CN104559091B - A kind of heat-resisting, high tenacity of height exempts from primary coat product and preparation method thereof - Google Patents

Abstract

High heat-resisting, high tenacity exempt from primary coat product the invention discloses a kind of.The height is heat-resisting, high tenacity primary coat product of exempting from is by 64 74 weight %PBT；20 30 weight %PC；35 weight % compatilizers；0.5 weight % mesoporous materials；1.5 weight % nucleators；0.5 weight % lubricants；0.5 weight % antioxidant is prepared.The present invention also protects its preparation method.Present invention improves the compatibility of PBT/PC alloys, improve the heat resistance and low-temperature flexibility for exempting from basecoat material, current material is overcome to notch-sensitive shortcoming, the heat distortion temperature of material is reached 170 180 DEG C, fully meet the use standard of more than 160 DEG C of existing decorative ring of vehicle lamp heat resistant requirements；Good processing fluidity is provided simultaneously with, the use requirement of different product structure can be competent at.

Description

A kind of heat-resisting, high tenacity of height exempts from primary coat product and preparation method thereof

Technical field

The present invention relates to polymeric material field, more particularly to a kind of high heat-resisting, high tenacity exempt from primary coat product and its system Preparation Method.

Background technology

Current automobile lamp case ring has turned into the important component of automobile personalized designs, wherein exempt from primary coat product by Aluminized in can directly steam, surface spraying is first passed through without pre-, reduced because of environmental pollution caused by solvent volatilization, and The consistency problem between priming paint and matrix resin is avoided, additionally, exempting from primary coat product can also effectively reduce the life of automotive lamp product Cost is produced, therefore as an important development trend.Exempting from primary coat product in the market mainly has PBT, PBT/ABS and heat-resisting Several major classes such as PC products.Wherein, primary coat PBT and PBT/ABS alloy product surface gloss is exempted from poor, and heat distortion temperature exists 130-150 DEG C, it is difficult to meet the use requirement of existing decorative ring of vehicle lamp product；The poor fluidity of heat-resisting PC products, price is higher.

The content of the invention

A kind of good, the excellent in mechanical performance it is an object of the invention to provide surface gloss, low-temperature flexibility is good, and heat becomes Shape temperature is high, is provided simultaneously with good processing fluidity, disclosure satisfy that the primary coat of exempting from of the use requirement of present decorative ring of vehicle lamp is produced Product.

To achieve the above object, the present invention is provided and a kind of high heat-resisting, high tenacity exempts from primary coat product, it is characterised in that by The component of following percentage by weight is prepared,

PBT：64-74%；

PC：20-30%；

Compatilizer：3-5%；

Mesoporous material：0.5%；

Nucleator：1.5%；

Lubricant：0.5%；

Antioxidant：0.5%.

Preferably, PBT：68%；

PC：25%；

Compatilizer：4%；

Mesoporous material：0.5%；

Nucleator：1.5%；

Lubricant：0.5%；

Antioxidant：0.5%.

The PBT is the PBT of middle low viscosity material, and viscosity is 0.8-1.0dL/g.

The PC is the PC of middle low viscosity material, and melting means is 10-20g/10min.

Described compatilizer is the copolymer of acrylate and GMA.

Described mesoporous material is silicoaluminophosphate of the aperture in the meso-hole structure of 2-50nm.

Described nucleator is ionomer.

Described lubricant is low molecule esters.

Described antioxidant is the compounding component of phenols and phosphite ester；Preferably, both mass ratioes are 1: 2.

Exempt from the preparation method of primary coat product described in the present invention also protection, it is characterised in that step is,

Raw material is weighed by each component percentage by weight；

PBT, PC for weighing and other additives are mixed into 10-15min in high-speed mixer；

The raw material that will be mixed is by double screw extruder melting extrusion, granulation, and processing technology is as follows：Temperature range 230- 250 DEG C, screw speed is in 350r/min.

Heretofore described PC components improve the heat resistance and impact flexibility of alloy material, and compatilizer is further improved The interface compatibility of system, but because PBT/PC alloys have certain ester exchange reaction in itself during melt blending, Too high PC components can aggravate ester exchange reaction, and small-molecule substance is separated out and increased, and material surface glossiness declines, it is difficult to meet Product exempts from primary coat requirement；Additionally, compatibilizer content is too high, the mobility of material can be reduced, it is impossible to meet being molded into for product Type requirement.Therefore, the present inventor is by after test of many times and creative work, just drawing technical side of the invention Case.

