A glass fiber reinforced acs composite material and a preparation method thereof

Abstract

The application relates to a glass fiber reinforced ACS composite material and a preparation method thereof, which comprises the following components according to mass fraction ratio: ACS resin 40.5-84.5 parts; a compatilizer 2-8 parts; a toughening agent 4-10 parts; an antioxidant 0.2-0.6 parts; a lubricant 0.3-0.9 parts; ultra-fine wollastonite 3-10 parts; and glass fiber 5-30 parts. In the application, the strength of the ACS resin can be greatly improved by adopting the glass fiber. In order to avoid the floating fiber and warping conditions caused by the addition of the glass fiber, the compatilizer, the lubricant and the ultra-fine wollastonite are added in the application. The compatilizer can increase the compatibility between the components, the lubricant can change the flowability of the ACS resin, the ultra-fine wollastonite can improve the anisotropy of the glass fiber, and the shrinkage of the ACS resin itself is small, so the warping can be greatly reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of polymer composites, in particular to a glass fiber reinforced ACS composite material and a preparation method thereof. BACKGROUND

[0002] The ACS resin (acrylonitrile-chlorinated polyethylene-styrene copolymer) is regarded as an ideal substitute for high-end ABS, ASA (acrylic-styrene-acrylonitrile copolymer) and other engineering plastics due to its similar or even superior performance and lower production cost. The ACS resin has better weather resistance, chemical resistance and antistatic performance due to the use of unsaturated chlorinated polyethylene rubber instead of unsaturated polybutadiene rubber in ABS. In addition, the ACS resin is superior to ABS in shrinkage, dust resistance and antistatic deposition, and is widely used in household appliances, electronic appliances and the like.

[0003] In the application process of similar television brackets, appliance frames and the like, high rigidity, good dimensional stability, low shrinkage, low warping and certain dust resistance are required. Therefore, pure resin cannot meet the relevant requirements. Generally, in order to increase the rigidity of the resin, glass fibers are added. The addition of glass fibers can well solve the problems of insufficient rigidity and shrinkage of the material. However, the orientation of the glass fibers in the flow direction limits the shrinkage of the ACS resin. The induced crystallization of ACS around the glass fibers further strengthens this effect, so that the longitudinal (flow direction) shrinkage is less than the transverse (perpendicular to the flow direction) shrinkage during preparation. This uneven shrinkage can easily cause the composite material to warp. SUMMARY

[0004] In order to improve the strength of ACS while reducing the warping of the product and improving the dimensional stability of the product, the application provides a glass fiber reinforced ACS composite material and a preparation method thereof.

[0005] In a first aspect, the application provides a glass fiber reinforced ACS composite material, which adopts the following technical scheme: a glass fiber reinforced ACS composite material comprises the following components in terms of mass fraction ratio:

[0006]

[0007] Preferably, the glass fiber reinforced ACS composite material comprises the following components in terms of mass fraction ratio:

[0008]

[0009] By adopting the technical scheme, the strength of the ACS resin can be obviously enhanced by adding the glass fiber into the ACS resin, but the strength is limited when the content of the glass fiber is low, and the floating fiber and warping may occur when the content of the glass fiber is high, which affects the appearance and stability of the material. In the application, the compatilizer and the lubricant are added, the compatilizer can increase the fusion of the glass fiber and the ACS resin, and the lubricant can increase the flowability of the ACS resin, so that the occurrence of the floating fiber can be reduced. The nanoscale ultra-fine wollastonite is added in the application, which can change the anisotropy of the glass fiber and reduce the orientation degree of the glass fiber along the flow direction, so that the difference between the shrinkage in the flow direction and the vertical flow direction of the product is reduced, and the warping is reduced.

[0010] Preferably, the ACS resin is acrylonitrile-chlorinated polyethylene-styrene ternary copolymer white particles, and the melt index is 15-35 g / 10 min under the test condition of 220 ℃ and 10 kg.

