CN105176096A - Silicone rubber foam material suitable for cultural relic liner protection and preparation method of silicone rubber foam material - Google Patents
Silicone rubber foam material suitable for cultural relic liner protection and preparation method of silicone rubber foam material Download PDFInfo
- Publication number
- CN105176096A CN105176096A CN201510691068.3A CN201510691068A CN105176096A CN 105176096 A CN105176096 A CN 105176096A CN 201510691068 A CN201510691068 A CN 201510691068A CN 105176096 A CN105176096 A CN 105176096A
- Authority
- CN
- China
- Prior art keywords
- foam material
- rubber foam
- silicon rubber
- protection
- historical relic
- 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
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a silicone rubber foam material suitable for cultural relic liner protection and a preparation method of the silicone rubber foam material. The silicone rubber foam material is prepared from the following materials in parts by weight: 100 parts of liquid silicone rubber containing hydroxyl groups, 0-40 parts of a reinforcing agent, 0-10 parts of a blowing promoter, 0.2-0.6 part of an inhibitor, 0.3-0.8 part of a catalyst and 3-20 parts of hydrogen-containing silicone oil. The silicone rubber foam material does not release a harmful gas to cultural relics, and can play a blocking role on cultural relics and packaging materials; and the damages to the cultural relics caused by released substances of the packaging materials are reduced. The preparation method disclosed by the invention is controllable in condition, simple in technology and environmentally friendly.
Description
Technical field
The present invention relates to a kind of field of high polymer material processing, be specifically related to a kind of silicon rubber foam material and preparation method thereof.
Background technology
In order to protect historical relic depositing, pack, safety in transportation, need in historical relic's protection capsule casket, use the soft padding material with damping shock absorption effect, prevent the External Force Acting such as accidental fall, collision to the damage of historical relic.Current historical relic's protection capsule casket mainly adopts cotton as cushioning material.Although cotton can play certain provide protection to historical relic, the moistureproofness of cotton, flame retardant resistance, antibiont corrodibility are poor, and damping characteristics, not as rubber, is unfavorable for the long-term storage to historical relic and protection.Silicon rubber have high-low temperature resistant, resistant to chemical media, ageing-resistant, heat insulation, insulation premium properties, be widely used in the industry such as aerospace, electric and electronic, precision instrument.Silicon rubber foam also has the advantages such as light weight, physiological inertia that damping property is good, good, than the better protection against the tide of cotton, fire-retardant, antibiont corrosive nature, is desirable historical relic's protection cushioning material.
In order to preserve cultural heritage, people are finding various way always, and that historical relic and artwork are prevented preferably is stained, and reaches and minimize.Historical relic is at h substance on the one hand, manufactures wrapping material itself on the other hand and also may discharge pollutent, as organic solvent, acid, formaldehyde and other material etc.Therefore, historical relic's protection cushioning material not only self can not discharge obnoxious flavour, and plays iris action between historical relic and wrapping material, with stained to historical relic of the h substance reducing wrapping material.
The method of current acquisition silicon rubber foam has two classes usually.One class is the method for chemical foaming, and the gas normally utilizing chemical foaming agent thermal destruction to discharge forms bubble.Some chemical foaming agent decomposition can produce environmentally harmful harmful by-products, and the application of this method is subject to certain restrictions.Another kind of foaming method is Physical Foaming method: after adopting inertia pore former and rubber mix, the pore-forming through method removal inertia pore formers such as dissolveds.This method efficiency is lower, energy consumption is high, needs to consume a large amount of pore formers." a kind of super critical CO 2 technology prepares the method for silicon rubber foam material " patent application that Song Lixian etc. propose obtains the silicon rubber foam of small-bore by super critical CO 2 technology, but this technology of preparing needs special processing unit, and cost is higher.Along with country is to the attention of energy-saving and environmental protection, explore the preparation method of silicon rubber foam material low cost, efficient, environmental protection, to the exploitation of historical relic's protection and organosilicon material, apply significant.
Summary of the invention
[technical problem that will solve]
The object of the invention is to solve above-mentioned the deficiencies in the prior art, provide a kind of and be applicable to silicon rubber foam material of historical relic liner protection and preparation method thereof.This silicon rubber foam material not only self does not discharge historical relic obnoxious flavour, and can play iris action between historical relic and wrapping material, reduces stained to historical relic of the h substance of wrapping material.
