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Process for preparing thermoplastic phenolic aldehyde resin/polypropylene coblend

A technology of phenolic resin and polypropylene, which is applied in the field of preparation of polymer blends, can solve the problems of low rigidity and modulus, and achieve the effects of good comprehensive performance, convenient operation and strong applicability

Active Publication Date: 2007-06-06
上海长宁橡胶制品厂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polypropylene is currently the most widely used polyolefin resin. It has good mechanical properties, but its rigidity and modulus are not high, so it is difficult to meet the requirements of engineering materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-7

[0016] According to the formula in Table-1, at a temperature of 190°C, polypropylene (PP, brand: F401, melt index 2.3g / 10min, produced by Liaoning Panjin Petrochemical Co., Ltd.), maleic anhydride grafted poly Propylene (MAH-g-PP, grafting rate 1%, Shanghai Rizhisheng Plastic Co., Ltd.), thermoplastic phenolic resin (polycondensation of phenol and formaldehyde to form thermoplastic linear resin, brand: PF-1, Shanghai Qinan Adhesive Materials plant), hexamethylenetetramine (HMTA), and the blending time was 10 minutes. The obtained blend was molded into a tablet with a flat vulcanizing machine. The splines are cut according to the standard size, and the samples are tested according to ASTM D638, ASTM D790, ASTM D256 standards for tensile, bending, impact and other performance indicators. The test results are shown in Table-1

Embodiment 10-16

[0021] According to the formula in Table-2, at a temperature of 190°C, add polypropylene (PP, brand: F401, melt index 2.3g / 10min, produced by Liaoning Panjin Petrochemical Co., Ltd.), maleic anhydride grafted Polypropylene (MAH-g-PP, grafting rate 1%, Shanghai Rizhisheng Plastic Co., Ltd.), thermoplastic phenolic resin (thermoplastic phenolic resin modified by cashew nut oil, brand: 2183, Shanghai Qinan Adhesive Material Factory), Hexamethylenetetramine (HMTA) with a blending time of 10 minutes. Sample preparation and testing standards were operated according to Examples 1-7. The test results are shown in Table-2.

[0022] Example / Project

[0023] The examples in Table-2 are also compared with Comparative Examples 1 and 2 in Table-1, and it can be seen that the mechanical properties of the two are similar.

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Abstract

The invention discloses a manufacture method for thermal plasticity phenol-formaldehyde resin / polypropylene co-mixture. The process includes the following steps: adding polypropylene, polypropylene grafted by maleic anhydride, thermal plasticity phenol-formaldehyde resin, solidifying agent into Banbury mixer to take milling, plasticity phenol-formaldehyde resin would be dispersed into um level particle and equally distribute in polypropylene to improve the rigidity and modules of the polypropylene. The invention is easy to make, and has good processing behavior.

Description

technical field [0001] The invention relates to a preparation method of a polymer blend, in particular to a preparation method of applying a dynamic curing method to a thermoplastic phenolic resin / polypropylene blend. Background technique [0002] In 1962, A.M.Gessler of the United States first proposed to prepare rubber-plastic blended thermoplastic elastomers (US Patent 3,037,954) by dynamic vulcanization method. After the systematic research of K.Fisher of Uniroyal Company of the United States, the company developed dynamic partial vulcanization in 1972. EPDM / polypropylene (PP) thermoplastic elastomer (US Patent 3,758,643). In the early 1980s, A.Y.Coran proposed dynamic full vulcanization technology on the basis of summarizing the predecessors. It was developed and researched by Monsanto Company of the United States, and the dynamic full vulcanized EPDM / PP thermoplastic elastomer was obtained. It was officially named in 1982 as Santoprene has been industrialized. The dy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/10C08L61/14C08J3/00C08L23/12C08L51/06C08K5/16
Inventor 崔丽梅张勇张隐西
Owner 上海长宁橡胶制品厂有限公司
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