CN109053984A - Environmental protection flame retardant foamed material and preparation method for offroad vehicle fuel tank - Google Patents
Environmental protection flame retardant foamed material and preparation method for offroad vehicle fuel tank Download PDFInfo
- Publication number
- CN109053984A CN109053984A CN201810681829.0A CN201810681829A CN109053984A CN 109053984 A CN109053984 A CN 109053984A CN 201810681829 A CN201810681829 A CN 201810681829A CN 109053984 A CN109053984 A CN 109053984A
- Authority
- CN
- China
- Prior art keywords
- environmental protection
- fuel tank
- flame retardant
- vehicle fuel
- isocyanates
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
- C08G18/4018—Mixtures of compounds of group C08G18/42 with compounds of group C08G18/48
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
-
- 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
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0083—Foam properties prepared using water as the sole blowing agent
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The environmental protection flame retardant foamed material and preparation method thereof that the invention discloses a kind of for offroad vehicle fuel tank, the raw material of environmental protection flame retardant foamed material for offroad vehicle fuel tank include isocyanates and synthesis material, wherein isocyanates and synthesis material press proportion by weight, isocyanates: the mass parts of synthesis material=1:1.5, component and each component that the synthesis material includes are as follows: polyethers 403:18~25 part；Polyester 200:55~65 part；Plasticizer: 4~9 parts；Catalyst: 2.8~3.0 parts；Polyethers 635:15~20 part；Fire retardant: 30~38 parts；Water: 1.5~2.5 parts；Glass fibre: 130~150 parts.The component of environmental protection flame retardant foamed material for offroad vehicle fuel tank of the invention and the proportion of each component are suitable, it is made to have the characteristic of high high temperature resistant, flame retardant property, high-intensitive, high density and environmental protection.
Description
Technical field
The environmental protection flame retardant foamed material and preparation method thereof that the present invention relates to a kind of for offroad vehicle fuel tank.
Background technique
Currently, people are to offroad vehicle portion with the development of offroad vehicle industry and the enhancing of people's awareness of safety, environmental consciousness
The requirement of part also dramatically increases, and the most important thing of the fuel tank of offroad vehicle as offroad vehicle need to have high temperature resistant, high fire-retardance, height
Intensity, high density, the characteristic of high in environmental protection.The characteristic of traditional offroad vehicle fuel tank is generally unable to reach comparatively ideal effect, deposits
In very big security risk.
Summary of the invention
The purpose of the present invention is to overcome the defects in the prior art, provides a kind of environmental protection resistance for offroad vehicle fuel tank
Fire foamed material, the proportion of its component and each component is suitable, and having it, high temperature resistant, flame retardant property be high, high-intensitive, high density
And the characteristic of environmental protection.
In order to solve the above-mentioned technical problem, the technical scheme is that a kind of environmental protection resistance for offroad vehicle fuel tank
Foamed material is fired, its raw material include that isocyanates and synthesis material, wherein isocyanates and synthesis material press proportion by weight, different
Cyanate: the mass parts of synthesis material=1:1.5, component and each component that the synthesis material includes are as follows:
Polyethers 403:18~25 part；
Polyester 200:55~65 part；
Plasticizer: 4~9 parts；
Catalyst: 2.8~3.0 parts；
Polyethers 635:15~20 part；
Fire retardant: 30~38 parts；
Water: 1.5~2.5 parts；
Glass fibre: 130~150 parts.
Further, the plasticizer is plasticizer 3320.
Further, the catalyst is catalyst FM-180.
Further, the fire retardant is fire retardant TCPP.
A kind of preparation method of the environmental protection flame retardant foamed material for offroad vehicle fuel tank includes in method and step:
(1) feedstock processing: polyethers 403, polyester 200, polyethers 635 and isocyanates are dried；
(2) weighing and proportioning: each component in synthesis material is weighed respectively by mass fraction；
(3) it prepares synthesis material: each component in synthesis material being added in reaction kettle and is reacted and is sufficiently stirred, reaction temperature
Degree is 80~100 DEG C, and mixing time is 2~3h, and synthesis material can be obtained in mixing speed 200-300r/min；
(4) it synthesizes foamed material: isocyanates being mixed with the mass ratio of synthesis material installation 1:1.5, and is reacted, can be obtained
To the environmental protection flame retardant foamed material for offroad vehicle fuel tank.
