CN102558803A - Automobile bumper material and preparation method thereof - Google Patents
Automobile bumper material and preparation method thereof Download PDFInfo
- Publication number
- CN102558803A CN102558803A CN2011104360784A CN201110436078A CN102558803A CN 102558803 A CN102558803 A CN 102558803A CN 2011104360784 A CN2011104360784 A CN 2011104360784A CN 201110436078 A CN201110436078 A CN 201110436078A CN 102558803 A CN102558803 A CN 102558803A
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- CN
- China
- Prior art keywords
- calcium sulfate
- bumper
- maleic anhydride
- vegetable fibre
- screw extruder
- 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.)
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Classifications
-
- 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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
-
- 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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
-
- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- 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
-
- 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
- B29C2948/9259—Angular velocity
-
- 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
-
- 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
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92885—Screw or gear
-
- 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
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
Abstract
The invention provides an automobile bumper material and a preparation method thereof. The automobile bumper material comprises the following components by weight: 20% to 45% of polypropylene, 8% to 20% of saturated ethylene octene copolymer, 15% to 25% of calcium sulfate whisker, 8% to 12% of polypropylene grafted maleic anhydride copolymer, 32% to 45% of unsaturated polyester resin and 6% to 25% of plant fiber. The preparation method includes first evenly mixing materials except the calcium sulfate whisker in a mixing machine according to proportion, then adding the calcium sulfate whisker, extruding out the obtained materials and conducting cooling and pelleting on the materials. By modification of the materials, system impact strength is improved. The calcium sulfate whisker is adopted as the reinforcing material to improve composite body strength and simultaneously reduce molding shrinkage of products. The unsaturated polyester resin and the plant fiber are adopted to conduct infiltration and integration to reduce the weight of a bumper and effectively reduce pollution of waste of the bumper to the environment.
Description
Technical field
The invention belongs to the bumper field, it is material modified and preparation method thereof to be specifically related to a kind of Vestolen PP 7052, vegetable fibre.
Background technology
Bumper is that a kind of surface-area is big, complex-shaped thin-walled large-sized structural component, and it not only requires to have excellent high and low temperature impelling strength, rigidity, stability to aging, thermotolerance, winter hardiness, also will have performances such as oil resistant, lubricating oil, paint.The most important thing is wherein to have that higher quality is light, impelling strength and good processing flowability ability.
Vestolen PP 7052 (PP) is with advantages such as its low density, easy-formation processing, recyclable utilizations, and the application on automobile constantly increases, and particularly is applied to prepare bumper, is that consumption is maximum in the automotive plastic, plastics variety with the fastest developing speed.But the low temperature brittleness that is is poor, molding shrinkage big, impact resistance is poor, therefore, and need be when being used for bumper to its modification.
Though the glass-reinforced plastic material of spun glass and vibrin matrix have other material incomparable excellent properties; But these glass-reinforced plastic material finished product are after discarding; Can't recycle; Spun glass and vibrin complex body can't decompose in long-time again, to utilization and environment cause very big negative impact again.
At present; The working method of PP material dedicated for bumper mainly is the mechanical blending method; Promptly adopt twin screw extruder with PP, PE, toughner, mineral filler and other auxiliary agent blend granulations; Wherein toughner adopts terpolymer EP rubber (EPDM), unsaturated ethylene one octene copolymer (POE), styrene-butadiene one styrol copolymer etc. mostly, and filler comprises talcum powder, mica, spun glass, lime carbonate etc.Existing bumper special material system has PP/EPDMj talcum powder co-mixing system, the PP/PE/POEjEPR co-mixing system, and PP/CPP/POE/ wollastonite blending modification system etc., wherein spun glass is difficult to be degraded, and can not recycle.
Summary of the invention
The present invention provides bumper material of a kind of light weight, impelling strength and good processing flowability ability and preparation method thereof.
In order to solve the problems of the technologies described above; The present invention provides following technical scheme: the bumper material comprises following component in percentage by weight: Vestolen PP 7052: 20%～45%; Unsaturated ethylene one octene copolymer: 8%～20%, calcium sulfate crystal whiskers: 15%～25 %, polypropylene grafted maleic anhydride multipolymer: 8%～12%; Unsaturated polyester resin: 32%～45%, vegetable fibre: 6%～25%.
Adopt technique scheme, among the present invention, it is toughness reinforcing to adopt unsaturated ethylene one octene copolymer that Vestolen PP 7052 is carried out, and improves the system shock strength, reduces the product molding shrinking percentage simultaneously; Adopt calcium sulfate crystal whiskers as strongthener, reduce the molding shrinkage of goods when improving complex body intensity; Adopt the polypropylene grafted maleic anhydride multipolymer as expanding material, improve the consistency of calcium sulfate crystal whiskers and matrix resin, the enhancement of calcium sulfate crystal whiskers is given full play to; Adopt unsaturated polyester resin and vegetable fibre to soak into and merge, alleviate the weight of collision bumper, effectively reduce of the pollution of collision bumper waste environment.