[0011] Preferably, the ultra-fine wollastonite is 4000 mesh or more.

[0012] Preferably, the ultra-fine wollastonite is modified ultra-fine wollastonite, and the modification method comprises the following steps: heating and stirring the ultra-fine wollastonite, then spraying sodium hydroxide solution under stirring condition to activate, spraying γ-mercaptopropyl trimethoxysilane ethanol solution after the activation is completed, then heating and stirring for modification reaction, and drying after the reaction is completed to obtain the modified ultra-fine wollastonite.

[0013] By adopting the technical scheme, the wollastonite is mainly combined in the form of ionic bond, which has certain hydrophilicity, but the lipophilicity is poor, so the dispersibility of the wollastonite in the ACS resin is poor, so although the wollastonite can reduce the occurrence of warping, the dispersibility is poor, which may deteriorate the mechanical properties and surface gloss. In the application, the surface of the wollastonite is activated by sodium hydroxide to form Si-OH in the molecular structure, and then γ-mercaptopropyl trimethoxysilane is added to couple and graft on the surface of the wollastonite to form a layer of lipophilic group on the surface of the wollastonite, so that the affinity of the wollastonite to the ACS resin is increased, so that the wollastonite can be uniformly dispersed in the ACS resin, and the influence of the addition of the wollastonite on other properties of the composite material is reduced.

[0014] Preferably, the concentration of the sodium hydroxide solution is 2-3 mol / L, the mass-volume ratio of the superfine wollastonite and the sodium hydroxide solution is 1g:(0.05-0.08)mL; the volume ratio of the γ-mercaptopropyl trimethoxysilane and the ethanol is 1:(0.3-0.5), the mass-volume ratio of the wollastonite and the γ-mercaptopropyl trimethoxysilane ethanol solution is 1:(0.4-0.8); the heating and stirring temperature is 40-50℃, and the activation time is 20-40min; the temperature is raised to 60-80℃, and the modification reaction time is 1.5-3h.

[0015] By adopting the technical solution, the ratio of the superfine wollastonite and the sodium hydroxide solution needs to be strictly controlled in the application, so as to avoid excessive addition of the sodium hydroxide and damage the structure of the wollastonite, but also cannot be too small, otherwise the activation intensity is not enough, and the grafted coupling agent is less; the ratio of the wollastonite and the γ-mercaptopropyl trimethoxysilane also needs attention, and cannot be too much, otherwise the wollastonite cannot be completely grafted, and impurities are easily introduced in the formula, and also cannot be too small, otherwise the modification effect is poor; the ethanol is added in the application, mainly to play a solvation role, and increase the reactivity of the wollastonite and the γ-mercaptopropyl trimethoxysilane.

[0016] Preferably, the compatilizer is SMA-700 (Shanghai Huawen); the toughening agent is high glue powder HR-181; and the antioxidant is at least one of pentaerythritol bisphosphite di(2,4-di-tert-butylphenyl) ester, phosphite tri(2,4-di-tert-butylphenyl) ester, and tetra[β-(3,5-di-tert-butyl 4-hydroxyphenyl) propionic acid] pentaerythritol ester.

[0017] By adopting the technical solution, the SMA is used as the compatilizer in the application, so as to promote the fusion between the components, and ensure the surface flatness and gloss of the composite material. The high glue powder is used as the toughening agent, so as to increase the toughness of the composite material; and the above antioxidant is used, so as to improve the oxidation resistance of the material, avoid yellowing, and ensure the gloss of the material.

[0018] Preferably, the lubricant is at least one of erucic acid amide, magnesium stearate, ethylene bis-stearic acid amide, and pentaerythritol stearate; and the glass fiber is a chopped yarn with a diameter of 10um and a chopped length of 4.5mm.

