CN114507938A - Preparation method of wet-process thin felt composite chopped strand mat - Google Patents
Preparation method of wet-process thin felt composite chopped strand mat Download PDFInfo
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- CN114507938A CN114507938A CN202111654278.7A CN202111654278A CN114507938A CN 114507938 A CN114507938 A CN 114507938A CN 202111654278 A CN202111654278 A CN 202111654278A CN 114507938 A CN114507938 A CN 114507938A
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- Prior art keywords
- felt
- wet
- process thin
- glass fiber
- chopped glass
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000002131 composite material Substances 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000003365 glass fiber Substances 0.000 claims abstract description 38
- 238000007731 hot pressing Methods 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 239000007767 bonding agent Substances 0.000 claims description 3
- 238000010410 dusting Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims 1
- 239000000835 fiber Substances 0.000 abstract description 9
- 239000010410 layer Substances 0.000 abstract description 5
- 239000011347 resin Substances 0.000 abstract description 4
- 229920005989 resin Polymers 0.000 abstract description 4
- 244000025254 Cannabis sativa Species 0.000 abstract description 2
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 abstract description 2
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 abstract description 2
- 235000009120 camo Nutrition 0.000 abstract description 2
- 235000005607 chanvre indien Nutrition 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 239000011487 hemp Substances 0.000 abstract description 2
- 229910010272 inorganic material Inorganic materials 0.000 abstract description 2
- 239000011147 inorganic material Substances 0.000 abstract description 2
- 239000011229 interlayer Substances 0.000 abstract description 2
- 230000001788 irregular Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000004744 fabric Substances 0.000 description 13
- 239000011152 fibreglass Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000012779 reinforcing material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000011151 fibre-reinforced plastic Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 102100040287 GTP cyclohydrolase 1 feedback regulatory protein Human genes 0.000 description 1
- 101710185324 GTP cyclohydrolase 1 feedback regulatory protein Proteins 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007723 die pressing method Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000005007 epoxy-phenolic resin Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/558—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in combination with mechanical or physical treatments other than embossing
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4209—Inorganic fibres
- D04H1/4218—Glass fibres
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/559—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving the fibres being within layered webs
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
- D04H1/593—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives to layered webs
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention discloses a preparation method of a wet-process thin felt composite chopped strand felt, which belongs to the field of inorganic materials, wherein the wet-process thin felt is combined with chopped glass fibers, and the wet-process thin felt is used as a gel coat layer reinforced felt, is a fiber distributed in all directions, has the flexibility suitable for objects with edges and corners and irregular shapes and complex curved surfaces, is compounded with a glass fiber surface felt, can form a resin-rich layer between fiber gaps of the chopped glass fibers, endows a smooth and flat surface, effectively avoids hemp holes on the formed surface and fiber grains hidden in the fibers, and has the advantages of strengthened interlayer shear strength, surface toughness and excellent chemical resistance and corrosion resistance after reasonable hot pressing temperature and hot pressing speed are controlled.
Description
Technical Field
The invention relates to the field of inorganic materials, in particular to a preparation method of a wet-process thin felt composite chopped strand mat.
Background
The glass fiber chopped strand mat is a main glass fiber non-woven reinforcing material, which is prepared by cutting continuous glass fibers into about 50mm, uniformly distributing the glass fibers in a non-directional manner, using powder or emulsion as a binder, and settling and paving the glass fibers into a mat, has the characteristic of low price, but is easy to break during large-area construction, thereby becoming the reinforcing material with the largest use amount in a glass fiber reinforced polymer hand pasting process, and being widely used in mechanical forming processes such as winding, die pressing and the like.
Glass Fiber Reinforced Plastics (FRP), also known as GFRP, is a fiber reinforced plastic that generally refers to a matrix of unsaturated polyester, epoxy resin and phenolic resin reinforced with glass fibers or products thereof as reinforcing materials, and is called glass fiber reinforced plastic, and can be used to replace steel for manufacturing machine parts and automobile and ship shells. In the prior art, the pultrusion process cannot be used for the glass fiber felt, and the prepared glass fiber reinforced plastic has obvious texture problems due to improper surface treatment.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a preparation method of a wet-process thin felt composite chopped strand mat.
The technical scheme of the invention is as follows: a preparation method of a wet-process thin felt composite chopped strand mat comprises the following specific preparation steps:
step 1: processing the continuous glass fiber yarn by a chopper to form chopped glass fibers;
step 2: mixing the chopped glass fibers with the diameter of 50-150 mm in proportion, and then entering a settling chamber for settling;
and step 3: sprinkling water on the surface of the chopped glass fiber by a water spraying device, and spraying a binder CWB-918B according to the proportion of 7-10% by a dusting device;
and 4, step 4: carrying out high-temperature drying treatment on the chopped glass fibers coated with the adhesive;
and 5: laying a wet-process thin felt on the upper end face or/and the lower end face of the dehydrated chopped glass fiber according to the proportion of (9-16) to (2-5) of the glass fiber yarn and the wet-process thin felt, and bonding the wet-process thin felt and a felt formed by the chopped glass fiber by utilizing heat energy and a bonding agent through hot pressing to form a composite surface felt blank;
step 6: pressing the composite surfacing felt blank to reach the required thickness;
and 7: cutting, packing, coiling and warehousing.
