CN105273374B - A kind of high-performance anti-warp glass fiber enhancing PBT/ASA alloy material - Google Patents

Abstract

The invention discloses a kind of high-performance anti-warp glass fibers to enhance PBT/ASA alloy material, which is characterized in that includes following component: PBT 30-60% by weight percentage；Mineral 5-20%；ASA 10-40%；Toughener 1-5%；Glass 5-30%；Nucleating agent 0.1-1.5%；Processing aid 0.8-1.5%.The present invention provides a kind of fiber glass reinforced PBT/ASA alloy materials with excellent mechanical property and excellent warpage preventing performance, the novel alloy can be applied to the easy warpage such as turning panel outside truck, to the demanding product of aging, have extensive prospects for commercial application.

Description

A kind of high-performance anti-warp glass fiber enhancing PBT/ASA alloy material

Technical field

The invention belongs to modified PBT/ASA technical fields, and in particular to a kind of high-performance anti-warp glass fiber enhancing PBT/ASA Alloy material.

Background technique

PBT (polybutylene terephthalate (PBT) Polybutylene Terephthalates) is in general engineering plastic A kind with fastest developing speed the latest is industrialized, although arriving 1970s ability industrialized production, since PBT is with excellent Different comprehensive performance, good molding processibility and excellent cost performance, quickly hot issue markets.PBT has high-fire resistance, tough Property, fatigue durability, self-lubricating, low-friction coefficient, weatherability, water absorption rate are low, still kept in wet environment various physical property (including Electrical property), electrical insulating property, can crystallize rapidly under low temperature, good forming ability.In automobile manufacturing field, PBT is widely used in production The components such as carburetion device assembly, mud guard, spark plug terminal plate.

But volume resistance, the dielectric loss of PBT are big, heat-proof water, bases, acids, oils but vulnerable to chlorinated hydrocabon corrode, it is water-fast Guards escorting prisoners, notch impact strength is low, and inprocess shrinkage is big.Therefore it is most of using fiberglass reinforced or electrodeless mineral-filled modification, it stretches Intensity, bending strength can be improved one times or more, and heat distortion temperature also greatly improves, can the long-term work at 140 DEG C.But glass Product vertical, horizontal shrinking percentage is inconsistent after enhancing, easily makes product that warpage occur.

Summary of the invention

Glass fiber reinforced PBT resin always exists larger problem, in view of the above technical problems, this hair in terms of product warpage Bright inventor uses PBT and ASA (styrene-acrylonitrile-acrylic rubber terpolymer) to be made into as basic raw material Alloy makes alloy material have the characteristics that high temperature resistant, dumb light and excellent weatherability and outstanding chemical-resistant, passes through simultaneously The warpage preventing performance that the auxiliary materials such as suitable mineral, nucleating agent, flat glass and toughener improve alloy material is added, thus Obtain a kind of high-performance anti-warp glass fiber enhancing PBT/ASA alloy material.

Therefore, the first purpose of this invention is to provide a kind of high-performance anti-warp glass fiber enhancing PBT/ASA alloy material Material.

Second object of the present invention is to provide the system of the high-performance anti-warp glass fiber enhancing PBT/ASA alloy material Preparation Method.

In order to solve the above-mentioned technical problem, The technical solution adopted by the invention is as follows:

A kind of high-performance anti-warp glass fiber enhances PBT/ASA alloy material, includes following component by weight percentage:

Preferably, high-performance anti-warp glass fiber enhancing PBT/ASA alloy material includes by weight percentage Following component:

Wherein, the PBT be relative density 1.31-1.35,220-230 DEG C of fusing point, melt index (250 DEG C, 2.16kg) 80-160g/10min, PBT material of the molding shrinkage within the scope of 1.5-2.2, the preferably PBT 0.8 of Changchun company Viscous and PBT 1.0 is viscous.

The mineral be talcum powder within the scope of 1250-3000 mesh, mica, wollastonite it is one or more.

The ASA is relative density 1.03-1.06, fusing point 210-240, melt index (220 DEG C, 10kg) 10-40g/ 10min, ASA material of the molding shrinkage within the scope of 0.4-0.7, preferably the ASA PW95 of Qi Mei company.

The toughener is maleic anhydride grafted ethene and octene copolymer (POE is grafted MAH), acrylate butadiene One of styrene block copolymer, polyester elastomer, polyolefin elastomer, ethylene-methyl acrylate copolymer (PTW) or It is a variety of, the preferably PTW of E.I.Du Pont Company.

The glass is one of alkali-free glass fibre, medium-alkali glass fibre, high-strength glass fibre or a variety of, fibre Tieing up diameter is 6-25 microns, the preferably GF TFG4355 of Mount Taishan company.

The nucleating agent is one of long-chain linear saturated carboxylic acid sodium salt, 10000 mesh talcum powder, sodium benzoate or more Kind, preferably 10000 mesh talcum powder of the nucleating agent P250 and Yi meter Fa ratio IMIFABI company of Brueggemann company.