[0019] By adopting the technical solution, the above lubricant is used as the lubricant in the application, and the above lubricant all contains a carboxyl bond, which can have a certain bonding effect with calcium ions in the wollastonite while changing the ACS fluidity, further increase the dispersibility of the wollastonite in the ACS, and improve the role of the wollastonite in reducing warping. The glass fiber in the application is a chopped yarn, which can reduce the occurrence of floating fiber phenomenon, and ensure the surface flatness and gloss of the composite material.

[0020] Preferably, the glass fiber reinforced ACS composite material further comprises 3-8 parts of amorphous copolyester PCTG.

[0021] By using the above technical solution, the amorphous copolyester PCTG can improve the flowability of the ACS resin and reduce the surface tension of the ACS resin, thereby reducing the shrinkage difference between the flow direction and the vertical flow direction during the molding of the ACS composite material and reducing the occurrence of floating fibers and warping.

[0022] In a second aspect, the application provides a method for preparing a glass fiber reinforced ACS composite material, comprising the following steps:

[0023] Step one, weigh the raw materials according to the formula proportion of the composite material, and mix and stir the components except the glass fibers to obtain a premix;

[0024] Step two, melt-extrude the premix obtained in step one through a double screw extruder, and simultaneously add the chopped yarn through a side feeder from the middle section of the screw, and then obtain the glass fiber reinforced ACS composite material after water cooling, granulation, and uniform mixing.

[0025] By using the above technical solution, the glass fibers are fed from the middle section of the screw during melt-extrusion, and the premix is in a molten state and has good flowability, which can increase the uniformity of the glass fiber mixing and reduce the generation of floating fibers.

[0026] Preferably, in step one, the mixing and stirring time is 1-5 min; and in step two, the melt-extrusion process parameters are as follows: ① zone: 175-180℃; ② zone: 200-210℃; ③ zone: 200-210℃; ④ zone: 200-210℃; ⑤ zone: 195-200℃; ⑥ zone: 190-195℃; ⑦ zone: 190-195℃; ⑧ zone: 200-205℃; ⑨ zone: die temperature: 200-210℃; and the screw rotation speed is controlled at 250-350 r / min.

[0027] By using the above technical solution, the application can further ensure the fusion of the components and the flowability of the resin, thereby improving the comprehensive performance of the composite material.

[0028] In summary, the application has at least one of the following beneficial technical effects:

[0029] 1. In the present application, the strength of the resin can be greatly improved by using glass fiber reinforced ACS resin. In order to avoid the occurrence of floating fiber and warping caused by the addition of glass fiber, a compatibilizer, a lubricant and ultra-fine wollastonite are added in the present application. The compatibilizer can increase the compatibility between the components, the lubricant can change the flowability of the ACS resin, and the ultra-fine wollastonite can improve the anisotropy of the glass fiber. In addition, the shrinkage rate of the ACS resin itself is small, which can greatly reduce the occurrence of warping.

[0030] 2. In the present application, the ultra-fine wollastonite is modified to exhibit lipophilicity, thereby increasing the dispersibility of the ultra-fine wollastonite in the ACS resin and avoiding the influence of the addition of ultra-fine wollastonite on the mechanical properties of the composite material.

[0031] 3. In the present application, amorphous copolyester PCTG is further added, which can improve the flowability of the ACS resin and reduce the surface tension of the ACS resin, thereby further reducing the occurrence of warping.

[0032] 4. The glass fiber reinforced system used in the present application has little environmental pollution, and the use of ACS resin further reduces the cost of the main material of the resin and further improves the economic benefits of the composite material to manufacturing. DETAILED DESCRIPTION

[0033] The SMA in the present application is purchased from Shanghai Huawen; the amorphous copolyester PCTG is purchased from Guangzhou Honghai New Material Technology Co., Ltd. The ACS resin is acrylonitrile-chlorinated polyethylene-styrene ternary copolymer white particles, with a melting point of 220℃ and a test condition of 10kg of 25g / 10min.