Further, the concrete component of the weight percent of above-mentioned bumper material: Vestolen PP 7052: 23%, unsaturated ethylene one octene copolymer: 9%, calcium sulfate article palpus: 15%, polypropylene grafted maleic anhydride multipolymer: l0%, unsaturated polyester resin; 35%, vegetable fibre: 8%.
Further, the major diameter of said calcium sulfate crystal whiskers is greater than 35～80um, and diameter is 3～5um, and cost is lower.
Further, the percentage of grafting of maleic anhydride is 1% in the said polypropylene grafted maleic anhydride multipolymer, and melt flow rate(MFR) can better improve the consistency of calcium sulfate crystal whiskers and matrix resin, the good fluidity of processing greater than 100g/lOmin in this scope.
Further, described unsaturated polyester resin is selected from adjacent benzene type vibrin, metaphenylene vibrin, bisphenol A-type vibrin and vinyl ester resin.
Further, described vegetable fibre is flaxen fiber and bamboo fibers, domestic aboundresources, and cost is low.
Further, described vegetable fibre utilizes sodium hydroxide solution to carry out surface treatment, and the vegetable fibre after the processing can soak into, merge with unsaturated polyester resin.
Bumper preparation methods of the present invention is characterized in that: may further comprise the steps:
1. vegetable fibre is put into sodium hydroxide solution and carry out surface treatment;
2. raw materials mix is even: mix in mixing machine according to the vegetable fibre of proportioning after with Vestolen PP 7052, unsaturated ethylene one octene copolymer, polypropylene grafted maleic anhydride multipolymer, unsaturated polyester resin and processing;
3. add calcium sulfate crystal whiskers: calcium sulfate crystal whiskers is added a mouthful adding from the side direction of twin screw extruder;
4. mixing in twin screw extruder: the mixture that 2. step is obtained adds in the twin screw extruder mixing, and the temperature of twin screw extruder is set between 180～200 ℃, and the twin screw extruder rotating speed is 330r/min;
5. the material that obtains is extruded postcooling, pelletizing, promptly obtain the bumper material.
Embodiment
The bumper material comprises following component in percentage by weight: Vestolen PP 7052: 20%～45%; Unsaturated ethylene one octene copolymer: 8%～20%; Calcium sulfate crystal whiskers: 15%～25 %; The polypropylene grafted maleic anhydride multipolymer: 8%～12%, unsaturated polyester resin: 32%～45%, vegetable fibre: 6%～25%.
As preferably, the concrete component of the weight percent of bumper material: Vestolen PP 7052: 23%, unsaturated ethylene one octene copolymer: 9%, the calcium sulfate article must: 15%, polypropylene grafted maleic anhydride multipolymer: l0%, unsaturated polyester resin; 35%, vegetable fibre: 8%.Wherein the major diameter of calcium sulfate crystal whiskers is greater than 35～80um; Diameter is 3～5um; The percentage of grafting of maleic anhydride is 1% in the polypropylene grafted maleic anhydride multipolymer, and melt flow rate(MFR) is greater than 100g/lOmin, and unsaturated polyester resin is selected from adjacent benzene type vibrin, metaphenylene vibrin, bisphenol A-type vibrin and vinyl ester resin; Vegetable fibre is flaxen fiber and bamboo fibers, and vegetable fibre utilizes sodium hydroxide solution to carry out surface treatment.
The bumper preparation methods is characterized in that: may further comprise the steps:
1. vegetable fibre is put into sodium hydroxide solution and carry out surface treatment, bamboo fibers wherein is that bamboo wood is carried out mechanical presses, screens the thick bamboo fibers that obtains;
2. raw materials mix is even: according to proportioning with Vestolen PP 7052, unsaturated ethylene one octene copolymer, polypropylene grafted maleic anhydride multipolymer, unsaturated polyester resin (adjacent benzene type vibrin, metaphenylene vibrin, bisphenol A-type vibrin and vinyl ester resin; In these four kinds of resins, choose wherein one or any several kinds of mixing arbitrarily) and handle after vegetable fibre (flaxen fiber and bamboo fibers, in these two kinds of fibers, choose wherein a kind of arbitrarily or two kinds proportionally mix) in mixing machine, mix;
3. add calcium sulfate crystal whiskers: calcium sulfate crystal whiskers is added a mouthful adding from the side direction of twin screw extruder;
4. mixing in twin screw extruder: the mixture that 2. step is obtained adds in the twin screw extruder mixing, and the temperature of twin screw extruder is set between 180～200 ℃, and the twin screw extruder rotating speed is 330r/min;
5. the material that obtains is extruded postcooling, pelletizing, promptly obtain the bumper material.
