CN108624003A - A kind of long-acting high-temperature resistance plastice and preparation method thereof - Google Patents
A kind of long-acting high-temperature resistance plastice and preparation method thereof Download PDFInfo
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- CN108624003A CN108624003A CN201810577821.XA CN201810577821A CN108624003A CN 108624003 A CN108624003 A CN 108624003A CN 201810577821 A CN201810577821 A CN 201810577821A CN 108624003 A CN108624003 A CN 108624003A
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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
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2251—Oxides; Hydroxides of metals of chromium
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
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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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- Compositions Of Macromolecular Compounds (AREA)
Abstract
A kind of long-acting high-temperature resistance plastice of present invention offer and preparation method thereof, is related to technical field of plastic.The plastics are made of the raw material of following parts by weight：40 60 parts of epoxy resin, 20 30 parts of polyvinyl chloride, 23 parts of nano silicon dioxide, 36 parts of graphite, 13 parts of calcium carbonate, 13 parts of boron nitride, 23 parts of magnesia, 1.2 1.6 parts of chrome green, 0.6 1.2 parts of acetamide, 1 1.4 parts of polyvinylpyrrolidone, 1.2 1.6 parts of ethylenediamine tetra-acetic acid, 0.8 1.6 parts of antioxidant, 0.4 0.8 parts of fire retardant, 1.2 1.4 parts of plasticiser, 0.6 1 parts of dispersant.The present invention overcomes the deficiencies in the prior art, the high temperature resistance of common plastics is improved, and the several additives cooperation that reacts to each other can make product have many advantages, such as that stability is good, at low cost, wear-resisting, corrosion resistant in inventive formulation.
Description
Technical field
The present invention relates to technical field of plastic, and in particular to a kind of long-acting high-temperature resistance plastice and preparation method thereof.
Background technology
Plastics are a kind of synthetic materials, are one of the main materials that modern people use, with the development of the times at me
Plastic industry of the state as one of light industry pillar industry, in recent years growth rate be always held at 10% or more, keeping
While very fast development speed, economic benefit also has new raising.The above enterprise's output value total value of plastic article industry scale is light
Third is occupied in 19 main industries of work, realizes sales ratio of industrial enterprises 97.8%, is higher than light industry average level.It is set from synthesis
From the point of view of fat, plastics machinery and plastic products production, the powerful growth momentum of China Plastics Industry is all shown.
The plastic material product market demand is big, but competes same fierceness, so producing the plastics with certain function
It is the main direction of studying of present plastic material industry, conventional plastic product non-refractory is easy heat and melts, and volatilizes
A large amount of harmful substances make the application of plastic product in some cases be restricted, and existing high-temperature resistance plastice cost is higher,
And its heat safe performance is simultaneously unstable.
Invention content
In view of the shortcomings of the prior art, a kind of long-acting high-temperature resistance plastice of present invention offer and preparation method thereof, improves common
The high temperature resistance of plastics, and in inventive formulation several additives react to each other cooperation can make product have stability it is good,
The advantages that at low cost, wear-resisting, corrosion resistant.
In order to achieve the above object, technical scheme of the present invention is achieved by the following technical programs：
A kind of long-acting high-temperature resistance plastice, the plastics are made of the raw material of following parts by weight：40-60 parts of epoxy resin gathers
20-30 parts of vinyl chloride, 2-3 parts of nano silicon dioxide, 3-6 parts of graphite, 1-3 parts of calcium carbonate, 1-3 parts of boron nitride, magnesia 2-3
Part, 1.2-1.6 parts of chrome green, 0.6-1.2 parts of acetamide, 1-1.4 parts of polyvinylpyrrolidone, ethylenediamine tetra-acetic acid 1.2-
1.6 parts, 0.8-1.6 parts of antioxidant, 0.4-0.8 parts of fire retardant, 1.2-1.4 parts of plasticiser, 0.6-1 parts of dispersant.
Preferably, a kind of long-acting high-temperature resistance plastice, the plastics are made of the raw material of following parts by weight：Epoxy resin 50
Part, 25 parts of polyvinyl chloride, 2.5 parts of nano silicon dioxide, 4.5 parts of graphite, 2 parts of calcium carbonate, 2 parts of boron nitride, 2.5 parts of magnesia,
1.4 parts of chrome green, 0.9 part of acetamide, 1.2 parts of polyvinylpyrrolidone, 1.4 parts of ethylenediamine tetra-acetic acid, antioxidant 1.2
Part, 0.6 part of fire retardant, 1.3 parts of plasticiser, 0.8 part of dispersant.