[0034] Preparation Example 1

[0035] 5kg of ultra-fine wollastonite (4000 mesh) was stirred in a stirrer, and the stirring condition was heated to 45℃. Then 350mL of 2mol / L sodium hydroxide solution was added, and activated for 30min. After activation, the temperature was raised to 70℃, and 3L of γ-mercaptopropyl trimethoxysilane ethanol solution (γ-mercaptopropyl trimethoxysilane and ethanol were heated at a volume ratio of 1:0.4) was added, and stirred for 2h for modification. After modification, the modified ultra-fine wollastonite was obtained.

[0036] Preparation Example 2

[0037] 5kg of ultra-fine wollastonite (4000 mesh) was stirred in a stirrer, heated to 45°C under stirring conditions, 250mL of 3mol / L sodium hydroxide solution was then added thereto, and activated for 40min. After the activation was completed, the temperature was raised to 60°C, 3.5L of a γ-mercaptopropyltrimethoxysilane ethanol solution (γ-mercaptopropyltrimethoxysilane:ethanol = 1:0.5 in volume ratio) was added thereto, and stirred for 2.5h to modify. After the modification was completed, the modified ultra-fine wollastonite was obtained.

[0038] Preparation Example 3

[0039] 5kg of ultra-fine wollastonite (4000 mesh) was stirred in a stirrer, heated to 45°C under stirring conditions, 400mL of 2mol / L sodium hydroxide solution was then added thereto, and activated for 20min. After the activation was completed, the temperature was raised to 60°C, 3.5L of a γ-mercaptopropyltrimethoxysilane ethanol solution (γ-mercaptopropyltrimethoxysilane:ethanol = 1:0.3 in volume ratio) was added thereto, and stirred for 3h to modify. After the modification was completed, the modified ultra-fine wollastonite was obtained.

[0040] Examples 1 to 6

[0041] The proportions of the components in Examples 1 to 6 are shown in Table 1.

[0042] Table 1

[0043]

[0044] The antioxidant used in Examples 1 to 6 was a mixture of pentaerythritol bisphosphite di(2,4-di-t-butylphenyl) ester and phosphite tri-(2,4-di-t-butylphenyl) ester in a mass ratio of 1:1; the lubricant was magnesium stearate foil; and the glass fiber was a chopped yarn having a diameter of 10μm and a chopped length of 4.5mm.

[0045] The preparation method in Examples 1 to 6 included the following steps:

[0046] Step 1. Each component (except the glass fiber) was weighed according to the proportions in Table 1, and the weighed components were stirred in a high-speed stirrer for 5min to obtain a premix.

[0047] Step two, melt-extruding the premix obtained in step one through a twin-screw extruder while adding chopped yarns through a side feeder from the middle section of the screw, and after water cooling, granulation, uniform mixing, injection molding into standard samples, a low-warp glass fiber-reinforced ACS composite material is obtained; wherein the temperature of the twin-screw extruder is set as follows: ① zone: 180℃; ② zone: 210℃; ③ zone: 210℃; ④ zone: 200℃; ⑤ zone: 195℃; ⑥ zone: 190℃; ⑦ zone: 190℃; ⑧ zone: 200℃; ⑨ zone: die temperature: 210℃; and the screw rotation speed is controlled at 300 r / min.

[0048] The standard samples in Example 1 are tested for tensile strength according to GB / T1040, for bending strength and bending modulus according to GB / T9341, for notched impact strength according to GB / T1043, and for shrinkage according to GB / T17037.4-2003 standard using a two-dimensional instrument at room temperature.

[0049] The test results in Examples 1-6 are shown in Tables 2 and 3.

[0050] Table 2

[0051]

[0052] Table 3

[0053]

[0054] As can be seen from the data in Tables 2 and 3, with the increase of the glass fiber content, the tensile strength, bending strength and bending modulus of the ACS composite material prepared will increase significantly, and the notched impact strength is not very regular, but will also change comprehensively with the change of other additives; it is shown that the addition of glass fiber in the present application can significantly improve the comprehensive mechanical properties of the composite material; overall, the comprehensive performance in Example 6 is the best.

