CN108587126A - A kind of preparation method of alloy mold glue - Google Patents
A kind of preparation method of alloy mold glue Download PDFInfo
- Publication number
- CN108587126A CN108587126A CN201810526386.8A CN201810526386A CN108587126A CN 108587126 A CN108587126 A CN 108587126A CN 201810526386 A CN201810526386 A CN 201810526386A CN 108587126 A CN108587126 A CN 108587126A
- Authority
- CN
- China
- Prior art keywords
- parts
- catalyst
- preparation
- weight
- inhibitor
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/08—Polyurethanes from polyethers
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of preparation methods of alloy mold glue, include the following steps：S1, the raw material for preparing following parts by weight：30~40 parts of fume colloidal silica, 30~40 parts of polyethylene glycol, 20~35 parts of silicon tetrachloride, 20~30 parts of methyl vinyl silicone rubber, 18~25 parts of diisocyanate, 15~22 parts of inhibitor, 15~22 parts of catalyst, 3~8 parts of zinc stearate, 3~8 parts of crosslinking agent, 2~4 parts of diethylenetriamine, surplus are deionized water；S2, the fume colloidal silica of the above parts by weight, polyethylene glycol, silicon tetrachloride, diisocyanate and diethylenetriamine are sequentially placed into reaction kettle; it is filled with nitrogen protection simultaneously; set temperature is 60~70 DEG C, stirs 50~70min with 120~150r/min, obtains mixture A.Preparation process of the present invention is simple, has the advantages that oil-tight, hardness is high, percent thermal shrinkage is low and transparent good, and extends the service life of mold.
Description
Technical field
The present invention relates to mold glue technical field more particularly to a kind of preparation methods of alloy mold glue.
Background technology
Silica gel dedicated for production technology product mold is known as mold glue, generally uses room temperature vulcanized silicone rubber (abbreviation RTV)
Manufacture.RTV is a kind of macromolecular elastomer, it is using silicon atom and oxygen atom as the synthetic material of skeleton, on each silicon atom
It is a kind of fibrous polymer polymer with Si-O-Si chain belts containing 1~2 organic group (mainly methyl).Cause
This, RTV has the following properties that：It is good chemical stability, nontoxic, non-corrosive；Good fluidity can be full of mold automatically；It can
Curingprocess rate is controlled, is vulcanized under room temperature normal pressure, good release property easy to operation；Simulation quality is strong, and decorative pattern is true to nature；Molding speed
Soon, it can be made into mold in general 20 hours.The mold used at present is mainly by flexible PVC plastic cement and liquid chamber temperature vulcanizable silicone rubber
Two kinds of glue (RTV).Wherein flexible PVC especially cannot clearly show the original style and features of stone material because the material is soft；Though and RTV
Have many advantages, such as that chemical stability is good, non-corrosive, flowing is acted charitably, but RTV mold percent thermal shrinkages are larger, can influence cultural stone pattern
The fineness and appearance of decorations can be impacted because the conditions such as extraneous temperature, humidity control the improper apparent colour to product.It is high
Under warm super-humid conditions, the mould strength of traditional existing mold glue manufacture is relatively low, causes die life shorter, percent thermal shrinkage compared with
Greatly, dimensional stability is poor.Therefore, we have proposed a kind of preparation methods of alloy mold glue for solving the above problems.
Invention content
It is relatively low the purpose of the present invention is to solve intensity exists in the prior art, cause die life shorter, heat
Shrinking percentage is larger, the poor disadvantage of dimensional stability, and a kind of preparation method of the alloy mold glue proposed.
A kind of preparation method of alloy mold glue, includes the following steps：
S1, the raw material for preparing following parts by weight：30~40 parts of fume colloidal silica, 30~40 parts of polyethylene glycol, silicon tetrachloride 20
~35 parts, 20~30 parts of methyl vinyl silicone rubber, 18~25 parts of diisocyanate, 15~22 parts of inhibitor, catalyst 15~
22 parts, 3~8 parts of zinc stearate, 3~8 parts of crosslinking agent, 2~4 parts of diethylenetriamine, surplus be deionized water；
S2, by the fume colloidal silica of the above parts by weight, polyethylene glycol, silicon tetrachloride, diisocyanate and diethylenetriamine according to
Secondary to be put into reaction kettle, while being filled with nitrogen protection, set temperature is 60~70 DEG C, with 120~150r/min stirrings 50~
70min obtains mixture A；
S3, the methyl vinyl silicone rubber of the above parts by weight, inhibitor, catalyst, zinc stearate, crosslinking agent are added to mixing
In object A, temperature is increased to 70~90 DEG C, 3~5h is stirred to react, after the completion of reaction cooled to room temperature, collects out material,
And by itself and deionized water 3-4 in mass ratio:1, it is uniformly mixed and is put into blender, 1~2h is stirred with 250~320r/min,
Obtain mixture B；
S4, it will be poured after mixture B vacuumizing and defoamings, first cure 20~30min at 120~150 DEG C, then at 70~90 DEG C
Cure 15~20min, then required Addition-type mold rubber is prepared.
