CN101759967A - Halogen-free warp-resistant PBT of excellent electrical properties and preparing technique thereof - Google Patents
Halogen-free warp-resistant PBT of excellent electrical properties and preparing technique thereof Download PDFInfo
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- CN101759967A CN101759967A CN200910235158A CN200910235158A CN101759967A CN 101759967 A CN101759967 A CN 101759967A CN 200910235158 A CN200910235158 A CN 200910235158A CN 200910235158 A CN200910235158 A CN 200910235158A CN 101759967 A CN101759967 A CN 101759967A
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- halogen
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Abstract
The present invention relates to an organic polymer composite, particularly to a halogen-free warp-resistant polybutylece terephthalate (PBT) of excellent electrical properties and a preparing technique thereof. The PBT consists of the following constituents in a ratio by weight: 40 to 90% of PBT, 1 to 3% of stone mastic asphalt (SMA), 1 to 35% of micro halogen-free mica sheet, 1 to 30% of halogen-free glass microsphere, 1 to 5% of toughening agent, 0.1 to 0.4% of coupling agent and 0.1 to 5.5% of other auxiliaries. The halogen-free warp-resistant PBT of excellent electrical properties and the preparing technique have the advantages that warp-resistant properties and excellent electrical properties are increased on the basis of excellent comprehensive mechanical properties, and the PBT does not contain halogen. Production and procurement are convenient, and meanwhile, all the other environmental protection requirements are met. Thus, the comprehensive competitive power is improved.
Description
Technical field
The present invention relates to a kind of organic polymer composite, more particularly, relate to a kind of halogen-free warp-resistant PBT of excellent electrical properties and preparation method thereof.
Background technology
PBT uses one of maximum several engineering plastics at present, he has good forming process, crystallization velocity is fast, the product surface good luster, size is more stable, and water-intake rate is lower, chemicals-resistant and oil-proofness are good, particularly arc resistance is good, for the Other Engineering plastics can't be obtained, these comprehensive characteristics make it be widely used in industries such as electric and electronic automobile mechanical instrument and do structural part.But along with social development, every technology is maked rapid progress, and the excellent characteristics of the electrical property of PBT resin can not satisfy product requirement more multi-field, and, the structure design that becomes increasingly complex also requires starting material to possess better dimensional stability and forming process.Therefore, launched PBT is carried out composite modified research.And America and Europe/Japan or the like developed country has started all restrictions of foreign imported product for various reasons at present, has set up a series of barrier, wherein, to the material Halogen requirement of electric equipment products, is exactly one of them.The present technique invention produces in order effectively to overcome this phenomenon.
Summary of the invention
The objective of the invention is to effectively overcome the defective of prior art, a kind of material is provided, and Halogen and comprehensive mechanical performance have not kept increasing on the good basis halogen-free warp-resistant PBT of excellent electrical properties raw material of the good and high electrical performance of anti-buckling deformation.
Technical scheme provided by the invention is as follows: a kind of halogen-free warp-resistant PBT of excellent electrical properties raw material of the present invention is formed PBT:40-90% by weight by following composition; SMA:1-3%; Halogen mica microplate: 1-35%; Halogen glass microballon: 1-30%; Toughner: 1-5%; Coupling agent: 0.1-0.4%; Other auxiliary agents: 0.1-5.5%.
Halogen-free warp-resistant PBT of excellent electrical properties preparation methods of the present invention, comprise the steps: earlier PBT to be dried, Halogen mica microplate is according to 55 degree preheatings, PBT after will drying then, SMA, the Halogen glass microballon, toughner, coupling agent, other auxiliary agents proportionally after the weighing in mixer low speed mixing 10 minutes, in proportion add the Halogen mica microplate slow speed of revolution mixing extrude by the side through twin screw extruder under the screw combinations situation that medium tenacity is sheared again, the pelletizing of water-cooled tie rod makes the halogen-free warp-resistant PBT of excellent electrical properties material through screening and dewatering.
The present invention has effectively overcome the defective of prior art, has the following advantages:
A kind of halogen-free warp-resistant PBT of excellent electrical properties of the present invention and manufacture craft thereof, on the good basis of comprehensive mechanical performance, anti-buckling deformation and high electrical performance have been increased, and it is not halogen-containing, and production procurement is convenient, simultaneously also meet other all environmental requirement, improved synthesized competitiveness like this.
Embodiment
Below be the most preferred embodiment of halogen-free warp-resistant PBT of excellent electrical properties raw material of the present invention, therefore do not limit protection scope of the present invention.
