CN113462139A - Glass fiber reinforced plastic grating section bar and production process thereof - Google Patents
Glass fiber reinforced plastic grating section bar and production process thereof Download PDFInfo
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- CN113462139A CN113462139A CN202110815938.9A CN202110815938A CN113462139A CN 113462139 A CN113462139 A CN 113462139A CN 202110815938 A CN202110815938 A CN 202110815938A CN 113462139 A CN113462139 A CN 113462139A
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- 239000011152 fibreglass Substances 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 58
- 239000003365 glass fiber Substances 0.000 claims abstract description 30
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000003063 flame retardant Substances 0.000 claims abstract description 27
- 229920000728 polyester Polymers 0.000 claims abstract description 14
- 230000002745 absorbent Effects 0.000 claims abstract description 13
- 239000002250 absorbent Substances 0.000 claims abstract description 13
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Substances C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229920006337 unsaturated polyester resin Polymers 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 239000004342 Benzoyl peroxide Substances 0.000 claims abstract description 7
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims abstract description 7
- 235000019400 benzoyl peroxide Nutrition 0.000 claims abstract description 7
- GJBRNHKUVLOCEB-UHFFFAOYSA-N tert-butyl benzenecarboperoxoate Chemical compound CC(C)(C)OOC(=O)C1=CC=CC=C1 GJBRNHKUVLOCEB-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims description 60
- 238000003756 stirring Methods 0.000 claims description 24
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 18
- QUAMTGJKVDWJEQ-UHFFFAOYSA-N octabenzone Chemical compound OC1=CC(OCCCCCCCC)=CC=C1C(=O)C1=CC=CC=C1 QUAMTGJKVDWJEQ-UHFFFAOYSA-N 0.000 claims description 18
- -1 polyethylene Polymers 0.000 claims description 13
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 12
- DXGLGDHPHMLXJC-UHFFFAOYSA-N oxybenzone Chemical compound OC1=CC(OC)=CC=C1C(=O)C1=CC=CC=C1 DXGLGDHPHMLXJC-UHFFFAOYSA-N 0.000 claims description 12
- GDESWOTWNNGOMW-UHFFFAOYSA-N resorcinol monobenzoate Chemical compound OC1=CC=CC(OC(=O)C=2C=CC=CC=2)=C1 GDESWOTWNNGOMW-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- 229910019142 PO4 Inorganic materials 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 239000004793 Polystyrene Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 6
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 6
- QEZIKGQWAWNWIR-UHFFFAOYSA-N antimony(3+) antimony(5+) oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[Sb+3].[Sb+5] QEZIKGQWAWNWIR-UHFFFAOYSA-N 0.000 claims description 6
- 229910021538 borax Inorganic materials 0.000 claims description 6
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 6
- 239000010452 phosphate Substances 0.000 claims description 6
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 6
- 229920002223 polystyrene Polymers 0.000 claims description 6
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 6
- 239000011118 polyvinyl acetate Substances 0.000 claims description 6
- 239000004328 sodium tetraborate Substances 0.000 claims description 6
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 6
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 6
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 6
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000012779 reinforcing material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000000835 fiber Substances 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
- 239000004593 Epoxy Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000005007 epoxy-phenolic resin Substances 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002990 reinforced plastic Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/06—Unsaturated polyesters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/16—Halogen-containing compounds
- C08K2003/166—Magnesium halide, e.g. magnesium chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/387—Borates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Reinforced Plastic Materials (AREA)
- Macromonomer-Based Addition Polymer (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a glass fiber reinforced plastic grating profile, and particularly relates to the field of glass fiber reinforced plastic grating profiles, which comprises the following raw materials in parts by weight: 40-60 parts of glass fiber continuous felt, 40-60 parts of alkali-free glass fiber, 20-30 parts of polyester surface felt, 40-60 parts of m-benzene unsaturated polyester resin, 1-4 parts of curing agent, 20-25 parts of flame retardant, 2-4 parts of release agent, 1-3 parts of low shrinkage agent and 1-2 parts of ultraviolet absorbent, wherein the curing agent is composed of benzoyl peroxide and tert-butyl peroxybenzoate according to the mass ratio of 2: 1. The production process is simple, the obtained glass fiber reinforced plastic grid sectional material has the advantages of high strength, light weight, corrosion resistance, oxidation resistance, good flame retardant property and good smoothness, the adopted flame retardant has good fireproof and flame retardant effects, and meanwhile, the flame retardant is an environment-friendly material and does not pollute the environment.
