trim manufacture.
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CN101148526A (en) * | 2007-09-04 | 2008-03-26 | 华南理工大学 | Metal hydroxide halogen-free anti-flaming polyolefin composition and preparation method thereof |
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CN101851362A (en) * | 2010-05-28 | 2010-10-06 | 金发科技股份有限公司 | Halogen-free flame-retardant polyolefin injection-grade wood-plastic composite and preparation method thereof |
CN102731899A (en) * | 2012-06-08 | 2012-10-17 | 佛山市顺德区圆融新材料有限公司 | Inflaming retarding polypropylene composite material |
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CN101148526A (en) * | 2007-09-04 | 2008-03-26 | 华南理工大学 | Metal hydroxide halogen-free anti-flaming polyolefin composition and preparation method thereof |
CN101358010A (en) * | 2008-08-25 | 2009-02-04 | 中山市纳普工程塑料有限公司 | Non-halogen flame-retarding plastic |
CN101851362A (en) * | 2010-05-28 | 2010-10-06 | 金发科技股份有限公司 | Halogen-free flame-retardant polyolefin injection-grade wood-plastic composite and preparation method thereof |
CN102731899A (en) * | 2012-06-08 | 2012-10-17 | 佛山市顺德区圆融新材料有限公司 | Inflaming retarding polypropylene composite material |
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