In the further technical scheme, the drying temperature in the step 4 is 160-200 ℃, and the outlet temperature after drying is 160 ℃.
The further technical proposal is that the temperature of the hot pressing treatment in the step 5 is 160-180 ℃, and the hot pressing is carried out at the speed of 15-21 m/min.
The invention has the following beneficial effects:
according to the invention, the wet-process thin felt is combined with the chopped glass fiber, and the wet-process thin felt is used as a gel-coat layer reinforcing felt, is a fiber distributed in all directions, has the flexibility suitable for objects with edges and irregular shapes and complex curved surfaces, is compounded with the chopped glass fiber, can form a resin-rich layer between fiber gaps of the chopped glass fiber, endows a smooth and flat surface, effectively avoids hemp holes on the surface after forming and fiber grains hidden in the fiber, and has the advantages of strengthened interlayer shearing strength, surface toughness and excellent chemical resistance and corrosion resistance.
Detailed Description
The invention will be further illustrated and understood by the following non-limiting examples.
The invention provides a preparation method of a wet-process thin felt composite chopped strand mat, which comprises the following specific preparation steps:
step 1: processing the continuous glass fiber yarn by a chopper to form chopped glass fibers;
step 2: mixing the chopped glass fibers with the diameter of 50-150 mm in proportion, and then entering a settling chamber for settling; and step 3: sprinkling water on the surface of the chopped glass fiber by a water spraying device, and spraying a binder CWB-918B according to the proportion of 7-10% by a dusting device;
and 4, step 4: the technical scheme of the step (4) is that the drying temperature in the step (4) is 160-200 ℃, and the outlet temperature after drying is 160 ℃.
And 5: laying a wet-process thin felt on the upper end face or/and the lower end face of the dehydrated chopped glass fiber according to the proportion of (9-16) to (2-5) of the glass fiber yarn and the wet-process thin felt, bonding the wet-process thin felt and the felt formed by the chopped glass fiber by utilizing heat energy and a bonding agent through hot pressing to form a composite surface felt blank, wherein the temperature of the hot pressing treatment is 160-180 ℃, and the hot pressing is carried out at the speed of 15-21 m/min.
Step 6: pressing the composite surfacing felt blank to reach the required thickness;
and 7: cutting, packing, coiling and warehousing.
The determination of the bonding temperature in the present invention is as follows:
on the basis of ensuring the performance of basic appearance, the bonding temperature is slightly higher, and the bonding performance of the product can be improved.
When the hot-pressing temperature is 195 ℃, the surface of the fabric is melted, and part of the fabric is brittle and cracked, and the bonding temperature is overhigh; when the hot-pressing temperature is 160-180 ℃, the composite fabric has no obvious melting phenomenon, which indicates that the bonding temperature has little influence on the surface of the composite fabric in the temperature range, but when the bonding temperature is 155 ℃, the middle glass fiber of the composite fabric has poor bonding, part of the fiber slides out, which indicates that the bonding temperature is too low, so that the optimal bonding temperature is 160-180 ℃.
The determination of the bonding speed in the present invention is as follows:
1. the maximum working intensity of workers can be 30 m/min according to the speed of a production line, tests are carried out according to the production process, and when the speed exceeds 21m/min, felt surface defects caused by problems such as abnormal yarn ends and the like in the sedimentation process cannot be timely treated; 2. the bonding speed has great influence on the performance of the composite fabric, the bonding speed is too high, the bonding heating and pressing time of the fabric is too short, the bonding effect of the fabric is poor, and the separation phenomenon of each layer of the composite fabric is easy to occur; the bonding speed is too low, the bonding time of the fabric is long, the heating and pressing time is long, and particularly the pressing time is long, so that the thickness of the composite fabric is too small, and the using effect is influenced. Therefore, when the bonding speed is controlled to be 15-21m/min, the larger the thickness of the composite fabric is, the better the composite effect of the fabric is.
The simple surface felt is too brittle and has poor tensile property, and the simple chopped strand felt cannot be subjected to a pultrusion process because the tensile force of the simple chopped strand felt after being soaked in resin cannot be achieved, and the pultrusion process is also not suitable for the simple chopped strand felt. 1. The surface glossiness is good; 2. the tensile strength can still meet the process requirement within three minutes of resin soaking. Therefore, after the method is applied to a glass fiber reinforced plastic pultrusion process, the problem of improper treatment of the surface effect of the glass fiber reinforced plastic can be solved, the nylon felt imported from abroad is effectively replaced, the gap that raw materials need to be imported from abroad is filled, and the processing cost of users is further reduced.
