Antiscratch resin and preparation method thereof

Abstract

The invention relates to an antiscratch resin. The antiscratch resin comprises the following components in part by weight: 50 to 90 parts of polymethyl methacrylate (PMMA) resin, 10 to 50 parts of toughening agent, 0.2 to 0.6 part of light stabilizer, 0.2 to 1 part of antioxidant, 0.2 to 2 parts of lubricating agent, 0 to 3 parts of pearl pigment, 0 to 3 parts of metal pigment and 0 to 3 parts of toner. The antiscratch resin is prepared by the following steps of: stirring and mixing all the components in a high-speed mixing machine; conveying the mixture to a double-screw extruder; melting and compounding the materials under conveying, cutting and mixing action of screws; and extruding, bracing, cooling and dicing to obtain the antiscratch resin. The antiscratch resin has high impact strength, high antiscratch property, high heat resistance, various appearance effects and a wide application range, and can avoid spraying completely.

Description

technical field

[0001] The invention relates to the technical field of polymer materials, in particular to a scratch-resistant resin with excellent appearance properties and a preparation method thereof. Background technique

[0002] Methyl methacrylate resin (PMMA), not only has high light transmittance (92%), high surface gloss, good resistance to ultraviolet rays and outdoor aging, excellent electrical properties, strong tinting power, can be used as a high surface of bright colors View spray-free aesthetic resin. Therefore, it is widely used in optical products, automobile exterior decoration, home appliance casing, building materials, decorations, medical equipment and other fields.

[0003] However, PMMA has poor toughness and is sensitive to gaps, so that undesirable phenomena such as edge jumping, brittle fracture, and cracking are prone to occur during production and assembly, resulting in an increase in the production defect rate. Therefore, in view of the defect...

Examples

Embodiment 1

[0026] Stir 85kg of PMMA resin, 15kg of toughening agent, 0.2kg of light stabilizer, 0.4kg of antioxidant, and 0.6kg of lubricant through a high-speed mixer and mix them uniformly. The temperature of the screw extruder is 180~230°C. Under the shearing, conveying, and mixing of the twin-screw, it is fully melted and compounded, and then extruded through the machine head, drawn, cooled, pelletized, and dried to obtain scratch resistance. resin. Among them, the PMMA resin is Arkema V040; the toughening agent has a core-shell structure, the shell is PMMA, the core rubber is butyl acrylate grafted butadiene, the particle size is 300nm, and the rubber content is 60wt% of the total weight of the toughening agent ; Light stabilizer: Ciba 770; lubricant is EBS; antioxidant is B900.

Embodiment 2

[0028] Stir 75kg of PMMA resin, 25kg of toughening agent, 0.3kg of light stabilizer, 0.5kg of antioxidant, 0.5kg of lubricant, and 2kg of toner through a high-speed mixer, and mix evenly. Then, the above-mentioned mixture is accurately metered into the extruder Inside, the temperature of the twin-screw extruder is controlled at 180~230°C. Under the shearing, conveying, and mixing of the twin-screw, it is fully melted and compounded, and then extruded through the head, drawn, cooled, pelletized, and dried. A scratch-resistant resin is obtained. Among them, the PMMA resin is Arkema V040; the toughening agent has a core-shell structure, the shell is PMMA, the core rubber is butyl acrylate grafted siloxane, the particle size is 200nm, and the rubber content is 70wt% of the total weight of the toughening agent ;Light stabilizer: Ciba 770; lubricant is EBS; antioxidant is B900; toner is carbon black masterbatch.

Embodiment 3

[0030] Stir 75kg PMMA resin, 25kg toughening agent, 0.2kg light stabilizer, 0.6kg antioxidant, 0.8kg lubricant through a high-speed mixer, and mix evenly. The temperature of the screw extruder is 180~230°C. Under the shearing, conveying, and mixing of the twin-screw, it is fully melted and compounded, and then extruded through the machine head, drawn, cooled, pelletized, and dried to obtain scratch resistance. resin. Among them, the PMMA resin is Degussa 7N; the toughening agent has a core-shell structure, the shell is PMMA, the core rubber is ethyl methacrylate grafted styrene, the particle size is 200nm, and the rubber content is 80wt of the total weight of the toughening agent %; light stabilizer: Ciba 770; lubricant is EBS; antioxidant is B900.

technical field

[0001] The invention relates to the technical field of polymer materials, in particular to a scratch-resistant resin with excellent appearance properties and a preparation method thereof. Background technique

[0002] Methyl methacrylate resin (PMMA), not only has high light transmittance (92%), high surface gloss, good resistance to ultraviolet rays and outdoor aging, excellent electrical properties, strong tinting power, can be used as a high surface of bright colors View spray-free aesthetic resin. Therefore, it is widely used in optical products, automobile exterior decoration, home appliance casing, building materials, decorations, medical equipment and other fields.

[0003] However, PMMA has poor toughness and is sensitive to gaps, so that undesirable phenomena such as edge jumping, brittle fracture, and cracking are prone to occur during production and assembly, resulting in an increase in the production defect rate. Therefore, in view of the defect...

Examples

Embodiment 1

[0026] Stir 85kg of PMMA resin, 15kg of toughening agent, 0.2kg of light stabilizer, 0.4kg of antioxidant, and 0.6kg of lubricant through a high-speed mixer and mix them uniformly. The temperature of the screw extruder is 180~230°C. Under the shearing, conveying, and mixing of the twin-screw, it is fully melted and compounded, and then extruded through the machine head, drawn, cooled, pelletized, and dried to obtain scratch resistance. resin. Among them, the PMMA resin is Arkema V040; the toughening agent has a core-shell structure, the shell is PMMA, the core rubber is butyl acrylate grafted butadiene, the particle size is 300nm, and the rubber content is 60wt% of the total weight of the toughening agent ; Light stabilizer: Ciba 770; lubricant is EBS; antioxidant is B900.

Embodiment 2

[0028] Stir 75kg of PMMA resin, 25kg of toughening agent, 0.3kg of light stabilizer, 0.5kg of antioxidant, 0.5kg of lubricant, and 2kg of toner through a high-speed mixer, and mix evenly. Then, the above-mentioned mixture is accurately metered into the extruder Inside, the temperature of the twin-screw extruder is controlled at 180~230°C. Under the shearing, conveying, and mixing of the twin-screw, it is fully melted and compounded, and then extruded through the head, drawn, cooled, pelletized, and dried. A scratch-resistant resin is obtained. Among them, the PMMA resin is Arkema V040; the toughening agent has a core-shell structure, the shell is PMMA, the core rubber is butyl acrylate grafted siloxane, the particle size is 200nm, and the rubber content is 70wt% of the total weight of the toughening agent ;Light stabilizer: Ciba 770; lubricant is EBS; antioxidant is B900; toner is carbon black masterbatch.

Embodiment 3

[0030] Stir 75kg PMMA resin, 25kg toughening agent, 0.2kg light stabilizer, 0.6kg antioxidant, 0.8kg lubricant through a high-speed mixer, and mix evenly. The temperature of the screw extruder is 180~230°C. Under the shearing, conveying, and mixing of the twin-screw, it is fully melted and compounded, and then extruded through the machine head, drawn, cooled, pelletized, and dried to obtain scratch resistance. resin. Among them, the PMMA resin is Degussa 7N; the toughening agent has a core-shell structure, the shell is PMMA, the core rubber is ethyl methacrylate grafted styrene, the particle size is 200nm, and the rubber content is 80wt of the total weight of the toughening agent %; light stabilizer: Ciba 770; lubricant is EBS; antioxidant is B900.

Images