Description
Technical Field
The invention relates to the technical field of glass fiber reinforced plastic grating profiles, in particular to a glass fiber reinforced plastic grating profile and a production process thereof.
Background
Glass fiber reinforced plastic, i.e., fiber reinforced plastic, generally refers to a matrix of unsaturated polyester, epoxy resin and phenolic resin reinforced with glass fibers. The reinforced plastic using glass fiber or its product as reinforcing material is called glass fiber reinforced plastic or glass fiber reinforced plastic, and is distinguished from toughened glass. Because of the different types of resins, the resins are called polyester glass fiber reinforced plastics, epoxy glass fiber reinforced plastics and phenolic aldehyde glass fiber reinforced plastics. Light weight, hardness, non-conductivity, stable performance, high mechanical strength, less recovery and corrosion resistance. Can replace steel to manufacture machine parts, automobile shells, ship shells and the like.
The glass fiber reinforced plastic is made into composite material by using glass fiber as main reinforcing material and resin as adhesive and through pultrusion, and various profiles such as glass fiber reinforced plastic pultruded grating, bar, slat, pipe, angle steel, channel steel and the like are processed through continuous pultrusion. Pultruded glass fiber reinforced plastics have numerous advantages: the typical pultrusion speed is high, the efficiency is high, and the method is suitable for mass production and manufacturing long-size products; the resin content can be accurately controlled; the twistless roving is mainly used for reinforcement, the raw material cost is low, and the mechanical property of the product can be adjusted by combining and using a plurality of reinforcing materials; the pultruded product has high fiber content, the gum dipping is carried out under tension, the mechanical property of the continuous fiber can be fully exerted, and the product has high strength; the utilization rate of raw materials is high, and the rejection rate is low; the longitudinal and transverse strength of the product can be adjusted at will, and the use requirements of products with different mechanical properties can be met. Due to the advantages, the pultrusion type glass fiber reinforced plastic products are widely applied to the aspects of chemical industry, construction, agriculture and the like, but the existing glass fiber reinforced plastic grid section bar generally has the problems of low surface hardness, poor abrasion resistance, insufficient flame retardance and poor smoothness.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks of the prior art, embodiments of the present invention provide a glass fiber reinforced plastic grid profile and a manufacturing process thereof, so as to solve the above-mentioned problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the glass fiber reinforced plastic grid section comprises the following raw materials in parts by weight:
40-60 parts of glass fiber continuous felt, 40-60 parts of alkali-free glass fiber, 20-30 parts of polyester surface felt, 40-60 parts of m-benzene unsaturated polyester resin, 1-4 parts of curing agent, 20-25 parts of flame retardant, 2-4 parts of release agent, 1-3 parts of low shrinkage agent and 1-2 parts of ultraviolet absorbent.
Further, the curing agent is composed of benzoyl peroxide and tert-butyl peroxybenzoate according to the mass ratio of 2: 1.
Further, the flame retardant comprises the following components in proportion: 30% of magnesium chloride, 10% of antimony dioxide, 10% of citric acid, 10% of sodium dodecyl sulfate, 10% of borax and 30% of diatomite.
Further, the release agent is one or a mixture of more than two of zinc stearate, phosphate ester or triethanolamine oil.
Further, the low shrinkage agent is one or a mixture of more than two of polyvinyl acetate, polymethyl methacrylate, polystyrene or polyethylene micropowder.
Further, the ultraviolet absorbent is one or a mixture of two or more of UV-9 (2-hydroxy-4-methoxybenzophenone), UV-531 (2-hydroxy-4-n-octoxybenzophenone), and RMB (resorcinol monobenzoate).
The invention also provides a production process of the glass fiber reinforced plastic grid section, which comprises the following steps:
s1, mixing the alkali-free glass fiber, the glass fiber continuous felt and the polyester surface felt, and then adding the m-benzene unsaturated polyester resin for full mixing to obtain a mixture A;
s2, adding a curing agent, a flame retardant, a release agent, a low shrinkage agent and an ultraviolet absorber into the mixture A obtained in the step S1, then adding the mixture A into a stirring kettle, mixing and stirring the mixture A, keeping the temperature at 50-80 ℃, the stirring speed at 500-1000 rpm, and the stirring time at 10-20 min to obtain a mixture B;
s3, pouring the mixture B obtained in the step S2 into a technological trough, and forming the mixture through a die heated by three sections at the pultrusion speed of 0.25 m/min.