Claims (3)
1. A preparation method of a wet-process thin felt composite chopped strand mat is characterized by comprising the following specific preparation steps:
step 1: processing the continuous glass fiber yarn by a chopper to form chopped glass fibers;
step 2: mixing the chopped glass fibers with the diameter of 50-150 mm in proportion, and then entering a settling chamber for settling;
and step 3: sprinkling water on the surface of the chopped glass fiber by a water spraying device, and spraying a binder CWB-918B according to the proportion of 7-10% by a dusting device;
and 4, step 4: carrying out high-temperature drying treatment on the chopped glass fibers coated with the adhesive;
and 5: laying a wet-process thin felt on the upper end face or/and the lower end face of the dehydrated chopped glass fiber according to the proportion of (9-16) to (2-5) of the glass fiber yarn and the wet-process thin felt, and bonding the wet-process thin felt and a felt formed by the chopped glass fiber by utilizing heat energy and a bonding agent through hot pressing to form a composite surface felt blank;
step 6: pressing the composite surfacing felt blank to reach the required thickness;
and 7: cutting, packing, coiling and warehousing.
2. The method as claimed in claim 1, wherein the drying temperature in step 4 is 160-200 ℃ and the outlet temperature after drying is 160 ℃.
3. The polyester composite felt and the preparation method thereof as claimed in claim 1, wherein the temperature of the heat pressing treatment in the step 5 is 150-180 ℃, and the heat pressing is performed at a speed of 15-21 m/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111654278.7A CN114507938A (en) | 2021-12-30 | 2021-12-30 | Preparation method of wet-process thin felt composite chopped strand mat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111654278.7A CN114507938A (en) | 2021-12-30 | 2021-12-30 | Preparation method of wet-process thin felt composite chopped strand mat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114507938A true CN114507938A (en) | 2022-05-17 |
Family
ID=81547772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111654278.7A Pending CN114507938A (en) | 2021-12-30 | 2021-12-30 | Preparation method of wet-process thin felt composite chopped strand mat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114507938A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5872067A (en) * | 1997-03-21 | 1999-02-16 | Ppg Industries, Inc. | Glass fiber strand mats, thermoplastic composites reinforced with the same and methods for making the same |
| CN1382856A (en) * | 2002-04-26 | 2002-12-04 | 南京菲尔特过滤材料有限公司 | Composite felt of chopped and original glass fibres and its making technology |
| CN1740422A (en) * | 2005-09-15 | 2006-03-01 | 山东泰山复合材料有限公司 | Glass fiber compounding, sewing and weaving blanket and its making process |
| CN101012601A (en) * | 2007-01-25 | 2007-08-08 | 浙江省嘉善县玻璃纤维织布厂 | Preparation method of glass fiber felt with high-intensity |
| JP2011058102A (en) * | 2009-09-07 | 2011-03-24 | Nippon Electric Glass Co Ltd | Method for producing glass chopped strand mat, glass chopped strand mat, and roof liner |
| CN102002862A (en) * | 2010-10-09 | 2011-04-06 | 江苏长海复合材料股份有限公司 | Method for preparing novel non-woven composite chopped strand mat |
| JP2011099189A (en) * | 2009-11-09 | 2011-05-19 | Nitto Boseki Co Ltd | Method for producing glass chopped strand mat, and glass chopped strand mat |
| CN103252945A (en) * | 2013-04-17 | 2013-08-21 | 常熟市东宇绝缘复合材料有限公司 | Dustproof glass fiber composite felt and processing method thereof |
-
2021
- 2021-12-30 CN CN202111654278.7A patent/CN114507938A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5872067A (en) * | 1997-03-21 | 1999-02-16 | Ppg Industries, Inc. | Glass fiber strand mats, thermoplastic composites reinforced with the same and methods for making the same |
| CN1382856A (en) * | 2002-04-26 | 2002-12-04 | 南京菲尔特过滤材料有限公司 | Composite felt of chopped and original glass fibres and its making technology |
| CN1740422A (en) * | 2005-09-15 | 2006-03-01 | 山东泰山复合材料有限公司 | Glass fiber compounding, sewing and weaving blanket and its making process |
| CN101012601A (en) * | 2007-01-25 | 2007-08-08 | 浙江省嘉善县玻璃纤维织布厂 | Preparation method of glass fiber felt with high-intensity |
| JP2011058102A (en) * | 2009-09-07 | 2011-03-24 | Nippon Electric Glass Co Ltd | Method for producing glass chopped strand mat, glass chopped strand mat, and roof liner |
| JP2011099189A (en) * | 2009-11-09 | 2011-05-19 | Nitto Boseki Co Ltd | Method for producing glass chopped strand mat, and glass chopped strand mat |
| CN102002862A (en) * | 2010-10-09 | 2011-04-06 | 江苏长海复合材料股份有限公司 | Method for preparing novel non-woven composite chopped strand mat |
| CN103252945A (en) * | 2013-04-17 | 2013-08-21 | 常熟市东宇绝缘复合材料有限公司 | Dustproof glass fiber composite felt and processing method thereof |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20220517 |