In the preparation process, also need add nucleator, oxidation inhibitor, lubricant, solidifying agent etc.
Embodiment 1
With 23 parts of Vestolen PP 7052,9 parts of unsaturated ethylene one octene copolymers, polypropylene grafted maleic anhydride multipolymer l0 part, 35 parts of unsaturated polyester resins; Vegetable fibre mixes in mixing machine for 8 parts, and 15 parts of calcium sulfate crystal whiskers add adding from the side direction of twin screw extruder, and wherein the major diameter of calcium sulfate crystal whiskers is 50um; Diameter is 4um, and the percentage of grafting of maleic anhydride is 1% in the polypropylene grafted maleic anhydride multipolymer, and melt flow rate(MFR) is greater than 100g/lOmin; Vibrin is bisphenol A-type vibrin and vinyl ester resin, and ratio is: 1:1, vegetable fibre are flaxen fiber and bamboo fibers; Ratio is: 1:1, and then that blend is mixing in twin screw extruder, the temperature of twin screw extruder is set at 190 ℃; Rotating speed is 330r/min, and extruding pelletization finally obtains the bumper proprietary material.
Embodiment 2
With 20 parts of Vestolen PP 7052,19 parts of unsaturated ethylene one octene copolymers, 8 parts of polypropylene grafted maleic anhydride multipolymers; 32 parts of unsaturated polyester resins, vegetable fibre mixes in mixing machine for 6 parts, and 15 parts of calcium sulfate crystal whiskers add adding from the side direction of twin screw extruder; Wherein the major diameter of calcium sulfate crystal whiskers is 50um, and diameter is 4um, and the percentage of grafting of maleic anhydride is 1% in the polypropylene grafted maleic anhydride multipolymer; Melt flow rate(MFR) is greater than 100g/lOmin, and vibrin is adjacent benzene type vibrin, metaphenylene vibrin, and ratio is: 1:1; Vegetable fibre is a flaxen fiber, and is then that blend is mixing in twin screw extruder, and the temperature of twin screw extruder is set at 200 ℃; Rotating speed is 330r/min, and extruding pelletization finally obtains the bumper proprietary material.
Embodiment 3
With polipropene 25 part, 8 parts of unsaturated ethylene one octene copolymers, 0 part of polypropylene grafted maleic anhydride copolymer 1; 32 parts of unsaturated polyester resins, vegetable fibre mixes in mixing machine for 6 parts, and 19 parts of calcium sulfate crystal whiskers add adding from the side direction of twin screw extruder; Wherein the major diameter of calcium sulfate crystal whiskers is 80um, and diameter is 5um, and the percentage of grafting of maleic anhydride is 1% in the polypropylene grafted maleic anhydride multipolymer; Melt flow rate(MFR) is greater than 100g/lOmin, and vibrin is adjacent benzene type vibrin, bisphenol A-type vibrin and vinyl ester resin, and ratio is: 1:1:1; Vegetable fibre is a bamboo fibers, and is then that blend is mixing in twin screw extruder, and the temperature of twin screw extruder is set at 200 ℃; Rotating speed is 330r/min, and extruding pelletization finally obtains the bumper proprietary material.
Above-described only is preferred implementation of the present invention; Should be understood that; For a person skilled in the art, under the prerequisite that does not break away from structure of the present invention, can also make some distortion and improvement; These also should be regarded as protection scope of the present invention, and these can not influence effect and practical applicability that the present invention implements.
Claims (8)
1. bumper material; It is characterized in that: comprise following component in percentage by weight: Vestolen PP 7052: 20%～45%; Unsaturated ethylene one octene copolymer: 8%～20%, calcium sulfate crystal whiskers: 15%～25 %, polypropylene grafted maleic anhydride multipolymer: 8%～12%; Unsaturated polyester resin: 32%～45%, vegetable fibre: 6%～25%.
2. bumper material according to claim 1; It is characterized in that: the concrete component of its weight percent: Vestolen PP 7052: 23%, unsaturated ethylene one octene copolymer: 9%, calcium sulfate article palpus: 15%; Polypropylene grafted maleic anhydride multipolymer: l0%, unsaturated polyester resin; 35%, vegetable fibre: 8%.
3. bumper material according to claim 1 and 2 is characterized in that: the major diameter of said calcium sulfate crystal whiskers is greater than 35～80um, and diameter is 3～5um.
4. bumper material according to claim 1 and 2 is characterized in that: the percentage of grafting of maleic anhydride is 1% in the said polypropylene grafted maleic anhydride multipolymer, and melt flow rate(MFR) is greater than 100g/lOmin.