Embodiment one, and a kind of halogen-free warp-resistant PBT of excellent electrical properties raw material of the present invention is formed PBT:49.1%, SMA:1.5% by weight by following composition; Halogen mica microplate: 30%; Halogen glass microballon: 15%: toughner: 3%; Coupling agent: 0.2%; Other auxiliary agents: 1.2%;
Earlier PBT is dried, Halogen mica microplate is according to 55 degree preheatings, PBT, SMA after will drying then, Halogen glass microballon, toughner, coupling agent, other auxiliary agents proportionally after the weighing in mixer low speed mixing 10 minutes, mixer adopts low speed mixing, paddle should with the barrel gap less than 0.5 centimetre, the supplementary material mixed effect should visual various particles and powder even substantially, do not have obvious agglomerate or gather; Twin screw extruder uses 36 length-to-diameter ratios, the combination of medium tenacity shear screw, and setting is not higher than 200 rev/mins rotating speed; Halogen mica microplate is added in proportion by the side; Adopt water-cooled tie rod pelletizing mode, promptly make the halogen-free warp-resistant PBT of excellent electrical properties material through screening and dewatering.
Claims (2)
1. a halogen-free warp-resistant PBT of excellent electrical properties is characterized in that: form PBT:40-90% by weight by following composition; SMA:1-3%; Halogen mica microplate: 1-35%; Halogen glass microballon: 1-30%; Toughner: 1-5%; Coupling agent: 0.1-0.4%; Other auxiliary agents: 0.1-5.5%.
2. method for preparing halogen-free warp-resistant PBT of excellent electrical properties, it is characterized in that: comprise the steps: earlier PBT to be dried, Halogen mica microplate is according to 55 degree preheatings, PBT after will drying then, SMA, the Halogen glass microballon, toughner, coupling agent, other auxiliary agents proportionally after the weighing in mixer low speed mixing 10 minutes, in proportion add the Halogen mica microplate slow speed of revolution mixing extrude by the side through twin screw extruder under the screw combinations situation that medium tenacity is sheared again, the pelletizing of water-cooled tie rod makes the halogen-free warp-resistant PBT of excellent electrical properties material through screening and dewatering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910235158A CN101759967A (en) | 2009-11-13 | 2009-11-13 | Halogen-free warp-resistant PBT of excellent electrical properties and preparing technique thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910235158A CN101759967A (en) | 2009-11-13 | 2009-11-13 | Halogen-free warp-resistant PBT of excellent electrical properties and preparing technique thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101759967A true CN101759967A (en) | 2010-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910235158A Pending CN101759967A (en) | 2009-11-13 | 2009-11-13 | Halogen-free warp-resistant PBT of excellent electrical properties and preparing technique thereof |
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| CN (1) | CN101759967A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102898796A (en) * | 2012-11-05 | 2013-01-30 | 科创聚合物(苏州)有限公司 | High-electrical-property polybutylene terephthalate (PBT) and preparation process thereof |
| CN107400342A (en) * | 2017-09-07 | 2017-11-28 | 滁州优胜高分子材料有限公司 | A kind of preparation method of anti-warp glass fiber enhancing flame-retardant PBT particle |
| CN109438935A (en) * | 2018-12-12 | 2019-03-08 | 苏州工业园区科创橡塑有限公司 | High electrical performance anti-buckling deformation PBT material manufacture craft |
| CN109777055A (en) * | 2019-01-24 | 2019-05-21 | 深圳市富恒新材料股份有限公司 | Imvite modified PBT composite of a kind of mica powder enhancing and preparation method thereof |
-
2009
- 2009-11-13 CN CN200910235158A patent/CN101759967A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102898796A (en) * | 2012-11-05 | 2013-01-30 | 科创聚合物(苏州)有限公司 | High-electrical-property polybutylene terephthalate (PBT) and preparation process thereof |
| CN107400342A (en) * | 2017-09-07 | 2017-11-28 | 滁州优胜高分子材料有限公司 | A kind of preparation method of anti-warp glass fiber enhancing flame-retardant PBT particle |
| CN109438935A (en) * | 2018-12-12 | 2019-03-08 | 苏州工业园区科创橡塑有限公司 | High electrical performance anti-buckling deformation PBT material manufacture craft |
| CN109777055A (en) * | 2019-01-24 | 2019-05-21 | 深圳市富恒新材料股份有限公司 | Imvite modified PBT composite of a kind of mica powder enhancing and preparation method thereof |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100630 |