CN1212345C - Process for preparing fibre-reinforced thermoplastic sections - Google Patents
Process for preparing fibre-reinforced thermoplastic sections Download PDFInfo
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- CN1212345C CN1212345C CN 01112967 CN01112967A CN1212345C CN 1212345 C CN1212345 C CN 1212345C CN 01112967 CN01112967 CN 01112967 CN 01112967 A CN01112967 A CN 01112967A CN 1212345 C CN1212345 C CN 1212345C
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- thermoplastic resin
- preimpregnation
- glass fiber
- fiber yarn
- glasscloth
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Abstract
The present invention relates to a preparing method for a fiber reinforced thermoplastic section. The present invention is characterized in that a glass fiber yarn and a glass fiber fabric are respectively preimpregnated in thermoplastic resin by an impregnation technology; the preimpregnated glass fiber yarn and the preimpregnated glass fiber fabric are respectively heated to form a preimpregnation material; then the preimpregnation material is extruded and molded by an extruder die. Compared with the prior art, the present invention can make the fiber sufficiently impregnated in the thermoplastic resin and can make the prepared section have high surface gloss and favorable longitudinal and transverse mechanical performance.
Description
Technical field
The present invention relates to the manufacture method of thermoplastic sections, relate in particular to a kind of manufacture method of fibre-reinforced thermoplastic sections.
Background technology
Absorb fillers in synthetic resins, such as fiber can improve its mechanical property usually to a great extent, and as hardness, intensity and toughness etc., especially continuous fibre enhanced resin often can obtain good resistance to impact shock and warp resistance intensity.What prior art had soaks into fiber with resin with the method for electrostatic adhesion, then directly soaking into good fiber process moulding; Often surface gloss is lower for the moulded products that this method obtains, and fiber shared weight ratio in finished product is higher, greatly reduces the welding property of finished product; On the other hand, because fiber is disposable infiltration, also can cause the fibre orientation degree of finished product higher.Soak into fiber with the blending method, can have the not enough problem of surface gloss equally, simultaneously, the fiber reinforced material that the blending method is made the situation of degradation can occur in that to have a common boundary the place often bonding not firm.The technology that also has is that fibrous bundle is passed molten resin or liquid resin, machine-shaping then.But the thermoplastic resin viscosity under the molten state is quite high, and the fibre array in the fibrous bundle is very tight, and under such situation, thermoplastic resin is difficult to effectively be impregnated in the fibrous bundle, thereby its performance of made material also is difficult to be guaranteed.In addition, be generally solid-stately under the thermoplastic polymer room temperature, must heat become molten state just can be used for soaking into fiber.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of fiber that makes fully to be soaked in thermoplastic resin for the defective that overcomes above-mentioned prior art existence, and makes the section bar of making have surface of good glossiness and the good manufacture method that vertically reaches the fibre-reinforced thermoplastic sections of transverse mechanical performance.
Purpose of the present invention can be achieved through the following technical solutions: a kind of manufacture method of fibre-reinforced thermoplastic sections, be characterized in, distinguish preimpregnation glass fiber yarn and glasscloth with thermoplastic resin by impregnation technology, the glass fiber yarn and the glasscloth of preimpregnation are added the thermosetting prepreg respectively, again this prepreg is passed through the extrusion moulding of forcing machine die head.
In the described pre-impregnating process, glass fiber yarn and glasscloth are to obtain abundant preimpregnation with the electrostatic adhesion method in thermoplastic resin.
In the described pre-impregnating process, glass fiber yarn is to obtain abundant preimpregnation when the thermoplastic resin alicyclic monomer carries out the ionic polymerization reaction.
In the described pre-impregnating process, glasscloth is to obtain abundant preimpregnation with blending technology in thermoplastic resin.
The thermoplastic resin that the preimpregnation of described glass fiber yarn and glasscloth is adopted is selected from polypropylene, polymeric amide, polycarbonate, poly-methyl-methyl acrylate, polyethylene terephthalate, polybutylene terephthalate or polyphenylene sulfide.