5. bumper material according to claim 1 and 2 is characterized in that: described unsaturated polyester resin is selected from adjacent benzene type vibrin, metaphenylene vibrin, bisphenol A-type vibrin and vinyl ester resin.
6. bumper material according to claim 1 and 2 is characterized in that: described vegetable fibre is flaxen fiber and bamboo fibers.
7. bumper material according to claim 1 and 2 is characterized in that: described vegetable fibre utilizes sodium hydroxide solution to carry out surface treatment.
8. the above bumper preparation methods of claim is characterized in that: may further comprise the steps:
1. vegetable fibre is put into sodium hydroxide solution and carry out surface treatment;
2. raw materials mix is even: mix in mixing machine according to the vegetable fibre of proportioning after with Vestolen PP 7052, unsaturated ethylene one octene copolymer, polypropylene grafted maleic anhydride multipolymer, unsaturated polyester resin and processing;
3. add calcium sulfate crystal whiskers: calcium sulfate crystal whiskers is added a mouthful adding from the side direction of twin screw extruder;
4. mixing in twin screw extruder: the mixture that 2. step is obtained adds in the twin screw extruder mixing, and the temperature of twin screw extruder is set between 180～200 ℃, and the twin screw extruder rotating speed is 330r/min;
5. the material that obtains is extruded postcooling, pelletizing, promptly obtain the bumper material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104360784A CN102558803A (en) | 2011-12-23 | 2011-12-23 | Automobile bumper material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104360784A CN102558803A (en) | 2011-12-23 | 2011-12-23 | Automobile bumper material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102558803A true CN102558803A (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104360784A Pending CN102558803A (en) | 2011-12-23 | 2011-12-23 | Automobile bumper material and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103214741A (en) * | 2013-05-08 | 2013-07-24 | 上海瀚氏模具成型有限公司 | Environment-friendly bamboo-plastic automobile instrument and manufacturing method thereof |
| CN103232641A (en) * | 2013-05-08 | 2013-08-07 | 上海瀚氏模具成型有限公司 | Environment-friendly bamboo-plastic automotive bumper and preparation method thereof |
| CN103951995A (en) * | 2013-06-14 | 2014-07-30 | 湖南铂湘新材料研究有限公司 | Recycling technology for manufacturing industrial pallets by utilizing organic solid waste in furniture industry |
| CN104893092A (en) * | 2014-03-07 | 2015-09-09 | 现代自动车株式会社 | Polyolefin-natural fiber composite composition for extrusion molding |
| CN107488340A (en) * | 2016-12-03 | 2017-12-19 | 安徽富丽华化工有限公司 | A kind of unsaturated polyester resin with superior insulation performance and preparation method thereof |
| CN108148284A (en) * | 2016-12-05 | 2018-06-12 | 合肥杰事杰新材料股份有限公司 | A kind of weapon packing case material of counter infrared ray detection and preparation method thereof |
| CN108690255A (en) * | 2017-04-11 | 2018-10-23 | 合肥杰事杰新材料股份有限公司 | A kind of low cost can hide wood-plastic board of infrared acquisition and preparation method thereof |
-
2011
- 2011-12-23 CN CN2011104360784A patent/CN102558803A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103214741A (en) * | 2013-05-08 | 2013-07-24 | 上海瀚氏模具成型有限公司 | Environment-friendly bamboo-plastic automobile instrument and manufacturing method thereof |
| CN103232641A (en) * | 2013-05-08 | 2013-08-07 | 上海瀚氏模具成型有限公司 | Environment-friendly bamboo-plastic automotive bumper and preparation method thereof |
| CN103214741B (en) * | 2013-05-08 | 2015-02-25 | 上海瀚氏模具成型有限公司 | Environment-friendly bamboo-plastic automobile instrument and manufacturing method thereof |
| CN103951995A (en) * | 2013-06-14 | 2014-07-30 | 湖南铂湘新材料研究有限公司 | Recycling technology for manufacturing industrial pallets by utilizing organic solid waste in furniture industry |
| CN104893092A (en) * | 2014-03-07 | 2015-09-09 | 现代自动车株式会社 | Polyolefin-natural fiber composite composition for extrusion molding |
| CN107488340A (en) * | 2016-12-03 | 2017-12-19 | 安徽富丽华化工有限公司 | A kind of unsaturated polyester resin with superior insulation performance and preparation method thereof |
| CN108148284A (en) * | 2016-12-05 | 2018-06-12 | 合肥杰事杰新材料股份有限公司 | A kind of weapon packing case material of counter infrared ray detection and preparation method thereof |
| CN108690255A (en) * | 2017-04-11 | 2018-10-23 | 合肥杰事杰新材料股份有限公司 | A kind of low cost can hide wood-plastic board of infrared acquisition and preparation method thereof |
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Application publication date: 20120711 |