Master batch for cold-resistant toughened tray and preparation method of master batch

Abstract

The master batch is prepared from the following raw materials in parts by weight: 70-80 parts of polypropylene, 5-8 parts of glass fibers, 20-26 parts of a flexibilizer, 2-3 parts of an antioxidant, 3-5 parts of a lubricant, 2-3 parts of a light stabilizer and 1-2 parts of a processing aid. According to the master batch for the cold-resistant toughened tray, disclosed by the invention, a modified polypropylene material with excellent comprehensive performance is prepared by carefully selecting the raw materials, and the master batch not only has relatively high toughness and low temperature resistance, but also has good scratch resistance and mechanical property, and can be well applied to tray materials.

Description

Technical Field

[0001] The invention relates to the technical field of polymer materials, and in particular to a masterbatch for cold-resistant toughened pallets and a preparation method thereof. Background Art

[0002] With the development of modern science and technology, people have higher and higher requirements for material performance, especially for general plastic polypropylene materials. Polypropylene is mainly used in automobiles, home appliances, pipes, medical treatment, food and other fields. Since polypropylene materials have poor low-temperature toughness, if they are used in low-temperature environments, they need to be toughened and modified to improve the low-temperature toughness of polypropylene materials. Common materials for improving the low-temperature toughness of polypropylene are ethylene propylene diene monomer rubber (EPDM), vinyl elastomer (POE), styrene-butadiene-styrene elastomer (SBS), and hydrogenated styrene-butadiene-styrene elastomer (SEBS). The amount used is generally 10wt% to 40wt% of the mass of polypropylene. For example: Chinese patent CN1221607C uses SEBS to toughen polypropylene; Chinese patents CN102311584B, CN102675745A, and CN102516663A all use POE to toughen polypropylene; Chinese patent CN1119374C uses EPDM and SBS to toughen polypropylene.

[0003] Based on the above situation, the present invention proposes a masterbatch for cold-resistant and toughened pallets and a preparation method thereof, which can effectively solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a cold-resistant and toughened pallet masterbatch and a preparation method thereof. The cold-resistant and toughened pallet masterbatch of the present invention is composed of selected raw materials to produce a modified polypropylene material with excellent comprehensive performance, which not only has high toughness and low temperature resistance, but also has good scratch resistance and mechanical properties, and can be well applied to pallet materials.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is:

[0006] A cold-resistant and toughened pallet masterbatch is made of the following raw materials in parts by weight:

[0007] Polypropylene 70-80 parts,

[0008] Glass fiber 5-8 parts,

[0009] Toughener 20-26 parts,

[0010] 2-3 parts of antioxidant,

[0011] 3-5 parts of lubricant,

[0012] Light stabilizer 2-3 parts,

[0013] 1 to 2 parts of processing aid.

[0014] The cold-resistant toughened pallet masterbatch of the present invention is composed of carefully selected raw materials to produce a modified polypropylene material with excellent comprehensive performance. It not only has high toughness and low-temperature resistance, but also has good scratch resistance and mechanical properties, and can be well applied to pallet materials.

[0015] Preferably, the cold-resistant toughened pallet masterbatch is made of the following raw materials in parts by weight:

[0016] Polypropylene 75 parts,

[0017] 6.5 parts of glass fiber,

[0018] 23 parts toughening agent,

[0019] 2.5 parts of antioxidant,

[0020] 4 parts of lubricant,

[0021] 2.5 parts of light stabilizer,

[0022] 1.5 parts of processing aid.

[0023] Preferably, the melt index (MI) of the polypropylene is 40 to 50 g / 10 min.

[0024] Preferably, the toughening agent is propylene-octene copolymer.

[0025] Preferably, the antioxidant is the antioxidant DSTDP.

[0026] Preferably, the lubricant is ethylene bisstearamide.

[0027] Preferably, the light stabilizer is 2-(2-hydroxy-5-tert-hydroxyphenyl)benzotriazole.

[0028] Preferably, the processing aid is calcium stearate.

[0029] The present invention also provides a method for preparing the cold-resistant toughened pallet masterbatch, comprising the following steps:

[0030] A. Weigh the raw materials of the cold-resistant and toughened pallet masterbatch respectively;

[0031] B. Evenly mix the weighed raw materials of the masterbatch for cold-resistant and toughened pallets, and melt-extrude and granulate them in a twin-screw extruder to obtain the masterbatch for cold-resistant and toughened pallets.

