CN106700296A - Low-tension sheet-shaped molded material - Google Patents
Low-tension sheet-shaped molded material Download PDFInfo
- Publication number
- CN106700296A CN106700296A CN201510772114.2A CN201510772114A CN106700296A CN 106700296 A CN106700296 A CN 106700296A CN 201510772114 A CN201510772114 A CN 201510772114A CN 106700296 A CN106700296 A CN 106700296A
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- CN
- China
- Prior art keywords
- parts
- low
- molded material
- shaped molded
- sheet
- 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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- 239000000463 material Substances 0.000 title abstract description 13
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 17
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 14
- 229920006038 crystalline resin Polymers 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 9
- 239000004793 Polystyrene Substances 0.000 claims abstract description 8
- 239000003999 initiator Substances 0.000 claims abstract description 8
- 229920002223 polystyrene Polymers 0.000 claims abstract description 8
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 7
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 7
- 238000000465 moulding Methods 0.000 claims abstract description 6
- 239000000654 additive Substances 0.000 claims abstract description 5
- 230000000996 additive effect Effects 0.000 claims abstract description 4
- 239000003677 Sheet moulding compound Substances 0.000 claims description 11
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims 1
- 239000004411 aluminium Substances 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 229910052791 calcium Inorganic materials 0.000 claims 1
- 239000011575 calcium Substances 0.000 claims 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 239000000835 fiber Substances 0.000 abstract description 4
- 229920005989 resin Polymers 0.000 abstract description 4
- 239000011347 resin Substances 0.000 abstract description 4
- 230000008719 thickening Effects 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention discloses a low-tension sheet-shaped molded material, and belongs to the field of composite insulated materials. The low-tension sheet-shaped molded material comprises the following formula in parts by weight: 80-100 parts of calcium carbonate, 60-80 parts of aluminum hydroxide, 20-40 parts of a low-shrinkage additive, 2-5 parts of a de-molding agent, 10-20 parts of crystalline resin, 5-15 parts of magnesium oxide powder, 1-3 parts of an initiator and 15-25 parts of polystyrene. The low-tension sheet-shaped molded material can meet the requirements of thickening at the room temperature, and viscosity of the molded material can be controlled well according to the existing theory, so that process performances meet the requirements of filling a mould cavity through sheet low-tension forming, and uniformly flowing fibers borne on resin paste.
Description
Technical field
The invention belongs to a kind of composite insulating material, specifically, more particularly to a kind of low pressure sheet molding compound.
Background technology
Insulating material is the material that electric current can be prevented to pass through, and its resistivity is very high, and insulation board is used as insulating material
One staple product, plays significant role in national economy.Extensive insulation plate in the market is substantially by epoxy resin
Lamination is carried out with glass fabric to form.Because epoxy resin and glass fabric price are high, along with molding time is long, directly
Or the production cost of epoxy insulating board is improve indirectly.Low-pressure Molding Compounds are thickened using crystalline resins, viscosity in mould can be significantly reduced,
Realize low pressure molding.But the method has the following disadvantages：Thickening initial viscosity rising is too fast, does not have enough formed sheet and leachings
Moisten the operating time of fiber；Because crystalline resins fusing point is at 60-70 DEG C or so, to be added on sheet material machine in sheet material manufacturing process
Heater, to ensure that now resin paste has the relatively low viscosity of wettable fiber, this inevitably increases the energy and equipment
Cost, runs counter to the low consumed purpose of drop, is individually added into crystalline resins and is difficult to realize that the viscosity in mould is controlled as thickener, then
Resin is easily lost in only in 1-10Pa.s or so, pressurization to be added without in the case of mass filler viscosity in hot-die.
The content of the invention
It is an object of the present invention to provide a kind of low pressure sheet molding compound, to overcome insulation board material production cost in the prior art high, plus
Work molding time defect long.
The present invention is realized using following technical scheme：
A kind of low pressure sheet molding compound, including following weight is than formula：Calcium carbonate 80-100 parts, aluminium hydroxide 60-80 parts, it is low
Shrink additives 20-40 parts, releasing agent 2-5 parts, crystalline resins 10-20 parts, 5-15 parts of magnesia powder, initiator 1-3
Part, polystyrene 15-25 parts.