The present invention also provides a kind of environmental protection flame retardant foamed material for offroad vehicle fuel tank, it is dry in step (1) at
The temperature of reason is 50 DEG C, and the time is 6~8h.
Further, in step (4), the reaction temperature of the isocyanates and synthesis material is 120~140 DEG C, the reaction time
For 3~4h.
Further, in step (4), during isocyanates is reacted with synthesis material, with the stirring of 500~600r/min
Speed stirs the mixture of the isocyanates and synthesis material.
After the above technical solution is adopted, isocyanates of the invention and synthesis material use the mass ratio of 1:1.5, and synthesis material
Component and each component between proportion select proper so that the foamed material flame retardant property of preparation is high, intensity is high, density is high, from
And the service life of fuel tank is extended, vehicle and personal safety when having ensured burst accident, in addition, being made due to foamed material
It is environmental protection material with raw material, because without releasing to the poisonous and hazardous substance of human body.
Specific embodiment
In order that the present invention can be more clearly and readily understood, the present invention is made into one below according to specific embodiment
Step detailed description.
Embodiment one:
A kind of environmental protection flame retardant foamed material for offroad vehicle fuel tank, its raw material include isocyanates and synthesis
Material, wherein isocyanates and synthesis material press proportion by weight, isocyanates: synthesis material=1:1.5, the group that the synthesis material includes
Divide and the mass parts of each component be as follows:
403:18 parts of polyethers；
200:55 parts of polyester；
Plasticizer: 4 parts；
Catalyst: 2.8 parts；
635:15 parts of polyethers；
Fire retardant: 30 parts；
Water: 1.5 parts；
Glass fibre: 130 parts.
The plasticizer is plasticizer 3320.
The catalyst is catalyst FM-180.
The fire retardant is fire retardant TCPP.
A kind of preparation method of the environmental protection flame retardant foamed material for offroad vehicle fuel tank includes in method and step:
(3) feedstock processing: polyethers 403, polyester 200, polyethers 635 and isocyanates are dried；
(4) weighing and proportioning: each component in synthesis material is weighed respectively by mass fraction；
(3) it prepares synthesis material: each component in synthesis material being added in reaction kettle and is reacted and is sufficiently stirred, reaction temperature
Synthesis material can be obtained for 80 DEG C, mixing time 2h, mixing speed 200r/min in degree；
(4) it synthesizes foamed material: isocyanates being mixed with the mass ratio of synthesis material installation 1:1.5, and is reacted, can be obtained
To the environmental protection flame retardant foamed material for offroad vehicle fuel tank.
The temperature being dried in step (1) is 50 DEG C, time 6h.
In step (4), the reaction temperature of the isocyanates and synthesis material is 120 DEG C, reaction time 3h.
In step (4), during isocyanates is reacted with synthesis material, described in the mixing speed stirring with 500r/min
The mixture of isocyanates and synthesis material.
Embodiment two
A kind of environmental protection flame retardant foamed material for offroad vehicle fuel tank, its raw material include isocyanates and synthesis
Material, wherein isocyanates and synthesis material press proportion by weight, isocyanates: synthesis material=1:1.5, the group that the synthesis material includes
Divide and the mass parts of each component be as follows:
403:22 parts of polyethers；
200:60 parts of polyester；
Plasticizer: 4 parts；
Catalyst: 2.8 parts；
635:15 parts of polyethers；
Fire retardant: 30 parts；
Water: 1.5 parts；
Glass fibre: 130 parts.
The plasticizer is plasticizer 3320.
The catalyst is catalyst FM-180.
The fire retardant is fire retardant TCPP.