[technical scheme]
In order to reach above-mentioned technique effect, the present invention takes following technical scheme:
The present invention by the organo-silicone rubber of hydroxyl and containing hydrogen silicone oil, is produced polycondensation, generates gas simultaneously and foam under the effect of catalyzer; And by formulating of recipe, can different densities be prepared and not discharge the silicon rubber foam material of obnoxious flavour.
Be applicable to a silicon rubber foam material for historical relic liner protection, it is prepared from by the material of following parts by weight:
The liquid silastic of hydroxyl 100 parts, strengthening agent 0 ~ 40 part, blowing promotor 0 ~ 10 part, 0.2 ~ 0.6 part, inhibitor, catalyzer 0.3 ~ 0.8 part, containing hydrogen silicone oil 3 ~ 20 parts.
The present invention is technical scheme further, and the apparent density of described silicon rubber foam material is 0.25 ~ 0.55g/cm
-3, compression set is less than 5%.
The present invention is technical scheme further, all containing plural activity hydroxy in each molecule of liquid silastic of described hydroxyl.
The present invention is technical scheme further, and described strengthening agent is diatomite or white carbon black.
The present invention is technical scheme further, and described blowing promotor is hydroxy silicon oil or liquid polyol.
The present invention is technical scheme further, and described inhibitor is vinyl ring body V4.
The present invention is technical scheme further, and described catalyzer is organic platinum catalyzer.
The preparation method of above-mentioned silicon rubber foam material, it comprises the following steps:
First, the liquid silastic of hydroxyl, strengthening agent weight part as above are mixed, obtains rubber master batch; Then in rubber master batch, add weight part blowing promotor as above, inhibitor, catalyzer and containing hydrogen silicone oil, after high-speed stirring is even, is poured into room temperature foaming in mould, obtains silicon rubber foam material first product; Finally this silicon rubber foam material first product sulfuration 2h at 160 DEG C, obtains described silicon rubber foam material.
The present invention will be explained below.
The present invention utilizes the liquid silastic of hydroxyl and containing hydrogen silicone oil under catalyst action, produces polycondensation, generates gas simultaneously and foams; And by formulating of recipe, the silicon rubber foam material of different densities can be prepared.Compared with traditional dissolved method, whipping agent thermolysis foaming, owing to have employed liquid silicone rubber as matrix and linking agent, this silicon rubber foam material is the generation of the objectionable impurities such as organic solvent-free, acid, formaldehyde in preparation and use procedure.Only under the preparation of the raw material of above-mentioned weight part, could obtain apparent density is 0.25 ~ 0.55g/cm
-3, the silicon rubber foam material that compression set is less than 5%.By the adjustment of the content to liquid silastic, containing hydrogen silicone oil and blowing promotor, the density obtaining silicon rubber foam material effectively can be controlled.Because matrix and linking agent all adopt liquid silicon to be starting material, this silicon rubber foam material can pass through room temperature casting, has that uniform foam cell, density are controlled, the feature of environmental protection.By mechanical property that the effect of strengthening agent is to increase silicon rubber foam material in the present invention; The effect of inhibitor is to control the reaction times, while convenient operation, is conducive to the apparent density controlling silicon rubber foam material further.
[beneficial effect]
The present invention compared with prior art, has following beneficial effect:
Silicon rubber foam material of the present invention, without the release of the objectionable impurities such as organic acid, oxidizing gas, formaldehyde, has good Long Term Contact consistency with the metal such as copper, silver, lead.Not only self do not discharge historical relic obnoxious flavour as historical relic's protection material, and can iris action be played between historical relic and wrapping material, reduce stained to historical relic of the h substance of wrapping material.
Preparation method of the present invention is compared with traditional dissolved method, whipping agent thermolysis foaming, owing to have employed liquid silicone rubber as matrix and linking agent, this silicon rubber foam material is the generation of the objectionable impurities such as organic solvent-free, acid, formaldehyde in preparation and use procedure.In addition, because matrix and linking agent all adopt liquid silicon to be starting material, this silicon rubber foam material can pass through room temperature casting, has that uniform foam cell, density are controlled, the feature of environmental protection.Preparation method's condition of the present invention is controlled, and technique is simple, and environmental protection.