Further, the temperature in the pultrusion process in the step S3 is 200-220 ℃, and the environmental temperature needs to be kept at 10-30 ℃.
The invention has the technical effects and advantages that:
the production process is simple, the obtained glass fiber reinforced plastic grid sectional material has the advantages of high strength, light weight, corrosion resistance, oxidation resistance, good flame retardant property and good smoothness, the adopted flame retardant has good fireproof and flame retardant effects, and meanwhile, the flame retardant is an environment-friendly material and does not pollute the environment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a glass fiber reinforced plastic grid section, which comprises the following raw materials in parts by weight:
40-60 parts of glass fiber continuous felt, 40-60 parts of alkali-free glass fiber, 20-30 parts of polyester surface felt, 40-60 parts of m-benzene unsaturated polyester resin, 1-4 parts of curing agent, 20-25 parts of flame retardant, 2-4 parts of release agent, 1-3 parts of low shrinkage agent and 1-2 parts of ultraviolet absorbent.
In a preferred embodiment, the curing agent is benzoyl peroxide and tert-butyl peroxybenzoate in a mass ratio of 2: 1.
In a preferred embodiment, the flame retardant consists of the following component proportions: 30% of magnesium chloride, 10% of antimony dioxide, 10% of citric acid, 10% of sodium dodecyl sulfate, 10% of borax and 30% of diatomite.
In a preferred embodiment, the release agent is one or a mixture of two or more of zinc stearate, phosphate ester or triethanolamine oil.
In a preferred embodiment, the low shrinkage agent is one or a mixture of two or more of polyvinyl acetate, polymethyl methacrylate, polystyrene, or polyethylene micropowder.
In a preferred embodiment, the ultraviolet absorber is one or a mixture of two or more of UV-9 (2-hydroxy-4-methoxybenzophenone), UV-531 (2-hydroxy-4-n-octoxybenzophenone), RMB (resorcinol monobenzoate).
The invention also provides a production process of the glass fiber reinforced plastic grid section, which comprises the following steps:
s1, mixing the alkali-free glass fiber, the glass fiber continuous felt and the polyester surface felt, and then adding the m-benzene unsaturated polyester resin for full mixing to obtain a mixture A;
s2, adding a curing agent, a flame retardant, a release agent, a low shrinkage agent and an ultraviolet absorber into the mixture A obtained in the step S1, then adding the mixture A into a stirring kettle, mixing and stirring the mixture A, keeping the temperature at 50-80 ℃, the stirring speed at 500-1000 rpm, and the stirring time at 10-20 min to obtain a mixture B;
s3, pouring the mixture B obtained in the step S2 into a technological trough, and forming the mixture through a die heated by three sections at the pultrusion speed of 0.25 m/min.
In a preferred embodiment, the temperature during the pultrusion process in the step S3 is 200-220 ℃, and the ambient temperature is maintained at 10-30 ℃.
Example 1
The glass fiber reinforced plastic grid section comprises the following raw materials in parts by weight:
40 parts of glass fiber continuous felt, 40 parts of alkali-free glass fiber, 20 parts of polyester surface felt, 40 parts of m-benzene unsaturated polyester resin, 1 part of curing agent, 20 parts of flame retardant, 2 parts of release agent, 1 part of low shrinkage agent and 1 part of ultraviolet absorbent.
Wherein the curing agent is benzoyl peroxide and tert-butyl peroxybenzoate according to the mass ratio of 2:1, and the flame retardant is prepared from the following components in parts by mass: 30% of magnesium chloride, 10% of antimony dioxide, 10% of citric acid, 10% of sodium dodecyl sulfate, 10% of borax and 30% of diatomite, wherein the release agent is one or a mixture of more than two of zinc stearate, phosphate ester or triethanolamine oil, the low shrinkage agent is one or a mixture of more than two of polyvinyl acetate, polymethyl methacrylate, polystyrene or polyethylene micropowder, and the ultraviolet absorbent is one or a mixture of more than two of UV-9 (2-hydroxy-4-methoxybenzophenone), UV-531 (2-hydroxy-4-n-octoxybenzophenone) and RMB (resorcinol monobenzoate).