Described forcing machine die head has thermoplastic resin impregnated glass fiber yarn of fused and glasscloth.
Described forcing machine die head can add the short glass fiber of reinforcing profile lateral performance.
Described forcing machine die head is heated to 150 ℃～250 ℃.
The present invention be with in thermoplastic resin pre-impregnated glass fiber yarn and glasscloth under heating condition by the forcing machine die head, again the material of gained is made moulding.The present invention can adopt the electrostatic adhesion method to make glass fiber yarn fully pre-infiltration in thermoplastic resin, wherein the electrostatic adhesion method produces static by electrostatic power unit, and make static on the thermoplastic resin powder band in the static fluidizing chamber, by pressurized air with these spraying of powdery row material to fiber surface, the fiber that sprayed is passed through heating chamber, and powder is made prepreg after melting.Electrostatic adhesion method among the present invention also can substitute with reaction method, make molten monomer polymerization reaction take place under the effect of catalyzer of thermoplastic resin, described catalyzer can be the basic metal or derivatives thereof, finishes the dipping of resin to fibre single thread in reaction.Thermoplastic resin in the reaction method is preferably polymeric amide.The present invention can also adopt blending technology to obtain the pre-impregnated glasscloth of thermoplastic resin; Blending technology wherein is that thermoplastic resin is made silk by spinning technique, will make fabric behind resin silk that make and the glass fibre silk blend again.Glass fiber yarn that the present invention crosses resin prepreg at last and glasscloth pass through the forcing machine die head under the condition of air heating.The various resin additives that are full of thermoplastic resin in the forcing machine die head and dispose by a certain percentage, after pre-impregnated glass fiber yarn of thermoplastic resin and fabric melt in die head once more, pass through typing and refrigerating unit together with the molten resin in the forcing machine, shape product is made in blanking then.Described resin additive can comprise oxidation inhibitor, fire retardant, toughener etc., and by performance of composites requirement proportioning being disposed various auxiliary agents; Oxidation inhibitor wherein can be general antioxygen 1010 etc., and fire retardant can be antimonous oxide, phosphorus series etc., and toughener can be lime carbonate, mica, fiber etc.In above-mentioned technology, in order to guarantee the performance of matrix, the thermoplastic resin of preimpregnated glass fibre yarn and fabric employing is preferably identical with the resin of employing in the forcing machine die head or consistency is better.Since among the present invention with resin prepreg glass fiber yarn and fabric, make fiber have the good mechanical performance, as tensile strength and flexural strength; Glass fiber yarn of simultaneously resin prepreg being crossed and fabric have so just guaranteed the vertical performance and the lateral performance of gained matrix material simultaneously by the forcing machine die head again.Adopt the forcing machine die head then can provide more resin, strengthened the bonding of silvalin and fabric on the one hand, owing to resin in the pultrusion process forms resin-rich layer at the surface energy of section bar, can improve the surface smoothness of section bar effectively on the other hand.And increasing of resin can make the content of glass fibre reduce under the situation that guarantees the section bar performance, thereby improves the welding property of section bar.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1
Will be through the pre-impregnated 70% glass fiber yarn Reinforced Nylon material of electrostatic powder, and glass content is 60% glass fiber with the fabric of nylon wire by the forcing machine die head, use 10% macrofiber enhanced nylon melt in the die head, with the speed drawing section bar of 1m/min, blanking after cooling off.
The sample that obtains is cut out sample respectively according to GB/T 1040, GB/T 1043, GB/T 9342, made batten is tested under the condition of corresponding national standards.