Preferably, the antioxidant is 2,6- three-level butyl -4- methylphenols, bis- (3,5- three-level butyl -4- hydroxy benzenes
At least one of base) thioether.
Preferably, the fire retardant is in aluminium hydroxide, magnesium hydroxide, monoammonium phosphate, Diammonium phosphate (DAP), ammonium chloride, boric acid
At least one.
Preferably, the plasticiser is (2- ethyl hexyls) ester of phthalic acid two and dioctyl phthalate mass ratio 1:
1 mixture.
Preferably, the dispersant is at least one of triethyl group hexyl phosphoric acid, lauryl sodium sulfate and methyl anyl alcohol.
The preparation method of long-acting high-temperature resistance plastice, the described method comprises the following steps：
(1) by calcium carbonate, boron nitride, magnesia, chrome green and ethylenediamine tetra-acetic acid in blender with 40-60r/
The rotating speed of min stirs 20-30min, stands 10-20min afterwards, it is spare to obtain mixture；
(2) epoxy resin and polyvinyl chloride are poured into blender, is heated to 200-220 DEG C, with 200-400r/min's
Nano silicon dioxide and graphite is added after stirring 10-20min in rotating speed, continues to stir 10-15min, it is spare to obtain mixed resin；
(3) acetamide and polyvinylpyrrolidone are mixed and is added in the mixed resin in above-mentioned steps (2), with 80-
The rotating speed of 100r/min stirs, and the mixture in above-mentioned steps (1) is added when stirring just, continues to stir 20-30min.
(4) by antioxidant, fire retardant, plasticiser and dispersant be added in above-mentioned steps (3) it is stirred after material
In, adjusting rotating speed be 400-600r/min, stir 1-2h, after mixed material is poured into molding machine, extrusion forming obtains of the invention
Plastics.
A kind of long-acting high-temperature resistance plastice of present invention offer and preparation method thereof, advantage is compared with prior art：
(1) present invention uses epoxy resin and polyvinyl chloride for base-material, and wherein polyvinyl chloride is thermoplastic resin, and cooperation is originally
Invention formula in other additives, can effectively reinforced plastics heat resistance.
(2) first calcium carbonate, boron nitride, magnesia and chrome green and ethylenediamine tetra-acetic acid are mixed by the present invention,
Wherein ethylenediamine tetra-acetic acid is a kind of chelating agent that can be combined with bivalent metal ion, can effectively enhance the stabilization of the present invention
Property, comprehensive heat-resisting, the corrosion resistant performance for promoting plastics of the present invention.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, with reference to the embodiment of the present invention pair
Technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is a part of the invention
Embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making wound
The every other embodiment obtained under the premise of the property made labour, shall fall within the protection scope of the present invention.
Embodiment 1：
A kind of long-acting high-temperature resistance plastice, the plastics are made of the raw material of following parts by weight：40 parts of epoxy resin, polychlorostyrene second
20 parts of alkene, 2 parts of nano silicon dioxide, 3 parts of graphite, 1 part of calcium carbonate, 1 part of boron nitride, 2 parts of magnesia, 1.2 parts of chrome green,
0.6 part of acetamide, 1 part of polyvinylpyrrolidone, 1.2 parts of ethylenediamine tetra-acetic acid, 0.8 part of antioxidant, 0.4 part of fire retardant, modeling
1.2 parts of agent, 0.6 part of dispersant.
The antioxidant is 2,6- three-level butyl -4- methylphenols, bis- (3,5- three-level butyl -4- hydroxy phenyls) thioethers
At least one of；The fire retardant is in aluminium hydroxide, magnesium hydroxide, monoammonium phosphate, Diammonium phosphate (DAP), ammonium chloride, boric acid
It is at least one；The plasticiser is that (2- ethyl hexyls) ester of phthalic acid two and dioctyl phthalate mass ratio 1: 1 mix
Object；The dispersant is at least one of triethyl group hexyl phosphoric acid, lauryl sodium sulfate and methyl anyl alcohol.