A kind of preparation method of the environmental protection flame retardant foamed material for offroad vehicle fuel tank includes in method and step:
(1) feedstock processing: polyethers 403, polyester 200, polyethers 635 and isocyanates are dried；
(2) weighing and proportioning: each component in synthesis material is weighed respectively by mass fraction；
(3) it prepares synthesis material: each component in synthesis material being added in reaction kettle and is reacted and is sufficiently stirred, reaction temperature
Synthesis material can be obtained for 90 DEG C, mixing time 2.5h, mixing speed 250r/min in degree；
(4) it synthesizes foamed material: isocyanates being mixed with the mass ratio of synthesis material installation 1:1.5, and is reacted, can be obtained
To the environmental protection flame retardant foamed material for offroad vehicle fuel tank.
The temperature being dried in step (1) is 50 DEG C, time 7h.
In step (4), the reaction temperature of the isocyanates and synthesis material is 130 DEG C, reaction time 3.5h.
In step (4), during isocyanates is reacted with synthesis material, described in the mixing speed stirring with 550r/min
The mixture of isocyanates and synthesis material.
Embodiment three
A kind of environmental protection flame retardant foamed material for offroad vehicle fuel tank, its raw material include isocyanates and synthesis
Material, wherein isocyanates and synthesis material press proportion by weight, isocyanates: synthesis material=1:1.5, the group that the synthesis material includes
Divide and the mass parts of each component be as follows:
403:25 parts of polyethers；
200:65 parts of polyester；
Plasticizer: 9 parts；
Catalyst: 3.0 parts；
635:20 parts of polyethers；
Fire retardant: 38 parts；
Water: 2.5 parts；
Glass fibre: 150 parts.
The plasticizer is plasticizer 3320.
The catalyst is catalyst FM-180.
The fire retardant is fire retardant TCPP.
A kind of preparation method of the environmental protection flame retardant foamed material for offroad vehicle fuel tank includes in method and step:
(1) feedstock processing: polyethers 403, polyester 200, polyethers 635 and isocyanates are dried；
(2) weighing and proportioning: each component in synthesis material is weighed respectively by mass fraction；
(3) it prepares synthesis material: each component in synthesis material being added in reaction kettle and is reacted and is sufficiently stirred, reaction temperature
Synthesis material can be obtained for 100 DEG C, mixing time 3h, mixing speed 300r/min in degree；
(4) it synthesizes foamed material: isocyanates being mixed with the mass ratio of synthesis material installation 1:1.5, and is reacted, can be obtained
To the environmental protection flame retardant foamed material for offroad vehicle fuel tank.
The temperature being dried in step (1) is 50 DEG C, time 8h.
In step (4), the reaction temperature of the isocyanates and synthesis material is 140 DEG C, reaction time 4h.
In step (4), during isocyanates is reacted with synthesis material, described in the mixing speed stirring with 600r/min
The mixture of isocyanates and synthesis material.
The following are a kind of flame test results of the environmental protection flame retardant foamed material for offroad vehicle fuel tank of the present invention:
Test stone requirement: the burning velocity of fire proofing should be not more than 100mm/min, distinguish if there are following situations
Test result is identified as required, and inspection result is divided into 5 grades of A, B, C, D, E:
A:(0mm/min): sample is exposed to 15S in flame, and extinguishing fire source is still unburned or sample can burn, but
Flame extinguishes before reaching the first measurement graticule, and no burning extent can be counted.
B: when tester, flame self-extinguish in 60s, and burning extent is not more than 50mm, then it is assumed that meet
Standard requirements.
C: burning speed measured value (mm/min)
When tester, flame extinguishes between the two measuring markings, and when being unsatisfactory for the 2nd article of situation, then by mark
Standard calculates burning velocity.
D: burning speed measured value (mm/min)
When tester, flame combustion reaches the second graticule, or since timing, sample long-time smoulder,
Then can in tester termination test when 20min, and record burning time and burning extent and by standard combustion rate.
E: sample has burnt in flame ignition 15s and has reached the first graticule, then it is assumed that sample is not able to satisfy burning speed
The requirement of degree.