[0032] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0033] The cold-resistant toughened pallet masterbatch of the present invention is composed of carefully selected raw materials to produce a modified polypropylene material with excellent comprehensive performance. It not only has high toughness and low-temperature resistance, but also has good scratch resistance and mechanical properties, and can be well applied to pallet materials.

[0034] The preparation method of the invention has simple process, convenient operation and saves manpower and equipment costs. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the preferred implementation scheme of the present invention is described below in conjunction with specific examples, but it should not be understood as a limitation of this patent.

[0036] Embodiment 1:

[0037] A cold-resistant and toughened pallet masterbatch is made of the following raw materials in parts by weight:

[0038] Polypropylene 70-80 parts,

[0039] Glass fiber 5-8 parts,

[0040] Toughener 20-26 parts,

[0041] 2-3 parts of antioxidant,

[0042] 3-5 parts of lubricant,

[0043] Light stabilizer 2-3 parts,

[0044] 1 to 2 parts of processing aid.

[0045] Preferably, the cold-resistant toughened pallet masterbatch is made of the following raw materials in parts by weight:

[0046] Polypropylene 75 parts,

[0047] 6.5 parts of glass fiber,

[0048] 23 parts toughening agent,

[0049] 2.5 parts of antioxidant,

[0050] 4 parts of lubricant,

[0051] 2.5 parts of light stabilizer,

[0052] 1.5 parts of processing aid.

[0053] Preferably, the melt index (MI) of the polypropylene is 40 to 50 g / 10 min.

[0054] Preferably, the toughening agent is propylene-octene copolymer.

[0055] Preferably, the antioxidant is the antioxidant DSTDP.

[0056] Preferably, the lubricant is ethylene bisstearamide.

[0057] Preferably, the light stabilizer is 2-(2-hydroxy-5-tert-hydroxyphenyl)benzotriazole.

[0058] Preferably, the processing aid is calcium stearate.

[0059] The present invention also provides a method for preparing the cold-resistant toughened pallet masterbatch, comprising the following steps:

[0060] A. Weigh the raw materials of the cold-resistant and toughened pallet masterbatch respectively;

[0061] B. Evenly mix the weighed raw materials of the masterbatch for cold-resistant and toughened pallets, and melt-extrude and granulate them in a twin-screw extruder to obtain the masterbatch for cold-resistant and toughened pallets.

[0062] Embodiment 2:

[0063] A cold-resistant and toughened pallet masterbatch is made of the following raw materials in parts by weight:

[0064] Polypropylene 70 parts,

[0065] 5 parts of glass fiber,

[0066] 20 parts toughening agent,

[0067] 2 parts of antioxidant,

[0068] 3 parts of lubricant,

[0069] 2 parts of light stabilizer,

[0070] 1 part of processing aid.

[0071] Preferably, the melt index (MI) of the polypropylene is 40 to 50 g / 10 min.

[0072] Preferably, the toughening agent is propylene-octene copolymer.

[0073] Preferably, the antioxidant is the antioxidant DSTDP.

[0074] Preferably, the lubricant is ethylene bisstearamide.

[0075] Preferably, the light stabilizer is 2-(2-hydroxy-5-tert-hydroxyphenyl)benzotriazole.

[0076] Preferably, the processing aid is calcium stearate.

[0077] The present invention also provides a method for preparing the cold-resistant toughened pallet masterbatch, comprising the following steps:

[0078] A. Weigh the raw materials of the cold-resistant and toughened pallet masterbatch respectively;

[0079] B. Evenly mix the weighed raw materials of the masterbatch for cold-resistant and toughened pallets, and melt-extrude and granulate them in a twin-screw extruder to obtain the masterbatch for cold-resistant and toughened pallets.

[0080] Embodiment 3:

[0081] A cold-resistant and toughened pallet masterbatch is made of the following raw materials in parts by weight:

[0082] Polypropylene 80 parts,

[0083] 8 parts of glass fiber,

[0084] 26 parts of toughening agent,

[0085] 3 parts of antioxidant,

[0086] 5 parts of lubricant,

[0087] 3 parts of light stabilizer,

[0088] 2 parts of processing aid.

[0089] Preferably, the melt index (MI) of the polypropylene is 40 to 50 g / 10 min.

[0090] Preferably, the toughening agent is propylene-octene copolymer.

[0091] Preferably, the antioxidant is the antioxidant DSTDP.

[0092] Preferably, the lubricant is ethylene bisstearamide.

[0093] Preferably, the light stabilizer is 2-(2-hydroxy-5-tert-hydroxyphenyl)benzotriazole.