Accompanying drawing explanation
Fig. 1 is the SEM figure of silicon rubber foam material prepared by the embodiment of the present invention 1;
Fig. 2 is the SEM figure of silicon rubber foam material prepared by the embodiment of the present invention 5.
Embodiment
Below in conjunction with embodiments of the invention, the invention will be further elaborated.
Embodiment 1:
Be applicable to a preparation method for the silicon rubber foam material of historical relic liner protection, concrete steps are as follows:
First, 100 part of 107 liquid silastic (viscosity 2000mPa/s), 30 parts of diatomite are mixed, obtains rubber master batch; Then in rubber master batch, add weight part 0.3 part of vinyl ring body V4 (vinyl concentration is greater than 29%), 0.4 part of organic platinum catalyzer (platinum concentration 2000PPM), 5 parts of containing hydrogen silicone oils (hydrogen number 0.7g), after high-speed stirring is even, be poured into room temperature foaming in mould, obtain silicon rubber foam material first product; Finally this silicon rubber foam material first product sulfuration 2h at 160 DEG C, obtains silicon rubber foam material as shown in Figure 1.The performance of silicon rubber foam material is in table 1.
Embodiment 2
Be applicable to a preparation method for the silicon rubber foam material of historical relic liner protection, concrete steps are as follows: first, 100 part of 107 liquid silastic (viscosity 2000mPa/s), 10 parts of white carbon blacks mixed, obtain rubber master batch; Then in rubber master batch, add weight part 0.3 part of vinyl ring body V4 (vinyl concentration is greater than 29%), 0.4 part of organic platinum catalyzer (platinum concentration 2000PPM), 5 parts of containing hydrogen silicone oils (hydrogen number 0.7g), after high-speed stirring is even, be poured into room temperature foaming in mould, obtain silicon rubber foam material first product; Finally this silicon rubber foam material first product sulfuration 2h at 160 DEG C, obtains described silicon rubber foam material.The performance of silicon rubber foam material is in table 1.
Embodiment 3
Be applicable to a preparation method for the silicon rubber foam material of historical relic liner protection, concrete steps are as follows: first, 100 part of 108 liquid silastic (viscosity 2000mPa/s), 10 parts of white carbon blacks mixed, obtain rubber master batch; Then in rubber master batch, add weight part 0.3 part of vinyl ring body V4 (vinyl concentration is greater than 29%), 0.4 part of organic platinum catalyzer (platinum concentration 2000PPM), 5 parts of containing hydrogen silicone oils (hydrogen number 0.7g), after high-speed stirring is even, be poured into room temperature foaming in mould, obtain silicon rubber foam material first product; Finally this silicon rubber foam material first product sulfuration 2h at 160 DEG C, obtains described silicon rubber foam material.The performance of silicon rubber foam material is in table 1.
Embodiment 4
Be applicable to a preparation method for the silicon rubber foam material of historical relic liner protection, concrete steps are as follows: first, 100 part of 108 liquid silastic (viscosity 2000mPa/s), 20 parts of diatomite mixed, obtain rubber master batch; Then in rubber master batch, add weight part 0.3 part of vinyl ring body V4 (vinyl concentration is greater than 29%), 2 parts of hydroxy silicon oils, 0.4 part of organic platinum catalyzer (platinum concentration 2000PPM), 5 parts of containing hydrogen silicone oils (hydrogen number 0.7g), after high-speed stirring is even, be poured into room temperature foaming in mould, obtain silicon rubber foam material first product; Finally this silicon rubber foam material first product sulfuration 2h at 160 DEG C, obtains described silicon rubber foam material.The performance of silicon rubber foam material is in table 1.
