Preparation method of medical transparent polypropylene material

Abstract

The invention relates to the technical field of polypropylene, in particular to a preparation method of a medical transparent polypropylene material. The medical transparent polypropylene material is prepared from the following raw materials in parts by weight: 100 parts of homo-polypropylene resin, 0.2-0.4 part of a transparent nucleating agent, 2-6 parts of phthalate, 7-15 parts of a toughening agent, 6-28 parts of expansible graphite, 1-4 parts of a halogen-free flame retardant, 0.3-1.8 parts of a coupling agent, 0.3-2.4 parts of an antistatic agent, 65 parts of a curing agent, 10-30 parts of a coloring agent, 0.3-0.6 part of an antioxidant, 0.4-1.5 parts of lubricating grease, 3-5 parts of a stabilizer and 10-40 parts of low-dielectric-loss glass fiber. The medical transparent polypropylene material is excellent in oxidation resistance, has good antistatic property, is convenient to color, and is high in thermal stability, high in fluidity and high in transparency.

Description

technical field

[0001] The invention relates to the technical field of polypropylene, in particular to a method for preparing a medical transparent polypropylene material. Background technique

[0002] Polypropylene (PP) is one of the five general-purpose plastics. It has excellent mechanical properties, good heat resistance, good chemical stability, and excellent high-frequency insulation performance. However, polypropylene also has obvious disadvantages: poor transparency, fluidity Low temperature, poor toughness at low temperature, and easy to generate static electricity during processing. Poor transparency makes the product look foggy and affects the appearance; poor fluidity when the product is molded on a multi-cavity mold will cause the PP material to fail to fit the cavity Full, the product is defective; PP products have poor toughness and are prone to breakage in cold places; due to the lack of polar groups inside the molecule and poor hygroscopicity, PP materials h...

Examples

Embodiment 1

[0022] Example 1, a method for preparing a medical transparent polypropylene material, made of the following raw materials in parts by weight: 100 parts of homopolypropylene resin, 0.2-0.4 parts of transparent nucleating agent, 2-6 parts of phthalate parts, toughening agent: 7-15 parts, expandable graphite: 6-28 parts, halogen-free flame retardant 1-4 parts, coupling agent 0.3-1.8 parts, antistatic agent 0.3-2.4 parts, curing agent: 65 parts parts, colorant: 10-30 parts, antioxidant: 0.3-0.6 parts, grease: 0.4-1.5 parts, stabilizer: 3-5 parts, low dielectric loss glass fiber 10-40 parts.

[0023] Specifically, the toughening agent is polystyrene.

[0024] Specifically, the antistatic agent is an internally mixed antistatic agent.

[0025] Specifically, the curing agent is hexamethylene diamine adduct.

[0026] Specifically, the antioxidant used is butylated hydroxytoluene (BHT).

[0027] Specifically, the stabilizer is made of organotin material.

[0028] Specifically, the...

Embodiment 2

[0033] Embodiment 2, a kind of preparation method of medical transparent polypropylene material, concrete steps are as follows:

[0034] S1. Take 100 parts of homopolypropylene resin, 0.2 parts of transparent nucleating agent, 7 parts of toughening agent, 6 parts of expandable graphite, 1 part of halogen-free flame retardant, 0.3 parts of coupling agent, and antistatic agent 0.3 parts, curing agent: 65 parts, coloring agent: 10 parts, antioxidant: 0.3 parts, lubricating grease: 0.4 parts, stabilizer: 3 parts, 10 parts of low dielectric loss glass fiber, crushed, screened and filtered, and then put into the mixing Mix in machine.

[0035] S2. After stirring and mixing, the mixed material is fed into a parallel screw extruder to be completely melted under microwave radiation, and then extruded into shape. The microwave power is 750W.

[0036] S3. The conditions of the extrusion process are: 200 degrees in the first zone, 225 degrees in the second zone, and 240 degrees in the th...

technical field

[0001] The invention relates to the technical field of polypropylene, in particular to a method for preparing a medical transparent polypropylene material. Background technique

[0002] Polypropylene (PP) is one of the five general-purpose plastics. It has excellent mechanical properties, good heat resistance, good chemical stability, and excellent high-frequency insulation performance. However, polypropylene also has obvious disadvantages: poor transparency, fluidity Low temperature, poor toughness at low temperature, and easy to generate static electricity during processing. Poor transparency makes the product look foggy and affects the appearance; poor fluidity when the product is molded on a multi-cavity mold will cause the PP material to fail to fit the cavity Full, the product is defective; PP products have poor toughness and are prone to breakage in cold places; due to the lack of polar groups inside the molecule and poor hygroscopicity, PP materials h...

Examples

Embodiment 1

[0022] Example 1, a method for preparing a medical transparent polypropylene material, made of the following raw materials in parts by weight: 100 parts of homopolypropylene resin, 0.2-0.4 parts of transparent nucleating agent, 2-6 parts of phthalate parts, toughening agent: 7-15 parts, expandable graphite: 6-28 parts, halogen-free flame retardant 1-4 parts, coupling agent 0.3-1.8 parts, antistatic agent 0.3-2.4 parts, curing agent: 65 parts parts, colorant: 10-30 parts, antioxidant: 0.3-0.6 parts, grease: 0.4-1.5 parts, stabilizer: 3-5 parts, low dielectric loss glass fiber 10-40 parts.

[0023] Specifically, the toughening agent is polystyrene.

[0024] Specifically, the antistatic agent is an internally mixed antistatic agent.

[0025] Specifically, the curing agent is hexamethylene diamine adduct.

[0026] Specifically, the antioxidant used is butylated hydroxytoluene (BHT).

[0027] Specifically, the stabilizer is made of organotin material.

[0028] Specifically, the...

Embodiment 2

[0033] Embodiment 2, a kind of preparation method of medical transparent polypropylene material, concrete steps are as follows:

[0034] S1. Take 100 parts of homopolypropylene resin, 0.2 parts of transparent nucleating agent, 7 parts of toughening agent, 6 parts of expandable graphite, 1 part of halogen-free flame retardant, 0.3 parts of coupling agent, and antistatic agent 0.3 parts, curing agent: 65 parts, coloring agent: 10 parts, antioxidant: 0.3 parts, lubricating grease: 0.4 parts, stabilizer: 3 parts, 10 parts of low dielectric loss glass fiber, crushed, screened and filtered, and then put into the mixing Mix in machine.

[0035] S2. After stirring and mixing, the mixed material is fed into a parallel screw extruder to be completely melted under microwave radiation, and then extruded into shape. The microwave power is 750W.

[0036] S3. The conditions of the extrusion process are: 200 degrees in the first zone, 225 degrees in the second zone, and 240 degrees in the th...