[0094] Preferably, the processing aid is calcium stearate.

[0095] The present invention also provides a method for preparing the cold-resistant toughened pallet masterbatch, comprising the following steps:

[0096] A. Weigh the raw materials of the cold-resistant and toughened pallet masterbatch respectively;

[0097] B. Evenly mix the weighed raw materials of the masterbatch for cold-resistant and toughened pallets, and melt-extrude and granulate them in a twin-screw extruder to obtain the masterbatch for cold-resistant and toughened pallets.

[0098] Embodiment 4:

[0099] A cold-resistant and toughened pallet masterbatch is made of the following raw materials in parts by weight:

[0100] Polypropylene 75 parts,

[0101] 6.5 parts of glass fiber,

[0102] 23 parts toughening agent,

[0103] 2.5 parts of antioxidant,

[0104] 4 parts of lubricant,

[0105] 2.5 parts of light stabilizer,

[0106] 1.5 parts of processing aid.

[0107] Preferably, the melt index (MI) of the polypropylene is 40 to 50 g / 10 min.

[0108] Preferably, the toughening agent is propylene-octene copolymer.

[0109] Preferably, the antioxidant is the antioxidant DSTDP.

[0110] Preferably, the lubricant is ethylene bisstearamide.

[0111] Preferably, the light stabilizer is 2-(2-hydroxy-5-tert-hydroxyphenyl)benzotriazole.

[0112] Preferably, the processing aid is calcium stearate.

[0113] The present invention also provides a method for preparing the cold-resistant toughened pallet masterbatch, comprising the following steps:

[0114] A. Weigh the raw materials of the cold-resistant and toughened pallet masterbatch respectively;

[0115] B. Evenly mix the weighed raw materials of the masterbatch for cold-resistant and toughened pallets, and melt-extrude and granulate them in a twin-screw extruder to obtain the masterbatch for cold-resistant and toughened pallets.

[0116] The cold-resistant toughened pallet masterbatch of the present invention is composed of carefully selected raw materials to produce a modified polypropylene material with excellent comprehensive performance. It not only has high toughness and low-temperature resistance, but also has good scratch resistance and mechanical properties, and can be well applied to pallet materials.

[0117] The above are only preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be regarded as limiting the present invention. The protection scope of the present invention should be based on the scope defined by the claims. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the spirit and scope of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. 。

Claims

1. A cold-resistant and toughened pallet masterbatch, characterized in that: Made from the following raw materials in parts by weight: Polypropylene 70-80 parts, Glass fiber 5-8 parts, 20-26 parts of toughening agent, 2-3 parts of antioxidant, 3-5 parts of lubricant, Light stabilizer 2-3 parts, 1 to 2 parts of processing aid.

2. The cold-resistant and toughened pallet masterbatch according to claim 1, characterized in that: The cold-resistant toughened pallet masterbatch is made of the following raw materials in parts by weight: Polypropylene 75 parts, 6.5 parts of glass fiber, 23 parts toughening agent, 2.5 parts of antioxidant, 4 parts of lubricant, 2.5 parts of light stabilizer, 1.5 parts of processing aid.

3. The cold-resistant and toughened pallet masterbatch according to claim 1, characterized in that: The melt index (MI) of the polypropylene is 40 to 50 g / 10 min.

4. The cold-resistant and toughened pallet masterbatch according to claim 1, characterized in that: The toughening agent is propylene-octene copolymer.

5. The cold-resistant and toughened pallet masterbatch according to claim 1, characterized in that: The antioxidant is the antioxidant DSTDP.

6. The cold-resistant and toughened pallet masterbatch according to claim 1, characterized in that: The lubricant is ethylene bisstearamide.

7. The cold-resistant and toughened pallet masterbatch according to claim 1, characterized in that: The light stabilizer is 2-(2-hydroxy-5-tert-hydroxyphenyl)benzotriazole.

8. The cold-resistant and toughened pallet masterbatch according to claim 1, characterized in that: The processing aid is calcium stearate.

9. A method for preparing a cold-resistant and toughened pallet masterbatch according to any one of claims 1 to 8, characterized in that: The following steps are involved: A. Weigh the raw materials of the cold-resistant and toughened pallet masterbatch respectively; B. Evenly mix the weighed raw materials of the masterbatch for cold-resistant and toughened pallets, and melt-extrude and granulate them in a twin-screw extruder to obtain the masterbatch for cold-resistant and toughened pallets.