The preparation method of long-acting high-temperature resistance plastice, the described method comprises the following steps：
(1) by calcium carbonate, boron nitride, magnesia, chrome green and ethylenediamine tetra-acetic acid in blender with 40-60r/
The rotating speed of min stirs 20-30min, stands 10-20min afterwards, it is spare to obtain mixture；
(2) epoxy resin and polyvinyl chloride are poured into blender, is heated to 200-220 DEG C, with 200-400r/min's
Nano silicon dioxide and graphite is added after stirring 10-20min in rotating speed, continues to stir 10-15min, it is spare to obtain mixed resin；
(3) acetamide and polyvinylpyrrolidone are mixed and is added in the mixed resin in above-mentioned steps (2), with 80-
The rotating speed of 100r/min stirs, and the mixture in above-mentioned steps (1) is added when stirring just, continues to stir 20-30min.
(4) by antioxidant, fire retardant, plasticiser and dispersant be added in above-mentioned steps (3) it is stirred after material
In, adjusting rotating speed be 400-600r/min, stir 1-2h, after mixed material is poured into molding machine, extrusion forming obtains of the invention
Plastics.
Embodiment 2：
A kind of long-acting high-temperature resistance plastice, the plastics are made of the raw material of following parts by weight：60 parts of epoxy resin, polychlorostyrene second
30 parts of alkene, 3 parts of nano silicon dioxide, 6 parts of graphite, 3 parts of calcium carbonate, 3 parts of boron nitride, 3 parts of magnesia, 1.6 parts of chrome green,
1.2 parts of acetamide, 1.4 parts of polyvinylpyrrolidone, 1.6 parts of ethylenediamine tetra-acetic acid, 1.6 parts of antioxidant, 0.8 part of fire retardant,
1.4 parts of plasticiser, 1 part of dispersant.
The antioxidant is 2,6- three-level butyl -4- methylphenols, bis- (3,5- three-level butyl -4- hydroxy phenyls) thioethers
At least one of；The fire retardant is in aluminium hydroxide, magnesium hydroxide, monoammonium phosphate, Diammonium phosphate (DAP), ammonium chloride, boric acid
It is at least one；The plasticiser is that (2- ethyl hexyls) ester of phthalic acid two and dioctyl phthalate mass ratio 1: 1 mix
Object；The dispersant is at least one of triethyl group hexyl phosphoric acid, lauryl sodium sulfate and methyl anyl alcohol.
The preparation method of long-acting high-temperature resistance plastice, the described method comprises the following steps：
(1) by calcium carbonate, boron nitride, magnesia, chrome green and ethylenediamine tetra-acetic acid in blender with 40-60r/
The rotating speed of min stirs 20-30min, stands 10-20min afterwards, it is spare to obtain mixture；
(2) epoxy resin and polyvinyl chloride are poured into blender, is heated to 200-220 DEG C, with 200-400r/min's
Nano silicon dioxide and graphite is added after stirring 10-20min in rotating speed, continues to stir 10-15min, it is spare to obtain mixed resin；
(3) acetamide and polyvinylpyrrolidone are mixed and is added in the mixed resin in above-mentioned steps (2), with 80-
The rotating speed of 100r/min stirs, and the mixture in above-mentioned steps (1) is added when stirring just, continues to stir 20-30min.
(4) by antioxidant, fire retardant, plasticiser and dispersant be added in above-mentioned steps (3) it is stirred after material
In, adjusting rotating speed be 400-600r/min, stir 1-2h, after mixed material is poured into molding machine, extrusion forming obtains of the invention
Plastics.
Embodiment 3：
A kind of long-acting high-temperature resistance plastice, the plastics are made of the raw material of following parts by weight：50 parts of epoxy resin, polychlorostyrene second
25 parts of alkene, 2.5 parts of nano silicon dioxide, 4.5 parts of graphite, 2 parts of calcium carbonate, 2 parts of boron nitride, 2.5 parts of magnesia, chrome green
1.4 parts, 0.9 part of acetamide, 1.2 parts of polyvinylpyrrolidone, 1.4 parts of ethylenediamine tetra-acetic acid, 1.2 parts of antioxidant, fire retardant
0.6 part, 1.3 parts of plasticiser, 0.8 part of dispersant.