Embodiment 5
Be applicable to a preparation method for the silicon rubber foam material of historical relic liner protection, concrete steps are as follows: first, 100 part of 108 liquid silastic (viscosity 2000mPa/s), 20 parts of diatomite mixed, obtain rubber master batch; Then in rubber master batch, add weight part 0.3 part of vinyl ring body V4 (vinyl concentration is greater than 29%), 4 parts of polyvalent alcohols, 0.4 part of organic platinum catalyzer (platinum concentration 2000PPM), 6 parts of containing hydrogen silicone oils (hydrogen number 0.7g), after high-speed stirring is even, be poured into room temperature foaming in mould, obtain silicon rubber foam material first product; Finally this silicon rubber foam material first product sulfuration 2h at 160 DEG C, obtains silicon rubber foam material as shown in Figure 2.The performance of silicon rubber foam material is in table 1.
Embodiment 6
Be applicable to a preparation method for the silicon rubber foam material of historical relic liner protection, concrete steps are as follows: first, 100 part of 108 liquid silastic (viscosity 2000mPa/s), 20 parts of diatomite mixed, obtain rubber master batch; Then in rubber master batch, add weight part 0.3 part of vinyl ring body V4 (vinyl concentration is greater than 29%), 5 parts of polyvalent alcohols, 0.4 part of organic platinum catalyzer (platinum concentration 2000PPM), 8 parts of containing hydrogen silicone oils (hydrogen number 0.7g), after high-speed stirring is even, be poured into room temperature foaming in mould, obtain silicon rubber foam material first product; Finally this silicon rubber foam material first product sulfuration 2h at 160 DEG C, obtains described silicon rubber foam material.The performance of silicon rubber foam material is in table 1.
Embodiment 7
A kind of preparation method being applicable to the silicon rubber foam material of historical relic liner protection, concrete steps are as follows: first, using 100 part of 107 liquid silastic (viscosity 2000mPa/s) as rubber master batch, add weight part 0.3 part of vinyl ring body V4 (vinyl concentration is greater than 29%), 0.4 part of organic platinum catalyzer (platinum concentration 2000PPM), 5 parts of containing hydrogen silicone oils (hydrogen number 0.7g) wherein, after high-speed stirring is even, be poured into room temperature foaming in mould, obtain silicon rubber foam material first product; Finally this silicon rubber foam material first product sulfuration 2h at 160 DEG C, obtains described silicon rubber foam material.The performance of silicon rubber foam material is in table 1.
Embodiment 8
A kind of preparation method being applicable to the silicon rubber foam material of historical relic liner protection, concrete steps are as follows: first, using 100 part of 108 liquid silastic (viscosity 2000mPa/s) as rubber master batch, add weight part 0.3 part of vinyl ring body V4 (vinyl concentration is greater than 29%), 0.4 part of organic platinum catalyzer (platinum concentration 2000PPM), 5 parts of containing hydrogen silicone oils (hydrogen number 0.7g) wherein, after high-speed stirring is even, be poured into room temperature foaming in mould, obtain silicon rubber foam material first product; Finally this silicon rubber foam material first product sulfuration 2h at 160 DEG C, obtains described silicon rubber foam material.The performance of silicon rubber foam material is in table 1.
The performance of the silicon rubber foam material of above-described embodiment 1 ~ 8 is as shown in table 1:
The silicon rubber foam formula that table 1 embodiment 1 ~ 8 prepares and performance
As can be seen from Table 1, the apparent density of silicon rubber foam material that the embodiment of the present invention 1 ~ 8 prepares is 0.25 ~ 0.55g/cm
-3, compression set is less than 5%.Because itself and metallic copper, lead, iron consistency are all fine, that is the silicon rubber foam material that the embodiment of the present invention 1 ~ 8 prepares can have good Long Term Contact with metals such as copper, silver, lead, the therefore release of silicon rubber foam thing objectionable impurities for preparing of preparation method of the present invention.
Although with reference to explanatory embodiment of the present invention, invention has been described here, above-described embodiment is only the present invention's preferably embodiment, embodiments of the present invention are not restricted to the described embodiments, should be appreciated that, those skilled in the art can design a lot of other amendment and embodiment, these amendments and embodiment will drop within spirit disclosed in the present application and spirit.
Claims (8)
1. be applicable to a silicon rubber foam material for historical relic liner protection, it is characterized in that it is prepared from by the material of following parts by weight:
The liquid silastic of hydroxyl 100 parts, strengthening agent 0 ~ 40 part, blowing promotor 0 ~ 10 part, 0.2 ~ 0.6 part, inhibitor, catalyzer 0.3 ~ 0.8 part, containing hydrogen silicone oil 3 ~ 20 parts.