The production process of the glass fiber reinforced plastic grid section comprises the following steps:
s1, mixing the alkali-free glass fiber, the glass fiber continuous felt and the polyester surface felt, and then adding the m-benzene unsaturated polyester resin for full mixing to obtain a mixture A;
s2, adding a curing agent, a flame retardant, a release agent, a low shrinkage agent and an ultraviolet absorber into the mixture A obtained in the step S1, then adding the mixture A into a stirring kettle, mixing and stirring the mixture A, keeping the temperature at 50-80 ℃, the stirring speed at 500 rpm, and the stirring time at 10min to obtain a mixture B;
s3, pouring the mixture B obtained in the step S2 into a technological trough, and forming the mixture through a die heated by three sections at the pultrusion speed of 0.25 m/min, wherein the temperature in the pultrusion process is 200 ℃, and the ambient temperature is kept at 10 ℃.
Example 2
The glass fiber reinforced plastic grid section comprises the following raw materials in parts by weight:
60 parts of glass fiber continuous felt, 60 parts of alkali-free glass fiber, 30 parts of polyester surface felt, 60 parts of m-benzene unsaturated polyester resin, 4 parts of curing agent, 25 parts of flame retardant, 4 parts of release agent, 3 parts of low shrinkage agent and 2 parts of ultraviolet absorbent.
Wherein the curing agent is benzoyl peroxide and tert-butyl peroxybenzoate according to the mass ratio of 2:1, and the flame retardant is prepared from the following components in parts by mass: 30% of magnesium chloride, 10% of antimony dioxide, 10% of citric acid, 10% of sodium dodecyl sulfate, 10% of borax and 30% of diatomite, wherein the release agent is one or a mixture of more than two of zinc stearate, phosphate ester or triethanolamine oil, the low shrinkage agent is one or a mixture of more than two of polyvinyl acetate, polymethyl methacrylate, polystyrene or polyethylene micropowder, and the ultraviolet absorbent is one or a mixture of more than two of UV-9 (2-hydroxy-4-methoxybenzophenone), UV-531 (2-hydroxy-4-n-octoxybenzophenone) and RMB (resorcinol monobenzoate).
The production process of the glass fiber reinforced plastic grid section comprises the following steps:
s1, mixing the alkali-free glass fiber, the glass fiber continuous felt and the polyester surface felt, and then adding the m-benzene unsaturated polyester resin for full mixing to obtain a mixture A;
s2, adding a curing agent, a flame retardant, a release agent, a low shrinkage agent and an ultraviolet absorber into the mixture A obtained in the step S1, then adding the mixture A into a stirring kettle, mixing and stirring the mixture A, keeping the temperature at 50-80 ℃, the stirring speed at 1000 rpm, and the stirring time at 20min to obtain a mixture B;
s3, pouring the mixture B obtained in the step S2 into a technological trough, and forming the mixture through a three-section heated die at a pultrusion speed of 0.25 m/min, wherein the temperature in the pultrusion process is 220 ℃, and the ambient temperature is required to be kept at 30 ℃.
Example 3
The glass fiber reinforced plastic grid section comprises the following raw materials in parts by weight:
50 parts of glass fiber continuous felt, 50 parts of alkali-free glass fiber, 25 parts of polyester surface felt, 50 parts of m-benzene unsaturated polyester resin, 2 parts of curing agent, 22 parts of flame retardant, 3 parts of release agent, 2 parts of low shrinkage agent and 1.5 parts of ultraviolet absorbent.
Wherein the curing agent is benzoyl peroxide and tert-butyl peroxybenzoate according to the mass ratio of 2:1, and the flame retardant is prepared from the following components in parts by mass: 30% of magnesium chloride, 10% of antimony dioxide, 10% of citric acid, 10% of sodium dodecyl sulfate, 10% of borax and 30% of diatomite, wherein the release agent is one or a mixture of more than two of zinc stearate, phosphate ester or triethanolamine oil, the low shrinkage agent is one or a mixture of more than two of polyvinyl acetate, polymethyl methacrylate, polystyrene or polyethylene micropowder, and the ultraviolet absorbent is one or a mixture of more than two of UV-9 (2-hydroxy-4-methoxybenzophenone), UV-531 (2-hydroxy-4-n-octoxybenzophenone) and RMB (resorcinol monobenzoate).