The antioxidant is 2,6- three-level butyl -4- methylphenols, bis- (3,5- three-level butyl -4- hydroxy phenyls) thioethers
At least one of；The fire retardant is in aluminium hydroxide, magnesium hydroxide, monoammonium phosphate, Diammonium phosphate (DAP), ammonium chloride, boric acid
It is at least one；The plasticiser is that (2- ethyl hexyls) ester of phthalic acid two and dioctyl phthalate mass ratio 1: 1 mix
Object；The dispersant is at least one of triethyl group hexyl phosphoric acid, lauryl sodium sulfate and methyl anyl alcohol.
The preparation method of long-acting high-temperature resistance plastice, the described method comprises the following steps：
(1) by calcium carbonate, boron nitride, magnesia, chrome green and ethylenediamine tetra-acetic acid in blender with 40-60r/
The rotating speed of min stirs 20-30min, stands 10-20min afterwards, it is spare to obtain mixture；
(2) epoxy resin and polyvinyl chloride are poured into blender, is heated to 200-220 DEG C, with 200-400r/min's
Nano silicon dioxide and graphite is added after stirring 10-20min in rotating speed, continues to stir 10-15min, it is spare to obtain mixed resin；
(3) acetamide and polyvinylpyrrolidone are mixed and is added in the mixed resin in above-mentioned steps (2), with 80-
The rotating speed of 100r/min stirs, and the mixture in above-mentioned steps (1) is added when stirring just, continues to stir 20-30min.
(4) by antioxidant, fire retardant, plasticiser and dispersant be added in above-mentioned steps (3) it is stirred after material
In, adjusting rotating speed be 400-600r/min, stir 1-2h, after mixed material is poured into molding machine, extrusion forming obtains of the invention
Plastics.
Embodiment 4
Using plastics obtained by above-described embodiment 1-3 as experimental group 1-3, detection compares the heat distortion temperature of plastics of the present invention, choosing
Take common plastics PVC-P, HDPE, PC on the market, high-temperature resistance plastice PES, PFA, LCP, PEEK and high-temperature resistance plastice of the present invention
The temperature of its thermal deformation is tested under same environment, the results are shown in table below：
| Plastics | Heat distortion temperature/DEG C |
| Experimental group 1 | 280 |
| Experimental group 2 | 275 |
| Experimental group 3 | 280 |
| PVC-P | 50 |
| HDPE | 55 |
| PC | 115 |
| PES | 180 |
| PFA | 200 |
| LCP | 250 |
| PEEK | 260 |
As seen from the above table, plastics of the present invention are compared to high-temperature resistance plastice common on the market, and heat safe performance is more preferably more
Stablize, and the present invention is volatilized in making material without toxic contaminants material, heating unharmful substance, application range of the present invention is more
Extensively, meet environmental requirement.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, it will be understood by those of ordinary skill in the art that：It still can be to aforementioned each implementation
Technical solution recorded in example is modified or equivalent replacement of some of the technical features；And these modification or
It replaces, the spirit and scope for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution.
Claims (7)
1. a kind of long-acting high-temperature resistance plastice, which is characterized in that the plastics are made of the raw material of following parts by weight：Epoxy resin
40-60 parts, 20-30 parts of polyvinyl chloride, 2-3 parts of nano silicon dioxide, 3-6 parts of graphite, 1-3 parts of calcium carbonate, 1-3 parts of boron nitride,
2-3 parts of magnesia, 1.2-1.6 parts of chrome green, 0.6-1.2 parts of acetamide, 1-1.4 parts of polyvinylpyrrolidone, ethylenediamine
1.2-1.6 parts of tetraacethyl, 0.8-1.6 parts of antioxidant, 0.4-0.8 parts of fire retardant, 1.2-1.4 parts of plasticiser, dispersant 0.6-1
Part.
2. a kind of long-acting high-temperature resistance plastice according to claim 1, which is characterized in that the plastics are by following parts by weight
Raw material is made：50 parts of epoxy resin, 25 parts of polyvinyl chloride, 2.5 parts of nano silicon dioxide, 4.5 parts of graphite, 2 parts of calcium carbonate, nitridation
2 parts of boron, 2.5 parts of magnesia, 1.4 parts of chrome green, 0.9 part of acetamide, 1.2 parts of polyvinylpyrrolidone, ethylenediamine tetrem
1.4 parts of acid, 1.2 parts of antioxidant, 0.6 part of fire retardant, 1.3 parts of plasticiser, 0.8 part of dispersant.