The processing aid be one of primary antioxidant, auxiliary antioxidant, in-lubricant, external lubricant or a variety of, Wherein, the primary antioxidant is β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid n-octadecyl alcohol ester, four [β-(3,5- bis- Tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester, bis- (2,4- di-tert-butyl-phenyl) pentaerythrites or 2,6- di-t-butyl- One of 4-4 cresols is a variety of；The auxiliary antioxidant is three (2,4- di-tert-butyl-phenyl) phosphite esters, thio 3 third One of sour dilauryl or the double stearic alcohol esters of thio-2 acid are a variety of；The in-lubricant be E wax, calcium stearate or One of person's polyethylene wax (PE wax) is a variety of；The external lubricant is silicone master batch or pentaerythritol stearate (PETS)。

The preparation method of the high-performance anti-warp glass fiber enhancing PBT/ASA alloy material is the following steps are included: by institute PBT, the mineral, the ASA, the toughener, the glass, the nucleating agent and the processing aid are stated according to certain High mixer high-speed stirred is added in ratio, is then added in double screw extruder and carries out basic granulation, wherein the twin-screw squeezes Out-of-machine temperature is distributed as 210-245 DEG C.Preferably, the double screw extruder Temperature Distribution is as follows: by feed zone to head point Not are as follows: 210 DEG C, 245 DEG C, 245 DEG C, 240 DEG C, 235 DEG C, 230 DEG C, 230 DEG C, 220 DEG C, 210 DEG C, die head: 245 DEG C.

The utility model has the advantages that

1, basic raw material PBT, the ASA and other auxiliary materials selected all has preferable mobility, easy to form；

2, ASA plastic due on the basis of ABS (acrylonitrile-butadiene-styrene copolymer) by the fourth two of easy aging Alkene item is transformed into non-aging EP rubbers class, and therefore, ASA has excellent weather resistance, and PBT and ASA are made into alloy, The advantages of the two can be integrated, makes material have high temperature resistant, and dumb light and excellent weatherability and outstanding chemical-resistant etc. are special Point；

3, the nucleating agent used is the mixture of 10000 mesh talcum powder and P250, guarantees that PBT can be fast while reducing cost The nucleation of speed, forms the spherulitic crystal structure of fine uniform, improves the dimensional stability and warpage preventing performance of material；

4, the mineral used are lamellar structure, the size of adjustable product and the warpage properties for preferably reducing material；

5, the glass used is the flat glass by specially treated, can greatly promote the warpage preventing of material Energy；

6, the toughener used is ethylene-methyl acrylate copolymer (PTW), which can be improved The dispersion of alloy material.

The present invention provides a kind of fiber glass reinforced PBT with excellent mechanical property and excellent warpage preventing performance/ ASA alloy material, the novel alloy can be applied to the easy warpage such as turning panel outside truck, to the demanding system of aging Part has extensive prospects for commercial application.

Specific embodiment

Below in conjunction with specific embodiment, the present invention will be further described.It should be understood that following embodiment is merely to illustrate this The range of invention and is not intended to limit the present invention.

Embodiment 1-5

PBT resin and ASA resin, mineral and various auxiliary agents are added high mixer high-speed stirred 2 minutes, extruder is added to Main feeder, glass is added from side feed material button, enters finally into and carries out basic granulation in double screw extruder.The extruder Temperature Distribution is as follows: by feed zone to head be respectively as follows: 210 DEG C, 245 DEG C, 245 DEG C, 240 DEG C, 235 DEG C, 230 DEG C, 230 DEG C, 220 DEG C, 210 DEG C, die head: 245 DEG C, material squeeze out after by water cooling, pelletizing, then pack.Pellet is placed in air dry oven, 90 DEG C drying 4 hours, test bars are then prepared by injection molding machine.

Each raw material weight number of embodiment 1-5 is as shown in table 1.

The raw material weight number of 1 embodiment 1-5 of table

The performance test results of embodiment 1-5 are as shown in table 2.

2 the performance test results of table

From above-described embodiment as can be seen that flat glass and mica can largely inhibit the warpage properties of material Can, using the embodiment 5 of common glass, and do not add mica, the embodiment 1 that only uses flat glass can all generate part Warpage, but the addition of mica can reduce the Some Mechanical Properties of material, and reduce the mobility of material, so that material injection It is difficult.Therefore, comprehensive various performances, obtain performance balance preferred embodiment 3 and 4, both ensure that the mechanical property of material, The warpage preventing performance for making material, reaches best.

Claims (1)

1. a kind of high-performance anti-warp glass fiber enhances PBT/ASA alloy material, which is characterized in that by weight percentage, include Following component:

The alloy material is made by the following method: high mixer is added in PBT resin and ASA resin, mineral and various auxiliary agents High-speed stirred 2 minutes, it is added to the main feeder of extruder, glass is added from side spout, enters finally into twin-screw and squeezes Extruding pelletization is carried out in machine out；Extruder temperature distribution is as follows: being respectively as follows: 210 DEG C, 245 DEG C, 245 by feed zone to head DEG C, 240 DEG C, 235 DEG C, 230 DEG C, 230 DEG C, 220 DEG C, 210 DEG C, die head: 245 DEG C, material squeeze out after by water cooling, pelletizing, so After pack；Pellet is placed in air dry oven, 90 DEG C drying 4 hours, test bars are then prepared by injection molding machine.