2. the silicon rubber foam material being applicable to the protection of historical relic liner according to claim 1, is characterized in that the apparent density of described silicon rubber foam material is 0.25 ~ 0.55g/cm
-3, compression set is less than 5%.
3. the silicon rubber foam material being applicable to the protection of historical relic liner according to claim 1, is characterized in that in each molecule of the liquid silastic of described hydroxyl all containing plural activity hydroxy.
4. the silicon rubber foam material being applicable to the protection of historical relic liner according to claim 1, is characterized in that described strengthening agent is diatomite or white carbon black.
5. the silicon rubber foam material being applicable to the protection of historical relic liner according to claim 1, is characterized in that described blowing promotor is hydroxy silicon oil or liquid polyol.
6. the silicon rubber foam material being applicable to the protection of historical relic liner according to claim 1, is characterized in that described inhibitor is vinyl ring body V4.
7. the silicon rubber foam material being applicable to the protection of historical relic liner according to claim 1, is characterized in that described catalyzer is organic platinum catalyzer.
8. a preparation method for the silicon rubber foam material according to any one of claim 1 ~ 7, is characterized in that it comprises the following steps:
First, the liquid silastic of hydroxyl, strengthening agent are mixed by weight part according to claim 1, obtains rubber master batch; Then in rubber master batch, add weight part blowing promotor as claimed in claim 1, inhibitor, catalyzer and containing hydrogen silicone oil, after high-speed stirring is even, is poured into room temperature foaming in mould, obtains silicon rubber foam material first product; Finally this silicon rubber foam material first product sulfuration 2h at 160 DEG C, obtains described silicon rubber foam material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510691068.3A CN105176096A (en) | 2015-10-22 | 2015-10-22 | Silicone rubber foam material suitable for cultural relic liner protection and preparation method of silicone rubber foam material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510691068.3A CN105176096A (en) | 2015-10-22 | 2015-10-22 | Silicone rubber foam material suitable for cultural relic liner protection and preparation method of silicone rubber foam material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105176096A true CN105176096A (en) | 2015-12-23 |
Family
ID=54898558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510691068.3A Pending CN105176096A (en) | 2015-10-22 | 2015-10-22 | Silicone rubber foam material suitable for cultural relic liner protection and preparation method of silicone rubber foam material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105176096A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105542471A (en) * | 2016-02-17 | 2016-05-04 | 厦门市豪尔新材料股份有限公司 | Release-type high-energy adhesive product and preparation method thereof |
| CN107141806A (en) * | 2017-06-06 | 2017-09-08 | 北京化工大学 | Intrinsic flame-proof silicon rubber foamed material and its preparation method and application |
| CN109627767A (en) * | 2018-11-28 | 2019-04-16 | 刘萍 | A kind of technique and method preparing flame retardant silica gel foam using liquid silica gel |
| CN110256851A (en) * | 2019-06-10 | 2019-09-20 | 天津大学 | A kind of fannings material silica gel composite coaster and preparation method thereof |
| CN111500067A (en) * | 2020-05-29 | 2020-08-07 | 长兴特殊材料（珠海）有限公司 | Porous organosilicon elastic microsphere and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104312168A (en) * | 2014-11-07 | 2015-01-28 | 中蓝晨光化工研究设计院有限公司 | Porous liquid room temperature vulcanization foam silicone rubber and preparation method thereof |
| CN104530712A (en) * | 2015-01-22 | 2015-04-22 | 中国工程物理研究院化工材料研究所 | Small pore diameter silicone rubber sponge and preparation method thereof |
| CN104774473A (en) * | 2015-04-27 | 2015-07-15 | 中国工程物理研究院化工材料研究所 | Room-temperature vulcanized phenyl silicone rubber foam and preparation method |
-
2015