[0055] From the aspect of fiber floating, in Example 3, when the glass fiber content reaches 26%, slight fiber floating occurs. From the shrinkage, in Example 3, the glass fiber is added the most, and thus the anisotropy is the strongest, although the superfine woll is increased, the difference in the vertical and horizontal shrinkage is the largest, reaching 0.32%; in Example 1, the glass fiber is added less, and thus the difference in shrinkage is the smallest, only 0.13%, but the strength is relatively poor; the smaller the vertical and horizontal shrinkage, the less likely to warp; in Examples 2 and 4-6, the shrinkage is basically maintained between 0.17%-0.20%, and at the same time has good strength; in terms of mechanical strength and shrinkage, the comprehensive performance in Example 6 is relatively superior.

[0056] Comparative Example 1

[0057] The same as example 6, the difference is that no ultra-fine wollastonite is added.

[0058] Comparative example 2

[0059] The same as example 6, the difference is that 2 kg of ultra-fine wollastonite is added, and the mass of other components is unchanged.

[0060] Example 7

[0061] The same as example 6, the difference is that 6 kg of ultra-fine wollastonite is added, and other components are unchanged.

[0062] Example 8

[0063] The same as example 6, the difference is that 10 kg of ultra-fine wollastonite is added, and other components are unchanged.

[0064] Example 9

[0065] The same as example 6, the difference is that 4 kg of modified ultra-fine wollastonite in preparation example 1 is added, and other components are unchanged.

[0066] The performance tests of comparative examples 1 and 2 and examples 7-9 are carried out, and the results are shown in tables 4 and 5:

[0067] Table 4

[0068]

[0069] Table 5

[0070]

[0071] From the data in table 4, it can be seen that: compared with example 6, in comparative example 1, no ultra-fine wollastonite is added, the performance will increase, but there will be floating fibers and large shrinkage difference, and obvious warping will occur in actual test; in comparative example 2, the amount of ultra-fine wollastonite is reduced, although there is no floating fiber, the shrinkage difference is large, and slight warping will occur.

[0072] Compared with example 6, examples 7 and 8 increase the content of ultra-fine wollastonite, in example 7, the mechanical properties decrease to a certain extent, but the shrinkage difference is reduced; in example 8, the content of ultra-fine wollastonite is further increased, the mechanical properties are further decreased, but the shrinkage difference is not obviously reduced, which shows that increasing excessive ultra-fine wollastonite will not further change the shrinkage reduction, but will aggravate the influence on the mechanical properties.

[0073] Compared with Example 6, the mechanical properties of Example 9 are improved and the difference in shrinkage is further reduced, which is probably because the modified ultrafine wollastonite has better dispersibility in the ACS resin, reducing the influence of the wollastonite on the mechanical properties, and at the same time making it better to improve the anisotropy of the glass fiber.

[0074] Examples 10-12

[0075] The formulation proportions in Examples 10-12 are shown in Table 6.

[0076] Table 6

[0077] Component Example 10 (Kg) Example 11 (Kg) Example 12 (Kg) ACS resin 66.1 66 61.1 SMA 4 5 7 High gum powder 181 6 6 5 Antioxidant 0.5 0.5 0.4 Lubricant 0.4 0.5 0.5 Ultrafine wollastonite 5 (Preparation Example 2) 5 (Preparation Example 1) 6 (Preparation Example 3) Glass fiber 18 17 20

[0078] The antioxidant used in Examples 10-12 is a mixture of tetrakis [beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester and phosphite tris- (2, 4-di-tert-butylphenyl) ester in a mass ratio of 1:1; the lubricant is erucamide, and the glass fiber is a chopped yarn with a diameter of 10 μm and a chopped length of 4.5 mm.