The present invention adds compatilizer by introducing PC matrix resins, improves the compatibility of PBT/PC alloys, improves this and exempts from The heat resistance and low-temperature flexibility of basecoat material.Compared with current material, PBT/PC of the invention exempts from primary coat product and adds PC bases Body resin and compatilizer, allow the heat distortion temperature of material to reach 170-180 DEG C, fully meet existing decorative ring of vehicle lamp heat-resisting It is required that more than 160 DEG C of use standard；Additionally, the low-temperature flexibility for exempting from basecoat material is good, current material poor toughness is overcome, to lacking The sensitive shortcoming of mouth, is provided simultaneously with good processing fluidity, can be competent at the use requirement of different product structure.

The present invention is verified that there is breach to rush to obtain technical scheme by a series of comparative examples and embodiment Hit intensity is high, and heat distortion temperature is high, and surface gloss is good, while having good processing fluidity, satisfaction exempts from basecoat material Use requirement.

Specific embodiment

Embodiments of the invention are described below in detail, the example of the embodiment is intended to be used to explain the present invention, and can not It is interpreted as limitation of the present invention.Unreceipted particular technique or condition part in embodiment, are retouched according to document in the art The technology or condition stated are carried out according to product description.Agents useful for same or the unreceipted production firm person of instrument, being can be with By city available from conventional products.

Following examples material therefor：Mesoporous material SAPO-60 (Shen Hao, SAPO)；Nucleator Surlyn 8920 (Du Pont, sarin resin)；Lubricant PETS (dragon is husky, pentaerythritol stearate), 1: 2 mass ratio (is pressed in antioxidant 1076/168 Mixing) (vapour bar, four propionate/tri- [2.4- di-tert-butyl-phenyls] phosphite ester)；PBT-GX121 (viscosity 1.0dL/g) (Jiangsu Yizheng)；PC-1000R (melting means 10g/10min) (Jiangsu Yizheng)；Compatilizer AX-8900 (French Ackers Agate).

Each composition of the invention does not limit the concrete model of above-mentioned specific composition and businessman's purchase.

Embodiment 1：Exempt from the preparation of primary coat product

Raw material (percentage by weight)：It is shown in Table 1.

Preparation method：After said components are mixed uniformly in high mixer in proportion, by twin-screw melting extrusion, granulation. Specific processing technology is as follows：230-250 DEG C of temperature range, screw speed is in 350r/min.

Tensile strength, notch impact strength, heat distortion temperature, surface gloss, melt index and whether can be in order to avoid primary coat It is measured according to ASTM standard.The results are shown in Table 2.

Embodiment 2：Exempt from the preparation of primary coat product

Raw material：It is shown in Table 1.

Preparation method：With embodiment 1.

Tensile strength, notch impact strength, heat distortion temperature, surface gloss, melt index and whether can be in order to avoid primary coat It is measured according to ASTM standard.The results are shown in Table 2.

Embodiment 3：Exempt from the preparation of primary coat product

Raw material：It is shown in Table 1.

Preparation method：With embodiment 1.

Tensile strength, notch impact strength, heat distortion temperature, surface gloss, melt index and whether can be in order to avoid primary coat It is measured according to ASTM standard.The results are shown in Table 2.

Embodiment 4：Exempt from the preparation of primary coat product

Raw material：It is shown in Table 1.

Preparation method：With embodiment 1.

Tensile strength, notch impact strength, heat distortion temperature, surface gloss, melt index and whether can be in order to avoid primary coat It is measured according to ASTM standard.The results are shown in Table 2.

Comparative example

Comparative example 1：Raw material is shown in Table 1, and preparation method the results are shown in Table 2 with embodiment 1, examination criteria with embodiment 1；

Comparative example 2：Raw material is shown in Table 1, and preparation method the results are shown in Table 2 with embodiment 1, examination criteria with embodiment 1；

Comparative example 3：Raw material is shown in Table 1, and preparation method the results are shown in Table 2 with embodiment 1, examination criteria with embodiment 1；

Comparative example 4：Raw material is shown in Table 1, and preparation method the results are shown in Table 2 with embodiment 1, examination criteria with embodiment 1；

Comparative example 5：Raw material is shown in Table 1, and preparation method the results are shown in Table 2 with embodiment 1, examination criteria with embodiment 1；

Comparative example 6：Raw material is shown in Table 1, and preparation method the results are shown in Table 2 with embodiment 1, examination criteria with embodiment 1.