Preferably, in the S1, prepare the raw material of following parts by weight：32~38 parts of fume colloidal silica, polyethylene glycol 32
~38 parts, 25~30 parts of silicon tetrachloride, 22~28 parts of methyl vinyl silicone rubber, 20~23 parts of diisocyanate, inhibitor 17
~20 parts, 17~20 parts of catalyst, 4~7 parts of zinc stearate, 4~7 parts of crosslinking agent, 2.5~3.5 parts of diethylenetriamine, surplus be
Deionized water.
Preferably, in the S1, prepare the raw material of following parts by weight：35 parts of fume colloidal silica, 35 parts of polyethylene glycol, four
28 parts of silicon chloride, 25 parts of methyl vinyl silicone rubber, 22 parts of diisocyanate, 19 parts of inhibitor, 19 parts of catalyst, zinc stearate
6 parts, 6 parts of crosslinking agent, 3 parts of diethylenetriamine, surplus be deionized water.
Preferably, in the S3, inhibitor 3,5- dimethyl -1- hexin -3- alcohol or 2- propine -1- alcohol, crosslinking agent are
Methyl mixing ketoxime.
Preferably, in the S3, catalyst is Karst platinum catalyst, and platinum content is 2800~3200pmm.
Preferably, in the S4, it is 0.02~0.06MPa to be evacuated to vacuum degree.
In the present invention, a kind of preparation method preparation process of alloy mold glue is simple, and materials are reasonable, match science,
Compared with the prior art, present invention gained molding sealing rubber die glue is with oil-tight, hardness is high, percent thermal shrinkage is low and transparent good
Advantage, and it is obtained for a degree of enhancing in terms of obtained alloy mold glue heat resistance and mechanical strength, it improves
The decorative pattern fineness and appearance of manufactured product, improve the dimensional stability of mold, can extend the service life of mold, are worth
It promotes.
Specific implementation mode
The present invention is made further to explain with reference to specific embodiment.
Embodiment one
A kind of preparation method of alloy mold glue proposed by the present invention, includes the following steps：
S1, the raw material for preparing following parts by weight：30 parts of fume colloidal silica, 30 parts of polyethylene glycol, 20 parts of silicon tetrachloride, methyl second
20 parts of alkenyl silicon rubber, 18 parts of diisocyanate, 15 parts of inhibitor, 15 parts of catalyst, 3 parts of zinc stearate, 3 parts of crosslinking agent, two
2 parts of ethylene triamine, surplus are deionized water；
S2, by the fume colloidal silica of the above parts by weight, polyethylene glycol, silicon tetrachloride, diisocyanate and diethylenetriamine according to
It is secondary to be put into reaction kettle, while it being filled with nitrogen protection, set temperature is 60 DEG C, stirs 50min with 120r/min, obtains mixture
A；
S3, the methyl vinyl silicone rubber of the above parts by weight, inhibitor, catalyst, zinc stearate, crosslinking agent are added to mixing
In object A, increase temperature to 70 DEG C, be stirred to react 3h, after the completion of reaction cooled to room temperature, collect out material, and by its
With deionized water in mass ratio 3:1, it is uniformly mixed and is put into blender, 1h is stirred with 250r/min, obtains mixture B, wherein
Inhibitor is 3,5- dimethyl -1- hexin -3- alcohol or 2- propine -1- alcohol, and crosslinking agent is methyl mixing ketoxime, and catalyst is to block this
Special platinum catalyst, platinum content are 2800pmm；
S4, it will be poured after mixture B vacuumizing and defoamings, it is 0.02MPa to be evacuated to vacuum degree, is first cured at 120 DEG C
20min, then cure 15min at 70 DEG C, then required Addition-type mold rubber is prepared.