[0079] The preparation method in Examples 10-12 comprises the following steps:

[0080] Step 1: The components (except the glass fiber) are weighed according to the formulation proportions in Table 6, and the weighed components are high-speed stirred in a high-speed stirrer for 4 min to obtain a premix;

[0081] Step 2: The premix obtained in Step 1 is melt-extruded through a twin-screw extruder, and the chopped yarn is added from the middle section of the screw through a side feeder. After water cooling, granulation, and uniform mixing, standard samples are injection molded to obtain low-warp glass fiber reinforced ACS composites; wherein the temperature settings of the twin-screw extruder are as follows: ① zone: 175°C; ② zone: 200°C; ③ zone: 210°C; ④ zone: 210°C; ⑤ zone: 200°C; ⑥ zone: 195°C; ⑦ zone: 195°C; ⑧ zone: 205°C; ⑨ zone: die temperature: 200°C; and the screw rotation speed is controlled at 350 r / min.

[0082] The ACS composites in Examples 10-12 are subjected to performance testing, and the results are shown in Tables 7 and 8.

[0083] Table 7

[0084]

[0085] Table 8

[0086]

[0087] From the data in Table 7 and Table 8, it can be seen that Examples 10-12 all maintain very superior mechanical properties; the difference in shrinkage in horizontal and vertical directions is controlled to be below 0.2%, and neither warping nor floating fiber appears.

[0088] Examples 14-15

[0089] Examples 14-15 are respectively based on Examples 5 and 6, and 5 Kg of amorphous copolyester PCTG is respectively added to replace 5 Kg of ACS resin.

[0090] The specific proportions can be seen in Table 9.

[0091] Table 9

[0092] Component Example 14 (Kg) Example 15 (Kg) ACS resin 64.2 62.2 SMA 6 8 High gum powder 181 5 5 Antioxidant 0.4 0.4 Lubricant 0.4 0.4 Ultrafine wollastonite 4 4 Glass fiber 15 15 PCTG 5 5

[0093] The ACS composite materials prepared in Examples 14 and 15 are subjected to performance testing, and the results are shown in Table 10-11:

[0094] Table 10

[0095]

[0096] Table 11

[0097]

[0098] The performance data of Examples 14 and 15 are shown in Table 10 and 11, and compared with Example 5, the mechanical properties of Example 14 have a small decrease, which is possibly caused by the addition of PCTG; but the shrinkage difference is decreased to 0.13%, which is a relatively obvious decrease, and warping is basically impossible. The comparison between Example 15 and Example 6 is also consistent, which shows that the addition of PCTG can further improve the shrinkage difference and reduce the occurrence of warping.

[0099] Examples 16-19

[0100] Examples 16-19 are respectively based on Examples 9-12, and 6 Kg, 5 Kg, 4 Kg and 3 Kg of PCTG are respectively used to replace ACS resin, and the specific proportions can be seen in Table 12, and the preparation methods are respectively the same as the corresponding examples.

[0101] Table 12

[0102] Component Example 16 (kg) Example 17 (kg) Example 18 Example 19 ACS resin 61.2 61.1 62 58.1 SMA 8 4 5 7 High gum powder 181 5 6 6 5 Antioxidant 0.4 0.5 0.5 0.4 Lubricant 0.4 0.4 0.5 0.5 Ultrafine wollastonite 4 (Preparation Example 1) 5 (Preparation Example 2) 5 (Preparation Example 1) 6 (Preparation Example 3) Glass fiber 15 18 17 20 PCTG 6 5 4 3

[0103] The ACS composite materials in Examples 16-19 are subjected to performance testing, and the results are shown in Table 13-14.

[0104] Table 13

[0105]

[0106] Table 14

[0107]

[0108] From the data in Tables 13-14, it can be seen that, under the condition of adding modified ultra-fine wollastonite, further using non-crystalline copolymerized PCTG, the difference in shrinkage can be further reduced under the condition of sacrificing a small amount of mechanical properties, thereby further reducing the occurrence of warping and ensuring the stability of the size of the composite material.