The experiment of the embodiment 1-4 of table 1 and each comparative example matches table (percentage by weight)

The embodiment 1-5 sample test performance comparison tables of table 2

As can be seen from Table 1 and Table 2, the formula of embodiment of the present invention 1-4, in the indices of detection, notch shock is strong Degree is high, and heat distortion temperature is high, and surface gloss is good, while having good processing fluidity, satisfaction exempts from the use of basecoat material It is required that；Compared with comparative formula 1-6, with clear advantage.

Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art is not departing from principle of the invention and objective In the case of above-described embodiment can be changed within the scope of the invention, change, replace and modification.

Claims (5)

1. it is a kind of high heat-resisting, high tenacity to exempt from primary coat product, it is characterised in that to be prepared into by the component of following percentage by weight Arrive,

PBT：64%；

PC：30%；

Compatilizer：3%；

Mesoporous material：0.5%；

Nucleator：1.5%；

Lubricant：0.5%；

Antioxidant：0.5%；

The PBT is the PBT of middle low viscosity material, and viscosity is 0.8-1.0dL/g；Described nucleator is sarin resin；It is described Compatilizer be the copolymer of acrylate and GMA；Described mesoporous material is aperture in 2-50nm Meso-hole structure silicoaluminophosphate；Described lubricant is low molecule esters；Described antioxidant is phenols and phosphite ester Class compounds component；Described antioxidant is 1 for the mass ratio of phenols and phosphorous acid esters compounding component:2.

2. it is a kind of high heat-resisting, high tenacity to exempt from primary coat product, it is characterised in that to be prepared into by the component of following percentage by weight Arrive,

PBT：68%；

PC：25%；

Compatilizer：4%；

Mesoporous material：0.5%；

Nucleator：1.5%；

Lubricant：0.5%；

Antioxidant：0.5%；

The PBT is the PBT of middle low viscosity material, and viscosity is 0.8-1.0dL/g；Described nucleator is sarin resin；It is described Compatilizer be the copolymer of acrylate and GMA；Described mesoporous material is aperture in 2-50nm Meso-hole structure silicoaluminophosphate；Described lubricant is low molecule esters；Described antioxidant is phenols and phosphite ester Class compounds component；Described antioxidant is 1 for the mass ratio of phenols and phosphorous acid esters compounding component:2.

3. it is a kind of high heat-resisting, high tenacity to exempt from primary coat product, it is characterised in that to be prepared into by the component of following percentage by weight Arrive,

PBT：74%；

PC：20%；

Compatilizer：3%；

Mesoporous material：0.5%；

Nucleator：1.5%；

Lubricant：0.5%；

Antioxidant：0.5%；

The PBT is the PBT of middle low viscosity material, and viscosity is 0.8-1.0dL/g；Described nucleator is sarin resin；It is described Compatilizer be the copolymer of acrylate and GMA；Described mesoporous material is aperture in 2-50nm Meso-hole structure silicoaluminophosphate；Described lubricant is low molecule esters；Described antioxidant is phenols and phosphite ester Class compounds component；Described antioxidant is 1 for the mass ratio of phenols and phosphorous acid esters compounding component:2.

4. it is a kind of high heat-resisting, high tenacity to exempt from primary coat product, it is characterised in that to be prepared into by the component of following percentage by weight Arrive,

PBT：70%；

PC：22%；

Compatilizer：5%；

Mesoporous material：0.5%；

Nucleator：1.5%；

Lubricant：0.5%；

Antioxidant：0.5%；

The PBT is the PBT of middle low viscosity material, and viscosity is 0.8-1.0dL/g；Described nucleator is sarin resin；It is described Compatilizer be the copolymer of acrylate and GMA；Described mesoporous material is aperture in 2-50nm Meso-hole structure silicoaluminophosphate；Described lubricant is low molecule esters；Described antioxidant is phenols and phosphite ester Class compounds component；Described antioxidant is 1 for the mass ratio of phenols and phosphorous acid esters compounding component:2.

5. the preparation method of primary coat product is exempted from described in any one of claim 1-4, it is characterised in that step is

Raw material is weighed by each component percentage by weight；

PBT, PC for weighing and other additives are mixed into 10-15min in high-speed mixer；

The raw material that will be mixed is by double screw extruder melting extrusion, granulation, and processing technology is as follows：Temperature range 230-250 DEG C, screw speed is in 350r/min.