Inspection result: A-B (0mm/min) is sent out using the environmental protection flame retardant manufactured in the present embodiment for offroad vehicle fuel tank
Foam material meets flame retardant property requirement.
Working principle of the present invention is as follows:
Isocyanates and synthesis material of the invention uses the mass ratio of 1:1.5, and between the component and each component of synthesis material
Proportion selection is proper, so that the foamed material flame retardant property of preparation is high, intensity is high, density is high, to extend making for fuel tank
With the service life, vehicle and personal safety when having ensured burst accident, in addition, the raw material that uses due to foamed material is environmentally friendly former
Material, because without releasing to the poisonous and hazardous substance of human body.
Particular embodiments described above, pair present invention solves the technical problem that, technical scheme and beneficial effects carry out
It is further described, it should be understood that the above is only a specific embodiment of the present invention, is not limited to this
Invention, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in this hair
Within bright protection scope.
Claims (8)
1. a kind of environmental protection flame retardant foamed material for offroad vehicle fuel tank, it is characterised in that: its raw material include isocyanic acid
Ester and synthesis material, wherein isocyanates and synthesis material press proportion by weight, isocyanates: synthesis material=1:1.5, the synthesis material
The mass parts of the component and each component that include are as follows:
Polyethers 403:18~25 part；
Polyester 200:55~65 part；
Plasticizer: 4~9 parts；
Catalyst: 2.8~3.0 parts；
Polyethers 635:15~20 part；
Fire retardant: 30~38 parts；
Water: 1.5~2.5 parts；
Glass fibre: 130~150 parts.
2. the environmental protection flame retardant foamed material according to claim 1 for offroad vehicle fuel tank, it is characterised in that: the increasing
Modeling agent is plasticizer 3320.
3. the environmental protection flame retardant foamed material according to claim 1 for offroad vehicle fuel tank, it is characterised in that: described to urge
Agent is catalyst FM-180.
4. the environmental protection flame retardant foamed material according to claim 1 for offroad vehicle fuel tank, it is characterised in that: the resistance
Combustion agent is fire retardant TCPP.
5. a kind of preparation of such as described in any item environmental protection flame retardant foamed materials for offroad vehicle fuel tank of Claims 1 to 4
Method, it is characterised in that: include in method and step:
(1) feedstock processing: polyethers 403, polyester 200, polyethers 635 and isocyanates are dried；
(2) weighing and proportioning: each component in synthesis material is weighed respectively by mass fraction；
(3) it prepares synthesis material: each component in synthesis material being added in reaction kettle and is reacted and is sufficiently stirred, reaction temperature is
80~100 DEG C, mixing time is 2~3h, and synthesis material can be obtained in mixing speed 200-300r/min；
(4) it synthesizes foamed material: isocyanates being mixed with the mass ratio of synthesis material installation 1:1.5, and is reacted, institute can be obtained
State the environmental protection flame retardant foamed material for offroad vehicle fuel tank.
6. the environmental protection flame retardant foamed material according to claim 5 for offroad vehicle fuel tank, it is characterised in that: step
(1) temperature being dried in is 50 DEG C, and the time is 6~8h.
7. the preparation method of the environmental protection flame retardant foamed material according to claim 5 for offroad vehicle fuel tank, feature
Be: in step (4), the reaction temperature of the isocyanates and synthesis material is 120~140 DEG C, and the reaction time is 3~4h.