Embodiment two
A kind of preparation method of alloy mold glue proposed by the present invention, includes the following steps：
S1, the raw material for preparing following parts by weight：32 parts of fume colloidal silica, 32 parts of polyethylene glycol, 24 parts of silicon tetrachloride, methyl second
22 parts of alkenyl silicon rubber, 20 parts of diisocyanate, 17 parts of inhibitor, 17 parts of catalyst, 4 parts of zinc stearate, 4 parts of crosslinking agent, two
2.5 parts of ethylene triamine, surplus are deionized water；
S2, by the fume colloidal silica of the above parts by weight, polyethylene glycol, silicon tetrachloride, diisocyanate and diethylenetriamine according to
It is secondary to be put into reaction kettle, while it being filled with nitrogen protection, set temperature is 62 DEG C, stirs 55min with 128r/min, obtains mixture
A；
S3, the methyl vinyl silicone rubber of the above parts by weight, inhibitor, catalyst, zinc stearate, crosslinking agent are added to mixing
In object A, temperature is increased to 75 DEG C, is stirred to react 3.5h, after the completion of reaction cooled to room temperature, collect out material, and will
Itself and deionized water in mass ratio 3.2:1, it is uniformly mixed and is put into blender, 1.2h is stirred with 267r/min, obtains mixture
B, wherein inhibitor are 3,5- dimethyl -1- hexin -3- alcohol or 2- propine -1- alcohol, and crosslinking agent is methyl mixing ketoxime, catalyst
For Karst platinum catalyst, platinum content is 2900pmm；
S4, it will be poured after mixture B vacuumizing and defoamings, it is 0.03MPa to be evacuated to vacuum degree, is first cured at 128 DEG C
22min, then cure 16min at 75 DEG C, then required Addition-type mold rubber is prepared.
Embodiment three
A kind of preparation method of alloy mold glue proposed by the present invention, includes the following steps：
S1, the raw material for preparing following parts by weight：35 parts of fume colloidal silica, 35 parts of polyethylene glycol, 28 parts of silicon tetrachloride, methyl second
25 parts of alkenyl silicon rubber, 22 parts of diisocyanate, 19 parts of inhibitor, 19 parts of catalyst, 6 parts of zinc stearate, 6 parts of crosslinking agent, two
3 parts of ethylene triamine, surplus are deionized water；
S2, by the fume colloidal silica of the above parts by weight, polyethylene glycol, silicon tetrachloride, diisocyanate and diethylenetriamine according to
It is secondary to be put into reaction kettle, while it being filled with nitrogen protection, set temperature is 65 DEG C, stirs 60min with 135r/min, obtains mixture
A；
S3, the methyl vinyl silicone rubber of the above parts by weight, inhibitor, catalyst, zinc stearate, crosslinking agent are added to mixing
In object A, increase temperature to 80 DEG C, be stirred to react 4h, after the completion of reaction cooled to room temperature, collect out material, and by its
With deionized water in mass ratio 3.5:1, it is uniformly mixed and is put into blender, 1.5h is stirred with 285r/min, obtains mixture B,
Wherein inhibitor is 3,5- dimethyl -1- hexin -3- alcohol or 2- propine -1- alcohol, and crosslinking agent is methyl mixing ketoxime, and catalyst is
Karst platinum catalyst, platinum content are 3000pmm；
S4, it will be poured after mixture B vacuumizing and defoamings, it is 0.04MPa to be evacuated to vacuum degree, is first cured at 135 DEG C
25min, then cure 18min at 80 DEG C, then required Addition-type mold rubber is prepared.
Example IV
A kind of preparation method of alloy mold glue proposed by the present invention, includes the following steps：
S1, the raw material for preparing following parts by weight：38 parts of fume colloidal silica, 38 parts of polyethylene glycol, 31 parts of silicon tetrachloride, methyl second
28 parts of alkenyl silicon rubber, 23 parts of diisocyanate, 20 parts of inhibitor, 20 parts of catalyst, 7 parts of zinc stearate, 7 parts of crosslinking agent, two
3.5 parts of ethylene triamine, surplus are deionized water；
S2, by the fume colloidal silica of the above parts by weight, polyethylene glycol, silicon tetrachloride, diisocyanate and diethylenetriamine according to
It is secondary to be put into reaction kettle, while it being filled with nitrogen protection, set temperature is 68 DEG C, stirs 65min with 152r/min, obtains mixture
A；
S3, the methyl vinyl silicone rubber of the above parts by weight, inhibitor, catalyst, zinc stearate, crosslinking agent are added to mixing
In object A, temperature is increased to 75 DEG C, is stirred to react 4.5h, after the completion of reaction cooled to room temperature, collect out material, and will
Itself and deionized water in mass ratio 3.8:1, it is uniformly mixed and is put into blender, 1.2h is stirred with 302r/min, obtains mixture
B, wherein inhibitor are 3,5- dimethyl -1- hexin -3- alcohol or 2- propine -1- alcohol, and crosslinking agent is methyl mixing ketoxime, catalyst
For Karst platinum catalyst, platinum content is 3100pmm；
S4, it will be poured after mixture B vacuumizing and defoamings, it is 0.05MPa to be evacuated to vacuum degree, is first cured at 142 DEG C
28min, then cure 19min at 85 DEG C, then required Addition-type mold rubber is prepared.