3. a kind of long-acting high-temperature resistance plastice according to claim 1, it is characterised in that：The antioxidant is 2,6- three-levels
At least one of butyl -4- methylphenols, bis- (3,5- three-level butyl -4- hydroxy phenyls) thioethers.
4. a kind of long-acting high-temperature resistance plastice according to claim 1, it is characterised in that：The fire retardant be aluminium hydroxide,
At least one of magnesium hydroxide, monoammonium phosphate, Diammonium phosphate (DAP), ammonium chloride, boric acid.
5. a kind of long-acting high-temperature resistance plastice according to claim 1, it is characterised in that：The plasticiser is phthalic acid
Two (2- ethyl hexyls) esters and 1: 1 mixture of dioctyl phthalate mass ratio.
6. a kind of long-acting high-temperature resistance plastice according to claim 1, it is characterised in that：The dispersant is triethyl group hexyl
At least one of phosphoric acid, lauryl sodium sulfate and methyl anyl alcohol.
7. a kind of preparation method of long-acting high-temperature resistance plastice, which is characterized in that the described method comprises the following steps：
(1) by calcium carbonate, boron nitride, magnesia, chrome green and ethylenediamine tetra-acetic acid in blender with 40-60r/min
Rotating speed stir 20-30min, stand 10-20min afterwards, it is spare to obtain mixture；
(2) epoxy resin and polyvinyl chloride are poured into blender, is heated to 200-220 DEG C, with the rotating speed of 200-400r/min
Nano silicon dioxide and graphite is added after stirring 10-20min, continues to stir 10-15min, it is spare to obtain mixed resin；
(3) acetamide and polyvinylpyrrolidone are mixed and is added in the mixed resin in above-mentioned steps (2), with 80-100r/
The rotating speed of min stirs, and the mixture in above-mentioned steps (1) is added when stirring just, continues to stir 20-30min.
(4) by antioxidant, fire retardant, plasticiser and dispersant be added in above-mentioned steps (3) it is stirred after material in, adjust
Section rotating speed be 400-600r/min, stir 1-2h, after mixed material is poured into molding machine, extrusion forming obtains plastics of the present invention.
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| CN201810577821.XA CN108624003A (en) | 2018-06-07 | 2018-06-07 | A kind of long-acting high-temperature resistance plastice and preparation method thereof |
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| CN201810577821.XA CN108624003A (en) | 2018-06-07 | 2018-06-07 | A kind of long-acting high-temperature resistance plastice and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111690234A (en) * | 2020-07-27 | 2020-09-22 | 上海樱花塑料制品有限公司 | Preparation process and formula of high-temperature-resistant ton barrel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102964729A (en) * | 2012-12-05 | 2013-03-13 | 青岛鑫万通塑业发展有限公司 | Heat-resistant and high pressure-resistant PVC (Polyvinyl Chloride) tube |
| CN106085135A (en) * | 2016-08-03 | 2016-11-09 | 安徽省华久管业有限公司 | A kind of protective layer outside drain pipe |
| CN106085032A (en) * | 2016-08-03 | 2016-11-09 | 安徽省华久管业有限公司 | A kind of protective layer within steel band tubing |
-
2018
- 2018-06-07 CN CN201810577821.XA patent/CN108624003A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102964729A (en) * | 2012-12-05 | 2013-03-13 | 青岛鑫万通塑业发展有限公司 | Heat-resistant and high pressure-resistant PVC (Polyvinyl Chloride) tube |
| CN106085135A (en) * | 2016-08-03 | 2016-11-09 | 安徽省华久管业有限公司 | A kind of protective layer outside drain pipe |
| CN106085032A (en) * | 2016-08-03 | 2016-11-09 | 安徽省华久管业有限公司 | A kind of protective layer within steel band tubing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111690234A (en) * | 2020-07-27 | 2020-09-22 | 上海樱花塑料制品有限公司 | Preparation process and formula of high-temperature-resistant ton barrel |
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Application publication date: 20181009 |