8. the preparation method of the environmental protection flame retardant foamed material according to claim 4 for offroad vehicle fuel tank, feature
It is: in step (4), during isocyanates is reacted with synthesis material, institute is stirred with the mixing speed of 500~600r/min
State the mixture of isocyanates and synthesis material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810681829.0A CN109053984A (en) | 2018-06-27 | 2018-06-27 | Environmental protection flame retardant foamed material and preparation method for offroad vehicle fuel tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810681829.0A CN109053984A (en) | 2018-06-27 | 2018-06-27 | Environmental protection flame retardant foamed material and preparation method for offroad vehicle fuel tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109053984A true CN109053984A (en) | 2018-12-21 |
Family
ID=64817934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810681829.0A Pending CN109053984A (en) | 2018-06-27 | 2018-06-27 | Environmental protection flame retardant foamed material and preparation method for offroad vehicle fuel tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109053984A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106188460A (en) * | 2016-07-07 | 2016-12-07 | 扬中市天正合成材料研究中心 | A kind of sanitary ware environmental protection high flame-retardant foamed material and preparation method thereof |
| CN107446102A (en) * | 2017-06-30 | 2017-12-08 | 扬中市天正合成材料研究中心 | A kind of caravan interior trim and ceiling floor environmental protection flame retardant expanded material and preparation method thereof |
-
2018
- 2018-06-27 CN CN201810681829.0A patent/CN109053984A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106188460A (en) * | 2016-07-07 | 2016-12-07 | 扬中市天正合成材料研究中心 | A kind of sanitary ware environmental protection high flame-retardant foamed material and preparation method thereof |
| CN107446102A (en) * | 2017-06-30 | 2017-12-08 | 扬中市天正合成材料研究中心 | A kind of caravan interior trim and ceiling floor environmental protection flame retardant expanded material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107325247A (en) | A kind of secondary battery jar assembly polyurethane rings environment friendly flame-retardant expanded material and preparation method | |
| CN107474213A (en) | Thick stick environmental protection flame retardant polyurethane foam material and preparation method under a kind of bumper | |
| CN106084169A (en) | A kind of greening bark moulding environmental protection high flame-retardant foamed material and preparation method thereof | |
| CN106046298A (en) | Packing bucket environment-friendly high-flame-retardancy foam material and preparation method thereof | |
| CN106146793A (en) | A kind of hard suitcase environmental protection high flame-retardant foamed material and preparation method thereof | |
| CN107298744A (en) | A kind of low-position bumper guard environmental protection flame retardant expanded material and preparation method | |
| CN106008888A (en) | Environment-friendly high-flame-retardance polyurethane foam material for square stools and tables and chairs and preparation method of material | |
| CN107266649A (en) | Air inlet pipe assembly environmental protection flame retardant expanded material and preparation method | |
| CN106046289A (en) | Environment-friendly foam material with high flame retardance for shells of toy cars for children and method for preparing environment-friendly foam material | |
| CN107383306A (en) | A kind of mask environmental protection flame retardant polyurethane foam material and preparation method | |
| CN106008874A (en) | Environment-friendly and highly-flame-retardant foam material for goods shelf and preparation method of foam material | |
| CN109053984A (en) | Environmental protection flame retardant foamed material and preparation method for offroad vehicle fuel tank | |
| CN108997551A (en) | Hard-foam polyurethane foamed material and preparation method for light truck fuel tank | |
| CN104530353A (en) | An imitation leather composite with environmental protection and high flame retardancy features and a preparation method thereof | |
| CN107325252A (en) | A kind of air inlet pipe assembly environmental protection flame retardant polyurethane foam material and preparation method | |
| CN107298747A (en) | Polyurethane foam material for Auto Instrument desk and preparation method thereof | |
| CN107312143A (en) | A kind of bumper environmental protection flame retardant expanded material and preparation method | |
| CN107312145A (en) | A kind of combined bumper environmental protection flame retardant polyurethane foam material and preparation method | |
| CN106146794A (en) | A kind of automobile-used ceiling environmental protection high flame-retardant foamed material and preparation method thereof | |
| CN107325248A (en) | A kind of wind scooper environmental protection flame retardant polyurethane foam material and preparation method | |
| CN107383308A (en) | Bumper environmental protection flame retardant expanded material and preparation method | |
| CN107298746A (en) | A kind of mask environmental protection flame retardant expanded material and preparation method | |
| CN108727555A (en) | Environmental protection flame retardant expanded material and preparation method for pick up fuel tank | |
| CN108929420A (en) | Environmental protection flame retardant polyurethane foam material and preparation method thereof for ceiling before car | |
| CN108752559A (en) | Micro- vehicle fuel tank environmental protection flame retardant expanded material and preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181221 |
|
| RJ01 | Rejection of invention patent application after publication |