Embodiment five
A kind of preparation method of alloy mold glue proposed by the present invention, includes the following steps：
S1, the raw material for preparing following parts by weight：40 parts of fume colloidal silica, 40 parts of polyethylene glycol, 35 parts of silicon tetrachloride, methyl second
30 parts of alkenyl silicon rubber, 25 parts of diisocyanate, 22 parts of inhibitor, 22 parts of catalyst, 8 parts of zinc stearate, 8 parts of crosslinking agent, two
4 parts of ethylene triamine, surplus are deionized water；
S2, by the fume colloidal silica of the above parts by weight, polyethylene glycol, silicon tetrachloride, diisocyanate and diethylenetriamine according to
It is secondary to be put into reaction kettle, while it being filled with nitrogen protection, set temperature is 70 DEG C, stirs 70min with 150r/min, obtains mixture
A；
S3, the methyl vinyl silicone rubber of the above parts by weight, inhibitor, catalyst, zinc stearate, crosslinking agent are added to mixing
In object A, increase temperature to 90 DEG C, be stirred to react 5h, after the completion of reaction cooled to room temperature, collect out material, and by its
With deionized water in mass ratio 4:1, it is uniformly mixed and is put into blender, 2h is stirred with 320r/min, obtains mixture B, wherein
Inhibitor is 3,5- dimethyl -1- hexin -3- alcohol or 2- propine -1- alcohol, and crosslinking agent is methyl mixing ketoxime, and catalyst is to block this
Special platinum catalyst, platinum content are 3200pmm；
S4, it will be poured after mixture B vacuumizing and defoamings, it is 0.06MPa to be evacuated to vacuum degree, is first cured at 150 DEG C
30min, then cure 20min at 90 DEG C, then required Addition-type mold rubber is prepared.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of preparation method of alloy mold glue, which is characterized in that include the following steps：
S1, the raw material for preparing following parts by weight：30~40 parts of fume colloidal silica, 30~40 parts of polyethylene glycol, silicon tetrachloride 20
~35 parts, 20~30 parts of methyl vinyl silicone rubber, 18~25 parts of diisocyanate, 15~22 parts of inhibitor, catalyst 15~
22 parts, 3~8 parts of zinc stearate, 3~8 parts of crosslinking agent, 2~4 parts of diethylenetriamine, surplus be deionized water；
S2, by the fume colloidal silica of the above parts by weight, polyethylene glycol, silicon tetrachloride, diisocyanate and diethylenetriamine according to
Secondary to be put into reaction kettle, while being filled with nitrogen protection, set temperature is 60~70 DEG C, with 120~150r/min stirrings 50~
70min obtains mixture A；
S3, the methyl vinyl silicone rubber of the above parts by weight, inhibitor, catalyst, zinc stearate, crosslinking agent are added to mixing
In object A, temperature is increased to 70~90 DEG C, 3~5h is stirred to react, after the completion of reaction cooled to room temperature, collects out material,
And by itself and deionized water 3-4 in mass ratio:1, it is uniformly mixed and is put into blender, 1~2h is stirred with 250~320r/min,
Obtain mixture B；
S4, it will be poured after mixture B vacuumizing and defoamings, first cure 20~30min at 120~150 DEG C, then at 70~90 DEG C
Cure 15~20min, then required Addition-type mold rubber is prepared.
2. a kind of preparation method of alloy mold glue according to claim 1, which is characterized in that in the S1, prepare with
The raw material of lower parts by weight：32~38 parts of fume colloidal silica, 32~38 parts of polyethylene glycol, 25~30 parts of silicon tetrachloride, methyl second
22~28 parts of alkenyl silicon rubber, 20~23 parts of diisocyanate, 17~20 parts of inhibitor, 17~20 parts of catalyst, zinc stearate 4
~7 parts, 4~7 parts of crosslinking agent, 2.5~3.5 parts of diethylenetriamine, surplus be deionized water.
