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Nucleating agent and preparing method and application thereof

A technology of nucleating agent and acetal, which is applied in the fields of nucleating agent and its preparation and application, can solve the problems of unfavorable comprehensive performance and reduce the nucleation efficiency of polyolefin products, and achieve improvement of flexural modulus, transparency and fog reduction degree of effect

Inactive Publication Date: 2019-10-11
赣州蓝风科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the patent literature believes that most typical nucleating compounds (such as sodium benzoate, disodium bicyclo[2.2.1]heptanedicarboxylate) will reduce the nucleation efficiency of polyolefin products, which is not conducive to the improvement of their comprehensive properties

Method used

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  • Nucleating agent and preparing method and application thereof
  • Nucleating agent and preparing method and application thereof
  • Nucleating agent and preparing method and application thereof

Examples

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preparation example Construction

[0036] The preparation method of the nucleating agent of the present invention comprises the steps of: dispersing bicyclic carboxylate A, benzoate B and dibenzylidene alditol acetal C in water, fully mixing, then drying and pulverizing to obtain the nucleating agent agent. The amount of water used is not particularly limited. Drying and pulverizing conditions are conventional conditions, which will not be repeated here.

[0037] In addition, the present invention also provides the use of the above-mentioned nucleating agent in improving the flexural modulus and transparency of thermoplastic resins. Thermoplastic resin means a polymeric material that melts when heated but remains solid when cooled; including but not limited to polyolefins, polyamides, polyurethanes or polyesters. The thermoplastic resin is preferably polyolefin, so that the effect of the nucleating agent can be maximized. Therefore, the present invention also provides the use of the above-mentioned nucleatin...

Embodiment 1

[0039] Disperse bicyclo[2.2.1]heptane-2,3-dicarboxylate disodium salt, sodium benzoate and 1,3:2,4-bis(p-methylbenzylidene)sorbitol in water and mix well , then dried and pulverized to obtain the nucleating agent. See Table 1 for specific ratios.

[0040] Table 1

[0041]

experiment example

[0047] The nucleating agents of Example 1 and Comparative Examples 1 to 3 were added to the polypropylene resin. Based on the weight of polypropylene, the dosage of nucleating agent is 0.56‰, the dosage of antioxidant 1010 is 0.5‰, the dosage of antioxidant 168 is 0.5‰, and the dosage of calcium stearate is 0.5‰.

[0048] The specific process conditions are:

[0049] The temperature of each part of the extruder: 1st stage, 190°C; 2nd stage, 199°C; 3rd stage, 212°C; 4th stage, 222°C; 5th stage, 221°C; 6th stage, 222°C.

[0050] Melt temperature: 235°C;

[0051] Screw speed: 30Hz;

[0052] Feeding speed: 40rpm

[0053] Head pressure: 1.1-1.2MPa.

[0054] The mixture was melted and granulated, and the properties of the modified polypropylene resin were measured, see Table 3 for details. Wherein, the flexural modulus is measured by GB / T 9341-2008 or ISO178:2001. Haze is measured by GB / T 2410-2008.

[0055] table 3

[0056] serial number Flexural modulus / MPa H...

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Abstract

The invention discloses a nucleating agent and a preparing method and application thereof. The nucleating agent comprises bicyclo-carboxylate A, benzoate B and dibenzylidene glycolic acetal C. The nucleating agent can integrate the bending modulus and transparency of thermoplastic resin.

Description

technical field [0001] The invention relates to a nucleating agent for thermoplastic resin, its preparation method and application. Background technique [0002] Thermoplastic refers to a polymeric material that melts when heated and remains solid when cooled. Thermoplastic resins can be used in storage containers, medical devices, food packaging, plastic tubing, and shelving components. Thermoplastic resins include polymers exhibiting crystalline or semi-crystalline morphology, and specific examples include, but are not limited to, polyolefins, polyamides, polyurethanes, polyesters, and the like. The processing of thermoplastic resins is very important to their properties. Typically, thermoplastic resins containing nucleating agents have a faster rate of crystallization. Compounds that provide fast crystallization rates and / or high polymer crystallization temperatures are generally referred to as nucleating agents. There are nucleating agents that increase the durabilit...

Claims

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Application Information

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IPC IPC(8): C08K5/00C08K5/098C08K5/1575C08L23/12
CPCC08K5/0083C08K5/098C08K5/1575C08K2201/014C08L2205/24C08L23/12
Inventor 陈才金
Owner 赣州蓝风科技有限公司
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