Following is to be 50% test specimen test result to the glass fibre weight ratio
Vertically:
Tensile strength (MPa) 500
Flexural strength (MPa) 320
Modulus in flexure (MPa) 20000
Laterally:
Tensile strength (MPa) 300
Flexural strength (MPa) 250
Modulus in flexure (MPa) 18000
The unidirectional fibre that content of glass fiber is identical strengthens its lateral performance of material:
Tensile strength (MPa) 50
Flexural strength (MPa) 100
Modulus in flexure (MPa) 5000
Embodiment 2
Experiment flow and testing standard are with 1, and nylon gets after substituting with polypropylene
Vertically:
Tensile strength (MPa) 400
Flexural strength (MPa) 300
Modulus in flexure (MPa) 18000
Laterally:
Tensile strength (MPa) 280
Flexural strength (MPa) 200
Modulus in flexure (MPa) 15000
Claims (2)
1. the manufacture method of a fibre-reinforced thermoplastic sections, it is characterized in that, distinguish preimpregnation glass fiber yarn and glasscloth with thermoplastic resin by impregnation technology, the glass fiber yarn and the glasscloth of preimpregnation are added the thermosetting prepreg respectively, again with above-mentioned two kinds of prepregs mixing and by the extrusion moulding of forcing machine die head; In the described pre-impregnating process, glass fiber yarn is to obtain abundant preimpregnation or obtain abundant preimpregnation in thermoplastic resin when the thermoplastic resin alicyclic monomer carries out the ionic polymerization reaction with the electrostatic adhesion method, and glasscloth is to obtain abundant preimpregnation or obtain abundant preimpregnation with blending technology in thermoplastic resin in thermoplastic resin with the electrostatic adhesion method; Described forcing machine die head is heated to 150 ℃～250 ℃.
2. the manufacture method of fibre-reinforced thermoplastic sections according to claim 1, it is characterized in that the thermoplastic resin that the preimpregnation of described glass fiber yarn and glasscloth is adopted is selected from polypropylene, polymeric amide, polycarbonate, poly-methyl-methyl acrylate, polyethylene terephthalate, polybutylene terephthalate or polyphenylene sulfide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01112967 CN1212345C (en) | 2001-05-23 | 2001-05-23 | Process for preparing fibre-reinforced thermoplastic sections |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01112967 CN1212345C (en) | 2001-05-23 | 2001-05-23 | Process for preparing fibre-reinforced thermoplastic sections |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1386779A CN1386779A (en) | 2002-12-25 |
| CN1212345C true CN1212345C (en) | 2005-07-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01112967 Expired - Fee Related CN1212345C (en) | 2001-05-23 | 2001-05-23 | Process for preparing fibre-reinforced thermoplastic sections |
Country Status (1)
| Country | Link |
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| CN (1) | CN1212345C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100355808C (en) * | 2004-01-02 | 2007-12-19 | 上海杰事杰新材料股份有限公司 | Continuous long-fiber reaction-reinforced nylon resin and its making method |
| CN101906251B (en) * | 2009-06-04 | 2013-06-12 | 上海杰事杰新材料(集团)股份有限公司 | Composite material for wind power generator blade and preparation method thereof |
| CN104227865A (en) * | 2013-06-24 | 2014-12-24 | 黑龙江鑫达企业集团有限公司 | Preparation of continuous glass fiber reinforced polyamide material |
| CN106273556B (en) * | 2015-05-26 | 2019-04-09 | 句容市百事特复合材料有限公司 | The preparation process of GFRTP material strip and the thermoplastic profiles of staple fiber composite strengthening |
| CN105034491A (en) * | 2015-07-01 | 2015-11-11 | 杭州华聚复合材料有限公司 | Polypropylene glass fiber composite material and preparation method thereof |
| CN106808762B (en) * | 2015-12-02 | 2019-03-01 | 株洲时代电气绝缘有限责任公司 | A kind of high intensity drawing and extruding section bar and preparation method thereof |
| US20190022897A1 (en) * | 2017-07-24 | 2019-01-24 | Aerlyte, Inc. | Fiber-reinforced molding compounds and methods of forming and using the same |
| CN113400686B (en) * | 2021-06-17 | 2022-10-18 | 北玻院(滕州)复合材料有限公司 | Large-scale anti-corrosion protective cover for marine steel structure and pultrusion method thereof |
| CN113583268B (en) * | 2021-09-01 | 2022-12-02 | 西安交通大学 | Method for improving performance of fiber resin matrix composite material |
-
2001
- 2001-05-23 CN CN 01112967 patent/CN1212345C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1386779A (en) | 2002-12-25 |
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