3. a kind of preparation method of alloy mold glue according to claim 1, which is characterized in that in the S1, prepare with
The raw material of lower parts by weight：35 parts of fume colloidal silica, 35 parts of polyethylene glycol, 28 parts of silicon tetrachloride, methyl vinyl silicone rubber 25
Part, 22 parts of diisocyanate, 19 parts of inhibitor, 19 parts of catalyst, 6 parts of zinc stearate, 6 parts of crosslinking agent, 3 parts of diethylenetriamine,
Surplus is deionized water.
4. a kind of preparation method of alloy mold glue according to claim 1, which is characterized in that in the S3, inhibitor
For 3,5- dimethyl -1- hexin -3- alcohol or 2- propine -1- alcohol, crosslinking agent is methyl mixing ketoxime.
5. a kind of preparation method of alloy mold glue according to claim 1, which is characterized in that in the S3, catalyst
For Karst platinum catalyst, platinum content is 2800~3200pmm.
6. a kind of preparation method of alloy mold glue according to claim 1, which is characterized in that in the S4, vacuumize
It is 0.02~0.06MPa to vacuum degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810526386.8A CN108587126A (en) | 2018-05-29 | 2018-05-29 | A kind of preparation method of alloy mold glue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810526386.8A CN108587126A (en) | 2018-05-29 | 2018-05-29 | A kind of preparation method of alloy mold glue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108587126A true CN108587126A (en) | 2018-09-28 |
Family
ID=63629423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810526386.8A Pending CN108587126A (en) | 2018-05-29 | 2018-05-29 | A kind of preparation method of alloy mold glue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108587126A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103756332A (en) * | 2013-12-26 | 2014-04-30 | 惠州市永卓科技有限公司 | Addition-type mold rubber and preparation method thereof |
| CN106633815A (en) * | 2016-10-07 | 2017-05-10 | 常州创索新材料科技有限公司 | Preparation method for mould glue |
| CN106995679A (en) * | 2017-04-14 | 2017-08-01 | 安徽神舟飞船胶业有限公司 | A kind of neutral transparent structure glue formula and its production technology |
-
2018
- 2018-05-29 CN CN201810526386.8A patent/CN108587126A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103756332A (en) * | 2013-12-26 | 2014-04-30 | 惠州市永卓科技有限公司 | Addition-type mold rubber and preparation method thereof |
| CN106633815A (en) * | 2016-10-07 | 2017-05-10 | 常州创索新材料科技有限公司 | Preparation method for mould glue |
| CN106995679A (en) * | 2017-04-14 | 2017-08-01 | 安徽神舟飞船胶业有限公司 | A kind of neutral transparent structure glue formula and its production technology |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107892895A (en) | A kind of preparation method of modified silane polyethers glue | |
| CN109517364A (en) | A kind of colour ETPU sole and preparation method thereof | |
| CN108587126A (en) | A kind of preparation method of alloy mold glue | |
| CN102267208A (en) | Preparation method for rubber mold for preparing artificial stone | |
| CN114393852A (en) | Preparation method of latex bead heat-insulation gloves | |
| CN108048016A (en) | A kind of modified silane polyethers glue | |
| CN106433458A (en) | Color modified waterproof coating | |
| CN110330654A (en) | A kind of methyl vinyl silicone rubber and its application | |
| CN107383699A (en) | A kind of computer casing special plastic material and preparation method thereof | |
| CN109679349A (en) | A kind of manufacture craft of transparent rubber sole | |
| CN109429782A (en) | A kind of gas permeability flowerpot and its manufacture craft with sand production | |
| CN108912797A (en) | A kind of environmental protection water-proof putty powder and preparation method thereof | |
| CN114437418A (en) | High-performance water-swelling rubber composite material and preparation method thereof | |
| CN113150482A (en) | Preparation method of high-strength acrylic plate | |
| CN107759133A (en) | A kind of anti-aging artificial quartz stone plate and preparation method thereof | |
| CN111087825A (en) | Production method of slush molding silicone rubber artware | |
| CN112645650A (en) | Manufacturing method of environment-friendly stone-like material | |
| CN106278042B (en) | A kind of one-pass molding embossment | |
| CN112322044A (en) | Preparation method of silicone rubber lost wax mould for artware with complex shape | |
| CN112831145A (en) | High-strength high-light-transmittance acrylic plate and preparation method thereof | |
| CN106146857B (en) | Preparation method of carboxyl-terminated liquid fluororubber toughening modified epoxy resin system | |
| CN111171476A (en) | Composite heat insulation material for green building and preparation method thereof | |
| CN112143214A (en) | Latex gloves | |
| CN108587185A (en) | A kind of gas phase high-strength and high-transparent molding glue | |
| CN110437621A (en) | A kind of liquid silastic and preparation method thereof |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180928 |