Including following weight than being formulated：100 parts of calcium carbonate, 70 parts of aluminium hydroxide, 30 parts of low shrinkage additive, releasing agent 3
Part, 15 parts of crystalline resins, 10 parts of magnesia powder, 2 parts of initiator, 20 parts of polystyrene.
Glass fibre mass fraction accounting in low pressure sheet molding compound sheet material is 20%-40%.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) crystalline resins of the invention are added in the form of powder, using magnesia as the method for thickener, can meet room temperature increasing
Thick requirement, and viscosity can preferably be controlled according to existing theory, this kind of method need not add in sheet forming in addition
Heat, not only saves the input of scrap build but also avoids the sheet material stability reduction that heating may cause；
(2) thickened with heating batch mixing because this kind of method thickening sheet material of the hot thixotropy of crystalline resins molecule can reach in hot-die
Similar viscosity, the requirement of die cavity, resin paste energy bearing fiber Uniform Flow can be full of so as to reach low-pressure sheet shaping.
Specific embodiment
With reference to embodiment, the invention will be further described.
Embodiment 1：
A kind of low pressure sheet molding compound, including following weight is than formula：80 parts of calcium carbonate, 60 parts of aluminium hydroxide, lower shrinkage add
Plus 20 parts of agent, 2 parts of releasing agent, 10 parts of crystalline resins, 5 parts of magnesia powder, 1 part of initiator, 15 parts of polystyrene.
Embodiment 2：
A kind of low pressure sheet molding compound, including following weight is than formula：90 parts of calcium carbonate, 70 parts of aluminium hydroxide, lower shrinkage add
Plus 30 parts of agent, 3 parts of releasing agent, 15 parts of crystalline resins, 10 parts of magnesia powder, 2 parts of initiator, 20 parts of polystyrene.
Embodiment 3：
A kind of low pressure sheet molding compound, including following weight is than formula：100 parts of calcium carbonate, 80 parts of aluminium hydroxide, lower shrinkage add
Plus 40 parts of agent, 5 parts of releasing agent, 20 parts of crystalline resins, 15 parts of magnesia powder, 3 parts of initiator, 25 parts of polystyrene.
Claims (3)
1. a kind of low pressure sheet molding compound, it is characterised in that：Including following weight than being formulated：Calcium carbonate 80-100 parts, hydrogen-oxygen
Change 60-80 parts of aluminium, low shrinkage additive 20-40 parts, releasing agent 2-5 parts, crystalline resins 10-20 parts, magnesia powder 5-15
Part, initiator 1-3 parts, polystyrene 15-25 parts.
2. a kind of low pressure sheet molding compound according to right wants 1, it is characterised in that：Including following weight than being formulated：Carbonic acid
100 parts of calcium, 70 parts of aluminium hydroxide, 30 parts of low shrinkage additive, 3 parts of releasing agent, 15 parts of crystalline resins, magnesia powder
10 parts, 2 parts of initiator, 20 parts of polystyrene.
3. a kind of low pressure sheet molding compound according to claim 1, it is characterised in that：The glass fibre is in low pressure sheet
Mass fraction accounting is 20%-40% in molding media sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510772114.2A CN106700296A (en) | 2015-11-12 | 2015-11-12 | Low-tension sheet-shaped molded material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510772114.2A CN106700296A (en) | 2015-11-12 | 2015-11-12 | Low-tension sheet-shaped molded material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106700296A true CN106700296A (en) | 2017-05-24 |
Family
ID=58929734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510772114.2A Withdrawn CN106700296A (en) | 2015-11-12 | 2015-11-12 | Low-tension sheet-shaped molded material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106700296A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110757853A (en) * | 2019-10-31 | 2020-02-07 | 武汉恒丰市政设施有限公司 | Manufacturing method of die-pressing septic tank |
-
2015
- 2015-11-12 CN CN201510772114.2A patent/CN106700296A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110757853A (en) * | 2019-10-31 | 2020-02-07 | 武汉恒丰市政设施有限公司 | Manufacturing method of die-pressing septic tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170524 |