国产成人高清精品亚洲_日韩精品黄肉动漫在线观看_亚洲专区中文字幕在线观看_午夜精品寂寞久久久_色婷婷视频网站免费观看_成人免费毛片在线播放_无码日韩成人一区二区三区_国产顶级特黄大片_2023年b站黄页推厂404_99九九午夜高清无码免费视频

Puyang Willing

Current position: Home > Puyang Willing > Tackifying resin

Tackifying resin


Under normal circumstances, a higher amount of carbon black should be added to the rubber mixing mixture to increase the hardness, but at the same time, it will also encounter problems such as the increase of raw material Viscosity and processing difficulties, so phenolic resin is used to increase the hardness and stiffness. By processing linear phenolic resin, high hardness value can be obtained after curing, and the Viscosity of raw material can be kept in an acceptable range. Linear phenolic resins are usually blended by melting in rolls. Unlike other processing chemicals, it can be condensed by adding methyl donors in the vulcanization process. For example, hexamine.
Reinforced resins provide excellent hardness and stiffness for rubber compositions. Moreover, it has good compatibility with different kinds of rubber. And when the amount of addition is 8-15%, it can get a good enhancement effect, and the methylene donor is generally 7-15%, and the addition should be added at a lower temperature at the final vulcanization stage.

Model

Appearance

Soften point（℃）


Free phenol（%）

Application & Performance

WL-2300

Colorless or faint yellow granule

93-103

0-1.0

Pure phenolic resin, good compatibility with rubber, it plays the role of tackifying, plasticizing, softening rubber before vulcanization to improve the processing performance , it has a good reinforcing effect

WL-2301

Dark brown flake or granule

95-110

≤1.2

Cashew nut oil modified phenolic resin, good compatibility with rubber, plays a role in tackifying, plasticizing, softening rubber before vulcanization to improve processing performance

WL-2302

Dark brown flake or granule

95-105

2.5-3.5

Cashew oil modified phenolic resin, good compatibility with rubber, plays a role in increasing viscosity, plasticizing, softening rubber before vulcanization to improve processing performance

Model

Appearance

Flow length(mm)    125℃

Curing time    s/150℃

Hexamine (%)

Screen residue (%)

Performance/Applications

WL-2372

Brown to dark brown powder.

20-50

50-70

7.0－8.0

45um:(14±3); 63um:≤5

Cashew nut oil modified phenolic resin

WL-2374

20-30

50-90

6.5－7.5

Cashew nut oil modified phenolic resin

WL-2381

20-50

50-70

7.5－8.5

Cashew nut oil modified phenolic resin

WL-2367

White to faint yellow powder

22-35

60-90

6.9－7.8

Nonmodified linear phenolic resin



  Next： Vulcanization resin
  Prev： Reinforcement resin