The production process of the glass fiber reinforced plastic grid section comprises the following steps:
s1, mixing the alkali-free glass fiber, the glass fiber continuous felt and the polyester surface felt, and then adding the m-benzene unsaturated polyester resin for full mixing to obtain a mixture A;
s2, adding a curing agent, a flame retardant, a release agent, a low shrinkage agent and an ultraviolet absorbent into the mixture A obtained in the step S1, then adding the mixture A into a stirring kettle, mixing and stirring the mixture A, keeping the temperature at 65 ℃, the stirring speed at 750 revolutions per minute and the stirring time at 15min to obtain a mixture B;
s3, pouring the mixture B obtained in the step S2 into a technological trough, and forming the mixture through a die heated by three sections at the pultrusion speed of 0.25 m/min, wherein the temperature in the pultrusion process is 210 ℃, and the ambient temperature is required to be kept at 20 ℃.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (8)
1. The glass fiber reinforced plastic grid section is characterized by comprising the following raw materials in parts by weight:
40-60 parts of glass fiber continuous felt, 40-60 parts of alkali-free glass fiber, 20-30 parts of polyester surface felt, 40-60 parts of m-benzene unsaturated polyester resin, 1-4 parts of curing agent, 20-25 parts of flame retardant, 2-4 parts of release agent, 1-3 parts of low shrinkage agent and 1-2 parts of ultraviolet absorbent.
2. A glass reinforced plastic grid profile according to claim 1, wherein: the curing agent is composed of benzoyl peroxide and tert-butyl peroxybenzoate according to the mass ratio of 2: 1.
3. A glass reinforced plastic grid profile according to claim 1, wherein: the flame retardant consists of the following components in percentage by weight: 30% of magnesium chloride, 10% of antimony dioxide, 10% of citric acid, 10% of sodium dodecyl sulfate, 10% of borax and 30% of diatomite.
4. A glass reinforced plastic grid profile according to claim 1, wherein: the release agent is one or a mixture of more than two of zinc stearate, phosphate or triethanolamine oil.
5. A glass reinforced plastic grid profile according to claim 1, wherein: the low shrinkage agent is one or a mixture of more than two of polyvinyl acetate, polymethyl methacrylate, polystyrene or polyethylene micro powder.
6. A glass reinforced plastic grid profile according to claim 1, wherein: the ultraviolet absorbent is one or a mixture of more than two of UV-9 (2-hydroxy-4-methoxybenzophenone), UV-531 (2-hydroxy-4-n-octoxybenzophenone) and RMB (resorcinol monobenzoate).
7. A process for the production of a glass fibre reinforced plastic grid profile according to any one of claims 1 to 6, comprising the following steps:
s1, mixing the alkali-free glass fiber, the glass fiber continuous felt and the polyester surface felt, and then adding the m-benzene unsaturated polyester resin for full mixing to obtain a mixture A;
s2, adding a curing agent, a flame retardant, a release agent, a low shrinkage agent and an ultraviolet absorber into the mixture A obtained in the step S1, then adding the mixture A into a stirring kettle, mixing and stirring the mixture A, keeping the temperature at 50-80 ℃, the stirring speed at 500-1000 rpm, and the stirring time at 10-20 min to obtain a mixture B;
s3, pouring the mixture B obtained in the step S2 into a technological trough, and forming the mixture through a die heated by three sections at the pultrusion speed of 0.25 m/min.
8. A process for manufacturing a glass fiber reinforced plastic grid profile according to claim 7, wherein: the temperature in the pultrusion process in the step S3 is 200-220 ℃, and the environmental temperature needs to be kept at 10-30 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110815938.9A CN113462139A (en) | 2021-07-20 | 2021-07-20 | Glass fiber reinforced plastic grating section bar and production process thereof |
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| CN202110815938.9A CN113462139A (en) | 2021-07-20 | 2021-07-20 | Glass fiber reinforced plastic grating section bar and production process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114381106A (en) * | 2021-12-15 | 2022-04-22 | 中山金春科技有限公司 | High-temperature-resistant high-strength BMC material and application thereof |
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| CN114381106A (en) * | 2021-12-15 | 2022-04-22 | 中山金春科技有限公司 | High-temperature-resistant high-strength BMC material and application thereof |
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Application publication date: 20211001 |