A modified glass fiber and its application, reinforced styrene-maleic anhydride copolymer composition and its preparation method

A technology of styrene maleic acid and glass fiber, which is applied to the reinforced styrene maleic anhydride copolymer composition and its preparation, modified glass fiber and application fields, and can solve the problem of poor processing releasability, poor appearance, physical Mechanical properties, such as low impact strength, can improve the surface floating fiber problem, improve the processing mold release, and improve the physical and mechanical properties.

Active Publication Date: 2022-04-15
东莞市建泓新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Glass fiber reinforced styrene maleic anhydride copolymer (SMA) is mainly used in parts in the automotive field, such as car dashboard frames, sunroof frames, etc., but its physical and mechanical properties, especially low impact strength, lead to brittleness, which affects its application
And in the injection molding process, because it is often a large-volume part, the mold release property of glass fiber reinforced styrene maleic anhydride copolymer is not good.
In addition, due to the large difference in polarity between glass fiber and SMA, after the two are blended, the glass fiber is easily exposed on the surface of the SMA matrix to form "floating fibers", resulting in poor appearance

Method used

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  • A modified glass fiber and its application, reinforced styrene-maleic anhydride copolymer composition and its preparation method
  • A modified glass fiber and its application, reinforced styrene-maleic anhydride copolymer composition and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 and comparative example 5-6

[0065] Raw material preparation:

[0066] Preparation of modified glass fibers:

[0067] Add 10 parts by weight of glass fiber A to 90 parts by weight of distilled water containing 3wt% emulsifier, stir and emulsify, keep the temperature at 70-80°C, and then evenly add 30 parts by weight of 10wt% lanthanum chloride aqueous solution and 20 The rare earth compound aqueous solution composed of 10 wt% cerium chloride aqueous solution, the dropping rate of the rare earth compound aqueous solution is 5 parts by weight / 10min, after the dropwise addition, stir at 70-80°C for 30min, and then pass into ammonia water Keep stirring, centrifuge after 2 hours, wash with distilled water for 3 times, and dry at 80°C for 8 hours after dehydration to obtain modified glass fiber.

[0068] Preparation of styrene maleic anhydride copolymer:

[0069] Take by weighing styrene and maleic anhydride, wherein the weight ratio of styrene and maleic anhydride is 75:25, dissolve maleic anhydride in styre...

Embodiment 2

[0078] Raw material preparation:

[0079] Preparation of modified glass fibers:

[0080] Add 10 parts by weight of glass fiber A to 80 parts by weight of distilled water containing 5wt% emulsifier, stir and emulsify, keep the temperature at 70-80°C, and then evenly add 30 parts by weight of 10wt% lanthanum chloride aqueous solution and 20 The rare earth compound aqueous solution composed of 10 wt% cerium chloride aqueous solution, the dropping rate of the rare earth compound aqueous solution is 5 parts by weight / 10min, after the dropwise addition, stir at 70-80°C for 30min, and then pass into ammonia water Keep stirring, centrifuge after 2 hours, wash with distilled water for 3 times, and dry at 80°C for 8 hours after dehydration to obtain modified glass fiber.

[0081] Preparation of styrene maleic anhydride copolymer:

[0082] Weigh styrene and maleic anhydride, wherein the weight ratio of styrene and maleic anhydride is 75:20, dissolve maleic anhydride in styrene, and add...

Embodiment 3

[0091] Raw material preparation:

[0092] Preparation of modified glass fiber:

[0093] Add 10 parts by weight of glass fiber A to 95 parts by weight of distilled water containing 2wt% emulsifier, stir and emulsify, keep the temperature at 70-80°C, and then evenly add 30 parts by weight of 10wt% lanthanum chloride aqueous solution and 20 The rare earth compound aqueous solution composed of 10 wt% cerium chloride aqueous solution, the dropping rate of the rare earth compound aqueous solution is 5 parts by weight / 10min, after the dropwise addition, stir at 70-80°C for 30min, and then pass into ammonia water Keep stirring, centrifuge after 2 hours, wash with distilled water for 3 times, and dry at 80°C for 8 hours after dehydration to obtain modified glass fiber.

[0094] Preparation of styrene maleic anhydride copolymer:

[0095] Weigh styrene and maleic anhydride, wherein the weight ratio of styrene and maleic anhydride is 75:30, dissolve maleic anhydride in styrene, and add ...

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Abstract

The invention discloses a modified glass fiber and its application, a reinforced styrene-maleic anhydride copolymer composition and a preparation method thereof. The modified glass fiber in the invention is obtained through surface modification with a rare earth compound, and can be used In the reinforcement modification of styrene maleic anhydride copolymer, the physical and mechanical properties and surface floating fiber problem of styrene maleic anhydride copolymer can be obviously improved, and the processing release property of the material can be improved at the same time. The reinforced styrene-maleic anhydride copolymer composition includes the following components: styrene-maleic anhydride copolymer, the above-mentioned modified glass fiber, silicone masterbatch and other additives. The modified glass fiber modified by rare earth compounds and the silicone masterbatch made of silicone powder, lanthanum chloride and styrene maleic anhydride copolymer can significantly improve the performance of styrene maleic anhydride copolymer. Physical and mechanical properties and surface floating fiber problems, and can significantly improve the mold release performance, can be widely used in the field of auto parts materials.

Description

technical field [0001] The invention belongs to the field of high molecular polymers, in particular to a modified glass fiber and its application, a reinforced styrene maleic anhydride copolymer composition and a preparation method thereof. Background technique [0002] Styrene maleic anhydride copolymer is obtained by free radical polymerization of styrene and maleic anhydride. It is widely used in industry as the most economical product for important automotive interior structural parts applications. [0003] Glass fiber reinforced styrene-maleic anhydride copolymer (SMA) is mainly used in automotive parts, such as automobile dashboard frame, sunroof frame, etc., but its physical and mechanical properties, especially low impact strength, make it brittle, which affects its application . And in the injection molding process, because it is often a large-volume part, the processing release property of the glass fiber reinforced styrene-maleic anhydride copolymer is not good....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/02C08K7/14C08L35/06C08L83/04C08K13/06C08K3/16C08J5/08C08F212/08C08F222/08C08F222/40
CPCC08K9/02C08K7/14C08J5/08C08F212/08C08J2335/06C08J2483/04C08K13/06C08K3/16C08F222/08C08F222/40
Inventor 黄伟李德锋
Owner 东莞市建泓新材料科技有限公司
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