[0109] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A glass fiber-reinforced ACS composite, characterized in that, According to the mass fraction ratio, the following components are included: ACS resin 40.5~84.5 parts; Compatibility agent 2~8 parts; Toughening agent 4~10 parts; Antioxidant 0.2~0.6 parts; Lubricant 0.3~0.9 parts; Ultrafine wollastonite 3~10 parts; Glass fiber 5~30 parts; The ultrafine wollastonite is modified ultrafine wollastonite, and the modification method includes the following steps: heating and stirring the ultrafine wollastonite, then spraying sodium hydroxide solution under stirring conditions, activating, after activation, spraying γ mercaptopropyl trimethoxysilane ethanol solution into it, then heating and stirring modification reaction, after reaction, drying, to obtain modified ultrafine wollastonite; the compatibility agent is SMA-700; the toughening agent is high glue powder HR-181; the antioxidant is at least one of pentaerythritol bisphosphite di(2,4-di-tert-butylphenyl) ester, phosphite tri(2,4-di-tert-butylphenyl) ester, and tetra[β-(3,5-di-tert-butyl 4-hydroxyphenyl) propionic acid] pentaerythritol ester; the lubricant is at least one of erucic acid amide, magnesium stearate, ethylene bis-stearyl amide, and pentaerythritol stearate; the glass fiber is chopped yarn with a diameter of 10 um and a chopped length of 4.5 mm, and the glass fiber reinforced ACS composite material further includes 3~8 parts of amorphous copolyester PCTG.

2. The glass fiber-reinforced ACS composite of claim 1, wherein, According to the mass fraction ratio, the following components are included: ACS resin 59.2~71.2 parts; Compatibility agent 4~8 parts; Toughening agent 5~8 parts; Antioxidant 0.4~0.5 parts; Lubricant 0.4~0.5 parts; Ultrafine wollastonite 4~5 parts; Glass fiber 15~26 parts.

3. The glass fiber-reinforced ACS composite of claim 1, wherein, The ACS resin is acrylonitrile-chlorinated polyethylene-styrene ternary copolymer white particles, and the melting index is 15-35 g / 10 min under the test conditions of 220℃, 10 kg.

4. The glass fiber-reinforced ACS composite of claim 1, wherein, The ultrafine wollastonite is 4000 mesh and above.

5. The glass fiber-reinforced ACS composite of claim 1, wherein, The concentration of the sodium hydroxide solution is 2~3 mol / L, the mass-volume ratio of the ultrafine wollastonite and the sodium hydroxide solution is 1g:(0.05~0.08)mL; the volume ratio of γ mercaptopropyl trimethoxysilane and ethanol is 1:(0.3~0.5), and the mass-volume ratio of the wollastonite and the γ mercaptopropyl trimethoxysilane ethanol solution is 1:(0.4~0.8); the heating and stirring temperature is 40~50℃, the activation time is 20~40 min; the temperature is raised to 60~80℃, and the modification reaction time is 1.5~3h.

6. A method of producing the glass fiber-reinforced ACS composite material according to any one of claims 1 to 5, characterized by, The following steps are included: Step one, according to the formula proportion of the composite material, the raw materials are weighed, and the components except the glass fiber are stirred and mixed to obtain a premix; Step two, the premix obtained in step one is melt extruded through a double screw extruder, and the chopped yarn is added from the middle section of the screw through a side feeder, and after water cooling, granulation, and uniform mixing, the glass fiber reinforced ACS composite material is obtained.

7. The method of making a glass fiber-reinforced ACS composite of claim 6, wherein, The mixing time in the step one is 1-5 min; the process parameters of melt extrusion in the step two are as follows: ① zone: 175-180 ℃; ② zone: 200-210 ℃; ③ zone: 200-210 ℃; ④ zone: 200-210 ℃; ⑤ zone: 195-200 ℃; ⑥ zone: 190-195 ℃; ⑦ zone: 190-195 ℃; ⑧ zone: 200-205 ℃; ⑨ zone: die head temperature: 200-210 ℃; and the screw rotation speed is controlled at 250-350 r / min.

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