- 2015-10-22 CN CN201510691068.3A patent/CN105176096A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104312168A (en) * | 2014-11-07 | 2015-01-28 | 中蓝晨光化工研究设计院有限公司 | Porous liquid room temperature vulcanization foam silicone rubber and preparation method thereof |
| CN104530712A (en) * | 2015-01-22 | 2015-04-22 | 中国工程物理研究院化工材料研究所 | Small pore diameter silicone rubber sponge and preparation method thereof |
| CN104774473A (en) * | 2015-04-27 | 2015-07-15 | 中国工程物理研究院化工材料研究所 | Room-temperature vulcanized phenyl silicone rubber foam and preparation method |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105542471A (en) * | 2016-02-17 | 2016-05-04 | 厦门市豪尔新材料股份有限公司 | Release-type high-energy adhesive product and preparation method thereof |
| CN107141806A (en) * | 2017-06-06 | 2017-09-08 | 北京化工大学 | Intrinsic flame-proof silicon rubber foamed material and its preparation method and application |
| CN107141806B (en) * | 2017-06-06 | 2020-07-10 | 北京化工大学 | Intrinsic flame-retardant silicone rubber foam material and preparation method and application thereof |
| CN109627767A (en) * | 2018-11-28 | 2019-04-16 | 刘萍 | A kind of technique and method preparing flame retardant silica gel foam using liquid silica gel |
| CN110256851A (en) * | 2019-06-10 | 2019-09-20 | 天津大学 | A kind of fannings material silica gel composite coaster and preparation method thereof |
| CN110256851B (en) * | 2019-06-10 | 2021-09-21 | 天津大学 | Broken tea silica gel composite cup mat and preparation method thereof |
| CN111500067A (en) * | 2020-05-29 | 2020-08-07 | 长兴特殊材料（珠海）有限公司 | Porous organosilicon elastic microsphere and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105176096A (en) | Silicone rubber foam material suitable for cultural relic liner protection and preparation method of silicone rubber foam material | |
| CN104530712B (en) | A kind of small-bore silicone sponge and preparation method | |
| KR20160147872A (en) | Cobalt-based fischer-tropsch synthesis catalyst coated with mesoporous materials and preparation method therefor | |
| CN105131237A (en) | Preparation method for plant oil-based rigid polyurethane foam plastics by all-water foaming | |
| CN104888774A (en) | Rare earth element-doped hydrotalcite-like precursor loading ruthenium ammonia synthetic catalyst | |
| CN102633529A (en) | Foam aerated concrete and manufacturing method thereof | |
| CN106751906B (en) | Preparation method with controllable multiple dimensioned pore structure silicon rubber foam | |
| CN105647189A (en) | Organic foaming silicone rubber | |
| CN104479092A (en) | Low-density all-water open-cell hard polyurethane foam and preparation method thereof | |
| CN103319678A (en) | Polyurethane rigid foam thermal-insulation material for water tank of solar water heater | |
| CN105218781A (en) | A kind of preparation method of urethane foam insulation fire retardant material | |
| CN103342792A (en) | Polyurethane rigid foam organic fireproof heat preservation material for solar water tank | |
| CN103087345B (en) | Preparation method of phenolic foam | |
| CN110229304B (en) | Flame-retardant graphene polyurethane composite foam material and preparation method thereof | |
| CN109776847B (en) | Low-dielectric poly (arylene ether nitrile) foam material with bimodal cell structure, preparation method and application | |
| CN109942029A (en) | The universal method of ultra-thin porous nanometer sheet is assembled using metal oxide quantum dot | |
| CN112175158B (en) | Refrigerator, hard polyurethane foam and preparation method of hard polyurethane foam | |
| CN109338143A (en) | A kind of closed-cell aluminum foam without thickening preparation method | |
| CN102194532A (en) | Preparation method of compound powder of boron carbide and carbon | |
| CN104403263A (en) | Toughened and reinforced phenolic foam plate | |
| CN113604044B (en) | Flame-retardant polyimide foam material and preparation method and application thereof | |
| CN107602868B (en) | Rosin-based epoxy foam thermal insulation material and preparation method thereof | |
| CN114951662A (en) | Method for preparing high-strength porous titanium alloy material | |
| CN110804202A (en) | Open cell polyurethane foam | |
| CN115386228A (en) | Novel silicon rubber foam material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151223 |
|
| RJ01 | Rejection of invention patent application after publication |